3 documents found, page 1 of 1
Evidence of genetic segregation among meagre (Argyrosomus regius) Atlantic spaw...
Almeida, R.; Mateus, C.S.; Alves, M.J.; Marques, J.P.; Pereira, J.; Prista, N.; Cabral, H.; Almeida, P.R.; Quintella, B.R.The meagre Argyrosomus regius, one of the largest sciaenidae in the world, is a valuable resource for fisheries and aquaculture. Despite its socioeconomic relevance, knowledge about population dynamics and wild stocks is still scarce, and conservation risks are associated with overexploitation. Two genetic distinct groups, one in the North Atlantic Ocean and one in the eastern Mediterranean Sea, were identified...
Evaluating movement and populations Dynamics of meagre (Argyrosomus regius) usi...
Tanner, S.; Reis-Santos, P.; Alexandre, C.; Almeida, P.R.; Alves, J.; Amorim, C.; Costa, J.L.; Domingos, I.; Fonseca, P.; Lança, M.J.; Marques, J.P.Meagre (Argyrosomus regius) forms ephemeral aggregations during the reproductive season that, given the large size and high commercial value of this species, lead to increased risk of overexploitation. Data paucity together with the inability to apply classical fisheries assessment techniques and management measures due to the seasonally-elusive dynamics of adult meagre, and the diffuse nature of artisanal fish...
First representation of the trophic structure and functioning of the Portuguese...
Veiga-Malta, T.; Szalaj, D.; Angelico, M. M.; Azevedo, M.; Farias, I; Garrido, S.; Lourenco, S.; Marçalo, Ana; Marques, V; Moreno, A.; Oliveira, P. B.In this study, we analysed the structure and functioning of the Portuguese continental shelf ecosystem and investigated the role of sardine Sardina pilchardus using the Ecopath massbalance approach. An Ecopath model was configured to represent the continental shelf waters in the period 2006-2009. The model showed that biomass was concentrated in low and intermediate trophic levels as in other upwelling areas. S...