63ª Reunião Anual da SBPC

C. Ciências Biológicas - 14. Zoologia - 6. Zoologia

GEOGRAPHIC DISTRIBUTION IN NEOTROPICAL PITVIPERS Bothrops atrox GROUP (LINNAEUS, 1758) (VIPERIDAE: CROTALINAE): A SURVEY IN THE MUSEUM COLLECTION ALPHONSE RICHARD HOGE TROUBLESHOOTING SYSTEMATICS AND CONSERVATION

Simone Paula Silva Vasconcellos 1 Circe Cavalcanti Albuquerque 1 Silvia Regina Travaglia-Cardoso 1 Cláudia Renata Madella 2 Maria da Graça Salomão 3

1. Laboratório Herpetologia - Instituto Butantan 2. Departamento de Genética e Biologia Evolutiva - IBUSP 3. Profa. Dra./ Orientadora - Laboratório Herpetologia - Instituto Butantan

INTRODUÇÃO:

Bothrops atrox group is a very diverse snake taxon regarding morphological characters, macro and microgeographic habitat occupation, sexual and ontogenetic variations, but low levels of mtDNA phylogeographic distinction. Depending on the author, B. atrox species complex comprehends the lineages B. atrox (Amazonian distribution), B. moojeni (Central Brasil and neighbourhood), B. marajoensis (described for Ilha de Marajó) and Atlantic forest populations assigned as Bothrops leucurus (presently including B. pradoi). However, species boundaries are unknown.

METODOLOGIA:

We surveyed the register books of the Museum Collection Alphonse Richard Hoge - IBU and scattered literature in an attempt to define their boundaries in geographic distribution (through DIVA-GIS), searching for possible sympatric regions of occurrence and discuss phylogeography of B. atrox species group.

RESULTADOS:

Preliminary data pointed out approximately 54 localities for the presence of B. leucurus, 179 of B. atrox, 150 of B. moojeni, and 05 of B. marajoensis. Maps show sympatry areas between B. atrox and B. moojeni (northern Tocantins) where putative hybrids have been observed and collected. Three records of B. marajoensis in the continent were found namely Monte Alegre – PA, Pinheiro – MA and Macapá – AP. B. leucurus including B. pradoi shows a wider geographic distribution along Atlantic forest which should be taken into consideration when discussing its conservation status. We carry out populational studies combined to molecular analysis to evaluate polymorphism as well as to check the status of those putative hybrids Bothrops atrox species complex.

CONCLUSÃO:

Seventy six individuals of B. marajoensis had been registered in the ARH collection, which means that many other areas of its distributions require sampling. Concerning B. atrox about 500 specimens were recorded in the collection, but representatives from Bolívia, Guyana and French Guiana were totally absent. Therefore these countries are target areas for getting snakes.

Palavras-chave: Instituto Butantan Museum Collection, Bothrops atrox, Geographic Distribution.