期刊
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
卷 84, 期 -, 页码 29-37出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.dsr.2013.10.001
关键词
Chaceon; Crustacean; Fisheries; Geographic scale; mtDNA
类别
资金
- CAPES
- CNPq Research Scholarships [PQ 310820/2006-5, 308658/20094, 306904/2012-8]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - CAPES/Brazil funds [AUXPE 1141/2010]
- Direccion Nacional de Recursos Acuaticos (DINARA-MGAP)
- [SEAP/PR/064/2005]
- [SEAP/PR 027/2007]
- [MPA/039/2009]
Deep-sea red crabs Chaceon ramosae and Chaceon notialis are commercially and ecologically important crustaceans in South Atlantic waters. With some overlapping occurring at the edge of the crabs' distribution, the fisheries are managed separately in Brazil and Uruguay, with some differences in the regulations, although the stock is supposedly shared between the two countries. To assess genetic information on these two species, we examined the nucleotide sequence of the mitochondrial 16S rDNA and CO1 mtDNA genes in samples from the southern region. We also compared these data to sequences from other congeners. The genetic analysis revealed a clear separation between C notialis and C ramosae. In addition, we detected the existence of at least two different groups within the species that is currently recognized as C. notialis. This might indicate the existence of cryptic species, leading us to speculate about the presence of two different taxonomic entities, although further research is needed to resolve this issue. (C) 2013 Elsevier Ltd. All rights reserved.
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