All-you-can-eat buffet: A spider-specialized bat species (Myotis emarginatus) turns into a pest fly eater around cattle.

Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE

Original Publication: San Francisco, CA : Public Library of Science

Chiroptera*/parasitology ; Chiroptera*/physiology ; Predatory Behavior* ; Spiders*/physiology; Animals ; Cattle ; Feeding Behavior ; Seasons ; Diet ; Diptera/physiology ; Belgium ; Ecosystem

Determining the dietary spectrum of European insectivorous bats over time is the cornerstone of their conservation, as it will aid our understanding of foraging behavior plasticity in response to plummeting insect populations. Despite the global decline in insects, a restricted number of arthropod pest species thrive. Yet past research has overlooked the potential of European bats to suppress pests harmful to woodlands or livestock, in spite of their economic relevance. Here we investigated the diet composition, its breeding season variations and pest consumption of an insectivorous bat species (Myotis emarginatus), at the northern edge of its range (Wallonia, Belgium). We also explored the prey ecology to gain insight into the hunting strategies and foraging habitats of this bat species. We used DNA metabarcoding to amplify two COI markers within 195 bat droppings collected in June, July and August, thereby identifying 512 prey taxa predominated by Diptera, Araneae and Lepidoptera. Overall, in 97% of the samples we detected at least one of the 58 potential pest taxa, 41 of which targeting trees. The June samples were marked by a diet rich in orb-weaver spiders, in accordance with the archetypal diet of M. emarginatus bats. However, during the highly energy demanding July-August parturition and lactation period, roughly 55% of the dropping samples contained two cattle fly pests (Stomoxys calcitrans and Musca domestica). Moreover, among the 88 Diptera species preyed upon by M. emarginatus in July and August, these flies accounted for around 50% of the taxa occurrences. This plasticity-the switch from a spider-rich to a fly-rich diet-seems providential considering the dramatic ongoing drop in insect populations but this involves ensuring bat-friendly cattle farming. Our results revealed that bats widely consume pest entomofauna, thereby highlighting their potential role as allies of forest managers and farmers.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Vescera et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Prev Vet Med. 2007 Jun 15;80(1):74-81. (PMID: 17306389)
PLoS One. 2019 Jul 18;14(7):e0219265. (PMID: 31318887)
Insects. 2021 May 12;12(5):. (PMID: 34066138)
Vet Rec. 2007 Oct 20;161(16):564-5. (PMID: 17951565)
Ecol Appl. 2021 Dec;31(8):e02457. (PMID: 34529299)
Mol Ecol. 2019 Jan;28(2):232-249. (PMID: 30276912)
PLoS One. 2014 Oct 06;9(10):e109488. (PMID: 25285523)
Insects. 2020 May 11;11(5):. (PMID: 32403224)
Mol Ecol Resour. 2011 Mar;11(2):236-44. (PMID: 21429129)
Mol Ecol. 2019 Jan;28(2):391-406. (PMID: 29858539)
Biol Rev Camb Philos Soc. 2016 Nov;91(4):1081-1101. (PMID: 26202483)
Nat Biotechnol. 2019 Aug;37(8):852-857. (PMID: 31341288)
Ecol Evol. 2020 May 21;10(13):6310-6332. (PMID: 32724515)
Ann N Y Acad Sci. 2011 Mar;1223:1-38. (PMID: 21449963)
Ecology. 2023 Feb;104(2):e3903. (PMID: 36310413)
Nat Methods. 2016 Jul;13(7):581-3. (PMID: 27214047)
Science. 2011 Apr 1;332(6025):41-2. (PMID: 21454775)
Mol Ecol Resour. 2014 Nov;14(6):1160-70. (PMID: 24751203)
Ecol Evol. 2019 Mar 18;9(8):4603-4620. (PMID: 31031930)
Mol Ecol. 2018 Feb;27(3):815-825. (PMID: 29290102)
Mol Ecol. 2021 Sep;30(18):4584-4600. (PMID: 34245618)
Ecol Evol. 2020 Jul 23;10(18):9721-9739. (PMID: 33005342)
Proc Natl Acad Sci U S A. 2015 Oct 6;112(40):12438-43. (PMID: 26371304)
Biom J. 2008 Jun;50(3):346-63. (PMID: 18481363)
Mol Ecol. 2019 Jan;28(2):431-455. (PMID: 30118180)
Sci Rep. 2023 Nov 10;13(1):19576. (PMID: 37950015)
Nat Commun. 2021 Feb 23;12(1):1081. (PMID: 33623030)
Mol Ecol Resour. 2018 May;18(3):474-489. (PMID: 29288544)
Curr Biol. 2012 Jul 24;22(14):R563-4. (PMID: 22835788)
Mol Ecol Resour. 2019 Nov;19(6):1420-1432. (PMID: 31332947)
J Anim Ecol. 2019 Oct;88(10):1587-1600. (PMID: 31310329)
Parasite. 2013;20:26. (PMID: 23985165)
Biodivers Data J. 2023 Nov 14;11:e111146. (PMID: 38312339)
Sci Rep. 2021 Jul 1;11(1):13634. (PMID: 34211071)
Annu Rev Entomol. 2018 Jan 7;63:169-191. (PMID: 28968147)
Nat Commun. 2020 Mar 2;11(1):1154. (PMID: 32123172)

Date Created: 20240508 Date Completed: 20240508 Latest Revision: 20240510

20240510

PMC11078406

10.1371/journal.pone.0302028

38718094