Portal de Periódicos da CAPES

Three small-scale fisheries based on the island of Majorca (NW Mediterranean)

1995; Elsevier BV; Volume: 42; Issue: 10 Linguagem: Inglês

10.1016/0967-0653(95)99603-o

1878-6731

M. Iglesias, Enric Massutı́, Olga Reñones, Beatríz Morales-Nin,

Coral and Marine Ecosystems Studies

espanolEl 45% de la flota pesquera de la isla de Mallorca (Mediterraneo Noroccidental) se dedica a tres pesquerias estacionales dirigidas a la captura de jonquillo (Aphia minuta) de diciembre a marzo, langosta (Palinuru$ r;ilephas) de marzo a agosto y lIampuga (Coryphaena hippurus) de agosto a diciembre. En 1991-1992, el numero de barcos dedicados a la pesca de langosta fue el 32% del total, distribuidos alrededor de toda la Isla, el 13% se dedico a la pesca de jonquillo principalmente en la zona de bahias y el 12% a la pesca de lIampuga y pez piloto (Naucrates ductor), principal especie acompa- nante de esta pesqueria. El numero de unidades dedicados a cada pesqueria durante el periodo 1982-1992 ha permanecido bastante estable, con cierta tendencia a aumentar en la pesqueria de langosta. Los artes utilizados en cada pesqueria son la jabega para el jonquillo, trasmallos para la langosta y red de cerco para la /lampuga. La CPUE de jonquillo descendio desde 1983 hasta 1987, manteniendose estable desde 1987 hasta 1990 y recuperandose en 1991. Desde 1988, la CPUE de /lampuga y pez piloto se ha mantenido estable, alrededor de las 2.2 Tm/barco. Los datos de captura de langosta son escasos, solo se poseen estimaciones que en 1986 las situaban en 77.7 Tm. En 1986 y 1988, las distribuciones de tallas de langosta muestran gran variabilidad, con tallas superiores para los machos, mientras que el rango de distribucion de tallas de la captura de jonquillo en las temporadas 1990-91 y 1991-92 fue de 14-45 mm, con un aumento progresivo de las tallas minima, maxima y media a lo largo del periodo de explotacion. Las distribuciones mensuales y la talla media de captura de /lampuga y pez piloto en 1990 y 1991 muestran un rapido crecimiento de estas dos especies durante su explotacion. EnglishAround 45 % of the fishing fleet based on the island of Majorca (northwestern Mediterranean) engages in three seasonal fisheries directed at the transparent goby, Aphia minuta (from December to March). Lobster, Palinurus elephas (from March to August), and dolphinfish, Coryphaena hippurus (from August to December). In 1991-92, the boats engaging in the lobster fishery amounted to 32 % of the total number of boats and were based around the entire island; 13 % of the total number of boats engaged in the transparent goby fishery and were based mainly in the vicinity of the bays; and 12 % of the total number of boats engaged in the fishery for dolphinfish and pilot fish (Naucrates ductor), the main by-catch species in that fishery. The number of units allocated to each of these fisheries remained relatively constant over the period 1982-1992, although the number of units operating in the lobster fishery exhibited a certain tendency to increase. The gears used are boat seines in the transparent goby fishery, trammel nets in the lobster fishery, and purse seines in the dolphinlish fishery. Yields in the transparent goby fishery declined from 1983 to 1987, remained stable from 1987 to 1990, and recovered in 1991. Yields in the dolphinfish and pilotfish fishery have remained stable at around 2.2 tonnes/boat since 1988. Catch data on lobsters are scarce, the only estimate being 77.7 t in 1986. The size distributions lor lobster were highly variable in 1986 and 1988, with males tending to have larger sizes. The size distributions in the transparent goby catches ranged from 14 to 45 mm in the 1990-91 and 1991-92 fishing seasons and exhibited progressive increases in the minimum, maximum, and mean sizes during the fishing season. Monthly size distributions and mean size values for dolphinfish and pilot fish in 1990 and 1991 are indicative of rapid growth of these species during the fishing season.