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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Estadual de Maringá
2015
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=307239651001 |
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Inhaltsangabe:
- Aspects of the reproductive biology and characterization of Sciaenidae captured as bycatch in the prawn trawling in the northeastern Brazil Carlos Antônio Beserra da Silva Júnior Andréa Pontes Viana Flávia Lucena Frédou Thierry Frédou Medicina Demersal trawling coastal zone sexual maturity The Brazilian prawn fishery, as other bottom traw ling fisheries, is considered quite efficient in catching the target species but with low selectivity and high rates of bycatch. The family Sciaenidae prevails among fish species caught. The study was cond ucted in the Pernambuco St ate (Barra de Sirihaém), northeastern Brazil. From August 2011 to July 2012, 3,278 sciaenid specimens we re caught, distributed into 16 species, 34.2% males and 41.5% females. Larimus breviceps , Isopisthus parvipinnis , Paralonchurus brasiliensis and Stellifer microps were the most abundant species. The area was considered a recruitment and reproduction area with the high est reproductive acti vity between December 2011 and July 2012. The constant frequency of mature I. parvipinnis and S. microps in catches throughout th e year suggests that these species are multiple spawners and use the area during their reproductive period . Since most individuals caught as bycatch have not reached sexual maturity, ev idencing the need for a better monitoring of the area and the Sciaenidae caught as bycatch, once this incidental caught can cause fluctuations in the recruitment, increasing the proportion of immature individuals in the population and negatively affecting the reproductive success of the species. 2015 artículo científico 1679-9291 https://www.redalyc.org/articulo.oa?id=307239651001 en http://www.redalyc.org/revista.oa?id=3072 Acta Scientiarum. Health Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Health Sciences (Brasil) Num.1 Vol.37