Räumliche und Zeitliche Aufteilung des Paarungsplatzes bei Großlibellen (Odonata, Anisoptera)

摘要: Adult dragonflies visit ponds and rivers only for mating oviposition. Oviposition sites serve as places. The male of a population partition their presence at the place either spatially or temporally. Inthe former case males perch bank stay there longer visits (e.g. Onychogomphus forcipatus , Fig. 1). In latter keep on wing all day long pay successive short to relieving one another Aeschna juncea, 2). Some Libellulid species have additionally an individual site tenacity therefore territorial behaviour. Aeschnids intermale aggressiveness causes reduction length in crowded situations resulting regulation mean density (Fig. 4).