Records of the rattlesnakes Crotalus durissus terrificus (Laurenti) (Serpentes, Viperidae) in the State of Rio de Janeiro, Brazil: a possible case of invasion facilitated by deforestation

  • Bastos E
  • Araújo A
  • Silva H
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Abstract

This paper documents the presence of rattlesnakes, as an invasive species, in several municipalities of the State of Rio de Janeiro. As previous registers indicate, these snakes probably invaded at least the municipality of Valença carried by floodwaters between the decades of 1950 and 1960. In the new environment, along the margins of the Rio Preto, these snakes were able to establish new populations in deforested areas turned into cattle grazing. The presence of rattlesnake in the municipality of Barra do Piraí, a municipality that has no border with Rio Preto, however, indicates that these snakes dispersal into new areas may be facilitated by open areas, represented by pastures, created after deforestations.Esse trabalho documenta a presença de cascavéis, como invasoras, em municípios do Estado do Rio de Janeiro. Conforme registros anteriores, essas cobras muito provavelmente invadiram pelo menos o município de Valença carreadas durante enchentes que ocorreram entre as décadas de 1950 e 1960. No novo ambiente, ao longo da margem do Rio Preto, essas cobras puderam se estabelecer principalmente em áreas desmatadas de pasto. Entretanto, a ocorrência de cascavéis no Município de Barra do Piraí, único município que não tem fronteira com o Rio Preto, indica a habilidade de dispersão desta espécie por áreas abertas de pastos, criadas após desmatamento.

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Bastos, E. G. de M., Araújo, A. F. B. de, & Silva, H. R. da. (2005). Records of the rattlesnakes Crotalus durissus terrificus (Laurenti) (Serpentes, Viperidae) in the State of Rio de Janeiro, Brazil: a possible case of invasion facilitated by deforestation. Revista Brasileira de Zoologia, 22(3), 812–815. https://doi.org/10.1590/s0101-81752005000300047

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