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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

peciation process on Brazilian continental islands, with the description of a new insular lancehead of the genus Bothrops (Serpentes, Viperidae

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Author(s):
Barbo, Fausto E. [1] ; Booker, William W. [2] ; Duarte, Marcelo R. [1] ; Chaluppe, Betina [1] ; Portes-Junior, Jose A. [1] ; Franco, Francisco L. [1] ; Grazziotin, Felipe G. [1]
Total Authors: 7
Affiliation:
[1] Inst Butantan, Lab Colecoes Zool LCZ, Ave Vital Brazil 1500, BR-05503900 Sao Paulo, SP - Brazil
[2] Florida State Univ, Dept Biol Sci, 319 Stadium Dr, Tallahassee, FL 32306 - USA
Total Affiliations: 2
Document type: Journal article
Source: SYSTEMATICS AND BIODIVERSITY; v. 20, n. 1, p. 1-25, DEC 31 2022.
Web of Science Citations: 1
Abstract

Brazilian continental islands represent a natural laboratory to study speciation driven by recent phenotypic and genotypic divergence. The Bothrops jararaca species group is distributed in the Brazilian Atlantic Forest and on most of the Brazilian continental islands. The group is currently composed of the mainland common lancehead (B. jararaca) and four insular species (B. alcatraz, B. insularis, B. otavioi, and B. sazimai). Here, we evaluate mitochondrial DNA and morphological diversity of the B. jararaca species group and aim to provide additional evidence to understand insularization processes on the Brazilian coast. Our results, interpreted together with a comprehensive review of geomorphological data, provide a new conceptual framework for understanding the colonization process of the Brazilian continental islands. This framework suggests a history of multiple rounds of periodic isolation and reconnection between insular populations and their mainland relatives throughout the last 420,000 years. Furthermore, although some insular populations may have speciated prior to the last glacial maximum, other species likely diverged within the last 11,000 years. Additionally, the repeated evolution of size and dietary shift in the B. jararaca species group suggests a remarkable case of convergent adaptation. Our study provides evidence that the Bothrops from Ilha da Moela (Brazilian state of Sao Paulo) represents an undescribed species, presenting a distinct phenotype, and an exclusive history of isolation and adaptation. We describe this unique lancehead as a new species and we suggest it should be listed as critically endangered based on its endemicity to a small island that is severely impacted by constant and longstanding human presence. (AU)

FAPESP's process: 18/25749-8 - Study on the variability of venom in snakes of the Bothrops jararaca complex and its correlation with the processes of speciation in continental islands
Grantee:José Antonio Portes Junior
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 16/50127-5 - Dimensions US-BIOTA São Paulo: scales of biodiversity: integrated studies of snake venom evolution and function across multiple levels of diversity
Grantee:Inácio de Loiola Meirelles Junqueira de Azevedo
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 12/09156-0 - Phylogenetic systematics, biogeography and taxonomic review of the Bothrops jararaca (Serpentes, Viperidae) group
Grantee:Fausto Erritto Barbo
Support Opportunities: Scholarships in Brazil - Post-Doctoral