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  • Artikel  (96)
  • taxonomy  (65)
  • hypertension
  • Springer  (96)
  • Annual Reviews
  • Blackwell Publishing Ltd
  • 2005-2009
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  • Springer  (96)
  • Annual Reviews
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  • 2005-2009
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  • 1
    Digitale Medien
    Digitale Medien
    Comparisons between the inorganic content of healthy and hypertensive rat tissues by inductively coupled plasma-mass spectrometry (1994)
    Springer
    BioMetals 7 (1994), S. 155-162 
    Details
    ISSN: 1572-8773
    Schlagwort(e): hypertension ; inductively coupled plasma-mass spectrometry ; inorganic content ; rat tissues
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract The inorganic contents of bone, brain, erythrocyte, heart, kidney cortex, kidney medulla, liver, lung, muscle and plasma from spontaneously hypertensive rats were compared with those of the same tissues from healthy Sprague-Dawley rats. A general inductively coupled plasma-mass spectrometry method developed for multi-element determinations of most of the elements present in biological tissues was used. Variations were found not only for major elements, as expected, but also for many trace elements in several tissues.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00140486
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  • 2
    Digitale Medien
    Digitale Medien
    Synonymy of the yeast generaWingea andDebaryomyces (1994)
    Springer
    Antonie van Leeuwenhoek 66 (1994), S. 337-342 
    Details
    ISSN: 1572-9699
    Schlagwort(e): Debaryomyces ; phylogeny ; ribosomal RNA ; taxonomy ; Wingea ; yeasts
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Extent of divergence in partial nucleotide sequences from large and small subunit ribosomal RNAs was used to estimate the evolutionary relationship between the generaWingea andDebaryomyces. These data showed the monotypic genusWingea to be congeneric withDebaryomyces, and it is proposed to transferW. robertsii toDebaryomyces.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00882770
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  • 3
    Digitale Medien
    Digitale Medien
    Statistical evaluation of circadian blood pressure rhythm during isradipine long-term therapy (1994)
    Springer
    European journal of clinical pharmacology 46 (1994), S. 119-122 
    Details
    ISSN: 1432-1041
    Schlagwort(e): Isradipine ; Fourier ; rhythm ; hypertension ; diurnal blood pressure rhythm
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Abstract In this study, using the two-step truncated Fourier series with four harmonics, we analysed the diurnal blood pressure profile in 13 mild-moderate essential hypertensive patients during isradipine long-term therapy. Circadian parameters such as the amplitudes and phases of the four harmonics and the overall amplitude and phase were obtained from the model. The total duration of the study was 26 weeks. Ambulatory blood pressure was measured at 15-min, intervals using a Takeda TM 2420 device after 2 weeks of placebo and after 6 and 26 weeks of isradipine (5 mg daily) respectively. After 6 and 26 weeks therapy the blood pressure values showed a significant decrease, although the daily blood pressure curves obtained from Fourier analysis showed that the circadian rhythm was not altered by isradipine treatment. Both the night/day differences and the overall amplitude/acrophases were statistically significant at 0,6 and 26 weeks. According the nocturnal blood pressure fall, we found that long-term therapy with isradipine increased the number of patients with nocturnal blood pressure fall and reducing the early morning blood pressure rise. In conclusion, the two-step method Fourier analysis represents a novel and useful statistical approach to evaluate the presence of a significant diurnal blood pressure rhythm and to provide the circadian parameters of the 24-h blood pressure profile during pharmacological therapy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00199873
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  • 4
    Digitale Medien
    Digitale Medien
    Relationship between the cardiovascular effects and steady-state kinetics of clonidine in hypertension (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 309-313 
    Details
    ISSN: 1432-1041
    Schlagwort(e): clonidine ; hypertension ; therapeutic window ; steady state concentration ; pharmacokinetics ; cardiovascular effects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Clonidine was given orally as monotherapy in increasing daily doses from 3.1 to 25.7 µg/kg to patients with essential hypertension (n=6). When a steady state concentration in plasma was reached at each dose level, the blood pressure (BP) and heart rate were measured during a dosage interval. Effect time — plasma concentration data were submitted to nonlinear regression analysis, which showed that the observed BP effects could be dissociated into depressor and pressor components. A window for the antihypertensive effect was established. At a plasma clonidine concentration of 0.65±0.07 ng/ml 50% of the maximal depressor effect was found, and it was only separated by a factor of 2 from the half maximal pure pressor concentration in plasma. No relationship between the change in heart rate and the plasma clonidine was observed. The findings strengthen the importance of close monitoring of clonidine therapy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00548760
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  • 5
    Digitale Medien
    Digitale Medien
    Effect of oxprenolol and metoprolol on serum lipid concentration (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 331-334 
    Details
    ISSN: 1432-1041
    Schlagwort(e): metoprolol ; oxprenolol ; hypertension ; beta-blockers ; HDL-cholesterol ; intrinsic sympathomimetic activity ; cardioselectivity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The aim of the present study was to evaluate whether a reduction in HDL-cholesterol is peculiar to non cardioselective beta blockers or whether it is also produced by cardioselective beta1-blockers. 16 patients with primary arterial hypertension on a balanced isocaloric diet were given oxprenolol 120 to 240 mg/day or metoprolol 100 to 200 mg/day in a random cross-over study. No significant change was observed after either treatment in fasting blood glucose, serum total cholesterol and triglycerides. HDL-cholesterol concentration was significantly decreased on metoprolol, from 41 to 36 mg/dl (p〈0.05), while oxprenolol did not affect it at all. The difference might depend on intrinsic sympathomimetic activity which is possessed by oxprenolol and which metoprolol lacks.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00548763
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  • 6
    Digitale Medien
    Digitale Medien
    Pafenolol, a new β1-selective blocking agent, in mild hypertension. Result of an inpatient study and a subsequent outpatient follow-up (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 549-553 
    Details
    ISSN: 1432-1041
    Schlagwort(e): pafenolol ; hypertension ; antihypertensive therapy ; beta1-blocking agent ; exercise tests ; plasma levels
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Pafenolol, a new selective adrenergic beta1-blocking agent, has been tested for the first time in 6 hypertensive patients. After single oral doses of pafenolol 25 to 100 mg, there was a marked reduction in heart rate and systolic blood pressure during exercise tests. These effects were dose dependent. A significant positive correlation was found between the reduction in heart rate during exercise and the plasma level of pafenolol 5 hours after drug intake (correlation coefficient r=0.94). Side effects were mild and seemed to be dose dependent. It is concluded that this new beta1-blocking agent was effective in reducing blood pressure and was well tolerated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00543483
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  • 7
    Digitale Medien
    Digitale Medien
    Pharmacodynamics and kinetics of etozolin/ozolinone in hypertensive patients with normal and impaired kidney function (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 687-693 
    Details
    ISSN: 1432-1041
    Schlagwort(e): etozolin ; ozolinone ; furosemide ; hypertension ; renin ; catecholamines ; chronic renal failure ; steady state kinetics ; plasma levels
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The effect on urinary electrolyte excretion, renin release and plasma norepinephrine of single oral doses of 400 mg etozolin (E) and of 40 mg furosemide (F) were studied in hypertensive patients with normal (n=6) and impaired kidney function (n=6). E caused a marked saluresis up to 24 hours, showing its long duration of action. F, however, displayed a brief, brisk peak diuresis, followed by a rebound from the 4th to the 24th hours. The brisk peak diuresis induced by F was associated with pronounced release of renin, almost twice that induced by E. In chronic renal failure the renin release in relation to the magnitude of the diuresis was increased, i.e. the sensitivity of these patients to changes in water homeostasis was increased. E and F stimulated the sympathetic system to roughly the same extent. Patients with essential hypertension had higher plasma levels of norepinephrine than hypertensive patients with chronic renal failure. In addition, hypertensive patients with normal renal function (n=4) and varying degrees of renal impairment (n=11) were also given 400 mg daily for 2 weeks. Effects on blood pressure and electrolyte homeostasis were monitored, as well as the plasma kinetics of metabolite I, ozolinone. At the end of the 2 week treatment E had significantly lowered systolic (−12 mm Hg) and diastolic (−9 mm Hg) blood pressure, and had produced a significant loss of body weight, without altering plasma electrolytes or blood chemistry. There was no accumulation of the effective metabolite ozolinone under conditions of severe impairment of kidney function. It is concluded that E can effectively control high blood pressure in patients with normal and impaired kidney function. Its effective metabolite ozolinone did not accumulate in chronic renal failure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00541926
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  • 8
    Digitale Medien
    Digitale Medien
    Once daily indapamide in the treatment of the elderly and young hypertensive (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 397-405 
    Details
    ISSN: 1432-1041
    Schlagwort(e): indapamide ; hypertension ; cardiovascular reflexes ; diuretic effect ; blood pressure variability
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Nine elderly and 11 young hypertensives underwent continuous ambulatory monitoring of blood pressure (BP), assessment of cardiovascular reflexes and M-mode echocardiography as hospital in-patients prior to treatment with once-daily indapamide (2.5 mg). They were followed as out-patients for 4 months during which time casual BP was measured at monthly intervals. The patients were then readmitted to hospital and studied using the same protocol under similar standardised conditions. The results showed that indapamide reduced casual and ambulatory BP in both young and elderly although the most marked effect was seen on systolic BP. Assessment of cardiovascular reflexes indicates that at least part of the hypotensive action of indapamide is due to a diuretic effect. Treatment with indapamide has comparable results on both young and elderly.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00549585
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  • 9
    Digitale Medien
    Digitale Medien
    Long-term effects of captopril on renal function in hypertensive patients (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 315-323 
    Details
    ISSN: 1432-1041
    Schlagwort(e): captopril ; hypertension ; glomerular filtration ; para-aminohippuric acid ; renal function ; severe drug reaction ; nephrotic syndrome
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The effect of captopril up to 450 mg/day on blood pressure and renal function were investigated during sustained treatment of 10 patients whose severe hypertension had not responded to previous therapy. All the patients were kept on diuretics and most of them on β-blockers, too. A control determination of glomerular filtration rate (GFR) and para-aminohippuric acid clearance (CPAH) was performed during the prior treatment. The effect of the addition (or substitution) of captopril were assessed after an average of 25 days (short-term) and 26 weeks (long-term). Short-term treatment produced a 15.5% decrease in mean blood pressure and interindividually variable effects on renal function. On average GFR was somewhat lower and CPAH slightly higher than the control values (not significant). This pattern is quite similar to the effects of most other antihypertensive drugs. On long-term therapy GFR rose by a mean of 9% (NS) and CPAH by 17% (p〈0.02). However, in a patient who developed a captopril-induced nephrotic syndrome, GFR dropped to 56% and CPAH to 50% of the control values. In another patient a transient rise in serum creatinine accompanied a severe drug reaction.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00548761
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  • 10
    Digitale Medien
    Digitale Medien
    Effect of beta-blocking drugs on beta-cell function and insulin sensitivity in hypertensive non-diabetic patients (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 13-17 
    Details
    ISSN: 1432-1041
    Schlagwort(e): beta-blocking drugs ; insulin sensitivity ; pancreatic beta-cell function ; hypertension ; propranolol ; atenolol ; insulin secretion ; plasma GIP
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The effects of two beta-blocking drugs on endogenous insulin secretion and insulin sensitivity were investigated in a double blind cross-over study in 13 hypertensive patients. The patients were randomly allocated to each of three 2-week treatment periods with propranolol 80 mg b.i.d., atenolol 50 mg b.i.d. and placebo b.i.d. Endogenous insulin secretion was assessed by measuring serum insulin and C-peptide before and 6 min after iv administration of glucagon; insulin sensitivity was determined by measuring insulin binding to erythrocytes, and as the glucose disappearance rate (KITT) after i.v. insulin. Fasting concentrations of serum free fatty acids (S-FFA) and plasma gastric inhibitory polypeptide (P-GIP) were also recorded during the three study periods. Both propranolol and atenolol reduced blood pressure, heart rate and S-FFA concentrations compared to placebo, and all patients showed measurable plasma concentrations of propranolol and atenolol. The results can be considered representative, therefore, of clinical beta-blockade. The two drugs did not significantly influence the fasting blood glucose level. There was an increase in fasting and glucagon-stimulated serum C-peptide concentration during propranolol therapy compared with placebo (p=0.037 and p=0.030, respectively), although this was not reflected by a significant change in serum insulin. Propranolol and atenolol did not significantly influence insulin binding to erythrocytes, but they clearly reduced the glucose disappearance rate KITT was compared to placebo (p=0.0036 and p=0.0003, respectively). The findings support the view that beta-blocking drugs can influence glucose metabolism by mechanisms other than inhibition of endogenous insulin secretion.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00546701
