Journal of Plankton Research Vol.25 no.9 pp.1035-1046, 2003
© Oxford University Press 2003
Larval fish communities in the Medes Islands Marine Reserve (North-west Mediterranean)
Institut de Ciències del Mar, Csic, Passeig Maritim 3749, 08003 Barcelona, 1 Departament Decologia, Facultat de Biologia, Universitat de Barcelona, Avda Diagonal, 645, 08028 Barcelona and 2 Centro de Estudios Avanzados de Blanes, Csic, Camí de Santa Bárbara SN, E-17300 Blanes, Girona, Spain
* Corresponding Author Email: anas{at}icm.csic.es
This study describes the spatio-temporal distribution patterns of fish larvae in a nearshore temperate area off the north-west Mediterranean, located in the vicinity of the Medes Islands Marine Reserve. Our findings suggest that both the abundance and species richness of the larvae of shorefish species (i.e. resident species) is high in the Medes Islands but also in the adjacent unprotected coastal area. In addition to the large inshore species component observed in the Medes Islands the results were also indicative of a significant influx of shelf and oceanic species, and hence it can be concluded that the effect of protection is not the only factor responsible for the spatial patterns observed. The larvae of certain shorefish species, e.g. Coris julis, Boops boops, Serranus hepatus, Blenniidae and Gobiidae undergo significant dispersal out towards the open sea, while other species, e.g. Tripterygion tripteronotus and Gobiesocidae were able to maintain distributions that remain in the vicinity of the adults, confirming that pelagic larvae are not necessarily at the mercy of passive dispersal.
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