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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 242 (1973), S. 191-193 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two groups of lizards were used: eight species of Anolis from the West Indies and thirteen populations of the side-blotched lizards Ufa stansburiana, sensu latu, from California and Mexico, caught in 1971 and 1972. Geographic variation is not a source of heterogeneity, as all specimens from a ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 25 (1969), S. 314-316 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Die Chromosomensätze von 5 Eidechsenarten der Familie Aguidae, davon vier vom GenusGerrhonotus und eine vom GenusDiploglossus werden beschrieben.D. costatus ist 2n=36 mit 12 grossen metazentrischen Chromosomen und 24 Mikrochromosomen.G. multicarinatus ist 2n=48,G. paucicarinatus 2n=46 undG. coeruleus 2n=38. Diese 3 Arten haben einen identischen «nombre fondamentale» von 48 und alle haben 26 Mikrochromosomen.G. monticolus besitzt 2n=30. Die Anzahl der Mikrochromosomen ist auf 12 reduziert.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 26 (1970), S. 206-207 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wird erstmals über den Karyotyp einer Eidechse der Familie Pygopodidae,Lialis burtonis mit dem GeschlechtschromosomensystemX 1 X 2 Y berichtet. Die diploide Chromosomenzahl des Männchens ist 33 und diejenige des Weibchens 34. Morphologisch scheint der Karyotyp eine Ähnlichkeit mit demjenigen der Geckoniden zu besitzen.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 28 (1972), S. 351-353 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wurde das gehäufte, geographisch begrenzte Auftreten multipler Allele für LDH-H, das bei den bisher untersuchten Organismen nur selten Varianten zeigt, nachgewiesen. Ebenso gelang die Identifizierung von elektrophoretischen Varianten in Abhängigkeit vom pH.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. Rates of water loss and tolerance to desiccation were examined in 11 species of Caribbean Anolis and the Sonoran desert iguanid lizard, Urosaurus ornatus. 2. Rates of water loss ranged from 0.07% body wt/h (A. bonairensis) to 0.43% body wt/h (A. distichus). 3. There were significant correlations between habitat rainfall and both the rates of water loss (P〈0.005) and the maximum time of survival (LTmax) (P〈0.01) for the 11 species of Anolis. Species from areas of low rainfall generally had lower rates of water loss and survived longer than species from areas of high rainfall. 4. There was no correlation between habitat rainfall and the ability to withstand desiccation; therefore differences in LTmax are probably the result of differences in rates of water loss. 5. Rates of water loss did not significantly correlate with either structural niche or ecomorphic category. 6. Since rates of water loss varied to a large degree within closely related species groups, there is apparently little phylogenetic inertia for this physiologic parameter.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Whiptail lizards (Cnemidophoms tigris) were collected from fenced irradiated, fenced control, and unfenced areas near Mercury Nevada. No changes in allele frequencies at 26 allozyme loci could be ascribed to irradiation or fencing. This species is the most polymorphic and heterozygous lizard so far examined. — Heterozygosity estimates derived from electrophoretic studies on 20 additional species of lizards are compared with Cnemidophorus. A general trend seems to emerge. Fossorial lizards have uniformly low levels of heterozygosity (ca. 1 %). Territorial “sit and wait” predators are intermediate (ca. 5%). Highly vagile apparently nonterritorial lizards are the most heterozygous (ca. 10%). Assuming that this trend does not reflect some of sampling error, two current, non-mutually exclusive hypotheses explain the observed situation: (1) the niche width variation hypothesis predicts, higher variability in populations where individuals are exposed to largescale environmental heterogeneity; and (2) the population size hypothesis predicts that, all other things being equal, vagility would tend to increase the effective population size by reducing inbreeding, which would promote higher levels of genetic variation.
    Type of Medium: Electronic Resource
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