We studied age, growth and reproduction of an introduced poeciliid, Gambusia holbrooki
(Agassiz, 1859), in the Ebro delta marshes. Maximum ages observed were 2+ in females …

This paper reviews and presents new data on the composition and distribution of fish
species in the continental waters of the Iberian Peninsula, and proposes a division of the …

Genetic differentiation and patterns of variability in the endangered Iberian endemic,
Aphanius iberus, were analyzed by allozyme electrophoresis as a valuable database for …

Based on the comparison of environmental requirements for Ruppia cirrhosa and
Potamogeton pectinatus growth, macrophyte versus phytoplankton biomass and production …

In 1985 a population of Margaritifera auricularia was found in the lowe Ebro river and
adjoining channels in Catalonia, Spain. This species once lived in large rivers over most of …

A total of 1068 eels were examined from a population located in the Guadalquivir river
estuary (37° N, 6° 25′ W). Maximum ages recorded were 4+(males) and 7+(females), and …

We have estimated the individual and synergetic effects of geographical, morphometrical,
environmental and anthopogenic parameters on the fishery yield of coastal lagoons …

Previous research has suggested that competitive bottlenecks may exist for the
Mediterranean grey mullets (Osteichthyes, Mugilidae) at the fry stage with the exotic …

Maximum ages observed were 1+ in both sexes. The seasonal growth period started in
March and continued until September. The females reached larger sizes than the males, as …

Les prises totales ou abondance de civelles et d'anguillettes concernant 9 pays sont
présentées. La caractéristique principale commune à tous ces pays consiste en une …