Results 151 to 160 of about 26,555 (186)
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2022
This chapter focuses on crocodilians, including alligators and caimans. The Spectacled Caiman is a medium-sized alligatorid species. Although very wary by nature, it can nonetheless be a dangerous animal under the wrong circumstances. Populations of the Spectacled Caiman in the United States were derived from the pet trade.
Walter E. Meshaka +3 more
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This chapter focuses on crocodilians, including alligators and caimans. The Spectacled Caiman is a medium-sized alligatorid species. Although very wary by nature, it can nonetheless be a dangerous animal under the wrong circumstances. Populations of the Spectacled Caiman in the United States were derived from the pet trade.
Walter E. Meshaka +3 more
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2009
Abstract Crocodylia includes the alligators, caimans, crocodiles, and gharials found throughout the world’s tropics (Fig. 1). Twenty-three living species are currently recognized (1), though some probably represent cryptic species complexes (2–4).
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Abstract Crocodylia includes the alligators, caimans, crocodiles, and gharials found throughout the world’s tropics (Fig. 1). Twenty-three living species are currently recognized (1), though some probably represent cryptic species complexes (2–4).
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Morphology of the ovary of Caiman crocodilus (Crocodylia: Alligatoridae)
Annals of Anatomy - Anatomischer Anzeiger, 2004We describe the ovarian histology and characterize the folliculogenesis of adult females of Caiman crocodilus in order to compare them with other species of Reptilia. The gonad has a thin irregular cortex and a well-developed reticular stroma, composed of vascularized chordae, drained by large lymphatic vessels and separated by extensive lacunae ...
Martha L, Calderón +2 more
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The Higher Level Relationships of the Extant Crocodylia [PDF]
Journal of Herpetology, 1989 -The relationships of the three living groups of crocodilians (crocodylids, alligatorids and gavialids) are poorly understood. Recent molecular results favor a sister group relationship between the crocodylid genus Tomistoma and Gavialis, with this as the sister group to the crocodylids (Densmore, 1983).
Chamero Macho, Beatriz +3 more
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Unprovoked Mouth Gaping Behavior in Extant Crocodylia
Journal of Herpetology, 2020Unprovoked mouth gaping behavior is ubiquitous throughout 24 extant members of Crocodylia, yet information on gaping is limited. Proposed hypotheses for gaping include thermoregulation and the evaluation of potential environmental conditions. To determine temperature effects, we tracked head surface (Tsh), body surface (Tsb), and ambient (Ta ...
Noah J. Carl +2 more
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Molecular Phylogenetics of the New-World Crocodylia
2020During the late twentieth and early twenty-first centuries, there has been a revolution in evolutionary biology. Traditional methods that had been applied to understanding relationships and natural history for hundreds of years have been supplemented (and sometimes replaced) by biochemical and molecular techniques that now allow us to examine the ...
Llewellyn D. Densmore III, Tomas Hrbek
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Studies on the molecular evolution of the crocodylia: footprints in the sands of time
Journal of Experimental Zoology, 2002AbstractA reasonably large number of studies focusing on the molecular evolution of crocodilians have been completed during the past 100 years. Proteins were initially studied before DNA was known to carry the genetic information of cells and organisms, and were subsequently studied to infer changes at the DNA level.
Herbert C, Dessauer +2 more
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Long-Distance Signaling in Crocodylia
Copeia, 2013Long-distance signals such as bellows, roars, headslaps, and infrasound pulses are important components of crocodilian behavioral repertoire, yet there is little or no published information on signaling for many species. Here, original data augmented with a compilation of published and unpublished sources are presented for 24 species of crocodilians ...
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Heterogeneity and polymerization of hemoglobins of Caiman latirostris (Crocodylia: Reptilia)
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1976Abstract 1. 1. The hemoglobins of Caiman latirostris were examined by starch gel electrophoresis and molecular sieving. 2. 2. Three major and one minor components were resolved by electrophoresis at pH 8.1 of freshly prepared and alkylated samples. 3. 3.
E, Reischl, C O, da Diefenbach
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New Terpene Hydrocarbons from the Alligatoridae (Crocodylia, Reptilia)
Journal of Natural Products, 2002The contents of the paracloacal gland secretions of the alligatorids Alligator mississippiensis, A. sinensis, Paleosuchus palpebrosus, and P. trigonatus were investigated. Novel acyclic hydrocarbon terpenes with a rare trisubstituted 2,4-diene system were identified in the secretions of A. sinensis, P. palpebrosus, and P. trigonatus.
Stefan, Schulz +2 more
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