Reliable biological identification is essential for effective management programs for fishery resources. In many cases, individuals of species with overlapping features and/or subtle morphological differences can be misidentified by traditional taxonomic procedures. The conservation status (i.e., genetic diversity) of commercial fishery stocks of the Southern Atlantic are in general poorly understood. The halfbeak populations found off the coast of northeastern Brazil represent a suitable model for testing controversial identifications, given that the two local species (Hemiramphus brasiliensis and H. balao) not only present very subtle morphological differences, but are also harvested intensively. The present study examined the potential occurrence of the two species off the coast of the Brazilian state of Pernambuco using a multilocus DNA approach, which also provided insights into the conservation status of these stocks in relation to the genetic variation found in both mitochondrial and nuclear regions, analyzed by molecular systematics and population genetics parameters. The results indicated the presence of only one halfbeak species in the region, reinforced by phylogenetic relationships and population genetics in both mitochondrial and nuclear loci. The conservation status of the stocks in terms of their genetic diversity appears to be good despite the intense exploitation. The results of this study provide a new perspective for the conservation and management of this fishery resource, particularly given the fact that the intensive exploitation over the last five decades appears to have impacted a single species, rather than two.
Reviews in Fish Biology and Fisheries – Springer Journals
Published: Jan 24, 2015
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera