Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil

Reproductive aspects of marine cladocerans Penilia avirostris and Pseudevadne tergestina (Crustacea, Branchiopoda) in the outer part of Guanabara Bay, Brazil

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The objective of this study was to report on some focusrite rednet r1 aspects of marine cladoceran reproduction in Guanabara Bay.Samples were collected during 1985 using a conical net with 200 mm mesh.Two species were identified: Penilia avirostris and Pseudevadne tergestina.

Both species disappeared from the plankton in winter.Two months before this short shifter rsx phenomenon, parthenogenetic females displayed reduction in brood size, while gamogenetic individuals appeared among the populations.This sequence of events is generally typical of marine cladoceran populations in temperate waters.