The history of the introduction of the giant river prawn, Macrobrachium cf. rosenbergii (Decapoda, Palaemonidae), in Brazil: new insights from molecular data
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Data
2011-01-01
Autores
Iketani, Gabriel
Pimentel, Luciana
Silva-Oliveira, Glaúcia
Maciel, Cristiana
Valenti, Wagner Cotroni [UNESP]
Schneider, Horacio
Sampaio, Iracilda
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Genética
Resumo
The giant river prawn, Macrobrachium cf. rosenbergii, is one of the most cultivated freshwater prawns in the world and has been introduced into more than 40 countries. In some countries, this prawn is considered an invasive species that requires close monitoring. Recent changes in the taxonomy of this species (separation of M. rosenbergii and M. dacqueti) require a re-evaluation of introduced taxa. In this work, molecular analyses were used to determine which of these two species was introduced into Brazil and to establish the geographic origin of the introduced populations that have invaded Amazonian coastal waters. The species introduced into Brazil was M. dacqueti through two introduction events involving prawns originating from Vietnam and either Bangladesh or Thailand. These origins differ from historical reports of the introductions and underline the need to confirm the origin of other exotic populations around the world. The invading populations in Amazonia require monitoring not only because the biodiversity of this region may be affected by the introduction, but also because admixture of different native haplotypes can increase the genetic variability and the likelihood of persistence of the invading species in new habitats.
Descrição
Palavras-chave
Bioinvasion, exotic species, giant river prawn, Macrobrachium dacqueti, COI, 16S rRNA, Amazonia
Como citar
Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 34, n. 1, p. 142-151, 2011.