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Morphofunctional and geographic segregation among species of lasiurine bats (Chiroptera: Vespertilionidae) from the South American Southern Cone

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Published/Copyright: May 11, 2011
Mammalia
From the journal Volume 75 Issue 2

Abstract

Four morphologically similar species of insectivorous bats in the genus Lasiurus (Chiroptera: Vespertilionidae) regularly occur in the American Southern Cone. Three of them (Lasiurus cinereus, L. blossevillii and L. ega) are sympatric over many regions, whereas the remaining species (L. varius, closely related to L. blossevillii) is allopatric, occurring in the Patagonian Temperate Rainforest. A multivariate analysis of 14 craniodental variables for 99 specimens from the four species confirmed size separating two small species from two large ones, and revealed morphofunctional aspects of mastication segregating the two large species on the basis of differences in temporal muscle function (coronoid process height and length of rostrum). We predict ecological (trophic) differences among these lasiurines consistent with their segregation in the morphofunctional space and in combination with the sympatric vs. allopatric condition of species pairs or triads.

Keywords: Chiroptera; cranial morphology; Lasiurus; trophic partitioning
Published Online: 2011-05-11
Published in Print: 2011-05-01

©2011 by Walter de Gruyter Berlin New York

Articles in the same Issue

  1. Publisher’s note
  2. Publisher’s note
  3. REVIEW
  4. Anthropochorous mammals of the Old World in the West Indies
  5. ORIGINAL STUDIES
  6. Inter-individual variations in male and female mating bonds within a population of Eld’s deer in Hainan Island, China
  7. Age and sex determination of gaur Bos gaurus (Bovidae)
  8. Population structure of Farasan gazelle
  9. Increasing bat abundance in a major winter roost in central Poland over 30 years
  10. Predation on Cacajao ouakary and Cebus albifrons (Primates: Platyrrhini) by harpy eagles
  11. Morphofunctional and geographic segregation among species of lasiurine bats (Chiroptera: Vespertilionidae) from the South American Southern Cone
  12. Investigation of habitat preferences of Iranian jerboa (Allactaga firouzi Womochel 1978)
  13. SHORT NOTES
  14. Enlarging the knowledge on Graomys griseoflavus (Rodentia: Sigmodontinae) in Patagonia: distribution and environments
  15. The genus Rhagomys (Thomas 1917) (Rodentia, Cricetidae, Sigmodontinae) in South America: morphological considerations, geographic distribution and zoogeographic comments
  16. Prey selection and food habits of leopard (Panthera pardus fusca) in Sariska Tiger Reserve, Rajasthan, India
  17. Diet of the Eurasian otter Lutra lutra on small watercourses in Western Poland
  18. Book reviews
https://doi.org/10.1515/mamm.2011.009
Keywords for this article
Chiroptera; cranial morphology; Lasiurus; trophic partitioning

Articles in the same Issue

  1. Publisher’s note
  2. Publisher’s note
  3. REVIEW
  4. Anthropochorous mammals of the Old World in the West Indies
  5. ORIGINAL STUDIES
  6. Inter-individual variations in male and female mating bonds within a population of Eld’s deer in Hainan Island, China
  7. Age and sex determination of gaur Bos gaurus (Bovidae)
  8. Population structure of Farasan gazelle
  9. Increasing bat abundance in a major winter roost in central Poland over 30 years
  10. Predation on Cacajao ouakary and Cebus albifrons (Primates: Platyrrhini) by harpy eagles
  11. Morphofunctional and geographic segregation among species of lasiurine bats (Chiroptera: Vespertilionidae) from the South American Southern Cone
  12. Investigation of habitat preferences of Iranian jerboa (Allactaga firouzi Womochel 1978)
  13. SHORT NOTES
  14. Enlarging the knowledge on Graomys griseoflavus (Rodentia: Sigmodontinae) in Patagonia: distribution and environments
  15. The genus Rhagomys (Thomas 1917) (Rodentia, Cricetidae, Sigmodontinae) in South America: morphological considerations, geographic distribution and zoogeographic comments
  16. Prey selection and food habits of leopard (Panthera pardus fusca) in Sariska Tiger Reserve, Rajasthan, India
  17. Diet of the Eurasian otter Lutra lutra on small watercourses in Western Poland
  18. Book reviews
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