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Population size effects on the behaviour of Libellula fulva (Odonata: Libellulidae) males, a five year study

Domenii publicaţii > Biologie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: H. Beáta Nagy, Zoltán László, Szilvia Kövér, Noémi Szállassy & György Dévai

Editorial: NORTH-WESTERN JOURNAL OF ZOOLOGY, 7(1), p.39-46, 2011.

Rezumat:

We tested the hypothesis that population density alters male territorial and mating behaviour of
dragonflies. We predicted that males at higher densities fight more and mate less. During five years we studied
two Libellula fulva populations along two small lowland creeks in East Hungary. Using mark-resight
method we marked a total number of 1454 dragonfly males. Our results show that on the two study sites
there were different population densities. At higher population densities the number of matings per male decreased,
but population size had no effect on the frequency of intraspecific fights. However, the long run
study showed remarkable difference from the outcome of partial analyzes which underlines the importance
of studies overtaken through several years.

Cuvinte cheie: mark-resight, population size, intraspecific fight, mating success, Odonata.