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Intra- and interspecific variability of the cranial ossification sequences in Barbus sensu lato
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Intra- and interspecific variability of the cranial ossification sequences in Barbus sensu lato
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Intra- and interspecific variability of the cranial ossification sequences in Barbus sensu lato
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Journal Article
Intra- and interspecific variability of the cranial ossification sequences in Barbus sensu lato
2022
Overview
Analysis of the developmental sequence variability provides data linking the ontogeny and phylogeny of the investigated objects. Here, we present a study of cranial ossifications sequence variability in the polyphyletic group of Cyprininae
Barbus
sensu lato (Cypriniformes, Teleostei). We analyzed the intra- and interspecific variability, compared sequences of closely related and phylogenetically distant species, reconstructed an alleged ancestral sequence, and assessed the sequence variations’ evolutionary validity. As the results, we revealed that the observed sequence alterations occur due to intrinsic, likely genetic or epigenetic factors. The skull ossifications, as well as skull regions, differ in the variability level. The ossifications appearing at the intermediate phase and skull regions composing splanchnocranium are most variable. In contrast, the structures emerging at the early and late phases of skull development and regions of neurocranium are less variable. The majority of sequence alterations are non-adaptive and selectively neutral. Increase in their number accompanying the transition from intra- to interspecific and intergeneric levels resembles the accumulation of the selectively neutral genetic variations accompanying the increase of phylogenetic distance. Reconstructions of phylogenetic relationships between investigated species obtained with the analyses of sequence similarity and phylogenetic analyses using parsimony (PAUP) are consistent with the phylogenies based on molecular data and thus demonstrate the potential of sequence analysis for phylogenetic inference.
Publisher
Springer US,Springer,Springer Nature B.V
Subject