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  • 11
    Digitale Medien
    Digitale Medien
    Should the acetylator phenotype be determined when prescribing hydralazine for hypertension? (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 39-42 
    Details
    ISSN: 1432-1041
    Schlagwort(e): acetylator phenotype ; hydralazine response ; hypertension ; blood pressure control ; lupus syndrome
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The role of acetylator phenotype in determining the response to hydralazine when it was added to diuretic and β-blocker at doses not exceeding 200 mg daily was examined in 57 hypertensive patients. 81% of rapid acetylators needed 200 mg hydralazine daily compared to 38% of slow acetylators (p〈0.01). Despite higher doses of hydralazine the blood pressure was controlled in only 27% of rapid acetylators compared to 65% of slow acetylators (p〈0.02). The relation of acetylator phenotype to blood pressure response was statistically independent of initial blood pressure, age, sex, body weight and serum creatinine (p〈0.005). Current recommendations on hydralazine dosage are unsatisfactory for the 40% of hypertensive patients who are rapid acetylators. We suggest measurement of the acetylator phenotype in patients who respond incompletely to 200 mg hydralazine daily. About 70% of these patients will be rapid acetylators in whom the dose of hydralazine can be increased safely.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00546706
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  • 12
    Digitale Medien
    Digitale Medien
    Comparison of methods to detect side-effect on clinical application of chloranolol, a beta-adrenergic receptor inhibitor (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 555-562 
    Details
    ISSN: 1432-1041
    Schlagwort(e): Tobanum® ; beta-blocker ; chloranolol ; hypertension ; angina pectoris ; arrhythmia ; detection methods
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The incidence of side-effects on administration of chloranolol (Tobanum®), a beta-adrenergic receptor blocking drug, to 2066 patients with hypertension, angina pectoris or arrhythmias was measured by three different methods. In 600 patients in an efficacy trial (Group 1) both spontaneously reported complaints and objective signs were tabulated. A side effect — directed method, utilising a questionnaire containing a list of possible side-effects was also used, with the questionnaire being completed by the physician. 35 questions referred to anticipated and other side-effects. The trial was performed in two groups: in 537 patients a placebo was also given (Group 2), and in another set of 929 patients (Group 3) the questionnaire inquiry was performed uncontrolled, without placebo. All three groups were comparable in their distribution of sexes, ages and diagnoses, the mean daily dose of chloranolol its use alone or in combination, and in a similar duration of treatment. 55% of all patients received chloranolol therapy for a period of more than 3 months. The ratio of in- and outpatients was 1:5. The side-effect incidence was independent of the age and sex of the patients and of the dose of chloranolol. The incidence was also unaffected whether chloranolol was used alone or in combination. The number of side-effects differed markedly between the three groups, their ratio was 1:10:24 in Groups 1, 2 and 3. Two-thirds of the side-effects subsided spontaneously within 1 month of their onset. The duration of the side-effects varied according to their character: cardiorespiratory side-effects were of the shortest duration and those affecting the central nervous system were the most enduring. The appreciable differences in incidence could be attributed to the methods of collection of the data. It has been stated that placebo controlled trials using a detailed questionnaire are the most suitable for estimating the incidence of side-effects; recording side-effects spontaneously reported by patients are insufficiently sensitive, and uncontrolled trials using a questionnaire have been shown to be too sensitive. The revealed incidence of side effects leading to interruption of treatment is less affected by the method chosen. In 100 patients (4.8%) therapy had to be suspended because of the side-effects of chloranolol (Group 1: 1%, Group 2: 6.20%, Group 3: 6.6%). Comparison of the incidence of cessation of therapy due to side-effects did not show an appreciable difference between the various beta-adrenergic receptor blocking agents, including chloranolol.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00543484
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  • 13
    Digitale Medien
    Digitale Medien
    Propranolol vs metoprolol vs labetalol: A comparative study in essential hypertension (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 1-6 
    Details
    ISSN: 1432-1041
    Schlagwort(e): hypertension ; beta-blockers ; propranolol ; metoprolol ; labetalol ; exercise ; heart rate ; blood pressure
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary In a double blind, within patient investigation of twenty-four patients (nineteen males and five females) with a mean age of 46.3 years (SD 10.9 years) with mild to moderate essential hypertension a comparison between equipotent beta-blocking doses of propranolol, metoprolol and labetalol was carried out. Blood pressure and pulse rate were measured in lying, sitting and standing positions and before, during and after isometric and dynamic exercise. Peak expiratory flow was recorded before and during dynamic exercise. All the active treatments were better than placebo in reducing blood pressure and heart rate. Comparing the effects of treatment, labetalol lowered sitting diastolic pressure significantly more than propranolol and standing diastolic pressure than both propranolol and metoprolol. Metoprolol and propranolol were more effective in reducing heart rate. Propranolol significantly reduced peak flow rate compared to labetalol. During the exercise, both isometric and dynamic, the heart rate and the blood pressure, both systolic and diastolic, of the treated patients were lower than those on placebo. There was little difference between the drugs in the influence on blood pressure, but metoprolol and propranolol were significantly more effective than labetalol in lowering the heart rate.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00546699
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  • 14
    Digitale Medien
    Digitale Medien
    Reduced peripheral vascular symptoms in elderly patients treated with α-methyldopa — A comparison with propranolol (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 325-329 
    Details
    ISSN: 1432-1041
    Schlagwort(e): alpha-methyldopa ; propranolol ; hypertension ; side effects ; blood pressure control
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary A multicentre study of 6–10 weeks duration was performed in 60 ambulant hypertensive patients aged over 60 years to compare the efficacy of methyldopa and propranolol with particular reference to the occurrence of cold extremities and sleep disturbances. Blood pressure was effectively controlled by both drugs being reduced from a mean of 180/108 mmHg to 161/93 with methyldopa and 180/108 to 162/94 with propranolol. More patients treated with methyldopa (74%) achieved the target diastolic blood pressure of 95 mmHg or below compared with those treated with propranolol (58%). Side effects were more frequent in the propranolol group necessitating the withdrawal of four patients from the study. Only one patient on methyldopa was withdrawn. The incidence of cold extremities was significantly greater with propranolol. The occurrence of sleep disturbances was similar in both groups. In this group of elderly patients methyldopa was better tolerated than propranolol.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00548762
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  • 15
    Digitale Medien
    Digitale Medien
    Effect of indapamide on renal plasma flow, glomerular filtration rate and arginine vasopressin in plasma in essential hypertension (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 543-547 
    Details
    ISSN: 1432-1041
    Schlagwort(e): indapamide ; hypertension ; glomerular filtration ; arginine vasopressin ; free water clearance ; blood pressure
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Renal plasma flow (RPF), glomerular filtration rate (GFR), arginine vasopressin in plasma (AVP), free water clearance ( $${\text{C}}_{{\text{H}}_{\text{2}} {\text{O}}}$$ ) and blood pressure (BP) were determined in 11 patients with essential hypertension at the end of 3 consecutive periods of observation each of 6 of weeks duration; indapamide 2.5 mg daily was given in period 2 and placebo in periods 1 and 3. RPF and GFR were reduced by 9% and BP by 9%/14% supine and 14%/12% standing during indapamide treatment. Changes in renal haemodynamics were not correlated with those in BP. AVP was not significantly altered by indapamide and was not correlated with BP. Indapamide reduced $${\text{C}}_{{\text{H}}_{\text{2}} {\text{O}}}$$ possibly due to the reduction in GFR. It is concluded that indapamide evidently induces redistribution of the cardiac output, with enhanced muscle blood flow and reduced renal perfussion, and that AVP does not seem to be involved in blood pressure regulation in mild to moderate essential hypertension under basal conditions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00543482
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  • 16
    Digitale Medien
    Digitale Medien
    Is the feeling of cold extremities experienced by hypertensive patients due to their disease or their treatment? (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 47-49 
    Details
    ISSN: 1432-1041
    Schlagwort(e): beta-blockers ; hypertension ; ISA ; CS ; cold extremities
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Patients with essential hypertension were interviewed prior to entering therapeutic studies in general practice. Patients' age, sex and details of antihypertensive therapy (if any) were noted, as were their spontaneously reported symptoms. Complaints of cold extremities were highest in those taking a beta-blocker (4.1%). Those untreated or taking other therapies complained less often. Those patients taking a beta-blocker with ISA complained less often (3.1%) of cold extremities than those taking a beta-blocker without ISA (5.2%).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00553153
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  • 17
    Digitale Medien
    Digitale Medien
    Long acting nifedipine in the treatment of severe hypertension (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 13-17 
    Details
    ISSN: 1432-1041
    Schlagwort(e): nifedipine ; hypertension ; blood pressure decrease ; drug combination
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The medication of patients receiving hydralazine, captopril and minoxidil was replaced by a new galenical form, long-acting nifedipine. An additional decrease in blood pressure was observed in most of the patients. Renal function was maintained in all of them. Adverse reactions may be reduced by the use of long-acting nifedipine, which would permit a reduction in the dosage of captopril and minoxidil.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02395199
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  • 18
    Digitale Medien
    Digitale Medien
    Evidence for a peripheral component in the sympatholytic actions of clonidine and guanfacine in man (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 23-27 
    Details
    ISSN: 1432-1041
    Schlagwort(e): hypertension ; alpha2-adrenoceptors ; blood pressure ; clonidine ; guanfacine ; healthy volunteers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The time courses of the changes in plasma growth hormone and noradrenaline concentrations in response to 15 min infusions of clonidine 0.2 mgs and guanfacine 2 mgs, were studied in six normal volunteers, in a double-blind, randomised, crossover study. Plasma noradrenaline fell within 15 min of the commencement of drug administration, by 36±14% after clonidine (p〈0.05) and by 32±11% (p〈0.05) after guanfacine. Plasma growth hormone was not significantly elevated until the 30th minute to 12.0±4.7 lU/ml (p〈0.05) after clonidine and 14.7±11.5 lU/ml (p〈0.05) after guanfacine, having been undetectable prior to both drugs. The reduction in plasma noradrenaline by these α2-adrenergic agonists, prior to activation of central adrenoceptors as detected by changes in plasma growth hormone, is evidence for a peripheral component in their sympatholytic effect.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02395201
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  • 19
    Digitale Medien
    Digitale Medien
    Crossover comparison of moxonidine and clonidine in mild to moderate hypertension (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 147-152 
    Details
    ISSN: 1432-1041
    Schlagwort(e): moxonidine ; clonidine ; hypertension ; double-blind crossover ; side-effects ; withdrawal
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The antihypertensive effect of moxonidine·HCl·H2O (MOX) was compared with that of clonidine·HCl (CLON) in a randomized double-blind crossover study in 20 hypertensive outpatients (BP range 154–178/96–108 mmHg). After 2 weeks without antihypertensive medication, either MOX 0.2 mg daily or CLON 0.2 mg daily was given and the dose was titrated until the diastolic blood pressure fell below 90 mmHg. The first treatment period was continued for 2 weeks and, after crossover without a wash-out period, it was followed by the second treatment for a further 2 weeks. Within the first 4 days of administration 0.2–0.4 mg of either agent caused a significant decrease in BP (p〈0.001) from a mean of 166/100 mmHg to 149/86 mmHg after CLON (approx. −10/−14%), and 163/99 mmHg to 146/84 mmHg after MOX (approx. −10/−15%). No significant difference in the fall in BP or pulse rate was detected between the two drugs. In the mean daily dose of 0.3 mg both drugs showed the same antihypertensive activity, but on CLON a higher incidence of side effects (p=0.003) was noted, and after discontinuation of therapy a more rapid rise in BP (systolic BP p〈0.01, diastolic BP p〈0.02) was found. 17 patients on CLON complained of side effects, especially tiredness and dry mouth, whilst only 6 patients on MOX were affected (p=0.003).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00544037
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  • 20
