Open AccessComparative Study of the Cranio-osteology of Two Lonchophyllinae from Colombia
Author(s) -
Pere M. ParésCasanova
Publication year - 2020
Publication title -
annual research and review in biology
Language(s) - English
Resource type - Journals
ISSN - 2347-565X
DOI - 10.9734/arrb/2020/v35i1030283
Subject(s) - neurocranium , osteology , skull , biology , anatomy , zoology , subfamily , genus , procrustes analysis , mathematics , biochemistry , geometry , gene
Lonchophyllinae comprises four genera of Neotropical nectarivorous bats. Inside this subfamily the genus Lonchophylla is one of the most diverse. A total of 51 Lonchophylla skulls from Colombia (L. robusta n=34 and L. thomasi n=17) was studied by means of geometric morphometric methods with the aim to determine their morphological differential characteristics. For this purpose, viscero and neurocranium were evaluated with 12 landmarks on the dorsal aspect of left hemicranium. The two species were statistically different according to size (expressed as skull length) but also to shape (expressed as the set of Procrustes coordinates). Skulls in L. robusta were clearly bigger, with shorter braincase and longer rostra, and their zygomatic process was more latero-caudally displaced, whereas L. thomasi presented a zygomatic process which was displaced more rostrally as well longer braincases. All these detected skull form dissimilarities between both species would be explained by their different alimentary habits, but a combination of dietary analysis and morphological analysis is needed to make stronger inference about diet preferences.