ISSN:
1573-5117
Keywords:
predation
;
cyclopoids
;
Barra Bonita reservoir
;
experimental prey-predator populations
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Feeding experiments with two species of carnivorous copepod, Mesocyclops longisetus (Thiebaud) and Mesocyclops kieferi Van de Velde from Barra Bonita, a eutrophic reservoir in São Paulo, Brasil, were performed using two common types of prey: Ceriodaphnia cornuta, a cladoceran, with a mean body length of 464 µm (including spines) or 393 µm (without spines), and Brachionus calyciflorus, a rotifer with a mean body length of 350 µm (including spines) or 279 µm (without spines). Both species showed higher consumption rates on Brachionus than on Ceriodaphnia. For Mesocyclops longisetus, the average rates were: 2.19 prey ind−1 h−1 (Brachionus), and 1.30 prey ind−1 h−1 (Ceriodaphnia). For Mesocyclops kieferi, the rates were 1.85 prey ind−1 h−1 (Brachionus) and 0.60 prey ind−1 h−1 (Ceriodaphnia). These experimental data are discussed with reference to the dynamics of the predator and prey populations in the reservoir.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00048631
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