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Titolo:
Modeling of the Pacific sardine Sardinops caeruleus fishery of the Gulf ofCalifornia, Mexico
Autore:
Nevarez-Martinez, MO; Chavez, EA; Cisneros-Mata, MA; Lluch-Belda, D;
Indirizzi:
Inst Nacl Pesca, Ctr Reg Invest Pesquera de Guaymas, Guaymas 85400, Sonora, Inst Nacl Pesca Guaymas Sonora Mexico 85400 aymas, Guaymas 85400, Sonora,
Titolo Testata:
FISHERIES RESEARCH
fascicolo: 3, volume: 41, anno: 1999,
pagine: 273 - 283
SICI:
0165-7836(199907)41:3<273:MOTPSS>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
SAGAX CAERULEUS; OF-CALIFORNIA;
Keywords:
simulation; recruitment; catch; Pacific sardine; Gulf of California; Sardinops caeruleus;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Nevarez-Martinez, MO Instntera,Pesca, Ctr Reg Invest Pesquera de Guaymas, Calle 20 605,Col La Ca Inst Nacl Pesca Calle 20 605,Col La Cantera Guaymas Sonora Mexico 85400
Citazione:
M.O. Nevarez-Martinez et al., "Modeling of the Pacific sardine Sardinops caeruleus fishery of the Gulf ofCalifornia, Mexico", FISH RES, 41(3), 1999, pp. 273-283

Abstract

We used a stochastic age-structured model with density-dependent recruitment to study the fishery and population dynamics of the Gulf of California Pacific sardine (Sardinops caeruleus) stock for the period 1972-1973 to 1989-1990. To determine the value of fishing mortality (F) which corresponds tothe long-term optimum yield and cost-benefit ratio (C/B), we simulated fished population trajectories over a period of 50 years. Our results indicated a good fit between observed and predicted annual recruitment and catch. Quasiperiodic oscillations of a five year periodicity for an unfished population faded with increasing F. Maximum yield and C/B were obtained with F = 0.475 and 0.275, and the simulated population began declining with F greater than or equal to 0.5 and greater than or equal to 0.3, respectively. It is proposed that F<0.25 would be adequate for this fishery. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/07/20 alle ore 08:03:36