caa a22 4500 477116272 CHVBK 20180405111623.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF00005233 doi (NATIONALLICENCE)springer-10.1007/BF00005233 Zagarese Horacio Universidad Nacional del Comahue, Centro Regional Universitario Bariloche, C.C. 1336, (8400), Bariloche, Argentina aut Growth of Odontesthes bonariiensis (Atherinidae) larvae feeding on suboptimal zooplankton densities [Elektronische Daten] [Horacio Zagarese] Synopsis: In this study we investigate the effect of food availability (zooplankton biomass) on the growth of Odontesthes bonariensis (Atherinidae) larvae. The larvae were stocked in four 45 m2 outdoor tanks at relatively high densities (100 and 200 larvae m−2). Because of the high stocking densities, the zooplankton biomass was depleted in all tanks. However, the patterns of food limitation, and particularly periods of severe food shortage, differed in tanks stocked at different densities. We could therefore, observe the effect of food limitation in larvae that differed in weight and age. The effects of variables suspected to influence O. bonariensis growth rates (age and weight of larvae, available zooplankton biomass, mean individual weight of available preys, total ingested prey weight, and mean weight of ingested preys) were investigated using standard multiple regression methods, and a model assuming: (1) an allometric relationship between maximum growth rates and weight of larvae, and (2) an inverse relationship between growth depression and the available zooplankton biomass. Both methods were consistent in showing that only the weight of larvae, and the availability of zooplankton prey had significant effects on the growth of O. bonariensis. The model's results additionally suggest that, if the observed growth rates are scaled by the maximum growth rate corresponding to the larva weight, the effect of zooplankton biomass is largely independent of age and weight of larvae. Kluwer Academic Publishers, 1996 Argentina nationallicence Fish larvae nationallicence Freshwater nationallicence Food limitation nationallicence Pejerrey nationallicence Environmental Biology of Fishes Kluwer Academic Publishers 45/2(1996-02-01), 191-198 0378-1909 45:2<191 1996 45 10641 https://doi.org/10.1007/BF00005233 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00005233 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Zagarese Horacio Universidad Nacional del Comahue, Centro Regional Universitario Bariloche, C.C. 1336, (8400), Bariloche, Argentina aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers 45/2(1996-02-01), 191-198 0378-1909 45:2<191 1996 45 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer