ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Thin-layer and paper chromatography (1982)
    s.l. : American Chemical Society
    Analytical chemistry 54 (1982), S. 45-57 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00242a032
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Thin-layer and paper chromatography (1984)
    s.l. : American Chemical Society
    Analytical chemistry 56 (1984), S. 48-63 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00269a004
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Chemical communication in hermaphroditic digenetic trematodes (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 1659-1677 
    Details
    ISSN: 1573-1561
    Keywords: Platyhelminths ; Trematoda ; hermaphroditic digeneans ; intra-specific pairing ; interspecific pairing ; behavior ; chemical communication ; pheromones ; lipids ; sterols
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Adult hermaphroditic digenetic trematodes show a tendency to pair or aggregate in vivo, on the chick chorioallantois, and in vitro. Intraspecific pairing studies onEchinostoma revolutum, Leucochloridiomorpha constantiae, andAmblosoma suwaense are reviewed. Lipophilic excretory-secretory products are involved in chemical communication in hermaphroditic digeneans. Free sterols are involved in chemical attraction inL. constantiae andE. revolutum and sterol esters play a similar role inA. suwaense. In vitro pairing betweenE. revolutum and various other digenean species suggest that interspecific pairing occurs in Digenea and that nonspecific factors are involved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01022372
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Densitometric thin-layer chromatographic analyses of cholesterol inSchistosoma mansoni (Trematoda) adults and their excretory-secretory products (1983)
    Springer
    Journal of chemical ecology 9 (1983), S. 1483-1489 
    Details
    ISSN: 1573-1561
    Keywords: Schistosoma mansoni ; Platyhelminthes ; Trematoda ; blood flukes ; thin-layer chromatography ; densitometry ; lipids ; cholesterol ; excretory-secretory products ; in vitro maintenance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Densitometric thin-layer Chromatographic analysis was used to quantitate cholesterol in 6-week-old male, female, and worm-pairs ofSchistosoma mansoni, and their excretory-secretory (E-S) products. Males extracted immediately after removal from mice had 1.2–1.5 μg cholesterol/worm, whereas those incubated for 0.5 hr in Earle's balanced solution at 37 ° C contained 0.8–1.5 μg cholesterol/ worm. Females extracted immediately after removal from hosts contained 130 ng cholesterol/worm. Females accumulated considerable cholesterol during incubation and had 420 ng cholesterol/ worm at 0.5 hr. Worm-pairs extracted at 0 hr had 1.9–2.8 μg cholesterol/pair and 1.2–1.5 μg cholesterol/ pair when extracted at 0.5 hr postincubation. Following incubation for 0.5 hr, males released 12–28 ng cholesterol/ worm (average 21), females released 8–13 ng cholesterol/ worm (average 11), and worm-pairs released 3–13 ng cholesterol/worm-pair (average 8).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988514
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Redescription of Echinostoma trivolvis (Cort, 1914) (Trematoda: Echinostomatidae) with a discussion on its identity (1995)
    Springer
    Systematic parasitology 32 (1995), S. 61-70 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The life-cycle of Echinostoma trivolvis (Cort, 1914) has been completed experimentally and the validity and identity of this species are discussed. Synonyms for cercariae and adults of E. trivolvis are as follows: Cercaria trivolvis Cort, 1914, C. trisolenata Faust, 1917, C. acanthostoma Faust, 1918, C. complexa Faust, 1919; Distoma echinatum Zeder, 1803, of Leidy (1888, 1904) and Hassall (1896); E. echinatum (Zeder, 1803) of Hassall (1896), Stiles & Hassall (1895), Barker & Laughlin (1911), Barker (1916) and Swales (1933); E. revolutum (Frölich, 1802) Dietz, 1909 of Johnson (1920), Fallis (1934), Beaver (1937) and Fried & co-workers (1968–1989); E. armigerum Barker & Irvine, 1915; E. coalitum Barker & Beaver, 1915; E. callawayensis Barker & Noll, 1915; E. paraulum Dietz, 1909 of Miller (1937); E. multispinosum Vigueras, 1944; and Echinoparyphium contiguum Barker & Bastron, 1915. The first intermediate host is the planorbid snail Helisoma trivolvis. Second intermediate hosts are various pulmonate and prosobranch snails, mussels, planarians, fishes, frogs, tadpoles and freshwater turtles. Final hosts are various birds and mammals. E. trivolvis occurs only in North America.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00009468
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Association of particular systems with the release of neutral lipids inEchinostoma revolutum (Trematoda) adults (1984)
    Springer
    Journal of chemical ecology 10 (1984), S. 1065-1069 
    Details
    ISSN: 1573-1561
    Keywords: Trematoda ; Echinostoma revolutum ; neutral lipids ; thinlayer chromatography ; histochemistry ; excretory system ; alimentary system ; reproductive system ; tegument ; pheromonal communication