    Digitale Medien
    Digitale Medien
    Systemic and cardiac haemodynamic interactions between guanfacine and hydrallazine in hypertensive patients (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 393-396 
    Details
    ISSN: 1432-1041
    Schlagwort(e): guanfacine ; hydrallazine ; hypertension ; sympathetic nervous activity ; plasma renin activity ; cardiac and systemic haemodynamics ; blood pressure ; limb blood flow ; limb vascular resistance
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The effect of guanfacine and hydrallazine on cardiovascular haemodynamics and on sympathetic nervous activity has been studied in 16 patients with essential hypertension. Two groups of patients were investigated: in Group A guanfacine brought the blood pressure back to normal (diastolic blood pressure ⩽90 mmHg), and in Group B diastolic blood pressure was 〉 90 mmHg and required the addition of hydrallazine. Guanfacine significantly decreased heart rate, plasma renin activity and urinary excretion of noradrenaline, without altering cardiac contractility. In Group B, guanfacine 2 to 6 mg/day produced a significant decrease in blood pressure from 178.7/112.4 to 164.4/102.9 mmHg and in heart rate from 77.1 to 62.7 beats/min after 4 weeks of treatment. Guanfacine did not significantly alter preejection period, cardiac output or total peripheral resistance. Hydrallazine 50 to 300 mg/day caused a further reduction in blood pressure from 164.4/102.9 to 150.7/90.2 mmHg and an increase in heart rate from 62.7 to 72.1 beats/min. Limb blood flow was increased from 4.55 to 5.93 ml/100 g/min and limb vascular resistance was decreased from 39.55 to 23.6 mmHg 100 g·min/ml. Hydrallazine also caused a slight increase in plasma renin activity and urinary excretion of noradrenaline. It is concluded that guanfacine is a useful agent to block a hydrallazine-induced increase in sympathetic nervous activity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00549584
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  • 21
    Digitale Medien
    Digitale Medien
    Piretanide, a potassium stable diuretic, in the treatment of essential hypertension (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 407-414 
    Details
    ISSN: 1432-1041
    Schlagwort(e): piretanide ; hypertension ; triamterene ; double blind comparison ; potassium ; magnesium ; side-effects ; serum electrolytes ; serum parameters
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary In a randomized, double blind, parallel group study in out patients with mild to moderate essential hypertension the effects of piretanide on serum electrolytes and on blood pressure were compared with those of triamterene alone and the combination piretanide + triamterene. 136 patients entered the study; 18 patients did not fulfill the inclusion criteria (RRdiast was below 95 mmHg or above 120 mmHg) at the end of the placebo period, 6 dropped out due to side effects, and 1 due to lack of efficacy. Data from 1 patient were not evaluated because the patient did not come regularly for checkups. The results for 110 patients were analyzed. Piretanide 6 mg b.d. and piretanide 6 mg + triamterene 50 mg b.d. produced a significant reduction both in supine and erect blood pressure, which was evident at 2 weeks and which increased over the ensuing 12 week trial period. A mean maximal fall of 16.5% was noted in the piretanide group and 15% in the piretanide + triamterene group. Triamterene alone (50 mg b.d.) also reduced diastolic and systolic blood pressures but the reduction was significantly less (diastolic blood pressure) than in both the piretanide groups, and it showed a more rapid return to pretreatment level during a placebo washout phase at the end of the study. A reduction in standing diastolic blood pressure below 95 mmHg was attained in 84% of patients in the piretanide group, 82% in the piretanide + triamterene group and in only 58% of the triamterene group. There were no significant changes within groups nor differences between the three groups in serum potassium or magnesium. 7 patients were withdrawn from the study because of side-effects due to too marked a clinical action (polyuria, orthostatic disorders and hypotension), one from the piretanide group, and the others in the piretanide + triamterene group. One patient in the triamterene group left the study prematurely due to the lack of effect.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00549586
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  • 22
    Digitale Medien
    Digitale Medien
    Double-blind comparison of once-daily bopindolol, pindolol and atenolol in essential hypertension (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 529-534 
    Details
    ISSN: 1432-1041
    Schlagwort(e): beta-adrenoceptor blocking agents ; hypertension ; adverse reactions ; atenolol ; bopindolol ; pindolol
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The efficacy of once-daily bopindolol, a nonselectiveβ-adrenoceptor blocking agent with partial agonist activity, and of pindolol and atenolol in the treatment of essential hypertension has been compared. 369 patients were investigated in a double-blind parallel-group study. The treatment period was 10 weeks. Blood pressure normalisation (diastolic BP equal to or less than 90 mmHg) was to be achieved by a stepwise increase in the dose of the test drugs, and, if required, by addition of a diuretic. Normalisation of blood pressure was achieved in 71 to 76% of the subjects, with no significant differences between bopindolol, pindolol, and atenolol. Special attention was given to evaluation of side effects by using two methods for registration of all adverse events during the study. A low incidence of drug-induced side effects was observed, with no significant difference between bopindolol, pindolol, and atenolol. There was no evidence of unsuspected adverse reactions due to bopindolol.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00556887
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  • 23
    Digitale Medien
    Digitale Medien
    Comparison of hydrochlorothiazide and atenolol as initial treatment in uncomplicated hypertension (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 157-162 
    Details
    ISSN: 1432-1041
    Schlagwort(e): hypertension ; hydrochlorothiazide ; atenolol ; side effects ; therapeutic efficacy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary After screening a local population in the northern part of The Netherlands for hypertension, 119 patients with a diastolic pressure (DP) between 95 and 120 mmHg were randomised and treated either with 50 mg hydrochlorothiazide (n=59) or 100 mg atenolol (n=60). After 1 month of treatment 6 patients in the hydrochlorothiazide group and 24 patients in the atenolol group had reached a DP⩽90 mmHg (p〈0.001). 43 of the 50 non-responders to hydrochlorothiazide were switched to atenolol and 30 of the 35 non-responders to atenolol were changed to hydrochlorothiazide. One month after the switch 19 patients in the atenolol group and 2 patients in the hydrochlorothiazide group had reached a DP⩽90 mmHg (p〈0.001). After 6 months of treatment 32 of the 43 atenolol responders and 7 of the 8 hydrochlorothiazide responders were still receiving the same medication, as their DP was still⩽90 mmHg. Non-responders to either medication were given the combination (n=46). 21 patients now became normotensive as did a further 10 after increasing the dose of atenolol to 200 mg. Thus, in all 70 patients had a blood pressure ⩽90 mmHg after treatment for 4 months. Both drugs induced a significant reduction in the total of number of complaints after 1 month of treatment. They did not differ from each other. The reduction was seen both in responders and non-responders and persisted during treatment for 6 months. It is concluded that in terms of short-term efficacy the cardioselective, hydrophilic beta adrenoceptor-blocking drug atenolol is preferable to hydrochlorothiazide in the treatment of uncomplicated hypertension.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00630280
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  • 24
    Digitale Medien
    Digitale Medien
    Pharmacokinetics and hypotensive effect in healthy volunteers of pinacidil, a new potent vasodilator (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 603-608 
    Details
    ISSN: 1432-1041
    Schlagwort(e): pinacidil ; hypertension ; pinacidil pyridine-N-oxide ; urinary excretion ; protein binding ; pharmacokinetics ; healthy volunteers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Preliminary investigation in 3 healthy volunteers suggested that intravenous pinacidil in a dose of 0.2 mg/kg had a potent but well-tolerated hypotensive action in the supine position. Facial flushing, uncomfortable chest sensation and distressing postural hypotension occurred at serum concentrations above 300 ng/ml. Pinacidil, 0.2 mg/kg, was given intravenously over 4 min to 15 healthy volunteers in the supine position. Maximum fall in mean arterial pressure (MAP) was 15.7±6.0 mmHg. Maximum rise in heart rate was 23.8±6.6 beats/min. Pinacidil serum distribution half-life ( $${\text{T}}_{{\raise0.7ex\hbox{${\text{1}}$} \!\mathord{\left/ {\vphantom {{\text{1}} {{\text{2}}\alpha }}}\right.\kern-\nulldelimiterspace}\!\lower0.7ex\hbox{${{\text{2}}\alpha }$}}}$$ ) was 13.4±8.5 min and elimination half-life ( $${\text{T}}_{{\raise0.7ex\hbox{${\text{1}}$} \!\mathord{\left/ {\vphantom {{\text{1}} {{\text{2}}\beta }}}\right.\kern-\nulldelimiterspace}\!\lower0.7ex\hbox{${{\text{2}}\beta }$}}}$$ ) was 2.13±0.49 h. The apparent volume of distribution (Vdβ) was 90.3±13.21 and total body clearance was 31.1±9.61/h. Pinacidil was approximately 40% bound to plasma protein over the concentration range 40–400 ng/ml. Urinary excretion of unchanged pinacidil accounted for 5.7 ± 1.3% of the administered dose over 24 hours and urinary excretion of the major metabolite, pinacidil pyridine-N-oxide, was 31.6±9.2% of the administered dose. It was concluded that intravenous pinacidil is a potent vasodilator hypotensive compound, with a duration of action between 1.5 and 2 h.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00543493
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  • 25
    Digitale Medien
    Digitale Medien
    Pharmacokinetics of endralazine (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 661-661 
    Details
    ISSN: 1432-1041
    Schlagwort(e): endralazine ; hypertension ; elimination half-liefe ; compartment model
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00543509
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  • 26
    Digitale Medien
    Digitale Medien
    Long acting nifedipine in the treatment of severe hypertension (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 13-17 
    Details
    ISSN: 1432-1041
    Schlagwort(e): nifedipine ; hypertension ; blood pressure decrease ; drug combination
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The medication of patients receiving hydralazine, captopril and minoxidil was replaced by a new galenical form, long-acting nifedipine. An additional decrease in blood pressure was observed in most of the patients. Renal function was maintained in all of them. Adverse reactions may be reduced by the use of long-acting nifedipine, which would permit a reduction in the dosage of captopril and minoxidil.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00553147
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  • 27
    Digitale Medien
    Digitale Medien
    Evidence for a peripheral component in the sympatholytic actions of clonidine and guanfacine in man (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 23-27 
    Details
    ISSN: 1432-1041
    Schlagwort(e): hypertension ; alpha2-adrenoceptors ; blood pressure ; clonidine ; guanfacine ; healthy volunteers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary The time courses of the changes in plasma growth hormone and noradrenaline concentrations in response to 15 min infusions of clonidine 0.2 mgs and guanfacine 2 mgs, were studied in six normal volunteers, in a double-blind, randomised, crossover study. Plasma noradrenaline fell within 15 min of the commencement of drug administration, by 36±14% after clonidine (p〈0.05) and by 32±11% (p〈0.05) after guanfacine. Plasma growth hormone was not significantly elevated until the 30th minute to 12.0±4.7 lU/ml (p〈0.05) after clonidine and 14.7±11.5 lU/ml (p〈0.05) after guanfacine, having been undetectable prior to both drugs. The reduction in plasma noradrenaline by these α2-adrenergic agonists, prior to activation of central adrenoceptors as detected by changes in plasma growth hormone, is evidence for a peripheral component in their sympatholytic effect.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00553149
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  • 28
    Digitale Medien
    Digitale Medien
    Is the feeling of cold extremities experienced by hypertensive patients due to their disease or their treatment? (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 47-49 
    Details
    ISSN: 1432-1041
    Schlagwort(e): beta-blockers ; hypertension ; ISA ; CS ; cold extremities
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary Patients with essential hypertension were interviewed prior to entering therapeutic studies in general practice. Patients’ age, sex and details of antihypertensive therapy (if any) were noted, as were their spontaneously reported symptoms. Complaints of cold extremities were highest in those taking a beta-blocker (4.1%). Those untreated or taking other therapies complained less often. Those patients taking a beta-blocker with ISA complained less often (3.1%) of cold extremities than those taking a beta-blocker without ISA (5.2%).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02395205
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  • 29
    Digitale Medien
    Digitale Medien
    Pinacidil, a new vasodilator, in the treatment of patients with moderate to severe hypertension (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 287-289 
    Details
    ISSN: 1432-1041
    Schlagwort(e): pinacidil ; hypertension ; vasodilator ; patients ; side-effects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Summary A new vasodilator drug, pinacidil, N″-cyano-N-4-pyridyl-N′-1, 2,2-trimethylpropylguanidine, was studied in an open trial in 15 patients with moderate to severe hypertension. Four patients received pinacidil monotherapy, and in 11 patients it was used with a diuretic or a beta-blocker. In all but one patient normotension was achieved with a mean daily pinacidil dose of 46.7 mg b.i.d. (range 20–100 mg). Side effects were few and were action-related. There was no evidence of early toxicity. Pinacidil is a promising new antihypertensive vasodilator, which deserves further clinical evaluation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00542161
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  • 30
    Digitale Medien
    Digitale Medien
    Phylogenetic influences in microbial hydroxylation of terpenoids (1994)
    Springer
    World journal of microbiology and biotechnology 10 (1994), S. 88-92 
    Details
    ISSN: 1573-0972
