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  • Evolution
  • Springer  (11)
  • American Society of Hematology
  • Annual Reviews
  • Copernicus
  • Institute of Physics
  • PANGAEA
  • 2005-2009
  • 1990-1994
  • 1980-1984  (11)
  • 1960-1964
  • 1983  (11)
Collection
Keywords
Publisher
  • Springer  (11)
  • American Society of Hematology
  • Annual Reviews
  • Copernicus
  • Institute of Physics
    • +
Years
  • 2005-2009
  • 1990-1994
  • 1980-1984  (11)
  • 1960-1964
Year
  • 1
    Electronic Resource
    Electronic Resource
    Evolution ofDrosophila repetitive-dispersed DNA (1983)
    Springer
    Journal of molecular evolution 19 (1983), S. 203-213 
    Details
    ISSN: 1432-1432
    Keywords: Evolution ; Phylogenetic distribution ; Repetitive-dispersed DNAs ; Speciation ; Transposons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have examined the phylogenetic distribution of a spectrum ofDrosophila repetitive-dispersed DNAs ranging from structurally complex transposable elements to scrambled middle repetitive sequences. Our data suggest that unlike typical “genes” these DNAs are unstable components of the drosophilid genome. The unusual behavior of these repetitive-dispersed DNAs raises the possibility that this type of sequence may have an important role in the evolution of the family Drosophilidae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02099967
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  • 2
    Electronic Resource
    Electronic Resource
    The evolutionary pattern of aromatic amino acid biosynthesis and the emerging phylogeny of pseudomonad bacteria (1983)
    Springer
    Journal of molecular evolution 19 (1983), S. 272-282 
    Details
    ISSN: 1432-1432
    Keywords: Microbial phylogeny ; Evolution ; Aromatic biosynthesis ; Regulatory enzymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Pseudomonad bacterial are a phylogenetically diverse assemblage of species named within contemporary genera that includePseudomonas, Xanthomonas andAlcaligenes. Thus far, five distinct rRNA homology groups (Groups I through V) have been established by oligonucleotide cataloging and by rRNA/DNA hybridization. A pattern of enzymic features of aromatic amino acid biosynthesis (enzymological patterning) is conserved at the level of rRNA homology, five distinct and unambiguous patterns therefore existing in correspondence with the rRNA homology groups. We sorted 87 pseudomonad strains into Groups (and Subgroups) by aromatic pathway patterning. The reliability of this methodology was tested in a blind study using coded cultures of diverse pseudomonad organisms provided by American Type Culture Collection. Fourteen of 14 correct assignments were made at the Group level (the level of rRNA homology), and 12 of 14 correct assignments were made at the finer-tuned Subgroup levels. Many strains of unknown rRNA-homology affiliation had been placed into tentative rRNA groupings based upon enzymological patterning. Positive confirmation of such strains as members of the predicted rRNA homology groups was demonstrated by DNA/rRNA hybridization in nearly every case. It seems clear that the combination of these molecular approaches will make it feasible to deduce the evolution of biochemical-pathway construction and regulation in parallel with the emerging phylogenies of microbes housing these pathways.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02099974
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  • 3
    Electronic Resource
    Electronic Resource
    Order and orientation of genic sequences in circular mitochondrial DNA fromSaccharomyces exiguus: Implications for evolution of yeast mtDNAs (1983)
    Springer
    Journal of molecular evolution 19 (1983), S. 333-341 
    Details
    ISSN: 1432-1432
    Keywords: mtDNA ; Gene mapping ; Evolution ; Yeasts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Mapping of sequences specifying the large and small ribosomal RNAs and six polypeptides in the circular 23.7 kbp mitochondrial DNA ofSaccharomyces exiguus has shown that these genes have the same orientation and that a 5 gene cluster is common to this DNA and the 18.9 kbp mtDNA fromTorulopsis glabrata. Included in the preserved region are juxtaposed sequences specifying ATPase subunits 6 and 9 which have the same order and orientation as analogous genes in theEscherichia coli unc operon. The above data, together with knowledge that these two sequences are dispersed in larger yeast mtDNAs, leads us to suggest that larger forms are derived from a smaller ancestral molecule that would have had some resemblance to the mtDNAs ofS. exiguus andT. glabrata.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02101636
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  • 4
    Electronic Resource
    Electronic Resource
    Analysis of a five gene cluster and unique orientation of large genic sequences inTorulopsis glabrata mitochondrial DNA (1983)
    Springer
    Journal of molecular evolution 19 (1983), S. 342-345 
    Details
    ISSN: 1432-1432
