Idade fisiológica, variação sazonal e periodicidade diurna de quatro populações de Tabanidae (Diptera) no Campus Universitário, Manaus, Brasil ^(*)

Summary

The four populations studied, Tabanus dorsiger var. dorsovittatus, T. d. var. modestus, T. importunus and Phaeotabanus cajennensis, presented low seasonal parity. The duration of the gonotrophic cycle was uniform, attaining Christopher's stage V in 120 hours after a complete blood meal. The majority of captured females that arrived to feed on an animal had stage II follicles. Only P. cajennensis was not registered throughout the year, not occuring from December to the deginning of February, at the start of the rainy season Flight activity was greates in the afternoon, and differences in activity between nulliparous and parous females was not significant (x²>0,05).