Forest microsite influence on captures of flying Hymenoptera by yellow pan traps

BERNASCHINI, MARÍA L.; ROSSI ROTONDI, BRUNO A.; SALVO, ADRIANA; MUSICANTE, MARIANA L.

ENTOMOLOGIA GENERALIS

E SCHWEIZERBARTSCHE VERLAGS

Lugar: Stuttgart; Año: 2019 vol. 39 p. 193 - 203

0171-8177

Insects in the order Hymenoptera are considered useful indicators of environmental changes, and yellow pantraps constitute one of the most used sampling methods to collect them. Here, we analyze the influence of microsite featureson the flying Hymenoptera communities obtained using yellow pan-traps, through a short time of exposure in threemicrosites of fragmented forest: interior (I), north (NB) and south facing (SB) borders. We compared values of richness andabundance of total Hymenoptera, as well as parasitoids, predators and pollinators among microsites using rarefaction andextrapolation curves and Generalized Linear Mixed Models. Number of individuals obtained in NB were two-fold and 74%greater than the ones obtained in SB and in I respectively, whereas estimated total species richness was higher in the forestinterior, followed by SB and ultimately by NB. Parasitoids and predators were more frequently trapped in NB. Even whendata were obtained through a short period of sampling in five sampling sites, our results emphasize the need to consider theinfluence of the location (border vs interior) and the geographic orientation of edges in which pan-traps are placed in orderto correctly assess the abundance of flying Hymenoptera in fragmented forest landscapes