Characteristics of the reparative regeneration of fins in the polypterid fish (Polypteridae,Actinopterygii) |
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Authors: | A I Nikiforova V A Golichenkov |
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Institution: | 1.Department of Embryology, Faculty of Biology,Moscow State University,Moscow,Russia |
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Abstract: | Epimorphic regeneration of fins was studied in different ray-finned fishes (Actinopterygii), but species representing the
phylogenetically basal lineages of the taxon have remained outside the attention of researchers. Information on the regenerative
abilities of these groups is important both for understanding the evolutionary origins of the epimorphic regeneration phenomenon
and for assessing the universality of regenerative potencies in Actinopterygii. Addressing this problem, we studied for the
first time fin regeneration in two members of the archaic family Polypteridae: the ropefish (Erpetoichthys calabaricus) and the Senegal bichir (Polypterus senegalus). Along with the ability to regenerate the bony rays of fins, widespread among Actinopterygii, polypterids show the ability
to effectively regenerate the endoskeleton and musculature of their fins. This unusual feature allows us to suggest polypterids
as new model organisms for the study of the mechanisms of vertebrate limb regeneration. |
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