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Replacement of fish meal with crustacean meals in diets for long-snouted seahor...
Palma, Jorge; Correia, Miguel; Andrade, José Pedro Andrade; Bureau, DominiqueThis study investigated the effect of partially replacing fish meal with krill and copepod meals in inert diets co-fed with shrimp on the growth and nutrient digestibility of long-snout seahorses (Hippocampus guttulatus). A control diet (Diet 1) using raw starch and four experimental diets with similar protein (approximate to 44.8%) and energy (approximate to 15.1 MJ/kg) levels were tested. Diet 2 used fish mea...
Excitation–contraction coupling reflects the metabolic profile of mantle muscle...
Callaghan, Neal I.; Ducros, Loïck; Bennett, J. Craig; Capaz, Juan Carlos; Andrade, José Pedro Andrade; Sykes, António; Driedzic, William R.The mantle muscle of common cuttlefish, Sepia officinalis, is responsible both for high-magnitude and rapid movements for locomotion, as well as sustained ventilation, which require specific metabolic, electrophysiological, and structural organization. Young cuttlefish have a highly oxidative phenotype and a rapid growth rate. Here, we show high rates of oxygen consumption and protein synthesis in juveniles, an...
Temperature effects on growth performance, fecundity and survival of hippocampu...
Palma, Jorge; Correia, Miguel; Leitão, Francisco; Andrade, José Pedro AndradeAbstract: This experiment aimed to determine the temperature limits beyond which seahorse growth and reproduction become suboptimal due to climate change. Four temperatures (16, 20, 24, and 28 ◦C) were tested to evaluate their effect on juvenile (1–56 days post-parturition (DPP)) and adult (one year old) long-snout seahorses, Hippocampus guttulatus. Additionally, the reproductive performance of adults was obser...
Diel variation of fish eggs and larvae in two Portuguese estuaries (rivers Mira...
Esteves, Eduardo; Coelho, M.L.; Pina, Teresa; Andrade, José Pedro AndradeThe importance of estuaries as fish nurseries areas has been well documented. Several studies have indicated that a variety of factors, both abiotic and biotic, influence the distribution of fish species in a estuary (Robinson & Bain, 1989).
Potential fecundity of twaite shad Alosa fallax fallax (Pisces: Clupeidae) from...
Pina, Teresa; Esteves, Eduardo; Coelho, M.L.; Andrade, José Pedro AndradeThe great majority of European anadromous fishes are threatened species (Leleck, 1980). Despite the existing legal protection for migration fishes, these are vulnerable and particulary threatened by antropogenic impact, by physical obstacles for migrating fish and by physical impacts on spawning and nursery areas.