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Title

Evaluación de la gamba rosada Aristeus antennatus (Risso, 1816) en el mar Balear

AuthorsCarbonell, Aina
AdvisorDemestre, Montserrat
Issue Date22-Feb-2006
PublisherUniversidad de las Islas Baleares
Abstract[EN] The species of the decapod crustacean Aristeus antennatus harvested in the upper slope of the Balearic Islands has been being exploded for more than 50 years by the trawl fleets that operate around the Islands. The biology of the species appears adapted to the environment in which it lives, with a similar population composition in all the areas, dominated by the females and with a pattern of mobility between fishing grounds clearly related to the reproduction and the processes of maturity and spawning in specific areas. The spawning seems to take place in deeper waters than the used by the adult population. The recruitment preferably appears in the same spawning area and takes place in summer and autumn. The physiological condition of the females drop during the ovarian maturation, with transference of soma to the gonad growth. The females display a pattern of mobility related to reproduction. The males display a reduced pattern of mobility, with mating taking place in spring in all the areas in which the species lives. The increase and the decrease of the male proportion in associated with the processes of mating and to a different mortality related to his shorter longevity and to the mating processes. [...]
[ES] La especie de crustáceo decápodo Aristeus antennatus, explotado en el talud superior de las Baleares se encuentra explotado desde hace más de 50 años por las flotas de arrastre que operan alrededor de las Islas. La biología de la especie aparece adaptada al medio en que vive, con una composición de las poblaciones similar en todas las zonas, dominada por las hembras y con un patrón de movilidad entre caladeros claramente relacionado con la reproducción y con los procesos de maduración y puesta en zonas concretas. [...]
DescriptionMemoria de tesis doctoral presentada por Aina Carbonell Quetglas para optar al grado de Doctora por la Universitat de les Illes Balears (UIB), realizada bajo la dirección de la Dra. Montserrat Demestre Alted del Institut de Ciències del Mar (ICM-CSIC)
URIhttp://hdl.handle.net/10261/128772
Appears in Collections:(ICM) Tesis
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