Abstract
Abstract
Parasitism on dragonflies (Odonata) may become the least attention in most entomological studies in Indonesia, since it possesses much indirect effect to human being. The odonata parasitism is caused by the infestation of water mite larvae onto the body of adult dragonflies. In this paper we discuss the result of odonatological survey we did at two tributaries in Biology Education and Research Forest (BERF), Universitas Andalas. The survey had been conducted between August to November 2019. We recorded 17 dragonfly species bound to these tributaries, 12 Zygopterans and 5 Anispterans. Water mite infestation was observed to happen on four Zygopteran species and one Anisoptera. The highest prevalence was shown by Orthetrum testaceum (100%), followed by Euphaea variegata (16.67%), Prodasineura verticalis (14.29%), Euphaea modigliani (3.57%) and Heliocypha angusta angusta (0.85%). In overall, the prevalence on community level reached 3.29%. The parasitism case observed in the tributaries of BERF can be classified as low incident, each infested odonate only contained a single water mite except for O. testaceum with two water mites. We presume that habitat condition may contribute to the rate of dragonfly parasitism, where a good habitat help lowering the parasitism incident.