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| LIMA,CAMILLA S.; MAGALHÃES,RAFAEL F.; MARMONTEL,MIRIAM; MEIRELLES,ANA CAROLINA; CARVALHO,VITOR LUZ; LAVERGNE,ANNE; THOISY,BENOIT DE; SANTOS,FABRÍCIO R.. |
| Abstract: The West Indian (Trichechus manatus) and Amazonian (T. inunguis) manatees have a sympatric occurrence at the mouth of the Amazon River. A result of this interspecific encounter is the occurrence of hybrids, which are frequently found along the coasts of Amapá state in Brazil, French Guiana and Guyana. Here we present new genetic evidence indicating the occurrence of a hybrid swarm along the Guianas Shield coastline, which is an interspecific hybrid zone that also separates T. manatus populations located east (Brazil) and west (Caribbean, Gulf of Mexico, Florida and Antilles). In addition, we suggest that this hybrid population occupies a peculiar mangrove-rich environment under strong influence of the Amazon River plume, which requires an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation Genetics; Hybrid zone; Introgression; Amazon River plume; Guianas coastline; Trichechus. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000600615 |
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| Bierne, Nicolas; David, Pierre; Langlade, Aime; Bonhomme, F. |
| Maintaining the integrity of differentiated genomes in marine organisms needs efficient isolation mechanisms, because planktonic larval dispersion provides contacts between taxa. Habitat specialisation is interesting in this respect, because it can both prevent interspecific crosses (each taxon reproduces in its own habitat) and eliminate hybrids (typically less fit than a parental taxon in each habitat). The contact zone between smooth-shelled mussels Mytilus edulis and M. galloprovincialis in Europe is a good example, as allozyme genotypes typical of both taxa seem to segregate into different habitats. However, allozymes may be selected directly and it is not known whether the same pattern can be extended to the whole genome. Here, we used 6 presumably... |
| Tipo: Text |
Palavras-chave: Habitat specialisation; Hybrid zone; Introgression; Mytilus edulis; Mytilus galloprovincialis. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00000/10228/7597.pdf |
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