Has the bumblebee <Emphasis Type="Italic">Bombus bellicosus</Emphasis> gone extinct in the northern portion of its distribution range in Brazil? |
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Authors: | Aline C Martins Gabriel A R Melo |
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Institution: | 1.Department of Zoology, Laboratório de Biologia,Federal University of Parana,Curitiba,Brazil;2.Pós-Gradua??o em Entomologia, Faculdade de Filosofia, Ciências e Letras de Ribeir?o Preto,Universidade de S?o Paulo,Ribeir?o Preto,Brazil |
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Abstract: | Evidence for the extinction of the bumblebee Bombus bellicosus in Paraná state, in Brazil, is presented. The species is found in areas covered with open grass fields and shrub vegetation,
originally ranging from northwestern Argentina to Paraná, where it reached its northeastern limit. Until the early 1980s,
B. bellicosus was relatively abundant in Paraná, when the last known specimens were collected. In recent surveys conducted from 2002 to
2005, no specimens were recovered at sites in which the species was previously known to occur. Possible causes for local extinction
of this species are discussed, including habitat conversion, pollution and climate change. |
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