Genetic Structure and Diversity of Two Populations of the Eastern Buzzard (Buteo japonicus japonicus and B. j. toyoshimai) in Japan
| Autor: | Fumihito Nakayama, Ken-ichi Tokita, Kazuya Nagai, Kazuto Kawakami |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Genetic diversity education.field_of_study Phylogenetic tree biology Population size Population Zoology Subspecies 010603 evolutionary biology 01 natural sciences Buzzard 03 medical and health sciences Phylogeography 030104 developmental biology biology.animal Genetic structure Animal Science and Zoology education |
| Zdroj: | Zoological Science. 36:471 |
| ISSN: | 0289-0003 |
| DOI: | 10.2108/zs190030 |
| Popis: | The nominotypical subspecies of the Eastern buzzard (Buteo japonicus japonicus; BJJ) is a common raptor inhabiting East Asia and Japan. Another subspecies, B. j. toyoshimai (BJT), inhabits only the Bonin Islands of the Ogasawara Islands, where there are only an estimated 85 breeding pairs. Because of this low population size, this subspecies is classified as endangered (class IB) in Japan. The aims of the present study were to examine genetic differences between BJJ and BJT, determine the genetic structure of the Eastern Buzzard, and assess genetic diversity within each subspecies. We sequenced 1526 bp within the control region of the mtDNA of 10 BJJ individuals during the breeding season in four sites; similarly, we sequenced 23 BJJ individuals during winter in three sites. We detected 24 haplotypes among the 33 individuals. In a similar analysis performed with 12 BJT individuals, three haplotypes were detected. The phylogenetic analysis showed that BJJ and BJT have diverged into distinct clades, supporting the genetic differentiation between the subspecies. Network and mismatch distribution analyses indicated that BJJ may have experienced population expansion. In addition, comparisons with other raptors revealed a high degree of genetic diversity in the BJJ population. In contrast, the genetic diversity of the BJT population is lower than that in other raptors. Our results indicated that it is necessary to protect BJT to prevent the reduction in its genetic diversity. |
| Databáze: | OpenAIRE |
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