    Schlagwort(e): Intelligent screening ; microbial hydroxylation ; multivariate analyses ; taxonomy ; terpenoids
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Abstract Forty strains of bacteria and 60 of fungi were screened with globulol, 1,8-cineol and cedrol and the strains compared, on the basis of the resulting products, using multivariate analyses. The taxonomic position of the strains is mirrored in their biotransformation capability. Fungi and bacteria, fungal phyla, and Gram-positive and-negative bacteria could all be distinguished in a discriminant analysis using 12 substrates. Hierarchical clustering yielded five groups of strains with distinct biotransformation activity. Such clustering will allow a more efficient screening than before.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00357570
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  • 31
    Digitale Medien
    Digitale Medien
    Age-related changes in linoleic acid bioconversion by isolated hepatocytes from spontaneously hypertensive and normotensive rats (1994)
    Springer
    Molecular and cellular biochemistry 141 (1994), S. 9-13 
    Details
    ISSN: 1573-4919
    Schlagwort(e): hepatocytes ; hypertension ; age ; desaturase ; essential fatty acids
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Abstract This study points out the hepatocyte interconversion of the linoleic acid family during hypertension. Hepatocyte Δ6 desaturase activity was higher in 1 month-old spontaneously hypertensive rats than in normotensive controls. A similar tendency was observed in 6 month-old SHR. Δ5 desaturase activity was higher only in 1 month-old spontaneously hypertensive rats as compared to controls. Desaturase activities were particularly high at the age of 6 months. The hepatocyte fatty acid composition showed an impairment of n-6 polyunsaturated fatty acid metabolism in spontaneously hypertensive animals. Changes were greater in the young prehypertensive rats than in adults. A storage of n-3 long chain fatty acids is remarkable in adult hypertensive rats, suggesting an alteration in peroxisomal oxidation. Such modifications may be related to the prostaglandin precursors availability to peripheral tissues such as kidney.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00935585
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  • 32
    Digitale Medien
    Digitale Medien
    Three species of rust fungi (Uredinales) from Okinawa, Japan (1994)
    Springer
    Mycoscience 35 (1994), S. 125-129 
    Details
    ISSN: 1618-2545
    Schlagwort(e): rust fungus ; taxonomy ; Puccinia tarennicola ; Uredinales ; Uredo daphniphylli ; Uredo pipturi
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Three species of rust fungi were reported based on the specimens collected in the islands of the Yaeyama group and Okinawa, Japan.Puccinia tarennicola onTarenna gracilipes andUredo daphniphylli onDaphniphyllum teijsmannii were described as new species.Villebrunea frutescens was added to the host plants ofUredo pipturi.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02318488
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  • 33
    Digitale Medien
    Digitale Medien
    Pollen diameter and fertility in nine species ofPuccinellia (Poaceae) (1994)
    Springer
    Plant systematics and evolution 191 (1994), S. 161-170 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Poaceae ; Puccinellia ; Pollen maximum diameter ; pollen fertility ; taxonomy ; Flora of the Iberian Peninsula
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Diameter and fertility of pollen grains were surveyed in nine species ofPuccinellia Parl. (Poaceae), mainly from the Iberian Peninsula, allowing information about reproductive behaviour and biological characteristics of pollen of these taxa. Maximum diameter was measured with an image processor and fertility was evaluated by staining the grains with Müntzing's mixture. Significant differences in both characters were found between the taxa. In consequence, maximum diameter and fertility proved to have some taxonomic relevance inPuccinellia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984662
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  • 34
    Digitale Medien
    Digitale Medien
    Isoenzyme evidence on the systematics ofHordeum sectionMarina (Poaceae) (1994)
    Springer
    Plant systematics and evolution 191 (1994), S. 213-226 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Poaceae ; Hordeum ; Isoenzymes ; taxonomy ; phylogenetic species ; sibling species
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Morphological differentiation of diploid accessions ofHordeum marinum Huds. s.l. into two varieties, var.marinum and var.fouilladei (Rouy)Nevski is associated with isoenzyme differentiation. The tetraploid form ofH. marinum s.l. exhibited fixed heterozygosity of several heterozymes with one homoeozyme shared with var.fouilladei and the second homoeozyme not found in the two diploids. It also differed from both diploids in the mobility of glucose-6-phosphate dehydrogenase. All three taxa differed in morphs of EST-A. It is concluded that the tetraploid is an allopolyploid with one genome closely related to the diploid var.fouilladei and with the second genome divergent from those of both diploids by genes for unique morphs of eight homoeozymes. On the basis of the isoenzyme data, three phylogenetic sibling species—H. marinum Huds. s.str. (2x),H. geniculatum All. s.str. (= var.fouilladei, 2x), andH. caudatum Jaaska, spec. nova (4x), are proposed within theH. marinum s.l. complex and a key is given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984666
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  • 35
    Digitale Medien
    Digitale Medien
    Chemical variation in two species of theLecanora subfusca group (Lecanoraceae, lichenizedAscomycotina) (1994)
    Springer
    Plant systematics and evolution 191 (1994), S. 227-236 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Lichenized fungi ; Lecanoraceae ; Lecanora epibryon ; L. subimmersa ; Chemotaxonomy ; biogeography ; taxonomy ; xanthones
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The chemical variation inLecanora epibryon andL. subimmersa, two species of theL. subfusca group, has been examined. In both species the chemical differences are correlated with geographical distribution, but not with morphological differences. As a consequence the chemotypes are recognized at subspecific level. InL. epibryon three chemical races are segregated according to the various chemosyndromes present. Subspeciesepibryon, containing atranorin and triterpenoids, occurs in the northern hemisphere and South America, while the other two subspecies occur only in the southern hemisphere. The subsp.broccha (Nyl.)Lumbsch, comb. nova, contains atranorin, the stictic acid and the 2,5,7-trichloro-3-O-methylnorlichexanthone chemosyndromes, while subsp.xanthophora Lumbsch, subsp. nova, is similar but lacks the stictic acid chemosyndrome. Two chemical races occur in the pantropical speciesL. subimmersa. While subsp.subimmersa contains atranorin and zeorin, subsp.ramboldii Lumbsch & Elix, subsp. nova, contains an additional ten chlorinated xanthones.L. impressa is reduced to synonymy toL. subimmersa.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984667
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  • 36
    Digitale Medien
    Digitale Medien
    The genusIschnea (Asteraceae, Senecioneae) in New Guinea (1994)
    Springer
    Plant systematics and evolution 191 (1994), S. 247-263 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Asteraceae ; Senecioneae ; Blennospermatinae ; Ischnea ; Revision ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The endemic New Guinean genusIschnea F. Muell. (Asteraceae, Senecioneae, Blennospermatinae) is revised and four species are recognized. Characters of special interest are tubeless ray florets, male disc florets, and secretory spaces in leaves. A principal component analysis is made on theIschnea elachoglossa F. Muell. complex which shows great variation. One new species,I. capellana Swenson, from the Star Mountains, is described. A key, illustrations, and distribution maps to all species are supplied.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984669
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  • 37
    Digitale Medien
    Digitale Medien
    Phylogenetic relationships of theJuglandaceae (1994)
    Springer
    Plant systematics and evolution 192 (1994), S. 11-29 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Hamamelidae ; Juglandaceae ; rbcL ; phylogeny ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A cladistic analysis of molecular data from the chloroplast generbcL was used to examine the taxonomic relationships of the walnut family (Juglandaceae). In addition, chemical and morphological data from a previous study byHufford (1992) were incorporated, expanded, and analyzed independently and in combination with the molecular data. The results of these analyses suggest that theJuglandaceae are more closely related to theFagaceae, Betulaceae, Casuarinaceae, andUrticaceae and their relatives (sensuCronquist 1981) than they are to theAnacardiaceae (sensuThorne 1983). However, sequence data fromrbcL also suggest a relationship between the higherHamamelidae and certain families in theRosidae sensuCronquist 1981 (such asRosaceae andRhamnaceae), an outcome which would add credence to the widely accepted view of the polyphyletic nature of theHamamelidae.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00985904
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  • 38
    Digitale Medien
    Digitale Medien
    Chemistry and micromorphology of compound epicuticular wax crystalloids (Strelitzia type) (1994)
    Springer
    Plant systematics and evolution 193 (1994), S. 115-123 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Strelitzia ; Heliconia ; Typha ; Benincasa ; Epicuticular wax ; wax ultrastructure ; wax chemistry ; systematics ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Certain non-liliiflorous taxa within the monocotyledons (e.g.,Strelitzia, Heliconia, Typha) are characterized by compound epicuticular wax rodlets (Strelitzia type). Similar rodlets are also encountered on the surface of the dicotyledonous plantBenincasa hispida (Thunb.)Cogn. Chemical analysis of the surface wax from both sources showed that the rodlets are chemically distinct. The rodlets of the monocotyledons consist exclusively of aliphatic wax lipids, mainly wax esters. In contrast, the rodlets ofBenincasa are cheifly composed of triterpenol acetates and triterpenols. Formation of rodlets is therefore interpreted as ultrastructural convergency. It is concluded that taxonomical studies on wax crystalloids can be misleading when interpreted in terms of micromorphology of crystalloids only.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00983545
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  • 39
    Digitale Medien
    Digitale Medien
    The delimitation and taxonomic position of the tropical African generaLeptactina andDictyandra (Rubiaceae) (1984)
    Springer
    Plant systematics and evolution 145 (1984), S. 105-118 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Rubiaceae ; Coffeeae ; Gardenieae ; Pavetteae ; Dictyandra ; Leptactina ; Tarenna ; Pavetta ; Dictyandra congolana sp. nova ; taxonomy ; morphology ; seed-coat ; palynology ; Flora of tropical Africa
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The closely related African generaDictyandra andLeptactina are redelimited. The two genera are distinguished by long tubular corolla-tubes with included anthers (Leptactina) vs. much shorter tubes with exserted anthers (Dictyandra), rather than—as previously thought—presence or absence of multilocellate anthers. The discovery of a new species (Dictyandra congolana from the Congo and W-Zaire) confirms this. It can be concluded, especially from comparative morphological studies of fruits and seeds, thatDictyandra andLeptactina are related toPavetta, Tarenna, Ixora, etc., i.e. the group of genera in theCoffeeae s.l. with terminal inflorescences. It is proposed that the tribePavetteae be revived to accomodate those genera.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984034
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  • 40
    Digitale Medien
    Digitale Medien
    An ultrastructural comparison betweenSpermatozopsis andDunaliella (Chlorophyceae) (1984)
    Springer
    Plant systematics and evolution 146 (1984), S. 31-46 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Chlorophyceae ; Spermatozopsis ; Dunaliella ; D. salina ; Green flagellates ; ultrastructure ; taxonomy ; systematics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The ultrastructure of the type species of the genusDunaliella, D. salina, has been reinvestigated in an attempt to clarify the relationships betweenDunaliella andSpermatozopsis. Dunaliella salina differs in the following ultrastructural characters fromSpermatozopsis (as exemplified byS. similis Preisig etMelkonian): presence of a distinctive surface coat covering the plasmalemma; presence of a prominent pyrenoid (with pairs of thylakoids partially entering the pyrenoid matrix); dictyosomes parabasal; endoplasmic reticulum closely underlying the plasmalemma around most of the cell; contractile vacuoles absent; cell form ovoid to elongated and not spirally twisted; mitochondrial profiles near the flagellar apparatus. Differences in the ultrastructure of the flagellar apparatus: basal body angle more or less fixed; distal connecting fibre cross-striated; system II fibre (rhizoplast) present, associated with mitochondrial profile; system I fibre underlying two-stranded microtubular root; mating structure present. These ultrastructural differences justify distinction between the two taxa at generic level. The problematical status of “freshwater” species ofDunaliella is briefly discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984052
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  • 41
    Digitale Medien
    Digitale Medien
    A light and electron microscopical study of the green flagellateSpermatozopsis similis spec. nova (1984)
    Springer
    Plant systematics and evolution 146 (1984), S. 57-74 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Chlorophyceae ; Spermatozopsis similis ; Green flagellate ; new species ; algal culture ; electron microscopy ; taxonomy ; phylogeny
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The green flagellateSpermatozopsis similis spec. nova has been studied in culture by light and electron microscopy. The flagellate bears two flagella, is naked and has a characteristic crescent and spirally twisted cell shape. The two flagella are of subequal length, each with a prominent hair-point. Each cell contains two contractile vacuoles, a single chloroplast with an anterior eyespot but lacking a pyrenoid, an anteriorly located nucleus, a single dictyosome associated with the posterior end of the nucleus, a single mitochondrion posterior to the nucleus and associated with a small microbody, some conspicuous vacuoles, and a greater number of secondary cytoskeletal microtubules which probably are responsible for maintaining the peculiar shape of this species. SinceS. similis in culture is only biflagellate, it cannot be accommodated within the quadriflagellate, but otherwise very similar speciesS. exsultans. Spermatozopsis similis is compared with other green flagellates and is shown to share common ultrastructural characters withChlamydomonas-type green algae.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984054
