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The roles of morphological traits, resource variation and resource partitioning associated with the dietary niche expansion in the fish-eating bat Myotis pilosus.
Mol Ecol 2019; 28(11):2944-2954ME

Abstract

Niche expansion and shifts are involved in the response and adaptation to environmental changes. However, it is unclear how niche breadth evolves and changes toward higher-quality resources. Myotis pilosus is both an insectivore and a piscivore. We examined the dietary composition and seasonality in M. pilosus and the closely related Myotis fimbriatus using next-generation DNA sequencing. We tested whether resource variation or resource partitioning help explain the dietary expansion from insects to fish in M. pilosus. While diet composition and diversity varied significantly between summer and autumn, the proportion of fish-eating individuals did not significantly change between seasons in M. pilosus. Dietary overlap between M. pilosus and M. fimbriatus during the same seasons was much higher than within individual species across seasons. We recorded a larger body size, hind foot length, and body mass in M. pilosus than in M. fimbriatus and other insectivorous trawling bats from China. Similar morphological differences were found between worldwide fishing bats and nonfishing trawling bats. Our results suggest that variation in insect availability or interspecific competition may not play important roles in the dietary expansion from insects to fish in M. pilosus. Myotis pilosus has morphological advantages that may help it use fish as a diet component. The morphological advantage promoting dietary niche evolution toward higher quality resources may be more important than variation in the original resource and the effects of interspecific competition.

Authors+Show Affiliations

Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China. Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China. College of Life Science, Jilin Agricultural University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China. Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, Changchun, China. College of Life Science, Jilin Agricultural University, Changchun, China.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China. Acoustic and Functional Ecology Group, Max Planck Institute for Ornithology, Seewiesen, Germany.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31063664

Citation

Chang, Yang, et al. "The Roles of Morphological Traits, Resource Variation and Resource Partitioning Associated With the Dietary Niche Expansion in the Fish-eating Bat Myotis Pilosus." Molecular Ecology, vol. 28, no. 11, 2019, pp. 2944-2954.
Chang Y, Song S, Li A, et al. The roles of morphological traits, resource variation and resource partitioning associated with the dietary niche expansion in the fish-eating bat Myotis pilosus. Mol Ecol. 2019;28(11):2944-2954.
Chang, Y., Song, S., Li, A., Zhang, Y., Li, Z., Xiao, Y., ... Lin, A. (2019). The roles of morphological traits, resource variation and resource partitioning associated with the dietary niche expansion in the fish-eating bat Myotis pilosus. Molecular Ecology, 28(11), pp. 2944-2954. doi:10.1111/mec.15127.
Chang Y, et al. The Roles of Morphological Traits, Resource Variation and Resource Partitioning Associated With the Dietary Niche Expansion in the Fish-eating Bat Myotis Pilosus. Mol Ecol. 2019;28(11):2944-2954. PubMed PMID: 31063664.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The roles of morphological traits, resource variation and resource partitioning associated with the dietary niche expansion in the fish-eating bat Myotis pilosus. AU - Chang,Yang, AU - Song,Shengjing, AU - Li,Aoqiang, AU - Zhang,Yu, AU - Li,Zhongle, AU - Xiao,Yanhong, AU - Jiang,Tinglei, AU - Feng,Jiang, AU - Lin,Aiqing, Y1 - 2019/05/31/ PY - 2018/09/18/received PY - 2019/04/27/revised PY - 2019/04/29/accepted PY - 2019/5/8/pubmed PY - 2019/5/8/medline PY - 2019/5/8/entrez KW - Chiroptera KW - dietary expansion KW - foraging advantage KW - niche breadth evolution KW - niche conservatism KW - resource quality SP - 2944 EP - 2954 JF - Molecular ecology JO - Mol. Ecol. VL - 28 IS - 11 N2 - Niche expansion and shifts are involved in the response and adaptation to environmental changes. However, it is unclear how niche breadth evolves and changes toward higher-quality resources. Myotis pilosus is both an insectivore and a piscivore. We examined the dietary composition and seasonality in M. pilosus and the closely related Myotis fimbriatus using next-generation DNA sequencing. We tested whether resource variation or resource partitioning help explain the dietary expansion from insects to fish in M. pilosus. While diet composition and diversity varied significantly between summer and autumn, the proportion of fish-eating individuals did not significantly change between seasons in M. pilosus. Dietary overlap between M. pilosus and M. fimbriatus during the same seasons was much higher than within individual species across seasons. We recorded a larger body size, hind foot length, and body mass in M. pilosus than in M. fimbriatus and other insectivorous trawling bats from China. Similar morphological differences were found between worldwide fishing bats and nonfishing trawling bats. Our results suggest that variation in insect availability or interspecific competition may not play important roles in the dietary expansion from insects to fish in M. pilosus. Myotis pilosus has morphological advantages that may help it use fish as a diet component. The morphological advantage promoting dietary niche evolution toward higher quality resources may be more important than variation in the original resource and the effects of interspecific competition. SN - 1365-294X UR - https://www.unboundmedicine.com/medline/citation/31063664/The_roles_of_morphological_traits_resource_variation_and_resource_partitioning_associated_with_the_dietary_niche_expansion_in_the_fish_eating_bat_Myotis_pilosus_ L2 - https://doi.org/10.1111/mec.15127 DB - PRIME DP - Unbound Medicine ER -