Tags

Type your tag names separated by a space and hit enter

Trait-based functional dietary analysis provides a better insight into the foraging ecology of bats.
J Anim Ecol 2019; 88(10):1587-1600JA

Abstract

The degree of trophic specialization determines the ability of predators to cope with changing foraging conditions, but in predators that prey on hundreds of species it is challenging to assess, especially when prey identity varies among predator individuals and across space and time. Here, we test the hypothesis that a bat species foraging on flying insects like moths will show ample flexibility in trophic niche, and this irrespective of phylogenetic relationships among moths, so as to cope with a high diversity of prey types that vary across seasons. We predict that individual bats will show functional dietary differences consistent with energetic requirements and hunting skills. We used DNA metabarcoding to determine the diet of 126 Mediterranean horseshoe bats (Rhinolophus euryale) from two different sites during three seasons. Simultaneously, we measured moth availability and characterized the traits of 290 moth taxa. Next, we explored the relationship between phylogeny and traits of all consumed and available moth taxa. Finally, we assessed the relationship between individual traits of bats and traits related to prey profitability, for which we used the RLQ and fourth-corner statistical techniques. Seasonality was the main factor explaining the functional dietary variation in adult bats, with moths consumed irrespective of their phylogenetic relationships. While adults consumed moths with a broad range in wing loading, body mass and echolocation detection ability, juveniles consumed slower, smaller and lighter moths, which suggests that young individuals may undergo some fitness gain and/or psychomotor learning process during which they would acquire more effective foraging skills. Our approach revealed a degree of functional flexibility in the trophic niche previously unknown for an insectivorous bat. Rhinolophus euryale consumed a wide variety of moth taxa differing in profitability throughout seasons and between ontogenetic stages. We showed the validity of trait-based approaches to gain new insights in the trophic specialization of predators consuming hundreds of species of prey.

Authors+Show Affiliations

Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Leioa, The Basque Country.Behavioural Ecology and Conservation Group, Biodiversity Research Centre, Earth and Life Institute, UCLouvain, Louvain-La-Neuve, Belgium. Department of Ecology and Genetics, University of Oulu, Oulu, Finland.Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Leioa, The Basque Country.Department of Biology, Lund University, Lund, Sweden.Section for Evolutionary Genomics, University of Copenhagen, Copenhagen, Denmark.Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Leioa, The Basque Country.Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Leioa, The Basque Country.Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Leioa, The Basque Country.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31310329

Citation

Arrizabalaga-Escudero, Aitor, et al. "Trait-based Functional Dietary Analysis Provides a Better Insight Into the Foraging Ecology of Bats." The Journal of Animal Ecology, vol. 88, no. 10, 2019, pp. 1587-1600.
Arrizabalaga-Escudero A, Merckx T, García-Baquero G, et al. Trait-based functional dietary analysis provides a better insight into the foraging ecology of bats. J Anim Ecol. 2019;88(10):1587-1600.
Arrizabalaga-Escudero, A., Merckx, T., García-Baquero, G., Wahlberg, N., Aizpurua, O., Garin, I., ... Aihartza, J. (2019). Trait-based functional dietary analysis provides a better insight into the foraging ecology of bats. The Journal of Animal Ecology, 88(10), pp. 1587-1600. doi:10.1111/1365-2656.13055.
Arrizabalaga-Escudero A, et al. Trait-based Functional Dietary Analysis Provides a Better Insight Into the Foraging Ecology of Bats. J Anim Ecol. 2019;88(10):1587-1600. PubMed PMID: 31310329.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Trait-based functional dietary analysis provides a better insight into the foraging ecology of bats. AU - Arrizabalaga-Escudero,Aitor, AU - Merckx,Thomas, AU - García-Baquero,Gonzalo, AU - Wahlberg,Niklas, AU - Aizpurua,Ostaizka, AU - Garin,Inazio, AU - Goiti,Urtzi, AU - Aihartza,Joxerra, Y1 - 2019/07/28/ PY - 2018/12/28/received PY - 2019/05/13/revised PY - 2019/05/31/accepted PY - 2019/7/17/pubmed PY - 2019/12/18/medline PY - 2019/7/17/entrez KW - Chiroptera KW - DNA metabarcoding KW - RLQ KW - fourth-corner KW - functional traits KW - moths KW - niche flexibility SP - 1587 EP - 1600 JF - The Journal of animal ecology JO - J Anim Ecol VL - 88 IS - 10 N2 - The degree of trophic specialization determines the ability of predators to cope with changing foraging conditions, but in predators that prey on hundreds of species it is challenging to assess, especially when prey identity varies among predator individuals and across space and time. Here, we test the hypothesis that a bat species foraging on flying insects like moths will show ample flexibility in trophic niche, and this irrespective of phylogenetic relationships among moths, so as to cope with a high diversity of prey types that vary across seasons. We predict that individual bats will show functional dietary differences consistent with energetic requirements and hunting skills. We used DNA metabarcoding to determine the diet of 126 Mediterranean horseshoe bats (Rhinolophus euryale) from two different sites during three seasons. Simultaneously, we measured moth availability and characterized the traits of 290 moth taxa. Next, we explored the relationship between phylogeny and traits of all consumed and available moth taxa. Finally, we assessed the relationship between individual traits of bats and traits related to prey profitability, for which we used the RLQ and fourth-corner statistical techniques. Seasonality was the main factor explaining the functional dietary variation in adult bats, with moths consumed irrespective of their phylogenetic relationships. While adults consumed moths with a broad range in wing loading, body mass and echolocation detection ability, juveniles consumed slower, smaller and lighter moths, which suggests that young individuals may undergo some fitness gain and/or psychomotor learning process during which they would acquire more effective foraging skills. Our approach revealed a degree of functional flexibility in the trophic niche previously unknown for an insectivorous bat. Rhinolophus euryale consumed a wide variety of moth taxa differing in profitability throughout seasons and between ontogenetic stages. We showed the validity of trait-based approaches to gain new insights in the trophic specialization of predators consuming hundreds of species of prey. SN - 1365-2656 UR - https://www.unboundmedicine.com/medline/citation/31310329/Trait_based_functional_dietary_analysis_provides_a_better_insight_into_the_foraging_ecology_of_bats_ L2 - https://doi.org/10.1111/1365-2656.13055 DB - PRIME DP - Unbound Medicine ER -