Journal
PEERJ
Volume 7, Issue -, Pages -Publisher
PEERJ INC
DOI: 10.7717/peerj.7169
Keywords
Moth pest; Pine forest; Bat ensemble; Foraging guild; Faecal DNA
Categories
Funding
- Basque Government [IT754-13]
- Spanish Government (MINECO) [CGL2012-38610]
- Government of the Basque Country [BFI-2011-245]
- University of the Basque Country
- UPV/EHU
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Outbreaks of the processionary moth Thaumetopoea pityocampa (Denis & Schiffer-mailer, 1775), a forest pest from the Palearctic, are thought to induce a behavioral response of bats, but up to now the moth has been seldom identified as bats' prey. Studies on bat diets suggest moths with cyclical outbreaks attract a wide array of bat species from different foraging guilds. We test whether bats feed upon T. pityocampa in the Iberian Peninsula irrespective of the predator's ecological and morphological features. We found that seven out of ten bat species belonging to different foraging guilds contained T. pityocampa DNA in their faeces and no difference was found in the foraging frequency among foraging guilds. A different size of the typical prey or the lack of fondness for moths can explain the absence of the pest in some bat species. Moreover, the intraspecific foraging frequency of T. pityocampa also changed with the sampling site likely representing differential availability of the moth. Lack of information on flight and dispersal behavior or the tympanate nature of the adult moth complicates understanding how different foraging guilds of bats prey upon the same prey. Our data suggests that T. pityocampa is a remarkable food source for many thousands of individual bats in the study area and we anticipate that more bats besides the species studied here are consuming this moth.
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