PMID: 25792787Nov 1, 2006Paper

Establishment of hybrid-derived offspring populations in the Ohomopterus ground beetles through unidirectional hybridization

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
Zhi-Hui SuSyozo Osawa

Abstract

An approach to deduce the mechanism of stabilization of the hybrid-derived populations in the Ohomopterus ground beetles has been made by comparative studies on the phylogenetic trees of the mitochondrial and nuclear DNA. A phylogenetic tree based on the internal transcribed spacer (ITS) of nuclear ribosomal gene roughly reflects the relations of morphological species group, while mitochondrial NADH dehydrogenase subunit 5 (ND5) gene shows a considerable different topology on the tree; there exist several geographically-linked lineages, most of which consist of more than one species. These results suggest that the replacement of mitochondria has occurred widely in the Ohomopterus species. In most cases, hybridization is unidirectional, i.e., the species A (♂) hybridized with another species B (♀) and not vice versa, with accompanied replacement of mitochondria of A by those of B. The results also suggest that partial or complete occupation of the distribution territory by a hybrid-derived morphological species. The morphological appearance of the resultant hybrid-derivatives are recognized as that of the original species A. Emergence of a morphological new species from a hybrid-derived population has been exemplified.

References

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Jul 24, 2002·Nucleic Acids Research·Kazutaka KatohTakashi Miyata

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Citations

Nov 13, 2018·Proceedings of the Japan Academy. Series B, Physical and Biological Sciences·Yûki ImuraSyozo Osawa

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