||Laboratory Experiments on Mechanisms of Competition and Resource Partitioning between 'Menidia menidia' (L.) and 'Menidia beryllina' (Cope) (Osteichthyes:Atherinidae).
Bengtson, D. A. ;
||Environmental Research Lab., Narragansett, RI.
Feeding stuffs ;
Marine fishes ;
Collection methods ;
Rhode Island ;
Menidia menidia ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.
||Pub. in Jnl. of Experimental Marine Biology and Ecology, v92 p1-18 1985.
|NTIS Title Notes
||Reprint: Laboratory Experiments on Mechanisms of Competition and Resource Partitioning between 'Menidia menidia' (L.) and 'Menidia beryllina' (Cope) (Osteichthyes:Atherinidae).
|PUB Date Free Form
||PC A02/MF A01