A NEW AND THREATENED INSULAR SPECIES OF LANCEHEAD FROM SOUTHEASTERN BRAZIL

A NEW AND THREATENED INSULAR SPECIES OF LANCEHEAD FROM SOUTHEASTERN BRAZIL

Author Barbo, Fausto E. Google Scholar
Grazziotin, Felipe G. Google Scholar
Sazima, Ivan Google Scholar
Martins, Marcio Google Scholar
Sawaya, Ricardo Jannini Autor UNIFESP Google Scholar
Institution Univ Estadual Paulista Julio de Mesquita Filho UN
Universidade de São Paulo (USP)
Universidade Estadual de Campinas (UNICAMP)
Universidade Federal de São Paulo (UNIFESP)
Abstract We describe a new species of Bothrops from Vitoria Island, off the coast of Sao Paulo, southeastern Brazil. The new species differs from the mainland coastal populations of B. jararaca mostly in its smaller and stouter body, number and form of scales, and hemipenial morphology. From B. insularis and B. alcatraz, both related species endemic to islands in southeastern Brazil, B. otavioi sp. nov. differs mainly in its body form and number of scales. The new species has the twist common mitochondrial haplotype for mainland populations of B. jararaca, which is also found in B. alcatraz. A mitochondrial genealogy (gene tree) shows the new species nested within the northern clade of B. jararaca. This genealogical pattern can be explained by a recent speciation event for B. otavioi sp. nov. The isolation of insular species of Bothrops from continental ancestor populations are probably related to the same vicariant process, the oscillations of sea level during the Pleistocene. The new species feeds on small hylid frogs, and attains sexual maturity at 388 mm snout-vent length (SVL; males) and 692 mm SVL (females). Bothrops facial sp. nov. is endemic to Vitoria Island, and should be listed as critically endangered because it is known from only a single area (an island), its geographic range covers less than 100 km(2), and there is a projected continuing decline in the quality of its habitat because of increasing human settlement.
Keywords Atlantic Forest
Bothrops jararaca group
Bothrops otavioi sp nov.
Evolution
Island endemics
Quaternary
Taxonomy
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Grant number FAPESP: 08/50068-2
FAPESP: 07/52781.-5
FAPESP: 10/50146-3
FAPESP: 08/54472-2
FAPESP: 2011/50206-9
Date 2012-09-01
Published in Herpetologica. Emporia: Herpetologists League, v. 68, n. 3, p. 418-429, 2012.
ISSN 0018-0831 (Sherpa/Romeo, impact factor)
Publisher Herpetologists League
Extent 418-429
Origin https://doi.org/10.1655/HERPETOLOGICA-D-12-00059.1
Access rights Closed access
Type Article
Web of Science ID WOS:000308511700014
URI http://repositorio.unifesp.br/11600/43784

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