Low temperature stress in a cultured fish (Piaractus mesopotamicus) fed with Pyropia columbina red seaweed-supplemented diet     

Ale  Analía  Bacchetta  Carla  Rossi  Andrea S.  Scarabotti  Pablo A.  Cazenave  Jimena 《Fish physiology and biochemistry》2021,47(4):829-839

Fish Physiology and Biochemistry - This study aimed to analyze the cold stress effects (in terms of hematology, energy reserves, and oxidative stress) in Piaractus mesopotamicus (pacú) and...  相似文献   

Flood pulse and the dynamics of fish assemblage structure from neotropical floodplain lakes     

Pablo A. Scarabotti  Javier A. López  Marc Pouilly 《Ecology of Freshwater Fish》2011,20(4):605-618

Abstract – The dynamics of fish assemblages from seven floodplain lakes of Salado River (Argentina) was monthly analysed during two contrasting hydrological seasons. Partial canonical correspondence analysis indicated that assemblage structure was predictably linked to environmental characteristics that varied along temporal and spatial scales. Species distributed differentially along an environmental gradient of temperature, hydrometric level, conductivity, macrophyte cover and transparency in relation to their sensory capabilities (following piscivory‐transparency‐morphometry model) and life history strategies. During high water season, assemblages were associated with temperature and hydrometric level, factors which varied mainly across temporal scales and exhibit a regional range of action. During low waters, assemblage structure correlated with macrophyte cover and transparency, factors that varied fundamentally on spatial scales and have local impact. These results indicate that the determinism of fish assemblages does not vary substantially between hydrometric periods, although the environmental variables affecting fish assemblages and their scale of action are clearly different.  相似文献