Predatory impact of the mosquitofish (Gambusia holbrooki Girard) on zooplanktonic populations in a pond at Tenuta di Castelporziano (Rome, Central Italy)

Abstract

A study of a permanent pond located in a nature reserve in Central Italy was carried out over two periods (1985-87; 1995-98) to determine the structure and dynamics of planktonic biocoenosis. The composition of the zooplankton community was quite different in the two periods of study: in the first period, rotifers, small-bodied cladocerans and larval copepods were the dominant groups; in the second there was a shift from rotifers and microcrustaceans to dominance by large-bodied Daphnidae and adult copepods. The possibility is stressed that Gambusia holbrooki, present in 1985 and absent in 1995, may be responsible for the changes in the planktonic community.

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Published
2001-08-01
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Original Articles
Keywords:
zooplankton, fish predation, Gambusia holbrooki, pond
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How to Cite
1.
MARGARITORA FG, FERRARA O, VAGAGGINI D. Predatory impact of the mosquitofish (Gambusia holbrooki Girard) on zooplanktonic populations in a pond at Tenuta di Castelporziano (Rome, Central Italy). J Limnol [Internet]. 2001Aug.1 [cited 2020Aug.6];60(2):189-93. Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2001.1.189