The present study aimed to identify the Cladocera species present in 15 samples of zooplankton, taken occasionally between 1981 and 2001, from the Counties of Recife, Jaboatão dos Guararapes, Paulista e Escada (state of Pernambuco, Brazil). In total, 32 species were reported; 10 of them represent first records, which increased to 51 the number of species known to occur in Pernambuco state. The highest cladoceran species richness was observed in water bodies where macrophytes were more abundant and with more samples available.

Aim: the present study aimed to identify the cladoceran species taken from the gut content of fishes sampled from Vila Bela da Santíssima Trindade (Mato Grosso); Methods: the gut content of 14 individual fishes were analyzed; from each one, at least 100 individual cladocerans were identified; Results: A total of 25 cladoceran species were registered, providing the first species list for Guaporé River Basin, seven of them reported from Mato Grosso State for the first time; Conclusions: Besides the information on Cladoceran occurrence, the study point out the importance of this organisms in the aquatic food web of Guaporé Basin.