TY - JOUR
T1 - Review of stock assessment and fishery biology of Dosidicus gigas in the Gulf of California, Mexico
AU - Morales-Bojórquez, E.
AU - Angel Cisneros-Mata, M.
AU - Nevárez-Martínez, M. O.
AU - Hernández-Herrera, A.
N1 - Funding Information:
We thank Ellis Glazier, CIBNOR, S.C., for editing the English version of this work in manuscript form. The first author thanks Antonio Dı́az de León, President of the Instituto Nacional de la Pesca, and Pablo Arenas-Fuentes, Director of Fisheries at the Instituto Nacional de la Pesca, for their support in the presentation of this paper to the I Simposium Internacional de Calamares del Pacı́fico, and VII COLACMAR, Cd Trujillo, Perú.
PY - 2001
Y1 - 2001
N2 - Two periods in the Dosidicus gigas fishery in the Gulf of California, Mexico, have been examined. The first was in the early 1980s, when there was a single stock with multiple cohorts and recruitment to the principal fishing grounds was in May. Management schemes were difficult to establish because of the variation in the annual abundance of the cohorts. During 1983, the fishery collapsed; an effect of El Niño was an acceptable hypothesis. The second period began in 1994. Landings increased from 1994 to 1996. During this time there was only one annual cohort in the fishery with recruitment in May. A management strategy was proposed adopting the stock assessment used for Illex argentinus in the Falkland Islands; assuming an annual recruitment, an estimate of the proportional escapement and modelling the catch-per-unit-effort data of the three commercial fleets. Using this approach, the landings in 1997 were 120 000 t. However, in 1998 a decrease in landings occurred, a possible cause could have been the 1998 El Niño. Some aspects of these two periods are discussed, principally showing the differences in the management approach.
AB - Two periods in the Dosidicus gigas fishery in the Gulf of California, Mexico, have been examined. The first was in the early 1980s, when there was a single stock with multiple cohorts and recruitment to the principal fishing grounds was in May. Management schemes were difficult to establish because of the variation in the annual abundance of the cohorts. During 1983, the fishery collapsed; an effect of El Niño was an acceptable hypothesis. The second period began in 1994. Landings increased from 1994 to 1996. During this time there was only one annual cohort in the fishery with recruitment in May. A management strategy was proposed adopting the stock assessment used for Illex argentinus in the Falkland Islands; assuming an annual recruitment, an estimate of the proportional escapement and modelling the catch-per-unit-effort data of the three commercial fleets. Using this approach, the landings in 1997 were 120 000 t. However, in 1998 a decrease in landings occurred, a possible cause could have been the 1998 El Niño. Some aspects of these two periods are discussed, principally showing the differences in the management approach.
KW - Dosidicus gigas
KW - Gulf of California
KW - Management
UR - http://www.scopus.com/inward/record.url?scp=0035170184&partnerID=8YFLogxK
U2 - 10.1016/S0165-7836(01)00372-1
DO - 10.1016/S0165-7836(01)00372-1
M3 - Artículo
SN - 0165-7836
VL - 54
SP - 83
EP - 94
JO - Fisheries Research
JF - Fisheries Research
IS - 1
ER -