TY - JOUR
T1 - Gillnet selectivity for the spotted rose snapper (Lutjanus guttatus) and the amarillo snapper (Lutjanus argentiventris) in Navidad Bay, Jalisco, Mexico
AU - Rojo-Vázquez, J. A.
AU - Arreguín-Sánchez, F.
AU - Godínez-Domínguez, E.
AU - Ramírez-Rodríguez, M.
PY - 1999/10
Y1 - 1999/10
N2 - Gillnet selectivity for Lutjanus guttatus and L. argentiventris in Navidad Bay, Jalisco (Mexico), was estimated using monthly samples. Gillnets of 7.62- and 8.89-cm mesh size were used for the experimental design; 475 organisms of L. guttatus and 134 organisms of L. argentiventris were caught. The results show that the organisms caught with the 8.89-cm mesh were on average 4 cm larger and 100 g heavier than those caught with the 7.62-cm mesh. For L. guttatus, the optimum length (100% retention probability) was 29.1 cm for the 7.62-cm mesh and 33.9 cm for the 8.89-cm mesh; for L. argentiventris, the optimum length for the 7.62-cm mesh was 28.9 cm and for the 8.89-cm mesh, 33.7 cm. In both cases the catch mode corresponds to the calculated optimum length. The gillnet of 7.62-cm mesh caught the largest abundance in terms of number of individuals and biomass; however, the 8.89-cm mesh assures the catch of organisms that have reached first maturity length.
AB - Gillnet selectivity for Lutjanus guttatus and L. argentiventris in Navidad Bay, Jalisco (Mexico), was estimated using monthly samples. Gillnets of 7.62- and 8.89-cm mesh size were used for the experimental design; 475 organisms of L. guttatus and 134 organisms of L. argentiventris were caught. The results show that the organisms caught with the 8.89-cm mesh were on average 4 cm larger and 100 g heavier than those caught with the 7.62-cm mesh. For L. guttatus, the optimum length (100% retention probability) was 29.1 cm for the 7.62-cm mesh and 33.9 cm for the 8.89-cm mesh; for L. argentiventris, the optimum length for the 7.62-cm mesh was 28.9 cm and for the 8.89-cm mesh, 33.7 cm. In both cases the catch mode corresponds to the calculated optimum length. The gillnet of 7.62-cm mesh caught the largest abundance in terms of number of individuals and biomass; however, the 8.89-cm mesh assures the catch of organisms that have reached first maturity length.
KW - Gillnets
KW - Jalisco
KW - Lutjanidae
KW - Mexico
KW - Selectivity
UR - http://www.scopus.com/inward/record.url?scp=0344223530&partnerID=8YFLogxK
U2 - 10.7773/cm.v25i1.641
DO - 10.7773/cm.v25i1.641
M3 - Artículo
SN - 0185-3880
VL - 25
SP - 145
EP - 152
JO - Ciencias Marinas
JF - Ciencias Marinas
IS - 1
ER -