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Title

Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. II. Integration and levels of multivariate fluctuating asymmetry across a geographical range

AuthorsJuste, Javier ; López-González, C.; Strauss, R.E.
KeywordsEidolon helvum
fluctuating asymmetry
fruit bats
geographical variation
Gulf of Guinea
Rousettus egyptiacus
Issue DateJul-2001
PublisherBlackwell Publishing
CitationJ. Evolutionary Biology, 14:672-680(2001)
AbstractUsing a set of cranial morphometric characters, trends of variation in multivariate fluctuating asymmetry were evaluated and compared in popu- lations of African fruit bats Rousettus egyptiacus and Eidolon helvum from the Gulf of Guinea islands, and the adjacent mainland. Levels of asymmetry were compared across populations and species, and significant differences were found in both comparisons. Differences coincided with species-specific patterns of morphological and genetic differentiation. Concordance of corre- lation matrices of asymmetry was also compared. Results were significant; concordance is hypothesized to be a by-product of developmental processes that produce the ‘fox-like’ morphology shared by these species. Consistency of asymmetry patterns suggests that the developmental pathway producing it is highly canalized. A prediction of the above hypothesis is that a radical change in the ‘fox-like’ structural pattern would result in breakage of the asymmetry parameter associated with it.
Publisher version (URL)http://dx.doi.org/10.1046/j.1420-9101.2001.00299.x
URIhttp://hdl.handle.net/10261/49200
DOI10.1046/j.1420-9101.2001.00299.x
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