    Keywords: mtDNA ; Gene mapping ; Evolution ; Yeasts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Analysis of gene order and orientation in the circular 18.9 kbp mitochondrial DNA molecule ofTorulopsis glabrata has shown that the eight large genic sequences have the same orientation and that a five gene cluster which runs — cytochrome b, cytochrome oxidase subunit 1, ATPase subunits 6 and 9 and cytochrome oxidase subunit 2 — is common to this DNA andSaccharomyces exiguus mtDNA (see accompanying paper).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02101637
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  • 5
    Electronic Resource
    Electronic Resource
    tRNA-rRNA sequence homologies: Evidence for a common evolutionary origin? (1983)
    Springer
    Journal of molecular evolution 19 (1983), S. 420-428 
    Details
    ISSN: 1432-1432
    Keywords: Yeast ; E. coli ; tRNA ; rRNA ; Sequence homologies ; Evolution ; Origins ; Coding mechanism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Many tRNAs ofE. coli and yeast contain stretches whose base sequences are similar to those found in their respective rRNAs. The matches are too frequent and extensive to be attributed to coincidence. They are distributed without discernible pattern along and among the RNAs and between the two species. They occur in loops as well as in stems, among both conserved and non-conserved regions. Their distributions suggest that they reflect common ancestral origins rather than common functions, and that they represent true homologies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02102317
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  • 6
    Electronic Resource
    Electronic Resource
    Cell lineage restrictions in the genital disc ofDrosophila revealed byMinute gynandromorphs (1983)
    Springer
    Development genes and evolution 192 (1983), S. 337-346 
    Details
    ISSN: 1432-041X
    Keywords: Drosophila ; Gynandromorphs ; Genital disc ; Compartments ; Evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The genital imaginal disc ofDrosophila differentiates the terminalia, i.e. the genitalia and analia, of both sexes. It represents a composite anlage, containing a female genital primordium, a male genital primordium and an anal primordium. In normal males and females, only one of the two genital primordia differentiates; the other is developmentally repressed. Therefore, cell-lineage relationships between the male and female genital primordia can only be studied in sexual mosaics which differentiate female and male cells. We producedMinute (M)‖non-Minute(M+) gynandromorphs and selected those with sexually mosaic terminalia for a cell-lineage analysis. In these mosaics, either the male (XO) or female (XX) cells wereM + and thus had a growth advantage. The differential growth rates served as a tool to detect clonal restrictions. In control gynandromorphs (M +‖M +), the amount of female genitalia differentiated was largely independent of the amount of male genitalia present. In contrast, male and female anal structures, as a rule, added up to one full set. The same was true for the experimentalM‖M + gynandromorphs, but the contribution ofXX andXO cells to mosaic terminalia changed drastically due toM + cells competing successfully against the more slowly growingM cells. Specific subsamples ofM‖M + gynandromorphs showed thatM cells in a non-mosaic primordium are shielded from cell competition taking place in the neighbouring mosaic primordium. We conclude that the three primordia of the genital disc represent developmental compartments. In the genital primordia, even developmentally repressedM + cells compete successfully against developmentally activeM cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00848814
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  • 7
    Electronic Resource
    Electronic Resource
    A model of evolutionary appearance of dissipative structure in ecosystems (1983)
    Springer
    Journal of mathematical biology 18 (1983), S. 13-23 
    Details
    ISSN: 1432-1416
    Keywords: Ecosystem ; Evolution ; Autonomous oscillations ; issipative structure ; Bifurcation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract The interrelation between autonomous oscillations in local systems and stable dissipative structures in spatially distributed systems is analyzed. Darwinian evolution in populations comprising the ecosystem is shown to be able to cause the qualitative rearrangements of dynamic modes and smooth appearance of oscillations in local systems. The same evolutionary mechanisms analyzed within bilocal systems, may lead to appearance of dissipative structures (both smooth and sharp).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275907
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  • 8
    Electronic Resource
    Electronic Resource
    Scale-eating in characoids and other fishes (1983)
    Springer
    Environmental biology of fishes 9 (1983), S. 87-101 
    Details
    ISSN: 1573-5133
