Palate Variation and Evolution in New World Leaf-Nosed and Old World Fruit Bats (Order Chiroptera)

Title

Palate Variation and Evolution in New World Leaf-Nosed and Old World Fruit Bats (Order Chiroptera)

Creator

Sorensen D W; Butkus C; Cooper L N; Cretekos C J; Rasweiler J J; Sears K E

Publisher

Evolutionary Biology

Date

2014
2014-12

Description

Two bat families, the leaf-nosed (Phyllostomidae) and fruit bats (Pteropodidae), have independently evolved the ability to consume plant resources. However, despite their similar ages, species richness and the strong selective pressures placed on the evolution of skull shape by plant-based foods, phyllostomids display more craniofacial diversity than pteropodids. In this study, we used morphometrics to investigate the distribution of palate variation and the evolution of palate diversity in these groups. We focused on the palate because evolutionary alterations in palate morphology are thought to underlie much feeding specialization in bats. We hypothesize that the distribution of palate variation differs in phyllostomids and pteropodids, and that the rate of palate evolution is higher in phyllostomids than pteropodids. The results suggest that the overall level of palate integration is higher in adult populations of pteropodids than phyllostomids but that the distribution of palate variation is otherwise generally conserved among phyllostomids and pteropodids. Furthermore, the results are consistent with these differences in palate integration likely having a developmental basis. The results also suggest that palate evolution has occurred significantly more rapidly in phyllostomids than pteropodids. These findings are consistent with a scenario in which the greater integration of the pteropodid palate has limited its evolvability.

Subject

cranial shape; Craniofacial; evolution; Evolutionary Biology; feeding-behavior; fluctuating asymmetry; food hardness; fossil; geometric; Integration; Modularity; Modularity; morphological integration; Morphometrics; Morphometrics; patterns; Phyllostomid; Pteropodid; record; skull morphology

Format

Journal Article

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Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

595-605

Issue

4

Volume

41

Citation

Sorensen D W; Butkus C; Cooper L N; Cretekos C J; Rasweiler J J; Sears K E, “Palate Variation and Evolution in New World Leaf-Nosed and Old World Fruit Bats (Order Chiroptera),” NEOMED Bibliography Database, accessed March 5, 2021, https://neomed.omeka.net/items/show/7204.

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