The diet of the notch-eared bat (Myotis emarginatus) across the Iberian Peninsula analysed by amplicon metabarcoding

Myotis emarginatus is one of the few bats known to feed mostly on spiders. In order to study the importance of this type of prey, we analysed the species’ diet in five colonies across the Iberian Peninsula using amplicon metabarcoding in order to describe its composition at the species level, and an...

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Bibliographic Details
Published in:Hystrix 2019-01, Vol.30 (1), p.59
Main Authors: Vallejo, Nerea, Aihartza, Joxerra, Goiti, Urtzi, Arrizabalaga-Escudero, Aitor, Flaquer, Carles, Puig, Xavi, Aldasoro, Miren, Baroja, Unai, Garin, Inazio
Format: Article
Language:English
Subjects:
Chiroptera
Colonies
Diet
Myotis emarginatus
Prey
Species
Stomoxys calcitrans
Web building
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Summary:Myotis emarginatus is one of the few bats known to feed mostly on spiders. In order to study the importance of this type of prey, we analysed the species’ diet in five colonies across the Iberian Peninsula using amplicon metabarcoding in order to describe its composition at the species level, and analyse its geographic variability within the peninsula. We identified 138 prey species, belonging to 11 different arthropod orders. Among them, 45 species of spiders were identified, mostly of the orb-web building guild, as consumed by 82 out of 106 studied bats, corresponding to every colony and season sampled. Besides, lepidopterans and dipterans were also consumed in every colony. Among the latter, the stable fly Stomoxys calcitrans was especially important in two of the colonies, showing that M. emarginatus can also opportunistically exploit different resources or foraging grounds, such as cattle sheds, which affects the composition of its diet also at ordinal level of prey.
ISSN:0394-1914
1825-5272
DOI:10.4404/hystrix-00189-2019