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  • 42
    Digitale Medien
    Digitale Medien
    Spiniferomonas septispina andS. enigmata, two new algal species confusing the distinction betweenSpiniferomonas andChrysosphaerella (Chrysophyceae) (1984)
    Springer
    Plant systematics and evolution 148 (1984), S. 103-117 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Algae ; Chrysophyceae ; Spiniferomonas septispina sp. n. ; S. enigmata sp. n. ; Chrysosphaerella ; Morphology ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Two new species of non-colonial silica-scaled chrysophytes were discovered in Ontario and were assigned to the genusSpiniferomonas (Chrysophyceae) owing to their solitary cell habit. Scale structure in the two new species is distinctive but includes features common to bothSpiniferomonas andChrysosphaerella. The use of scale structure as the main diagnostic feature to distinguish the two genera is no longer acceptable. A more expedient separation of the two genera based on cell habit (solitary vs. colonial) is proposed and includes the transfer ofChrysospharella salina Birch-Andersen andChrysosphaerella coronacircumspina Wujek & Kristiansen to the genusSpiniferomonas as new combinations. The proposed revision is consistent with existing generic circumscriptions of other ochromonadalean forms with either solitary or colonial cell habit.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984572
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  • 43
    Digitale Medien
    Digitale Medien
    Über einen intrazellulären Parasiten beiCryptomonas (Cryptophyceae), II. (1984)
    Springer
    Plant systematics and evolution 148 (1984), S. 165-167 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Cryptophyceae ; Bodonaceae ; Proteromonas steinii sp. n. ; Cryptomonas spp. div. ; Intracellular parasite ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A new intracellular parasite inCryptomonas spp. div. previously known is described asProteromonas steinii spec. nova. The flagellate (infectious) stage isBodo-like, with a distinct kinetoplast. The immobile parasitic stage occurs in the cells of Cryptomonads as a multinucleate trophocyst with a thin mucilage envelope (pseudocyst), while the hypnocyst is uninucleate, walled and bearing two horned projections.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00984576
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  • 44
    Digitale Medien
    Digitale Medien
    Gynoecium and perianth inZanthoxylum s.l. (Rutaceae) (1994)
    Springer
    Plant systematics and evolution 189 (1994), S. 165-191 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Angiosperms ; Rutaceae ; Zanthoxylum ; Fagara ; Flower morphology ; perianth ; gynoecium ; acrostylous and anacrostylous-basistylous carpels ; compitum ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The question whether the uniseriate perianth ofZanthoxylum L. s. str. is homologous with the calyx or the corolla of taxa included inFagara, or of an independent origin, has been controversial for a long time, but the arguments mostly have remained theoretical. The present investigation of floral structures indicates that there are two different types of uniseriate perianth inZanthoxylum s. str. Therefore, this taxon does not represent a natural group and should be united withFagara asZanthoxylum s.l. The infrageneric taxonomy of this genus is still very ambiguous. It is shown that differences in indumentum, number of sepals and petals (5-4-3) resp. perianth segments (4–9), stamens (3–6), and free carpels (1–5) are of systematic relevance. Particularly important but so far neglected is carpel shape, where an acrostylous and an anacrostylous-basistylous type can be recognized. Stigmata of 2 or more carpels mostly fuse to form a compitum. 4–5-merous flowers with calyx and corolla, and acrostylous carpels are considered as plesiomorphic character states in the genus. On the basis of ± corresponding morphological and phytochemical progressions a working hypothesis about the relationships withinZanthoxylum s.l. is presented in graphical form (Fig. 9).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00939724
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  • 45
    Digitale Medien
    Digitale Medien
    Allozymic and morphological relationships amongAndrocymbium gramineum, A. europaeum, andA. psammophilum (Colchicaceae) (1994)
    Springer
    Plant systematics and evolution 191 (1994), S. 111-126 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Colchicaceae ; Androcymbium ; Allozymes ; evolution ; taxonomy ; genetic conservation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Levels of allozymic and morphological diversity amongAndrocymbium gramineum, A. europaeum, andA. psammophilum have been assessed using data on 17 allozyme loci and 18 morphological characters. No apparent pattern of geographic or ecological variation was found. Our results also suggest thatA. gramineum andA. europaeum should be considered members of a single species and that the insular speciesA. psammophilum can no longer be thought of as the result of a founder effect fromA. gramineum. Intrapopulational variability was greater than inter-populational variability at both levels studied, which is of strategic interest for the “ex-situ” conservation of these threatened endemic species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00985346
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  • 46
    Digitale Medien
    Digitale Medien
    Terpsinoe musica Ehrenberg (Bacillariophyceae, centrales), with emphasis on protoplast and cell division (1994)
    Springer
    Aquatic ecology 28 (1994), S. 63-69 
    Details
    ISSN: 1573-5125
    Schlagwort(e): taxonomy ; morphology ; morphogenesis ; Terpsinoe musica
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The morphology of intact cells ofTerpsinoe musica Ehrenberg and aspects of their morphogenesis have not been described before. Cells attach by apical mucus pads to form long bands; the chloroplast consists of numerous small granules. Formation of the new valvae on cell division starts from a central primary silicification site immediately adjacent to the postmitotic nuclei. The septa mentioned in reference works are erroneous interpretations of freely suspended transverse bars, formed at a later moment than the valvae. The absence of septa, and the presence of a labiate process said to be absent in Terpsinoe americana (Bailey) Ralfs, indicate the necessity of a taxonomic revision of the genus. The features said to distinguishTerpsinoe intermedia Grunow are unstable and cannot be regarded to define a separate entity. No evidence has been found for the euryhaline, brackish and even marine ecology mentioned in the literature forTerpsinoe musica, which typically lives in hardwater springs of (sub)tropical regions. The studies were made on populations collected alive at an interval of over half a century, from the same location.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02334246
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  • 47
    Digitale Medien
    Digitale Medien
    Ustilaginales of Commelinaceae (1994)
    Springer
    Mycoscience 35 (1994), S. 353-360 
    Details
    ISSN: 1618-2545
    Schlagwort(e): taxonomy ; Ustilaginales of Commelinaceae ; Ustilago combensis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The seven reported smut fungi on Commelinaceae are revised. Of these, five are recognised and described:Ustilago aneilematis, U. burkillii, U. commelinae, U. nawaschinii andU. tinantiae. Entyloma commelinae is considered to be a doubtful species andU. rwandensis is a synonym ofU. aneilematis. A new species,Ustilago combensis (type onCommelina benghalensis) is proposed. A key to thesee species is presented.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02268505
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  • 48
    Digitale Medien
    Digitale Medien
    Changes in β-adrenoreceptor density in intact lymphocytes of hypertensive subjects (1984)
    Springer
    Bulletin of experimental biology and medicine 98 (1984), S. 1633-1635 
    Details
    ISSN: 1573-8221
    Schlagwort(e): hypertension ; β-adrenoreceptors ; lymphocytes ; man
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00802937
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  • 49
    Digitale Medien
    Digitale Medien
    Neptune: A marine micropaleontology database (1994)
    Springer
    Mathematical geology 26 (1994), S. 817-832 
    Details
    ISSN: 1573-8868
    Schlagwort(e): micropaleontology ; Neogene ; chronology ; taxonomy ; DSDP ; ODP
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Mathematik
    Notizen: Abstract Marine micropaleontology must in the future provide more precise chronologic and paleoenvironmental information, which in turn must be based on better, more consistent taxonomic and distributional data. Better tools for synthesis and standardization of this data are needed, as the ever expanding published literature is rapidly becoming unmanageable by purely manual compilation methods. The micropaleontology group at the ETH has developed a large relational database of marine microfossil data to partially meet this need. It currently contains biogeographic data on the distribution in Deep Sea Drilling Project (DSDP) and Ocean Drilling Program (ODP) holes of nearly 8,000 species of Cenozoic planktonic foraminifera, radiolaria, diatoms and calcareous nannofossils. The database also includes full stratigraphic occurrence (range chart) data for these fossil groups from more than 100 selected Neogene holes. A particular feature of the database is that all sample information and species names in the original reports are linked to newly created, updatable, comprehensive age models and synonymy lists which reflect modern chronology and taxonomic usage. Searches of the database automatically make use of this information in producing reports. Species ' occurrences, including first and last occurrence information, can be further analyzed using external spreadsheet and statistics packages; plotted by mapping programs; or displayed by a new program which creates composite age-range charts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02083119
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  • 50
    Digitale Medien
    Digitale Medien
    Nutlet sculpturing of selectedTeucrium species (Lamiaceae): A character of taxonomic significance (1994)
    Springer
    Plant systematics and evolution 192 (1994), S. 199-214 
    Details
    ISSN: 1615-6110
    Schlagwort(e): Lamiaceae ; Teucrium ; SEM ; nutlet sculpturing ; oil glands ; trichomes ; micromorphology ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Nutlet sculpturing of 23Teucrium species belonging to six sections was studied. The nutlets of analysed species were characterized by the presence of the oil glands of various density. SectionTeucrium is well defined by very densely distributed trichomes and oil glands on nutlets. Trichomes on nutlets were absent in all other species, except inT. marum from sect.Chamaedrys. Sect.Polium is a homogeneous group, distinguished from the other sections. There are some similarities of this sect. with sect.Scordium. Species of sect.Chamaedrys are heterogeneous and overlap according to the surface sculpturing characters with the other sections. The significance of nutlet microcharacters as additional taxonomical markers in the infrageneric classification of the genusTeucrium is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00986252
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  • 51
    Digitale Medien
    Digitale Medien
    Bolivia potato germplasm collecting expeditions 1993, 1994: Taxonomy and new germplasm resources (1994)
    Springer
    Euphytica 79 (1994), S. 137-148 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Bolivia ; chromosome numbers ; genebank ; germplasm ; Solanum sect. Petota ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary We conducted joint Bolivia/The Netherlands/United States wild potato (Solanum sect. Petota Dumort.) germplasm collecting expeditions in Bolivia from February 1-April 15, 1993, and January 1-February 26, 1994. The goals of the expeditions were to collect germplasm and gather data for continuing taxonomic studies of the approximately 43 taxa of Bolivian wild potatoes accepted by current taxonomists. We made 223 collections, 135 as true seed collections, 54 as tubers, 19 only as herbarium collections. Two recent taxonomic treatments of Bolivian wild and cultivated potatoes have clarified the taxonomy and distribution of these plants, but there are continuing disagreements between treatments regarding species boundaries and interrelationships. These disagreements, and the variability we observed in natural populations, present problems for identifications. We summarize the state of germplasm collections for Bolivia, provide our field data regarding the taxonomy of Bolivian wild potatoes, provide recommendations for future collecting, and provide new chromosome counts for S. hoopesii, S. ugentii, and S. yungasense.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00023585
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  • 52
    Digitale Medien
    Digitale Medien
    Chloroplast DNA diversity in eggplant (Solanum melongena) and its related species S. incanum and S. marginatum (1994)
    Springer
    Euphytica 80 (1994), S. 1-4 
    Details
    ISSN: 1573-5060
    Schlagwort(e): chloroplast DNA ; eggplant ; evolution ; Solanum incanum ; Solanum melongena ; Solanum marginatum ; taxonomy ; variation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Total chloroplast DNA (cpDNA) from Solanum incanum, a wild relative of eggplant, was used to probe total DNAs from 27 accessions of S. melongena (eggplant), S. incanum sensu lato and S. marginatum, all of which are quite similar in their morphology. There is a wide diversity in plastotypes within S. incanum sensu lato. On the other hand, only one restriction fragment pattern difference was detected between S. melongena and S. incanum sensu lato. The restriction fragment patterns generated by eight enzymes were recorded as present or absent, and a matrix for all fragment positions, enzymes and accessions was used for cluster analysis. In the dendrogram, it is suggested that S. marginatum is not nearly as closely related to S. melongena and S. incanum sensu lato as previously supposed, and some of accessions treated as S. incanum sensu lato, originated from Southern Africa, should be called S. lichtensteinii.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00039291
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  • 53
    Digitale Medien
    Digitale Medien
    Recent developments inRhizobium taxonomy (1994)
    Springer
    Plant and soil 161 (1994), S. 11-20 
    Details
    ISSN: 1573-5036
