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Showing 1 to 12 of 12 for “"Reptilia"”.
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Evolution of Axial Skeleton Diversity across Reptilia
… appendages of the vertebrate body are suspended. Reptilia is a hugely diverse clade of vertebrates, with regards to body form, body size, function, and behaviour. However, despite this established diversity, we know little about the diversity of the axial skeleton across Reptilia, or how axial …
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Geographic variation and natural selection in Eumeces obsoletus (Reptilia: Sauria: Scincidae)
Thesis (M.A.)--University of Kansas, Department of Systematics and Ecology, 1975.
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Behavioral comparison of anoline competitors: Anolis cooki and Anolis cristatellus (Reptilia: Sauria: Iguanidae)
The behavioral repertoire of the Puerto Rican anoles, Anolis cooki, A. cristatellus and A. monensis was studied in the laboratory. The display of A. cooki and A. monensis revealed great similarities; consisting of one head bob pattern highly stereotyped in its temporal sequencing and total …
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A functional morphological study of limb regression in some Southern African species of Scincidae (Reptilia : Sauria)
How and why did limblessness evolve in certain skinks? These questions are explored in certain species of the Scincidae (from southern Africa) that vary in the degree of limb reduction. This regression series consists of Mabuya capensis (with normal, pentadactyle limbs), Riopa sundevallii (with …
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Distribuição e análise morfológica do gênero Leposternon Wagler, 1824 no Estado do Rio de Janeiro, Brasil (Reptilia, Amphisbaenia)
The data about occurrence and distribution of Leposternon species already recorded to Rio de Janeiro State, Brazil, were reviewed and extended. Leposternon infraorbitale and L. wuchereri stand with only one record each, and L. microcephalum, present in most of the state range, was not recorded to …
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Biologia reprodutiva e desenvolvimento dos filhotes de cágado amarelo Acanthochelys radiolata (Mikan, 1820) em cativeiro (Reptilia: Testudines: Chelidae)
To determine the mating period, posture, egg incubation and hatchling of the young of Acanthochelys radiolata, six males and ten females from several regions of the State of Rio de Janeiro were observed in a stand at the Fundação Jardim Zoológico da Cidade do Rio de Janeiro (RIOZOO). Daily …
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Historical Land Fragmentation and its Effects on Genetic Diversity and Parasitism of Island Populations of Podarcis erhardii (Lacertidae, Reptilia)
… wall lizard Podarcis erhardii (Lacertidae, Reptilia), which because of its wide distribution, and poor dispersal abilities is a sensitive indicator of fragmentation history. I predict that genetic diversity will be positively correlated with island area and negatively correlated with age. I …
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Morfologia e ultra-estrutura do oviduto de Hemidactylus mabouia (Moreau de Jonnès, 1818) (Reptilia, Squamata, Sauria, Gekkonidae) durante o ciclo reprodutivo
Em geral, o aparelho reprodutor feminino dos répteis é constituído por um par de ovários e pelos ovidutos que funcionam como um conduto para o ovo desde a ovulação até a oviposição. As lagartixas pertencem ao gênero Hemidactylus, o qual está inserido na família Gekkonidae e na ordem Squamata. A …
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Estudo histoquímico e ultra-estrutural das fibras do sistema colágeno na glândula de veneno de Bothrops jararaca (Wied, 1824) (Reptilia, Squamata)
It was studied through optical and eletronic transmission microscopy fragments of the main portion of the venom gland from Bothrops jararaca obtained at 6hs, 4, 8 and 45 days after manual extraction of the venom. The objective of this thesis was to identify some extracellular matrix components of …
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Seasonal regulation of the circadian rhythms of behavioural temperature selection and locomotor activity in Australian sleepy lizards (Tiliqua rugosa, gray; reptilia: scincidae)
This research project examined the role of environmental time cues and circadian rhythms in mediating seasonal adjustments in the body temperature and locomotoractivity patterns in the Australian sleepy lizard, Tiliqua rugosa (Gray 1827). The first component of this study investigated whether daily …
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Evolution of the structure and function of vertebrate brain gonadotropin-releasing hormone
… vertebrate species, in the classes Aves, Reptilia and Pisces was investigated. Acetic acid extracts were subjected to gel filtration chromatography and semipreparative high performance liquid chromatography (HPLC) to partially purify the GnRHs. The GnRH immunoreactivity was then …