Record Display for the EPA National Library Catalog


Main Title Laboratory Experiments on Mechanisms of Competition and Resource Partitioning between 'Menidia menidia' (L.) and 'Menidia beryllina' (Cope) (Osteichthyes:Atherinidae).
Author Bengtson, D. A. ;
CORP Author Environmental Research Lab., Narragansett, RI.
Year Published 1985
Report Number ERLN-202 ;EPA/600/J-85/379;
Stock Number PB86-187176
Additional Subjects Feeding stuffs ; Marine fishes ; Competition ; Estuaries ; Biomass ; Larvae ; Density(Mass/volume) ; Growth ; Weight(Mass) ; Survival ; Requirements ; Adaptation ; Collection methods ; Rhode Island ; Reprints ; Menidia Menidia ; Menidia beryllina
Library Call Number Additional Info Location Last
NTIS  PB86-187176 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
Postlarvae of two atherinid species, Menidia menidia and Menidia beryllina, were tested in two 14-day experiments at four densities of fish to determine effects of interspecific versus intraspecific competition for food. In one experiment, when M. menidia was slightly larger than M. beryllina (simulating a slightly earlier hatching time in nature) M. menidia exhibited a clear competitive advantage over M. beryllina, as demonstrated by covariance analysis of fish biomass change on fish density. In the second experiment, when M. beryllina was larger than M. menidia, neither species showed competitive advantage. The results suggest that M. menidia has an inherently superior ability to compete for food. In another set of experiments, post-larval and juvenile M. menidia and M. beryllina were fed varying rations of Artemia nauplii during a series of three 10-day feeding trials. As Menidia menidia grew, they required a smaller percentage of body weight per day in food for maximum growth.