    Schlagwort(e): Bradyrhizobium ; genetic diversity ; Rhizobium ; systematics ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Recent developments inRhizobium taxonomy are presented from a molecular and evolutionary point of view. Analyses of ribosomal RNA gene sequences provide a solid basis to infer phylogenies in the Rhizobiaceae family. These studies confirmed thatRhizobium andBradyrhizobium are only distantly related and showed thatRhizobium andBradyrhizobium are related to other groups of bacteria that are not plant symbionts.Rhizobium andAgrobacterium species are intermixed. Differences in plasmid content may explain to a good extent the different behavior ofRhizobium andAgrobacterium as symbionts or pathogens. Other approaches to identify and classify bacteria such as DNA-DNA hybridization, fatty acid analysis, RFLP and RPD-PCR techniques and phylogenies derived from other genes are in general agreement to the groupings derived by ribosomal sequences. Only a small proportion of nodulated legumes have been sampled for their symbionts and more knowledge is required on the systematics and taxonomy ofRhizobium andBradyrhizobium species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02183081
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  • 54
    Digitale Medien
    Digitale Medien
    The rotifer fauna and population dynamics of Lake Studer 2 (Kerguelen Archipelago) with description ofFilinia terminalis kergueleniensis n. ssp. and a new record ofKeratella sancta Russel 1944 (1984)
    Springer
    Hydrobiologia 108 (1984), S. 57-64 
    Details
    ISSN: 1573-5117
    Schlagwort(e): rotifers ; taxonomy ; population dynamics ; biomass
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Filinia terminalis kergueleniensis nov. spp. (FamilyFiliniidae Bartos 1959), from Lake Studer 2 is described and figured.Filinia terminalis kergueleniensis differs from the type in length of bristles and their insertion.Keratella sancta was found again; it is the third record after its discovery by Russel 1944 in New Zealand.Notholca cf.jugosa Gosse 1889 is also found in the plankton of the subantarctic lake. The new subspecies andKeratella sancta occur all year round, whileNotholca cf.jugosa is sporadic. Population dynamics appear to be dependent on changes in temperature and chlorophyll content. We have estimated the relative contribution of these three species to community biomass from their numerical abundance and measured volumes. The major community biomass peak lasts from March to June with a secondary maximum between October and January.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00939173
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  • 55
    Digitale Medien
    Digitale Medien
    Two new and three redescribed species of Viscosia (Nematoda, Oncholaimidae) (1984)
    Springer
    Hydrobiologia 114 (1984), S. 123-147 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Nematodes ; freeliving ; marine ; brackish ; taxonomy ; new species ; Viscosia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Viscosia coomansi sp. nov. and Viscosia heterolaina sp. nov. are described from Lake Grevelingen and Eastern Scheldt (The Netherlands). Viscosia glabra (Bastian, 1865) de Man 1890, Viscosia franzii Boucher 1977, and Viscosia viscosa (Bastian 1865) de Man 1890 are redescribed, taking into account new important characters. Juvenile specimens are depicted for V. viscosa. Viscosia carnleyensis Ditlevsen, 1921 is synonymized with Viscosia glabra (Bastian, 1865). Mononcholaimus viscosus Allgén, 1930 and Mononcholaimus elegans sensu Schuurmans-Stekhoven, 1942, 1950 (nec. Kreis, 1924) are synonymized with Viscosia viscosa (Bastian, 1865).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00018110
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  • 56
    Digitale Medien
    Digitale Medien
    The undescribed female of Pseudostenhelia secunda Wells, 1971 (Copepoda Harpacticoida) and keys to the genus (1984)
    Springer
    Hydrobiologia 114 (1984), S. 149-156 
    Details
    ISSN: 1573-5117
    Schlagwort(e): female ; Pseudostenhelia secunda ; Copepoda ; Harpacticoida ; taxonomy ; identification keys ; India
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The hitherto unknown female of Pseudostenhelia secunda Wells, 1971 collected from Lake Kolleru, India, is described and illustrated. It can be readily diagnosed inter alia by the abdominal ornamentation, and by the setation of legs 2–4. The original description of the male of this species is supplemented. Further, keys are furnished for identifying both sexes of the three known species of the genus Pseudostenhelia Wells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00018111
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  • 57
    Digitale Medien
    Digitale Medien
    Some problems in the taxonomy of Chinese species of Gracilaria (Rhodophyta) (1984)
    Springer
    Hydrobiologia 116-117 (1984), S. 59-62 
    Details
    ISSN: 1573-5117
    Schlagwort(e): seaweed ; Gracilaria ; taxonomy ; systematics ; marine algae ; morphology
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00027640
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  • 58
    Digitale Medien
    Digitale Medien
    Developmental studies on cultured endolithic conchocelis (Rhodophyta) (1984)
    Springer
    Hydrobiologia 116-117 (1984), S. 201-208 
    Details
    ISSN: 1573-5117
    Schlagwort(e): seaweed ; conchocelis ; endolith ; Rhodophyta ; culture ; development ; taxonomy ; morphology ; influence of substrate mineralogy ; morphometry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00027666
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  • 59
    Digitale Medien
    Digitale Medien
    A new aspect of Ulva vegetation along the Japanese coast (1984)
    Springer
    Hydrobiologia 116-117 (1984), S. 229-232 
    Details
    ISSN: 1573-5117
    Schlagwort(e): seaweed ; Ulva ; taxonomy ; phenology
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00027672
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  • 60
    Digitale Medien
    Digitale Medien
    New records of Malaysian marine algae (1994)
    Springer
    Hydrobiologia 285 (1994), S. 123-129 
    Details
    ISSN: 1573-5117
    Schlagwort(e): marine algae ; Malaysia ; new records ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Checklists of the marine algae of Malaysia have been published. The last checklist included the marine algae of Singapore. The checklist recorded 212 taxa for the region. This paper lists an additional 7 taxa of Chlorophyta, 18 taxa of Rhodophyta and 5 taxa of Phaeophyta, which had been left out of the last checklist. These include marine algae from Pulau Pinang, Pulau Redang and Pulau Sibu. In addition, new records of Cyanophyta (2 species), Chlorophyta (4 species), Rhodophyta (10 species) and Phaeophyta (3 species) are reported.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00005660
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  • 61
    Digitale Medien
    Digitale Medien
    New records of Rotifera from India (1994)
    Springer
    Hydrobiologia 287 (1994), S. 251-258 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Rotifera ; India ; taxonomy ; zoogeography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Fifteen species of monogonont Rotifera are recorded from India for the first time. These are Lecane acanthinula (Hauer), L. aspasia Myers, L. monostyla (Daday), L. ruttneri (Hauer), L. simonneae Segers, Lepadella costatoides Segers, L. cf. favorita Klement, L. minuta (Montet), L. triba Myers, Notommata pachyura (Gosse), N. saccigera Ehrenberg, Sinantherina semibullata (Thorpe), Trichocerca chattoni (De Beauchamp), T. kostei Segers and Taphrocampa selenura (Gosse). Taxonomic and/or zoogeographic notes are added, when appropriate.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00006374
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  • 62
    Digitale Medien
    Digitale Medien
    Four new species of Halicyclops Norman, 1903 (Copepoda, Cyclopoida) from Brazil (1984)
    Springer
    Hydrobiologia 119 (1984), S. 107-117 
    Details
    ISSN: 1573-5117
    Schlagwort(e): taxonomy ; estuarine crustaceans ; Copepoda ; Halicyclops ; Neotropical Region ; Brazil
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Four new species of Halicyclops are described and figured from plankton samples of the brackish waters of Pomonga River, Sergipe State (NE Brazil). The ornamentation of the median apical setae of the furcal rami is proposed as useful diagnostic character for species distinction.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00011950
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  • 63
    Digitale Medien
    Digitale Medien
    Desmoscolecids (Nematode) from New Georgia, Solomon Islands (1984)
    Springer
    Hydrobiologia 119 (1984), S. 181-191 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Desmoscolecida ; Desmoscolex ; Nematoda ; Solomon Islands ; morphology ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Two new desmoscolecid species are described: Desmoscolex koloensis sp. nov. and D. parakoloensis sp. nov. Additional information is given on Desmoscolex (Desmolorenzenia) montana, D. sieverti and D. fennicus. The genus Desmolorenzenia is considered a subgenus of Desmoscolex. Pareudesmoscolex lacustris represents a juvenile state of Desmocolex dussarti. Some reflections are made on terrestrial and freshwater desmoscolecids.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00015209
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  • 64
    Digitale Medien
    Digitale Medien
    Taxonomy of Gracilaria: Evaluation of some aspects of reproductive structure (1984)
    Springer
    Hydrobiologia 116-117 (1984), S. 41-46 
    Details
    ISSN: 1573-5117
    Schlagwort(e): seaweed ; Gracilaria ; spermatangia ; gonimoblast ; tetrasporangia ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00027636
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  • 65
    Digitale Medien
    Digitale Medien
    Phylogenetic and taxonomic problems in freshwater Oligochaeta with special emphasis on chitinous structures in Tubificinae (1984)
    Springer
    Hydrobiologia 115 (1984), S. 19-23 
    Details
    ISSN: 1573-5117
    Schlagwort(e): aquatic Oligochaeta ; Tubificinae ; phylogeny ; taxonomy ; chitinous penis sheaths
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Setae and chitinous penis sheaths are the main characters used to distinguish genera and species of the subfamily Tubificinae. Genital setae and penis sheaths are of functional importance to facilitate copulation. Similar structures in different genera may be homologous or products of parallel evolution (homoiologous). Form and dimensions of the penis sheaths of many tubificine species are very variable. Transspecific overlap of quantitative species characters can make the determination of specimens in the genus Limnodrilus difficult. The configuration of the distal ends of the penis sheaths is an important character to distinguish Limnodrilus species. The definition of the intraspecific variability of this morphological character is problematic.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00027888
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  • 66
    Digitale Medien
    Digitale Medien
    Taxonomic features used in discriminating some central and eastern Pacific species of Gracilaria (1984)
    Springer
    Hydrobiologia 116-117 (1984), S. 47-50 
    Details
    ISSN: 1573-5117
    Schlagwort(e): seaweed ; Gracilaria ; taxonomy ; marine algae ; red algae ; agarweeds
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00027637
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  • 67
    Digitale Medien
    Digitale Medien
    An evaluation of some vegetative features and some interesting problems in Japanese populations of Gracilaria (1984)
    Springer
    Hydrobiologia 116-117 (1984), S. 51-54 
    Details
    ISSN: 1573-5117
    Schlagwort(e): seaweed ; Gracilaria ; taxonomy ; systematics ; red algae ; Japanese algae
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00027638
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  • 68
    Digitale Medien
    Digitale Medien
    Lepadella beyensi (Rotifera Monogononta: Colurellidae), a new species from the Canadian High Arctic (1994)
    Springer
    Hydrobiologia 294 (1994), S. 61-63 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Rotifera ; new species ; taxonomy ; Canada ; High Arctic
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A new species of Lepadella was discovered during an investigation of the Rotifera of freshwater ponds in Cambridge Bay, Victoria Island, N.W.T., Canada. A description of the new species is given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00017626
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  • 69
    Digitale Medien
    Digitale Medien
    A preliminary review of the taxonomic characters used for the systematics of the genus Trichodrilus Claparède (Oligochaeta, Lumbriculidae) (1994)
    Springer
    Hydrobiologia 278 (1994), S. 35-51 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Oligochaeta ; Lumbriculidae ; Trichodrilus ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The taxonomic characters of the 34 known species of the genus Trichodrilus Claparède, 1862 are discussed as a basis for a systematic revision of the genus. Some additions to the species descriptions are made subsequent to examination of type collections. Trichodrilus campoyi Rodriguez, 1988, originally described as a subspecies of T. strandi Hrabě, 1936, is emended to specific rank. Trichodrilus icenorum Beddard, 1920 is regarded as a synonym of T. allobrogum Claparède, 1862. The extension of pharyngeal glands is demonstrated to be a fixed or a variable character depending on the species. Presence or absence of posterior lateral blood vessels or pattern of anterior blood vessels are not well documented for a significant proportion of the species and these characters need to be tested for environmentally induced variation. Taxonomic value of structural traits is strengthened against characters related to size. Thus, a key to the species of the genus is provided, emphasising such structural characters.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00142310
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  • 70
    Digitale Medien
    Digitale Medien
    The damselfishes (Pisces: Osteichthyes: Pomacentridae) of Peninsular Malaysia and Singapore: systematics, ecology and conservation (1994)
    Springer
