クメ　マナブ   Manabu Kume   久米　学    所属   石巻専修大学  理工学部    職種   准教授
言語種別	英語
発行・発表の年月	2021/04/19
形態種別	研究論文（学術雑誌）
査読	査読あり
標題	Genetic basis for variation in the number of cephalic pores in a hybrid zone between closely related species of goby, Gymnogobius breunigii and Gymnogobius castaneus
執筆形態	未選択
掲載誌名	Biological Journal of the Linnean Society
出版社・発行元	Oxford University Press (OUP)
巻・号・頁	133(1),pp.143-154
著者・共著者	Ryo Kakioka,Manabu Kume,Asano Ishikawa,Satoshi Ansai,Takuya K Hosoki,Yo Y Yamasaki,Atsushi J Nagano,Atsushi Toyoda,Jun Kitano
概要	<title>Abstract</title> Populations or species exploiting different habitats can differ in sensory perception as a result of divergent adaptation. In bony fish, the water current is perceived via neuromasts, the end organ of the lateral line system. Although fish in different habitats are known to vary in neuromasts, we know little about the genetic basis for such variation. Here, we investigate the genetic basis for variation in supraorbital neuromasts in a hybrid zone between the Japanese gobies Gymnogobius breunigii and Gymnogobius castaneus. The former has supraorbital canal neuromasts with six cephalic pores, whereas the latter has only superficial neuromasts with no canals or pores in the supraorbital region. Our genomic analysis showed that G. breunigii and G. castaneus occur mainly in the lower and mid/upper reaches, respectively. In a river in northern Japan, hybrids were found at the sites between the habitats of the two species. These hybrids exhibited anomalies of cephalic pores. Using this hybrid zone, we conducted genome-wide association studies and identified one locus significantly associated with the number of pores. Genomic cline analysis in the hybrid zone demonstrated that this locus exhibited a higher introgression rate compared with the genomic background, indicating the possibility of adaptive introgression.
DOI	10.1093/biolinnean/blab033
ISSN	0024-4066/1095-8312
PermalinkURL	http://academic.oup.com/biolinnean/article-pdf/133/1/143/37164705/blab033.pdf