Growth parameters and mortality rate of the Scomber japonicus peruanus (Jordan & Hubb, 1925) along the Peruvian coast, South Pacific
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2008
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Resumo |
The growth parameters and the mortality rates of the Scomber japonicus peruanus (Chub mackerel) were studied based on monthly data of frequency of fork length classes obtained from commercial landings off the Peruvian coast from 1996 to 1998. The asymptotic body length and growth rate values obtained by the ELEFAN I (Electronic Length Frequency Analysis) ranged from 40.20 cm to 42.20 cm and from 0.38 to 0.39, respectively. The oscillation amplitude was 0.60; the Winter point values varied from 0.50 to 0.60 and the performance index from 2.79 to 2.84. The total mortality rate of the Chub mackerel obtained by the linearized catch curve oscillated between 1.68 and 3.35. The rate of fishing mortality varied from 1.16 to 2.78 and the exploitation rate from 0.68 to 0.84. The annual rate of natural mortality estimated by the Pauly`s method ranged from 0.52 to 0.53. The results obtained allow us to conclude that the longevity of the Chub mackerel was slightly over seven years. National Council for the Development of Science and Technology (CNPq)[N 140023/03-8)] Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
Identificador |
BRAZILIAN JOURNAL OF OCEANOGRAPHY, v.56, n.3, p.201-210, 2008 1679-8759 |
Idioma(s) |
eng |
Publicador |
INST OCEANOGRAFICO, UNIV SAO PAULO |
Relação |
Brazilian Journal of Oceanography |
Direitos |
closedAccess Copyright INST OCEANOGRAFICO, UNIV SAO PAULO |
Palavras-Chave | #Scombridae #Chub mackerel #growth #mortality rate #South-Pacific #TEMPERATURE-DEPENDENT GROWTH #NATURAL MORTALITY #AGE VALIDATION #FISHERIES #GULF #LINNAEUS #ANCHOVY #BIOLOGY #PISCES #WATERS #Marine & Freshwater Biology #Oceanography |
Tipo |
article original article publishedVersion |