Informace o publikaci

Incongruences between morphology and molecular phylogeny provide an insight into the diversification of the Crocidura poensis species complex

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VOET Inessa DENYS Christiane COLYN Marc LALIS Aude KONEČNÝ Adam DELAPRE Arnaud NICOLAS-COLIN Violaine CORNETTE Raphael

Rok publikování 2022
Druh Článek v odborném periodiku
Časopis / Zdroj Scientific Reports
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://www.nature.com/articles/s41598-022-12615-5
Doi http://dx.doi.org/10.1038/s41598-022-12615-5
Klíčová slova BODY-SIZE; EVOLUTION; SIGNAL; COVARIATION; SHAPE; ALLOMETRY; MAMMALIA; ECOLOGY; SKULL
Popis Untangling the factors of morphological evolution has long held a central role in the study of evolutionary biology. Extant speciose clades that have only recently diverged are ideal study subjects, as they allow the examination of rapid morphological variation in a phylogenetic context, providing insights into a clade’s evolution. Here, we focus on skull morphological variability in a widely distributed shrew species complex, the Crocidura poensis species complex. The relative effects of taxonomy, size, geography, climate and habitat on skull form were tested, as well as the presence of a phylogenetic signal. Taxonomy was the best predictor of skull size and shape, but surprisingly both size and shape exhibited no significant phylogenetic signal. This paper describes one of the few cases within a mammal clade where morphological evolution does not match the phylogeny. The second strongest predictor for shape variation was size, emphasizing that allometry can represent an easily accessed source of morphological variability within complexes of cryptic species. Taking into account species relatedness, habitat preferences, geographical distribution and differences in skull form, our results lean in favor of a parapatric speciation model within this complex of species, where divergence occurred along an ecological gradient, rather than a geographic barrier.

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