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Fish catch composition of the deep-sea decapod crustacean fisheries in the Balearic Islands (western Mediterranean)

AutorMoranta, Joan ; Massutí, Enric; Morales-Nin, Beatriz
Fecha de publicación2000
EditorElsevier
CitaciónFisheries Research 45: 253- 264 (2000)
ResumenThe catch composition of two commercial vessels of the trawl fleet operating from Mallorca (Balearic Islands, western Mediterranean) was analysed. A total of 4959 kg resulting from 144 fishing hours was sampled from October 1996 to December 1997. The fishes represented the major proportion with respect to the total catch. The analysis of the fish discards assembled them in three depth related groups: group A (mean depth 300 m); group B (mean depth 489 m); and group C (mean depth 616 m). Species richness, number of individuals and biomass decreased with depth. The diversity and evenness indices also varied with depth, but no significant differences were found. Fishes, with around 70%, dominated the biomass discarded in the three depth groups. Within the landings, fish biomass also represented the major proportion in groups A and B, but in group C the crustaceans biomass dominated. Our results confirm that an important fraction of the catch of the two deep-sea decapod crustacean fisheries is discarded.
URIhttp://hdl.handle.net/10261/54075
DOI10.1016/S0165-7836(99)00119-8
Identificadoresdoi: 10.1016/S0165-7836(99)00119-8
issn: 0165-7836
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