    Hydrobiologia 285 (1994), S. 49-58 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Pomacentridae ; Malaysia ; Singapore ; taxonomy ; ecology ; conservation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Damselfishes (Pomacentridae) are among the most common of reef fishes in tropical seas, comprising 320 species in all, with 268 species alone in the Indo-West Pacific regions. 15 genera (Abudefduf, Amblyglyphidodon, Amphiprion, Chelioprion, Chromis, Chrysiptera, Dascyllus, Pristotis, Dischistodus, Hemiglyphidodon, Neoglyphidodon, Neopomacentrus, Plectroglyphidodon, Pomacentrus, Stegastes) and at least 39 species inhabit the waters of Peninsular Malaysia and Singapore. They are important ecologically because many species are extremely abundant in reefs, and also economically, as several are collected in large numbers for the lucrative aquarium trade. This demand has led to some fishermen using destructive methods in obtaining the fishes, to the point that original standing populations may not be recoverable. This threat poses a need for conservation of the reefs. The present study based primarily on fishes collected from the waters of Singapore and specimens from the Zoological Reference Collection at the National University of Singapore, will serve the dual purpose of establishing a current species list for Malaysia and Singapore, and to update and clarify the local taxonomy of the group. An annotated list (with localities) is provided of the known or reported species to aid studies on reefs.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00005653
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  • 71
    Digitale Medien
    Digitale Medien
    Genetic diversity and systematic relationships in sweetpotato (Ipomoea batatas (L.) Lam.) and related species as revealed by RAPD analysis (1994)
    Springer
    Genetic resources and crop evolution 41 (1994), S. 165-173 
    Details
    ISSN: 1573-5109
    Schlagwort(e): Convolvulaceae ; genetic diversity ; germplasm ; taxonomy ; polymerase chain reaction ; sweetpotato
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Fifteen 10mer primers, in combination with the Stoffel fragment, were used to detect random amplified polymorphic DNA (RAPDs) among 26 accessions of sweetpotato (I. batatas (L.) Lam.) from Oceania, Peru, the Philippines, and the United States and between 8 Ipomoea species from section Batatas. Phenetic and principal coordinate analysis of the 56 polymorphisms detected within the hexaploid I. batatas clearly delineated the South Pacific and the Peruvian sweetpotato lines. The two U.S. cultivars clustered with the Oceanic materials. Cladistic and phenetic analysis of 8 Ipomoea species supports previously published phylogenies based on morphological and RFLP data. Among the species examined, I. tabascana, I. trifida and the tetraploid forms of I. batatas from Mexico and Ecuador, including I. batatas var. apiculata, are the taxa most closely related to the cultivated hexaploid I. batatas. These findings support the utility of RAPD markers for evaluating genetic diversity in sweetpotato and for establishing taxonomic and evolutionary relationships in Ipomoea.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00051633
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  • 72
    Digitale Medien
    Digitale Medien
    The genus Mixodiaptomus Kiefer, 1932 (Copepoda, Diaptomidae) in Spain (1984)
    Springer
    Hydrobiologia 118 (1984), S. 135-146 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Copepoda ; Diaptomidae ; taxonomy ; biogeography ; ecology ; Mixodiaptomus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The distribution of the Calanoid genus Mixodiaptomus was studied in a large number of pools and small lakes scattered over Spain. Four species occur: M. incrassatus, M. kupelwieseri, M. ortizi and M. laciniatus, the latter in 2 subspecies (M. laciniatus laciniatus and M. laciniatus atlantis). M. ortizi is described as a new species. M. laciniatus lives in mountains, while all other species occur in the plains. M. incrassatus is found all over the country, M. kupelwieseri only in the eastern part of Catalonia, M. laciniatus atlantis in Andalucia and M. ortizi in the central lands called Mesetas. All live in little mineralized waters and only M. incrassatus and M. laciniatus atlantis occur in clayey waters.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00021038
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  • 73
    Digitale Medien
    Digitale Medien
    A canthobrama centisquama Heckel and the validity of the genus Mirogrex Goren, Fishelson and Trewavas (Osteichthyes: Cyprinidae) (1984)
    Springer
    Hydrobiologia 109 (1984), S. 275-278 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Cyprinidae ; Middle East ; taxonomy ; zoogeography ; Acanthobrama ; Mirogrex
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The poorly known cyprinid fish Acanthobrama centisquama is re-described and its distribution is clarified. It is found in the Orontes basin and not waters around Damascus. The genus Mirogrex is synonymised with Acanthobrama.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00007745
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  • 74
    Digitale Medien
    Digitale Medien
    Pseudomoraria triglavensis gen. n., sp. n. (Copepoda, Harpacticoida) from a high-alpine reservoir in Slovenia (1994)
    Springer
    Hydrobiologia 294 (1994), S. 89-98 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Copepoda ; Harpacticoida ; taxonomy ; ecology ; high-alpine lakes ; Slovenia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Numerous specimens of Pseudomoraria triglavensis gen.n., sp.n. were collected from small, high-alpine, reservoir Močilec. The reservoir is situated in the centre of Triglav national park (NW Slovenia) at an altitude of 1690 m. The new genus differs from related genera Moraria, Morariopsis and Paramorariopsis by the reduced articulation of exopodites and endopodites in both sexes. It also differs from Moraria by possessing sexually dimorphic furcal rami. Detail taxonomic differences between these related genera and their ecology are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00016848
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  • 75
    Digitale Medien
    Digitale Medien
    Conidiogenesis, nutritional physiology and taxonomy ofAureobasidium andHormonema (1994)
    Springer
    Antonie van Leeuwenhoek 65 (1994), S. 41-54 
    Details
    ISSN: 1572-9699
    Schlagwort(e): black yeasts ; Aureobasidium ; Hormonema ; Kabatiella ; Pringsheimia ; Dothiora ; Dothidae ; Dothideaceae ; conidiogenesis ; physiology ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Diagnostic criteria for the distinction of the slightly osmophilic species,Aureobasidium pullulans, and the opportunistic pathogen on conifers,Hormonema dematioides, are provided. Reliable identification requires a combination of characters of conidiogenesis, expansion growth and assimilative abilities. Relationships with species ofKabatiella, and with the teleomorph generaPringsheimia, Dothidea andDothiora, all havingHormonema-like cultural states, are discussed. An identification key is provided.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00878278
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  • 76
    Digitale Medien
    Digitale Medien
    Intraspecific metabolic diversity among strains ofBurkholderia cepacia isolated from decayed onions, soils, and the clinical environment (1994)
    Springer
    Antonie van Leeuwenhoek 65 (1994), S. 111-131 
    Details
    ISSN: 1572-9699
    Schlagwort(e): BIOLOG ; coefficients of resemblance ; infraspecific variation ; Pseudomonas cepacia ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A collection of 218 strains ofBurkholderia cepacia (including 18% strain replicates) was assembled from organic soils, decayed onions, and clinical sources. Each strain was characterized for virulence to onion, catabolic ability using the Biolog GN microtiter plate, and several other behaviors. Overall test reproducibility was estimated at 98%. The results obtained using the Biolog GN system corresponded well to those obtained using standard methods. Three coefficients of resemblance (Gower similarity, pattern difference, and Jaccard similarity) were calculated and clustered by the group-average method. The sorted matrices and phenograms, while giving evidence of an underlying phenetic structure to theB. cepacia nomenspecies, gave little evidence of sorting by broad source of isolation. Strains isolated from within fields or samples were frequently found to be similar, however, strains isolated from fields with similar cropping histories were not. The Gower-transformed centroids of ordained clusters were projected in a principal coordinate system and estimates of disjunction were calculated. Strains ofB. cepacia were shown to be non-uniformly distributed in taxonomic space. Strains isolated by serial dilution on onion slices formed a tight phenetic cluster which includes the type strain of the nomenspecies and that of a synonymous group (Pseudomonas multivorans); the strains in this phenon were generally virulent to onion and were partially differentiated from others by pectolytic behavior and by the production of diffusible pigment on King's medium A. Further characterization should better resolve the taxonomy of the nomenspecies.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00871753
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  • 77
    Digitale Medien
    Digitale Medien
    The rotifer fauna and population dynamics of Lake Studer 2 (Kerguelen Archipelago) with description of Filinia terminalis kergueleniensis n. ssp. and a new record of Keratella sancta Russel 1944 (1984)
    Springer
    Hydrobiologia 108 (1984), S. 57-64 
    Details
    ISSN: 1573-5117
    Schlagwort(e): rotifers ; taxonomy ; population dynamics ; biomass
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Filinia terminalis kergueleniensis nov. spp. (Family Filiniidae Bartos 1959), from Lake Studer 2 is described and figured. Filinia terminalis kergueleniensis differs from the type in length of bristles and their insertion. Keratella sancta was found again; it is the third record after its discovery by Russel 1944 in New Zealand. Notholca cf. jugosa Gosse 1889 is also found in the plankton of the subantarctic lake. The new subspecies and Keratella sancta occur all year round, while Notholca cf. jugosa is sporadic. Population dynamics appear to be dependent on changes in temperature and chlorophyll content. We have estimated the relative contribution of these three species to community biomass from their numerical abundance and measured volumes. The major community biomass peak lasts from March to June with a secondary maximum between October and January.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00028183
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  • 78
    Digitale Medien
    Digitale Medien
    The rotifer fauna and population dynamics of Lake Studer 2 (Kerguelen Archipelago) with description ofFilinia terminalis kergueleniensis n. ssp. and a new record ofKeratella sancta Russel 1944 (1984)
    Springer
    Hydrobiologia 108 (1984), S. 57-64 
    Details
    ISSN: 1573-5117
    Schlagwort(e): rotifers ; taxonomy ; population dynamics ; biomass
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Filinia terminalis kergueleniensis nov. spp. (FamilyFiliniidae Bartos 1959), from Lake Studer 2 is described and figured.Filinia terminalis kergueleniensis differs from the type in length of bristles and their insertion.Keratella sancta was found again; it is the third record after its discovery by Russel 1944 in New Zealand.Notholca cf.jugosa Gosse 1889 is also found in the plankton of the subantarctic lake. The new subspecies andKeratella sancta occur all year round, whileNotholca cf.jugosa is sporadic. Population dynamics appear to be dependent on changes in temperature and chlorophyll content. We have estimated the relative contribution of these three species to community biomass from their numerical abundance and measured volumes. The major community biomass peak lasts from March to June with a secondary maximum between October and January.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02391633
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  • 79
    Digitale Medien
    Digitale Medien
    Revision of the African species of the genus Mesocyclops Sars, 1914 (Copepoda: Cyclopidae) (1984)
    Springer
    Hydrobiologia 109 (1984), S. 3-66 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Copepoda ; Mesocyclops ; Africa ; revision ; taxonomy ; zoogeography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A revision is made of the African Mesocyclops species, based on type material (when extant) and on collections from various parts in Africa. Diagnostic characteristics are: presence or absence of spinule patterns on antennular segments, structure of the hyaline membrane of the 17th antennular segment, spine pattern on the basipodite of the antenna, armature of the maxillulary palp, presence or absence of a spine on the basipodite of P1, armature of the connecting lamella, coxopodite and basipodite of P4, armature of the apical spines of Enp3P4, armature of the last thoracic segment, genital segment and the other abdominal segments, armature of the furcal rami and structure of the receptaculum seminis. First, the taxonomical status of M. leuckarti (Claus) is redefined; this species does not occur in Africa and its geographical range is restricted to Europe and the western part of Northern Asia. On the African continent, twelve other taxa are found. Four are described as new to science: M. kieferi sp.n., M. dussarti sp.n., M. spinosus sp.n. and M. aequatorialis similis subsp.n. The remainder are: M. major Sars, M. tenuisaccus (Sars), M. paludosus Lindberg, M. salinus Onabamiro, M. ogunnus Onabamiro, M. aspericornis (Daday), M. rarus Kiefer and M. aequatorialis aequatorialis (Kiefer). Their geographical distribution is discussed. Eleven taxa are restricted to the African continent (including the Arabian Peninsula and the Canary Islands). One taxon is also found in the Oriental Region. Madagascan representatives are briefly mentioned. The importance of breeding and cross-breeding experiments should be stressed in copepod taxonomy. Experiments were performed on African species and M. leuckarti to evaluate the morphological characters used in the present study, and intraspecific morphological variability was examined up to and including the third generation (Van de Velde, in press). In future one should critically reconsider the so-called cosmopolitan species; they may indeed represent a complex of related taxa, each with a geographical range more restricted than that of the species-complex itself.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00006297
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  • 80
    Digitale Medien
    Digitale Medien
    Remarques taxonomiques sur quelques rotiferès des tourbières avec la description d'une espèce et d'une sous-espèce nouvelles (1984)
    Springer
    Hydrobiologia 109 (1984), S. 125-130 
    Details
    ISSN: 1573-5117
    Schlagwort(e): rotifers ; taxonomy ; peat bogs
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Beschreibung / Inhaltsverzeichnis: Résumé Des prévisions d'ordre taxonomique sont apportées sur quelques espèces intéressantes de rotifères des tourbières: Lepadella quadricurvata n. sp. et Lepadella koniari arvernae n. ssp. nouvelles pour la science sont d\'ecrites La pr\'esence de trois rares esp\`eces de Lecane (L. lauterborni, L. sagula et L. kluchor) est signal\'ee et leurs variations sont \'etudi\'ees Le probl\`eme de la synonymie de Trichocerca montana Hauer et de T. intermedia (Stenroos) est discut\'e L'existence de formes interm\'ediaires entre trois esp\`eces de Trichocerca (T. porcellus, T. parvula, T. musculus) est soulign\'ee.
