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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad de Valparaíso
2006
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=47941210 |
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Sommario:
- Estimación de la tasa de mortalidad natural de Farfantepenaeus californiensis (Holmes, 1900) y Litopenaeus vannamei (Boone, 1931) en la zona costera del Golfo de Tehuantepec, México Blanca Sánchez-Meraz Fleury Carrasco-Ayuso Sebastián Ramos-Cruz Pedro Cervantes-Hernández Ciencias de la Tierra Mexico brown shrimp white shrimp Natural mortality exploitation rate We estimated the monthly natural mortality rate (M) in the marine phase of Litopenaeus vannamei (Boone, 1931) and Farfantepenaeus californiensis (Holmes, 1900) in the Gulf of Tehuantepec, Mexico. The analyzed data were the commercial capture, the capture for unit effort (CPUE) and the fishing effort in trips for the brown shrimp (December 1989 to December 1998), and the white shrimp (October 1992 to December 1998). The models based on growth parameters were the most trustworthy for estimating the natural mortality rate (M). The results were: M= 0.20 monthly for the white shrimp and M= 0.22 monthly for the brown shrimp. The fishing mortality (F) increased from the 4 to the 16 months of age (F4= 0.02 F16= 0.79 monthly in white shrimp) and (F4= 0.18 F16= 1.61 monthly in brown shrimp). These results suggest a minor exploitation of the recruitment and greater on the reproducers groups of both species. In the fishing season 95/96, a decrease and an increase was observed in the captures of white shrimp and brown shrimp, respectively. This apparent tendency still stands according to that reported by El Instituto Nacional de la Pesca (INP) for the fishing season 03/04. 2006 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47941210 en http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.2 Vol.41