TY  - JOUR
A1  - Vogel, Sebastian
A1  - Prinzing, Andreas
A1  - Bußler, Heinz
A1  - Müller, Jörg
A1  - Schmidt, Stefan
A1  - Thorn, Simon
T1  - Abundance, not diversity, of host beetle communities determines abundance and diversity of parasitoids in deadwood
JF  - Ecology and Evolution
N2  - Most parasites and parasitoids are adapted to overcome defense mechanisms of their specific hosts and hence colonize a narrow range of host species. Accordingly, an increase in host functional or phylogenetic dissimilarity is expected to increase the species diversity of parasitoids. However, the local diversity of parasitoids may be driven by the accessibility and detectability of hosts, both increasing with increasing host abundance. Yet, the relative importance of these two mechanisms remains unclear. We parallelly reared communities of saproxylic beetle as potential hosts and associated parasitoid Hymenoptera from experimentally felled trees. The dissimilarity of beetle communities was inferred from distances in seven functional traits and from their evolutionary ancestry. We tested the effect of host abundance, species richness, functional, and phylogenetic dissimilarities on the abundance, species richness, and Shannon diversity of parasitoids. Our results showed an increase of abundance, species richness, and Shannon diversity of parasitoids with increasing beetle abundance. Additionally, abundance of parasitoids increased with increasing species richness of beetles. However, functional and phylogenetic dissimilarity showed no effect on the diversity of parasitoids. Our results suggest that the local diversity of parasitoids, of ephemeral and hidden resources like saproxylic beetles, is highest when resources are abundant and thereby detectable and accessible. Hence, in some cases, resources do not need to be diverse to promote parasitoid diversity.
KW  - barcoding
KW  - deadwood
KW  - experiment
KW  - host–parasitoid interaction
KW  - natural enemy
KW  - specialization
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-238892
VL  - 11
IS  - 11
SP  - 6881
EP  - 6888
ER  -