Crocodilians
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Histological and immunohistochemical study of the ovaries and oviducts of the juvenile female of Caiman latirostris (Crocodilia: Alligatoridae)
ABSTRACT The purpose of this study was to examine the ovaries and the oviduct of juvenile females of the broad-snouted caiman, Caiman latirostris (Daudin, 1802), using light microscopy, histochemical and immunocytochemical techniques. The ovarian cortex was observed to contain groups of germinative cells and abundant previtellogenic follicles at different st
Zoologia (Curitiba). Publicado em: 2015-10
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2. Contenção farmacológica de jacaré-tinga Caiman crocodilus Linnaeus, 1758 com cetamina S (+) e cetamina racêmica, isolada ou em associação com o midazolam
CHAPTER 2: This work was developed with the purpose of evaluating and comparing two different dosages of ketamine and midazolam in Caiman crocodilus. We used twelve common caiman divided into two groups of six animals. Group 1 received midazolam 2 mg/kg IM and ketamine 20 mg/kg IM, as in group 2, we used the same dosage of midazolam with ketamine at 40 mg/kg
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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3. Genetic characterization of Brazilian crocodilians and development of microsatellite markers for Paleosuchus trigonatus / Caracterização genética de crocodilianos brasileiros e desenvolvimento de marcadores microssatélites para Paleosuchus trigonatus
A constante perda da diversidade biológica frente às pressões antrópicas tem concentrado atenções sobre a necessidade de se conhecer a diversidade genética das espécies que ainda restam como um primeiro passo para o desenvolvimento de estratégias de manejo. Técnicas de genética molecular fornecem uma estimativa do número de formas distintas numa
Publicado em: 2009
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4. Ecologia e modelagem da distribuição dos sítios de nidificação do jacaré-açu (Melanosuchus niger) em uma área de várzea da Amazônia Central, Brasil
The black caiman, Melanosuchus niger, is primarily an Amazonian species, its largest populations are associated mainly with interior várzea areas, but its nesting ecology related with these hydrologic dynamic environments is still poorly understood. The objectives of this study were related to the generation of information on the nesting ecology of this spe
Publicado em: 2009
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5. Dieta e avaliação da contaminação mercurial no jacaré-depapo- amarelo, Caiman latirostris, Daudin 1802, (Crocoddylia, Alligatoridae) em dois parques naturais no município do Rio de Janeiro, Brasil
O sistema lacustre da Zona Oeste do município do Rio de Janeiro, que compreende como Unidades de Conservação os Parques Naturais Municipais Chico Mendes (PNMCM) e Marapendi (PNMM), apresenta ocorrência do jacaré-de-papo-amarelo, Caiman latirostris. As áreas estudadas são um dos últimos refúgios onde ainda encontram-se populações remanescentes de C
Publicado em: 2008
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6. Cross-species microsatellite amplification in South American Caimans (Caiman spp and Paleosuchus palpebrosus)
Microsatellite DNA markers have been used to assess genetic diversity and to study ecological behavioral characteristics in animals. Although these markers are powerful tools, their development is labor intensive and costly. Thus, before new markers are developed it is important to prospect the use of markers from related species. In the present study we inv
Genetics and Molecular Biology. Publicado em: 2006
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7. Betrequia ocellata Oldroyd (Diptera, Tabanidae, Rhinomyzini) blood feeding on Caiman crocodilus (Linnaeus) (Crocodylia, Alligatoridae) in Manaus, Brazil
In Central Amazonia the tabanid Betrequia ocellala Oldroyd, 1970 was recorded for the first time blood feeding on caimans during an experiment in September/October 1996 at Ducke Reserve, Manaus, Brazil. Among different available hosts (Caiman, horse, duck and human) B. ocellata was observed only on Caiman crocodilus (Linnaeus, 1758), suggesting specific bloo
Revista Brasileira de Zoologia. Publicado em: 2000-09
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8. Generic affinities among crocodilians as revealed by DNA fingerprinting with a Bkm-derived probe.
Genetic fingerprint profiles have been successfully used for establishing biological relationships, in linkage analysis, and in studies of population structure but have not so far been used for ascertaining phylogenetic relationships among related groups of species and genera. This is largely because these profiles are thought to evolve too rapidly to be inf
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9. Hearing in the Crocodilia
Measurements of auditory sensitivity in terms of the cochlear potentials were made in young specimens of three species of crocodilians, Caiman crocodilus and Alligator mississipiensis of the subfamily Alligatorinae and Crocodylus acutus of the subfamily Crocodylinae. These species show considerable similarity in their capabilities for sound reception. All ha
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10. Molecular evidence for the origin of birds.
The major groups of amniote vertebrates appeared during a relatively short time span at the end of the Paleozoic Era, a fact that has caused difficulty in estimating their relationships. The fossil record suggests that crocodilians are the closest living relatives of birds. However, morphological characters and molecular sequence data from living amniotes ha
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11. Atmospheric oxygen level affects growth trajectory, cardiopulmonary allometry and metabolic rate in the American alligator (Alligator mississippiensis)
Recent palaeoatmospheric models suggest large-scale fluctuations in ambient oxygen level over the past 550 million years. To better understand how global hypoxia and hyperoxia might have affected the growth and physiology of contemporary vertebrates, we incubated eggs and raised hatchlings of the American alligator. Crocodilians are one of few vertebrate
Company of Biologists.
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12. Beta-keratins of turtle shell are glycine-proline-tyrosine rich proteins similar to those of crocodilians and birds
This study presents, for the first time, sequences of five beta-keratin cDNAs from turtle epidermis obtained by means of 5′- and 3′-rapid amplification of cDNA ends (RACE) analyses. The deduced amino acid sequences correspond to distinct glycine-proline-serine-tyrosine rich proteins containing 122–174 amino acids. In situ hybridization shows that beta-
Blackwell Science Inc.