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Reptile diversity of Sinos River Basin Biota Neotropica
Moser,Camila Fernanda; Avila,Fernanda Rodrigues de; Oliveira,Roberto Baptista de; Oliveira,Juliano Morales de; Borges-Martins,Márcio; Tozetti,Alexandro Marques.
Abstract This work aimed to catalog the species of reptiles of the Sinos River Basin based on records from scientific collections and data collected in the field. We recorded 65 species, including 46 snakes, nine lizards, five turtles, four amphisbaenians and one caiman. Snakes composed most of the recorded specimens (91.3%), and the three most representative are venomous and of medical importance. The most urban region of the basin (Lowland) has the highest number of records. This fact may be a reflection of the high human population density in this region, which would have favored the encounter of specimens and their sending to scientific collections and research centers. It is worth highlighting that most species with few specimens in the collections...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chelonia; Crocodilia; Squamata; Vale dos Sinos; Atlantic Forest; Pampa.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300307
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Defensive repertoire of Xenodon dorbignyi (Serpentes, Dipsadidae) Biota Neotropica
Tozetti,Alexandro Marques; Oliveira,Roberto Baptista de; Pontes,Glaucia Maria Funk.
The ability of a species to defend itself against a predator is directly correlated with its survivorship. Thus, prey/predator interaction mechanisms are important elements of the natural history of species. In this study, we examined the defensive repertoire of the South-American hognose snake (Xenodon dorbignyi) through simulations of predator attacks in the field. Nine defensive displays were observed. The most frequently observed displays were erratic movements, body flattening, head triangulation and tail display. No differences were detected in the defensive strategies shown by males and females, regardless of their reproductive state. Our findings suggest that X. dorbignyi has the ability to evaluate the level of threat imposed by the aggressor,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Defensive behavior; Predation; Snake; Display.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300016
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