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Genetic structure in species with shallow evolutionary lineages: A case study of the rare flatfish Verasper variegatus

文献类型: 外文期刊

作者: Sekino, Masashi 1 ; Saitoh, Kenji 2 ; Shimizu, Daisuke 3 ; Wada, Toshihiro 4 ; Kamiyama, Kyoichi 5 ; Gambe, Somei 6 ;

作者机构: 1.Fisheries Res Agcy, Tohoku Natl Fisheries Res Inst, Shiogama, Miyagi 9850001, Japan

2.Fisheries Res Agcy, Natl Res Inst Fisheries Sci, Kanagawa 2368648, Japan

3.Fisheries Res Agcy, Miyako Stn, Natl Stn Stock Enhancement, Miyako, Iwate 0270097, Japan

4.Fukushima Prefectural Fisheries Expt Stn, Iwaki, Fukushima 9700316, Japan

5.Fukushima Prefectural Fisheries Expt Stn, Souma Branch, Fukushima 9760022, Japan

6.Miyagi Prefectural Govt, Sendai, Miyagi 9808570, Japan

7.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Shandong, Peoples R China

8.Fisheries Res Agcy, Seikai Natl Fisheries Res Inst, Nagasaki 8512213, Japan

关键词: Bottleneck;Microsatellite;Mitochondrial DNA;Phylogeography;Population genetics;Spotted halibut

期刊名称:CONSERVATION GENETICS ( 影响因子:2.538; 五年影响因子:2.32 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: We examined the genetic population divergence of the spotted halibut Verasper variegatus. A previous report suggested two conservation units for this species along the Japanese Pacific coast. Extending the coverage of the genomes (29 microsatellites and three mitochondrial DNA segments) revealed hitherto-undetected genetic population boundaries. We screened population samples from the major habitats along the Japanese coast and the Yellow Sea coast (East Asian Continent). Significant genetic differentiation was found in every comparison between the habitats. In most cases, the nuclear and mitochondrial population divergences were incongruent, most likely caused by differences between the two genomes in the effects of genetic drift after recent population isolation and bottleneck events. We discuss the ecological and evolutionary mechanisms of the genetic structure as well as the units of conservation. The present study illustrates the merits of wider coverage of genomes in genetic population analysis especially for species with a shallow population history.

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