Produção Nacional
Ciclomorfose em Bosmina (Crustacea, Cladocera) no Lago Paranoá, Brasília
1989; Sociedade Brasileira de Zoologia; Volume: 6; Issue: 1 Linguagem: Inglês
10.1590/s0101-81751989000100006
ISSN1806-969X
AutoresLourdes M. A. Elmoor-Loureiro,
Tópico(s)Environmental Toxicology and Ecotoxicology
Resumoln order to verify the existence of seasonal variations in morphology of Bosmina longirostris and Bosmina hagmannL samples were taken from Paranoá Lake (Brasília, DF) during 1983.Body length and breadth, antennule, mucro and eye diameter were measured.Alometry rates were also calculated.It was verified that throughout the year both Bosmina species presented variation involving the five measures.The measures, except the antennule and mucro of B_ longirostris, depend, at least partially, on the size ofthe individual and, therefore, on the age structure of the population.The antennule and mucro variations of B_ hagmanni were strongly related to alometry rates.For B. longirostris the antennule and mucro variations appeared to be related to phenomena in an embryonic phase.
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