1. Structure of insect community in the fungus Inonotus radiatus in riparian boreal forests.
- Author
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Jonsell, Mats, González Alonso, Clara, Forshage, Mattias, van Achterberg, Cees, and Komonen, Atte
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INSECT communities , *INONOTUS , *RIPARIAN forests , *POLYPORACEAE , *TINEIDAE , *FUNGIVORES , *CIIDAE , *SPIDER beetles ,HOSTS of parasitoids - Abstract
Basidiomes of polypore fungi host many insects. Yet systematic information about insect assemblages from most fungal species is lacking. We studied the insect community associated with the wood-decaying fungusInonotus radiatus(Sowerby: Fr.) P. Karst. (Hymenochaetales). More specifically, we studied the effect of successional stage and weight of basidiomes, as well as shore exposition (north or south), on species richness and composition, as well as occurrence and abundance of the most abundant fungivores. Basidiomes were collected from riparian forests at five lakes in Sweden. Insects were reared out from the basidiomes in the laboratory. A total of 5645 adult insect individuals of 117 taxa were obtained. Among these, 2782 specimens of 36 taxa useInonotus radiatusbasidiomes as breeding habitat. Eight species of parasitic wasps were new to Sweden. The most abundant fungivore wasEnnearthron cornutum(Ciidae), which is a generalist breeding in many polypore species. Based on our material and literature, the melandryid beetlesAbdera affinisandA. flexuosaseem to be specialists on the order Hymenochaetales. Other frequent fungivores wereDorcatoma dresdensis(Ptinidae), and the lepidopteransArchinemapogon yildizae, Nemapogon cloacellusandN. picarellus(Tineidae). The parasitoid community associated with the tineid moths was similar to the community associated with the other polypore species in the order Polyporales. In contrast, the parasitoids associated withDorcatoma(and/orAbdera) were different from the other Polyporales species, suggesting that the fungal host species is more important for these parasitoid species than the beetle host species itself. The most abundant and frequent parasitoids were the braconidsDiospilus disparandColastes fritzeni, which both parasitiseDorcatoma. Species richness was significantly smaller in fresh than in more decayed basidiomes, but species composition did not differ. There was no difference in species composition or richness between north and south shorelines. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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