Original Articles
1 August 2001
Vol. 60 No. 2 (2001)
https://doi.org/10.4081/jlimnol.2001.1.189

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

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zooplankton, fish predation, Gambusia holbrooki, pond
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Authors

Fiorenza G. MARGARITORA
fiorenza.margaritora@uniroma1.it
Ornella FERRARA
Daria VAGAGGINI
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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“Predatory Impact of the Mosquitofish (Gambusia Holbrooki Girard) on Zooplanktonic Populations in a Pond at Tenuta Di Castelporziano (Rome, Central Italy)”. 2001. Journal of Limnology 60 (2): 189-93. https://doi.org/10.4081/jlimnol.2001.1.189.