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vol.62 issue1Condition factor in nine species of fish of the Characidae family in the upper Paraná River floodplain, BrazilComparative morphology of Astraea latispina (Philippi, 1844) and Astraea olfersii (Philippi, 1846) (Mollusca, Gastropoda, Turbinidae) author indexsubject indexarticles search
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Brazilian Journal of Biology

Print version ISSN 1519-6984

Abstract

LANSAC-TOHA, F. A.; VELHO, L. F. M.; HIGUTI, J.  and  TAKAHASHI, E. M.. Cyclopidae (Crustacea, Copepoda) from the upper Paraná River floodplain, Brazil. Braz. J. Biol. [online]. 2002, vol.62, n.1, pp. 125-133. ISSN 1519-6984.  http://dx.doi.org/10.1590/S1519-69842002000100015.

Cyclopid copepods from samples of fauna associated with aquatic macrophytes and plancton obtained in lotic and lentic environments were obtained from the upper Paraná River floodplain (in the states of Paraná and Mato Grosso do Sul, Brazil). Macrophytes were collected in homogeneous stands and washed. Plankton samples, taken from the water column surface and bottom, were obtained using a motor pump, with a 70 mm mesh plankton net for filtration. Twelve taxa of Cyclopidae were identified. Among them, Macrocyclops albidus albidus, Paracyclops chiltoni, Ectocyclops rubescens, Homocyclops ater, Eucyclops solitarius, Mesocyclops longisetus curvatus, Mesocyclops ogunnus, and Microcyclops finitimus were new finds for this floodplain. Eight species were recorded exclusively in aquatic macrophyte samples. Among these species, M. albidus albidus and M. finitimus presented greatest abundances. Only four species were recorded in plankton samples, and Thermocyclops minutus and Thermocyclops decipiens are limited to this type of habitat. Among these four species, T. minutus is the most abundant, especially in lentic habitats.

Keywords : Cyclopidae; taxonomy; phytophyle fauna; zooplankton; Paraná River.

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