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@article{564777,
author = {Gaisler, Jiří and Zukal, Jan},
article_location = {Paris},
article_number = {4},
keywords = {Morphometry; vicariance; Myotis daubentonii; Myotis lucifugus; Leuconoe; Chiroptera},
language = {eng},
issn = {0025-1461},
journal = {Mammalia},
title = {Ecomorphometry of Myotis daubentonii and M. lucifugus (Chiroptera, Vespertilionidae) - a Palearctic-Nearctic comparison},
volume = {68},
year = {2004}
}
TY - JOUR
ID - 564777
AU - Gaisler, Jiří - Zukal, Jan
PY - 2004
TI - Ecomorphometry of Myotis daubentonii and M. lucifugus (Chiroptera, Vespertilionidae) - a Palearctic-Nearctic comparison
JF - Mammalia
VL - 68
IS - 4
SP - 275-282
EP - 275-282
PB - Muséum national d'Histoire naturelle
SN - 00251461
KW - Morphometry
KW - vicariance
KW - Myotis daubentonii
KW - Myotis lucifugus
KW - Leuconoe
KW - Chiroptera
N2 - The Palearctic Myotis daubentonii and the Nearctic Myotis lucifugus have traditionally been included into the subgenus Leuconoe due to their similar ecology and morphology. Recent molecular genetic analysis did not support this view since each of the two species was found to belong to another clade. The present paper is based on the analysis of eight external and 12 cranial characters in a sample of 158 M. daubentonii and 113 M. lucifugus, both species being represented by their nominate subspecies. ANOVA, t-test and principal component analysis (PCA) were used to test the variability and the impact of characters on interspecific differences. Significant sexual dimorphism was found mainly in M. daubentonii (females larger), hence in further analyses, males were separated from females. In both sexes, significant specific differences were found in most of the measurements, M. lucifugus having higher population averages than M. daubentonii. Only ca 50% of variability was observed on the first two PC axes in external characters but positive loadings suggested longer ears and tragi in M. lucifugus and negative loadings - longer feet and toe claws in M. daubentonii. PCA performed on cranial measurements provided ca 70% of variability in each sexe. Insignificant specific differences on the first axis, influenced mainly by length variables of the skull including toothrows and mandible, suggest adaptations to analogous foraging strategies and diets. The projection of specimens onto the second and third principal components demonstrated significant differences between the species; these two axes were dominated by breadth and height of braincase, and interorbital constriction, respectively. The difference in the shape of neurocrania suggests different phylogenetic history in each of the species. The two bats are typical vicariants but their hunting habits do not seem to be identical, M. daubentonii appears to be more adapted to glean the water surface than M.lucifugus.
ER -
GAISLER, Jiří and Jan ZUKAL. Ecomorphometry of Myotis daubentonii and M. lucifugus (Chiroptera, Vespertilionidae) - a Palearctic-Nearctic comparison. \textit{Mammalia}. Paris: Muséum national d'Histoire naturelle, 2004, vol.~68, No~4, p.~275-282. ISSN~0025-1461.
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