    Notizen: Abstract Taxonomic notes about peat-bog rotifers with a description of one new species and one new subspecies. Variations and problems about some peat-bog rotifers (especially the genera Lecane and Keratella) are discussed. Descriptions of Lepadella quadricurvata nov. sp. and Lepadella koniari arvernae nov. ssp. are added. {xxCes notes résultent d'une étude effectuée en 1980 dans une dizaine de tourbières du Puy-de-Dôme (France Centrale). Au cours de ce travail nous nous sommes heurtés à quelques problèms interéssants de taxonomie qu'il nous paraît utile de soulever, les rotifères des tourbières restant un domaine peu exploré.}
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00011571
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  • 81
    Digitale Medien
    Digitale Medien
    A review of the rotifer fauna of the Sudan (1984)
    Springer
    Hydrobiologia 110 (1984), S. 113-130 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Sudan ; rotifers ; taxonomy ; biogeography ; Africa
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A collection of rotifers contained in samples from the Blue, White and joint Niles in the Sudan, the Red Sea Hills, and Jebel Marra mountains is studied, and the previous literature on the rotifera of Sudan is reviewed. A total of 145 rotifer taxa are now known from this country. Ecological and distributional notes on selected species are added. Besides cosmopolitan, pantropical, and tropical species, a small but significant fraction of the fauna is of northern origin, possibly reflecting climatic conditions of the late-Pleistocene.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00025783
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  • 82
    Digitale Medien
    Digitale Medien
    Cladocera from the Sudan: Red Sea Hills, Jebel Marra and valley of the main Nile (1984)
    Springer
    Hydrobiologia 110 (1984), S. 163-169 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Sudan ; Cladocera ; biogeography ; taxonomy ; Sudan ; Nile
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Twenty species of Cladocera are reported from the Nile, where lacustrine species dominate, and from Jebel Marra and the Red Sea Hills, where chydorids dominate. The community found in the Red Sea Hills is more typically desertic than that of Jebel Marra, which appears closely related to the fauna of the West and Central African Sahel.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00025787
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  • 83
    Digitale Medien
    Digitale Medien
    On the freshwater ostracods (Crustacea, Ostracoda) of the Sudan, with special reference to the Red Sea Hills, including a description of a new species (1984)
    Springer
    Hydrobiologia 110 (1984), S. 137-161 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Sudan ; freshwater ostracods ; Africa ; taxonomy ; zoogeography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A collection of freshwater ostracods from the Sudan is studied and 18 species are recorded. Paracypretta amati sp.n. is new to science. A redescription of the holotype female of Paracypretta aratra (Brady, 1904) (not recorded in this collection) and a provisional key to the species of Paracypretta are given. Heterocypris giesbrechtii (G. W. Müller, 1898) is re-described; Heterocypris sobrinus (Masi, 1932) is placed in the synonymy of H. fretensis; Hemicypris intermedia (Lindroth, 1953) is recorded for the first time since its original description and is redescribed, while Cyprinotus largereticulatus Rome, 1969 is transferred to Hemicypris. The zoogeographical composition of this fauna is briefly discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00025786
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  • 84
    Digitale Medien
    Digitale Medien
    The calanoid copepods of the Nile system (1984)
    Springer
    Hydrobiologia 110 (1984), S. 191-212 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Sudan ; Copepoda ; Calanoida ; taxonomy ; biogeography ; Africa ; Nile
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract At least 11 or 12 calanoid taxa occur in the Nile system. One species is typical of the river and of Lake Chad (Th. galebi); two are restricted to Lake Victoria (Th. galeboides, T. stuhlmanni), but both might be only subspecies to more widespread species. One is restricted to Lakes Edward and George (T. worthingtoni) but is a little known species. No calanoids are on record from Lakes Albert and Kyoga, while the species reported from Lake Turkana (T. banforanus) is out of range, and almost certainly represents an erroneous record. Among the remaining species, four are East-African, ranging from the southern tip of the continent to the Ethiopian plateau and the Nile valley (P. schultzei, Th. mixtus, T. kraepelini, T. cf orientalis), while two are Sahelian species that span Africa from east to west (M. mauretanicus, T. processifer et ssp.). Two new synonyms are introduced. One new subspecies (T. processifier friedae) is described from the Ethiopian plateau. It is suggested that Tropodiaptomus orientalis (Brady, 1886), the type species of its genus, should not be considered a nomen dubium, but should be redescribed on its type female(s) and on topotypical males from Sri Lanka.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00025791
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  • 85
    Digitale Medien
    Digitale Medien
    Caractères taxinomiques et spécificité dans le genreAsplanchna (Rotifère) (1984)
    Springer
    Hydrobiologia 112 (1984), S. 41-44 
    Details
    ISSN: 1573-5117
    Schlagwort(e): rotifers ; Asplanchna ; taxonomy ; specificity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A comparative analysis of eight characters in two clones ofA. brightwelli and a clone ofA. intermedia, fed withParamecium orBrachionus, is made to determine the intraclonal, interclonal and interspecific variations in this complex of species. The trophi morphology appears the most species specific criterium whereas the other features (size of males, diameter and ornamentation of resting eggs, nuclear number in syncytial glands) show variability, either genetic or related to environmental conditions. The variation observed in the ornamentation of resting eggs and in the nuclear number of vitellogen was distributed along a continuous gradient.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00007664
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  • 86
    Digitale Medien
    Digitale Medien
    The Enchytraeid fauna of North Africa (1994)
    Springer
    Hydrobiologia 278 (1994), S. 53-66 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Enchytraeidae ; taxonomy ; distribution ; North Africa
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract As part of a survey of the Mediterranean enchytraeids, large numbers of samples were collected from a wide range of habitats at 38 localities of Tunisia and Algeria in 1989. Twenty species were identified belonging to six genera. Five species are new records for Tunisia and 17 are new for Algeria. Most of the recorded species are widely distributed throughout Europe, or even cosmopolitan, but some have a more restricted range. Fridericia caprensis has a circummediterranean distribution, Fridericia sardorum seems to be endemic to the western Mediterranean and Fridericia berninii is known only from the Balearic Islands and Algeria. Enchytraeus minutus bisetosus n. ssp. is described. A critical revision of some species is also provided.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00142311
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  • 87
    Digitale Medien
    Digitale Medien
    An ultrastructural overview of tubificid spermatozoa (1994)
    Springer
    Hydrobiologia 278 (1994), S. 165-178 
    Details
    ISSN: 1573-5117
    Schlagwort(e): spermatozoa ; Tubificidae ; oligochaete ultrastructure ; taxonomy ; phylogeny
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The spermatozoa of seven species of tubificid oligochaete were compared to those already described in order to supply spermatozoal characters for systematic work on Tubificidae. The spermatozoa of Clitellio arenarius (subfamily Tubificinae) resemble those of the two other known members of the subfamily (Tubifex tubifex and Tubificoides amplivasatus) in being of two different types and in showing the same morphology of acrosomes and nuclei. Among Phallodrilinae, the three gutless species Inanidrilus bulbosus, Inanidrilus leukodermatus and Olavius planus share with Bathydrilus formosus the shape of the nucleus and various characters of the acrosome, whereas Thalassodrilus prostatus is particular in having the acrosome vesicle external to the tube and the longest middle piece recorded in oligochaetes. Monopylephorus limosus and Rhizodrilus russus (Rhyacodrilinae) differ widely in acrosomal and nuclear characters: M. limosus has a twisted nucleus, whereas R. russus has an apically flanged nucleus with a conspicuous apical concavity and an endonuclear canal. The data published on spermatozoa of the Limnodriloidinae are reviewed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00142325
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  • 88
    Digitale Medien
    Digitale Medien
    Morphology of some species of the genus Aulodrilus Bretscher (1994)
    Springer
    Hydrobiologia 278 (1994), S. 7-15 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Oligochaeta ; Tubificidae ; Aulodrilus ; morphology ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The external and internal morphology of Aulodrilus limnobius Bretscher, 1899, Aulodrilus pluriseta (Piguet, 1906) and Aulodrilus japonicus Yamaguchi, 1953, and morphology of the setal apparatus of Aulodrilus pigueti were studied on new material from Russia and compared with various literature data. Besides the peculiar “wings” on bifid setae, dominance of asexual reproduction is regarded as a primary synapomorphy of the genus and is accompanied by an anterior shift of the whole reproductive system and a tendency to doubling the gonads. Naidid-like cocoons, with a single egg, are another element of this reproductive mode. Similar characters seem to have arisen independently in several groups of Oligochaeta.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00142307
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  • 89
    Digitale Medien
    Digitale Medien
    A description of spermatozoan ultrastructure and some anatomical characters in Branchiobdella kozarovi Subchev, 1978 (Annelida: Clitellata), and review of the spermatozoan morphology within the genus (1994)
    Springer
    Hydrobiologia 278 (1994), S. 17-26 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Annelida ; Clitellata ; Branchiobdella kozarovi ; taxonomy ; anatomy ; spermatozoan ultrastructure
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The use of spermatozoan ultrastructural morphology to produce a meaningful phylogeny requires a critical number of descriptions from representative species in a taxon. Branchiobdella spermatozoan morphology is considered to be aberrant within the Clitellata. The description of the spermatozoon of B. kozarovi has extended the information on interspecific variation in this genus. The spermatozoa of this species have an acrosome (16 µm long), nucleus (4.5 µm long), midpiece (1.5 µm long), and tail (158 µm long), with a total length of about 180 µm. The acrosome is a thick helix with about 15 gyres, contains an acrosome tube and acrosome vesicle which has branches penetrating into the central subacrosomal space. The acrosomal “button” is located on the anterior surface, with the “cork” and secondary tube at the posterior. The rod-shaped nucleus has a concavity in both the anterior and posterior surfaces. The midpiece has seven, parallel mitochondria twisted about the central axis. The centriolar remnant with an indistinct ninefold symmetry in cross section is located posterior to the mitochondria. The prominent central sheath extends from the mitochondria to the end of the flagellum, which has no end piece. The axoneme has glycogen granules located along its length, and an helical marginal fiber. A review of descriptions of spermatozoa of Branchiobdella shows some inconsistencies. The observations of two anterior nephridial pores and an eversible penis completes the anatomical characters of B. kozarovi used in current branchiobdellidan taxonomy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00142308
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  • 90
    Digitale Medien
    Digitale Medien
    On four new tropical and subtropical Lecane (Lecanidae, Monogononta, Rotifera) (1994)
    Springer
    Hydrobiologia 287 (1994), S. 243-249 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Rotifera ; new species ; taxonomy ; zoogeography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Four new tropical/subtropical species of Lecane are described. L. abanica n. sp. is recorded from Saudi Arabia and the Comoro Islands; L. minuta n. sp. and L. spiniventris n. sp. from the Sultanate of Brunei, and L. nelsoni n. sp. from Brazil. An attempt is made to include characters of the trophi in the diagnosis of these Lecane.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00006373
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  • 91
    Digitale Medien
    Digitale Medien
    Taxonomic and zoogeographic considerations on Lecanidae (Rotifera: Monogononta) of the Balearic archipelago, with description of a new species, Lecane margalefi n.sp. (1994)
    Springer
    Hydrobiologia 288 (1994), S. 97-105 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Rotifera ; new species ; Balearic archipelago ; taxonomy ; zoogeography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Twenty species of rotifers of the genus Lecane were found in inland fresh and brackish waterbodies of the Balearic archipelago L. margalefi n. sp. has been found in a semi-arid area of Majorca island, and it is probably endemic. It is an illoricate species related to the L. luna group by its foot morphology, but similar in shape and size to L. boorali Koste & Shiel. The taxonomy of some other species of the genus, recorded from the archipelago, is discussed (L. bifurca (Bryce), L. grandis (Murray), L. lamellata (Daday), L. latissima Yamamoto, L. ohioensis (Herrick), L. punctata (Murray), L. pyriformis (Daday)).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00007129
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  • 92
    Digitale Medien
    Digitale Medien
    Keraladiaptomus rangareddyi a new genus and new species of Diaptominae (Copepoda, Calanoida, Diaptomidae) from a temporary pond in Mattam, Kerala State, India (1994)
    Springer
    Hydrobiologia 288 (1994), S. 119-128 
    Details
    ISSN: 1573-5117
    Schlagwort(e): taxonomy ; Keraladiaptomus rangareddyi gen. nov. et sp. nov. ; Copepoda ; Calanoida ; India
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Calanoid copepods, belonging to the new genus and species Keraladiaptomus rangareddyi, were collected from temporary ponds in Kerala State, India. The new genus belongs to the family Diaptomidae, subfamily Diaptominae. It is described in detail and its affinity to the related genera, Arctodiaptomus Kiefer, 1932 and Eodiaptomus Kiefer, 1932, discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00007131
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  • 93
    Digitale Medien
    Digitale Medien
    Importance of the genital operculum in the taxonomy of South American Diaptomidae (Copepoda, Calanoida) (1994)
    Springer
    Hydrobiologia 292-293 (1994), S. 143-147 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Calanoida ; Diaptomidae ; South America ; Venezuela ; taxonomy ; genital operculum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract For the first time, the structures of the female genital field are described and compared among ten species of Venezuelan diaptomids. A nomenclature for these structures is suggested, and there is a preliminary report on the interspecific differences observed in one of these structures, the genital operculum.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00229934
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  • 94
    Digitale Medien
    Digitale Medien
    Lipids of heliobacteria are characterised by a high proportion of monoenoic fatty acids with variable double bond positions (1994)
    Springer
    Photosynthesis research 41 (1994), S. 67-74 
    Details
    ISSN: 1573-5079
    Schlagwort(e): phototrophic bacteria ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The fatty acid composition and lipid pattern of six strains of heliobacteria have been analysed. The results were fairly uniform for all strains. Phosphatidyl ethanolamine and phosphatidyl glycerol were the dominating lipids found, with the former as the major one. No glycolipids were detected. The general fatty acid pattern was dominated by acids of chain length C16 to C18. An unusually large proportion of monoenoic acids was seen, with up to four positional isomers for each chain length. Methyl branched (iso) fatty acids were present, but not cyclopropyl or hydroxy fatty acids nor fatty alcohols.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02184146
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  • 95
    Digitale Medien
    Digitale Medien
    On the classification of C6 (tuberculum sextum) of the mandibular molars (1994)
    Springer
    Human evolution 9 (1994), S. 231-247 
    Details
    ISSN: 1824-310X
    Schlagwort(e): Cusp six ; lower molars ; dental morphology ; taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Cusp six (C6) of the mandibular molars is well-represented in the Hominoid fossil record and occurs with irregular frequency in the various geographic populations of modernHomo as well as in many of the extant non-human primates. The literature reveals considerable controversy and confusion related to C6 anatomic location, definitions and scoring criteria, and a major problem exists in deciding what actually is the “real” or “true” C6, especially relative to variable hypoconulid (C5) expression (i.e., reduction forms and the “divided hypoconulid”). A method is proposed that involves dual 4-point ranking (absent, small, medium, large) and reporting of C5–C6 covariation within a framework of 13 morphological expressivity categories. When applied to 3 different human populations, the method provided a reasonably clear picture of the actual C5 and C6 covariation patterns observed in the mandibular molar dentition. Data obtained from this exercise illustrated that inter- and intrapopulation differences in reported C6 frequencies could be associated with variable scoring criteria as well as with different levels of occlusal attrition and age distribution of the samples.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02437929
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  • 96
    Digitale Medien
    Digitale Medien
    Changes in morphometric parameters of the cerebral microcirculation in experimental hypertension (1984)
    Springer
    Bulletin of experimental biology and medicine 98 (1984), S. 1283-1285 
    Details
    ISSN: 1573-8221
    Schlagwort(e): cerebral microcirculation ; hypertension
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00804324
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