9 documents found, page 1 of 1
Plankton community and copepod production in a temperate coastal lagoon: what i...
Cruz, Joana; Teodosio, Maria; Garrido, Susana; Ben-Hamadou, Radhouane; Chicharo, Luis; Ré, Pedro; Santos, A.M.P.Coastal lagoons are often exposed to intense short-term environmental changes and strong anthropogenic pressures influencing zooplanktonic communities and production. However, most works focus on long-term temporal scales using monthly or seasonal sampling strategies. The present study analysed the structure of the mesozooplanktonic assemblages, the production (egg production rates) and physiological condition ...
Sardine (Sardina pilchardus) larval dispersal in the Iberian upwelling system, ...
Santos, A.M.P.; Nieblas, A.-E.; Verley, P.; Teles-Machado, A.; Bonhommeau, S.; Lett, C.; Garrido, Susana; Peliz, A.The European sardine (Sardina pilchardus) is the most important small pelagic fishery of the Western Iberia Upwelling Ecosystem (WIUE). Recently, recruitment of this species has declined due to changing environmental conditions. Furthermore, controversies exist regarding its population structure with barriers thought to exist between the Atlantic-Iberian Peninsula, Northern Africa, and the Mediterranean. Few st...
RNA:DNA ratios as a proxy of egg production rates of Acartia
Cruz, Joana; Alexandra Teodosio Chicharo, Maria; Ben-Hamadou, Radhouane; Manuel Zambujal Chicharo, Luis; Garrido, Susana; Re, Pedro; Santos, A.M.P.Estimates of copepod secondary production are of great importance to infer the global organic matter fluxes in aquatic ecosystems and species-specific responses of zooplankton to hydrologic variability. However, there is still no routine method to determine copepods secondary production in order to eliminate time consuming experimental analyses. Therefore, we determined whether there is a correlation between Eg...
Assessing the impact of environmental forcing on the condition of anchovy larva...
Teodosio, Maria; Garrido, Susana; Peters, J.; Miguel de Sousa Leitão, Francisco; Re, P.; Peliz, A.; Santos, A.M.P.Understanding the environmental processes affecting fish larvae survival is critical for population dynamics,"conservation purposes and to ecosystem-based fishery management. Using anchovies (Engraulis encrasicolus) of the Cadiz Gulf as a study case and considering the "Ocean Triad" hypothesis, we investigate the larval ecophysiological status and potential survival in relation to oceanographic variables. There...
Assessing the impact of environmental forcing on the condition of anchovy larva...
Teodósio, M.A.; Garrido, Susana; Peters, J.; Leitão, F.; Re, Pedro; Peliz, A.; Santos, A.M.P.Understanding the environmental processes affecting fish larvae survival is critical for population dynamics, conservation purposes and to ecosystem-based fishery management. Using anchovies (Engraulis encrasicolus) of the Cadiz Gulf as a study case and considering the “Ocean Triad” hypothesis, we investigate the larval ecophysiological status and potential survival in relation to oceanographic variables. There...
Effect of temperature on the growth, survival, development and foraging behavio...
Garrido, Susana; Cristovao, A.; Caldeira, C.; Ben-Hamadou, Radhouan; Baylina, N.; Batista, H.; Saiz, E.; Peck, M. A.; Re, P.; Santos, A.M.P.The effect of water temperature on the growth, survival, development and foraging behaviour of European sardine Sardina pilchardus larvae was examined in the laboratory. First, the capability of early sardine larvae to cope with starvation was assessed at temperatures from 10 to 22 degrees C. Second, we examined under ad libitum feeding conditions and across the range of temperatures experienced by sardines dur...
Born small, die young: Intrinsic, size-selective mortality in marine larval fish
Garrido, Susana; Ben-Hamadou, R.; Santos, A.M.P.; Ferreira, S.; Teodósio, M.A.; Cotano, U.; Irigoien, X.; Peck, M.A.; Saiz, E.; Re, PedroMortality during the early stages is a major cause of the natural variations in the size and recruitment strength of marine fish populations. In this study, the relation between the size-at-hatch and early survival was assessed using laboratory experiments and on field-caught larvae of the European sardine (Sardina pilchardus). Larval size-at-hatch was not related to the egg size but was significantly, positive...
Effects of temperature, food type and food concentration on the grazing of the ...
Garrido, Susana; Cruz, Joana; Santos, A.M.P.; Re, Pedro; Saiz, EnricLaboratory experiments were conducted to study the combined effect of temperature (8, 13, 19 and 24C), food type and food concentration on the grazing rates of the adult stages of the calanoid copepod Centropages chierchiae. As prey, the diatom Phaeodactylum tricornutum and the dinoflagellate Gymnodinium sp. (both ca. 15 m cell diameter) were used at a range of carbon concentrations similar to the ones experien...
Oceanographic and behavioural processes controlling invertebrate larval dispers...
Queiroga, Henrique; Cruz, Teresa; dos Santos, A.; Dubert, J.; Gonzaléz-Gordillo, J.I.; Peliz, A.; Santos, A.M.P.Oceanographic and behavioural processes controlling invertebrate larval dispersal and recruitment in the Western Iberia Upwelling Ecosystem.