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Since free sterol excretory-secretory (E-S) products are involved in pheromonal communication in adultEchinostoma revolutum (Trematoda), attempts were made to associate specific systems with the release of lipids from this organism. A micropipet design was used to isolate neutral lipids from the excretory system versus those obtained from both the alimentary and the reproductive systems. Tegumentary lipids were obtained by rubbing the surface of worms with gauze. As determined by thin-layer chromatography, the major neutral lipid obtained from all systems was free sterol. Additional minor neutral lipid fractions were obtained from the excretory, alimentary, and reproductive systems. Histochemical oil red O studies showed neutral lipids only in the excretory system. Neutral lipids released from all of the above-mentioned systems may play a role in pheromonal communication in this species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987513
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Intra- and interspecific chemoattraction studies onSchistosoma mansoni, S. japonicum, andS. haematobium in the absence of barriers (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1293-1298 
    Details
    ISSN: 1573-1561
    Keywords: Trematode ; digenetic ; Schistosoma mansoni ; Schistosoma japonicum ; Schistosoma haematobium ; chemoattraction ; sexual attraction ; interspecific ; fluke ; blood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Heterosexual intra- and interspecific chemoattraction studies were done in polycarbonate chambers without barriers using 8- to 10-week-oldSchistosoma mansoni from mice, 10-week-oldSchistosoma japonicum from hamsters, and 14-week-oldSchistosoma haematobium from hamsters. Experiments were done for up to 4 hr at 37 °C in a humidified incubator. Single worms were not attracted to decoys or heat-killed worms. Heterosexual intraspecific and interspecific attraction was significant at all time points with all combinations. No clear differences were apparent between intra- and interspecific attraction. Differences between same and differentS. japonicum orS. haematobium pairs were not significant at any time point.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020555
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Intraspecific and interspecific chemoattraction inBiomphalaria glabrata andHelisoma trivolvis (Gastropoda: Planorbidae) (1994)
    Springer
    Journal of chemical ecology 20 (1994), S. 2645-2651 
    Details
    ISSN: 1573-1561
    Keywords: Intraspecific chemoattraction ; interspecific chemoattraction ; Biomphalaria glabrata ; Helisoma trivolvis ; Gastropoda ; Planorbidae ; in vitro bioassay ; chemorepulsion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A Petri dish bioassay previously used to examine food preferences in planorbid snails was used to study intraspecific and interspecific chemoattraction inBiomphalaria glabrata (albino strain, M-line) andHelisoma trivolvis (Colorado strain) snails.B. glabrata snails showed significant intraspecific chemoattraction in the absence of visual cues and snail thigmotaxis.H. trivolvis snails also showed significant intraspecific chemoattraction. Interspecific chemoattraction between these species occurred in the bioassay, suggesting that the chemoattractants were not species specific. Artificial spring water conditioned by aqueous excretory-secretory products (snail-conditioned water) ofB. glabrata elicited significant intraspecific chemoattraction. However, lipophilic excretory-secretory products ofB. glabrata elicited significant chemorepulsion. Repellant factors in the lipophilic fraction were not characterized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02036198
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Neutral lipids in snail-conditioned water fromBiomphalaria glabrata (Gastropoda: Planorbidae) (1996)
    Springer
    Journal of chemical ecology 22 (1996), S. 231-235 
    Details
    ISSN: 1573-1561
    Keywords: Snail-conditioned water (SCW) ; neutral lipids ; free fatty acids ; Biomphalaria glabrata ; TLC ; densitometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Thin-layer chromatography was used to study neutral lipids in snail-conditioned water (SCW) fromBiomphalaria glabrata snails. A major lipid fraction in SCW at 2 and 4 hr after snail incubation contained free fatty acids. Fatty acids released per snail per milliliter of water when 10 snails were incubated in 5 ml of deionized water for 4 or 2 hr was 2.4±0.4 µg/ml and 0.9±0.1 µg/ml (mean ± SE), respectively. The amount released at 4 hr was significantly greater than at 2 hr. Snails also released free sterols, a sterol ester-hydrocarbon fraction, methyl esters, and other unidentified lipid fractions into the water. The potential of these neutral lipids to serve as chemoattractants for larval trematodes or snails remains to be determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02055095
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    High-Performance Thin-Layer Chromatographic Analysis of Sugars in Snail-Conditioned Water and Mucus from Biomphalaria glabrata, Helisoma trivolvis, and Lymnaea elodes (1999)
    Springer
    Journal of chemical ecology 25 (1999), S. 727-733 
    Details
    ISSN: 1573-1561
    Keywords: High-performance thin-layer chromatography ; Biomphalaria glabrata ; Helisoma trivolvis ; Lymnaea elodes ; sugars ; glucose ; maltose ; snail conditioned water ; mucus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The presence of sugars, particularly glucose, maltose, and sucrose, in the SCW of Biomphalaria glabrata, the two strains of Helisoma trivolvis, and Lymnaea elodes was variable, although only maltose was quantifiable in two samples of snail conditioned waters from B. glabrata. The only sugar detected in mucus was glucose, but it was below the lowest quantifiable amount in the mucus samples of B. glabrata and H. trivolvis. The mean percentage of glucose in the mucus of L. elodes was 0.0040% ± 0.00067%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020880330696
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...