نتایج جستجو برای: dragonfly
تعداد نتایج: 933 فیلتر نتایج به سال:
Abstract Animals which migrate by flying should be subject to selection for optimal wing characteristics that maximize energy efficiency during migration. We investigated shape and area variation in the Globe Skimmer Dragonfly Pantala flavescens , has longest known migration of any insect. Wing differences between individuals southern Peninsular India, migrating at a stop-over site on Maldives,...
A total of 12 dragonfly species were recorded at Vlačine Reservoir in the Dinaric Western Balkan region (ER 5) in Croatia. Habitat conditions, i.e. vegetation structure and physico-chemical water properties of the reservoir, are presented and discussed. Habitat conditions were suitable for life cycle completion of Mediterranean species such as Lindenia tetraphylla and Selysiothemis nigra. Exuvi...
The order Odonata comprises many predaceous species that inhabit aquatic systems, and a few that are restricted to flowing waters. Cordulegaster boltoni is a widespread Odonata in Europe, which usually inhabits small lotic systems. In this study we analysed the gut contents of C. boltoni immature stages, collected in the Rocchetta Tanaro Natural Park (Italy, Piemonte). Two hundred and eleven in...
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