    Keywords: Feeding habits ; Lepidophagy ; Evolution ; Behavior ; Predation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Scale-eating is known for several unrelated fish groups, but few data are available on the habits of most species. General habits and feeding behavior of some lepidophagous characoids are presented and compared to other scale-eating species. The diversity of morphology, habits, and behavior of scale-eating fishes is great, and few patterns are shared by the specialized scale-eaters. Except for modified teeth, no morphological characteristic permits identifying a fish as a specialized lepidophage. Hunting tactics consist mainly of ambush, stalking, or disguise (aggressive mimicry). Scale-removal may be accomplished by a jarring strike with the snout, generally directed at the prey's flank, or by biting or rasping. The mode of scale-removal seems to reflect primarily the disposition of the jaws and the teeth. Scales are swallowed directly if taken in the mouth; if not, they are gathered as they sink, or picked up from the bottom. Scale-eating is probably a size-limited habit. Specialized scale-eaters rarely exceed 200 mm, most ranging near 120 mm. Some species eat scales only when young; most take other food items in addition to scales. Scale-eating habits probably arose from trophic or social behaviors. These are not mutually exclusive and, indeed, may have acted together during the evolution of lepidophagy. Suggested trophic origins include scraping epilithic algae, modified piscivory, and necrophagy. Social origins include intra- and interspecific aggressive behavior during feeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00690855
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  • 9
    Electronic Resource
    Electronic Resource
    Growth parameters for typical anadromous and dwarf stocks of alewives,Alosa pseudoharengus (Pisces, Clupeidae) (1983)
    Springer
    Environmental biology of fishes 9 (1983), S. 277-287 
    Details
    ISSN: 1573-5133
    Keywords: Freshwater adaptation ; Heavy metals ; Heterochrony ; Landlocked ; Larval period ; Migration ; Ontogeny ; Evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Growth parameters for anadromous alewives,Alosa pseudoharengus (Clupeidae) from two Gulf of Maine watersheds are described. Fish from Damariscotta Lake are typical of other coastal anadromous stocks whereas fish from Walker Pond are dwarfs. The dwarf stock has a life history pattern intermediate between that of fully landlocked and typical anadromous stocks. The dwarfs are anadromous but their young remain in freshwater approximately 16 months, compared to the 2 to 4 months typical of anadromous stocks. This prolonged period of freshwater residence includes a greatly extended larval period and a reduced growth rate. The data suggest that the principal adaptive interval in alewife life history occurs during early ontogeny and that variations in larval development may be the basis for the evolution of fully landlocked stocks from anadromous ancestors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692376
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  • 10
    Electronic Resource
    Electronic Resource
    Fine structure of the sensory receptors of Aglantha digitale (Hydromedusae: Trachylina) (1983)
    Springer
    Cell & tissue research 231 (1983), S. 415-425 
    Details
    ISSN: 1432-0878
    Keywords: Statocysts ; Ciliated comb pads ; Microvilli ; Evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Fine-structure studies of the sensory receptors of Aglantha digitale have been done by transmission- and scanning-electron microscopy. Aglantha has 8 club-shaped statocysts and three types of ciliated sensory receptors: ciliated comb pads, ciliated sensory cells with microvilli, and ciliated sensory cells without microvilli. The epithelium covering the statocyst has both ciliated sensory cells and epitheliomuscular cells. The ciliated comb pads are formed by a group of ciliated sensory cells, each having an apical kinocilium surrounded by a ring of microvilli. These microvilli show an increase in length towards the velum. The axons from the comb pad cells enter the inner nerve ring. The structure, function and the evolution of the statocysts and the possible role of the ciliated comb pads and other sensory receptors are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222191
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  • 11
    Electronic Resource
    Electronic Resource
    Regulatory peptides in the gastrointestinal tract of Alligator mississipiensis (1983)
    Springer
    Cell & tissue research 231 (1983), S. 439-449 
    Details
    ISSN: 1432-0878
    Keywords: Evolution ; Regulatory peptides ; Gut ; Endocrine cells ; Peripheral innervation ; Alligator mississipiensis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The gastrointestinal tract of the alligator Alligator mississipiensis has been investigated for the presence of immunoreactivity to fourteen regulatory peptides all known to occur in the mammalian gut system. Mucosal endocrine cells reacting specifically with the antisera to neurotensin, C-terminal gastrin, somatostatin, bombesin, secretin, pancreatic glucagon and enteroglucagon were detectable, the distribution of these cells being, in general, similar to the mammalian pattern. Peripheral nerve cell bodies and nerve fibres were detected with the antisera to vasoactive intestinal polypeptide, substance P, bombesin and somatostatin again with a distribution similar to that seen in mammals. No immunoreactivity was observed with the available antisera to glicentin, motilin, gastric inhibitory polypeptide, gastrin 34, cholecystokinin 9–20 and met-enkephalin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222193
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