Intraspecific polymorphism of mtDNA in Sakhalin taimen Parahucho perryi

Conservation genetics assessment and phylogenetic relationships of critically endangeredHucho bleekeriin China

“…Freshwater fish are particularly susceptible to biodiversity loss because they often exist naturally in small, fragmented populations vulnerable to habitat degradation, pollution, and the introduction of exotic species (Hughes et al., ). In recent years, the genetic diversity of the genus Hucho has been evaluated with microsatellite markers (Kuang et al., ; Liu et al., ), mtDNA sequence (Geist et al., ; Weiss et al., ), and a restriction fragment length polymorphism (Skurikhina et al., ). Zhang et al.…”

“…Freshwater fish are particularly susceptible to biodiversity loss because they often exist naturally in small, fragmented populations vulnerable to habitat degradation, pollution, and the introduction of exotic species (Hughes et al, 2012). In recent years, the genetic diversity of the genus Hucho has been evaluated with microsatellite markers (Kuang et al, 2009;Liu et al, 2011), mtDNA sequence (Geist et al, 2009;Weiss et al, 2011), and a restriction fragment length polymorphism (Skurikhina et al, 2013). Zhang et al (2014a) found that the number of repeats in the mitochondrial DNA control region (four) in H. bleekeri sampled from the Taibai River differed significantly from the 6-7 tandem repeats in the fish sampled from the Markehe River.…”

“…Microsatellite markers and mitochondrial DNA (mtDNA) are reliable molecular tools with which to evaluate genetic diversity, and are especially useful for identifying endangered populations (Farah et al., ; Gary et al., ). The genetic diversity of some other Hucho species has been successfully analyzed with molecular markers (Geist et al., ; Kuang et al., ; Liu et al., ; Weiss et al., ; Skurikhina et al., ). Because of the endangered status of H. bleekeri and our current understanding of the need to conserve genetic diversity, in this study we first investigated the levels of genetic diversity, the population structure, and the phylogenetic relationships of a small wild population of H. bleekeri (n = 43 individuals) in the Taibai River, to identify conservation strategies that will ensure population enhancement and controlled breeding.…”

Salmonidae Genome: Features, Evolutionary and Phylogenetic Characteristics

“…Five phylogenetic haplotype groups were revealed, one (Beringian) associated to the northern form of Dolly Varden and four (Arctic, Atlantic, Siberian, and Acadian) associated with Arctic char. Extensive research into charr mtDNA has substantially extended our understanding of their genetic diversity and evolutionary linkages in the Pacific basin [ 70 , 184 , 246 , 294 , 295 , 296 , 297 , 298 , 299 , 300 , 301 , 302 , 303 , 304 , 305 , 306 , 307 , 308 ], in Eastern Siberia [ 171 , 173 ], and in the North American Arctic [ 170 ]. A revision of the systematics of the genus has been proposed, involving consideration of monophyletic groups identified by mtDNA analysis as separate species, in particular, S. taranetzi [ 300 ], which includes Asian and North American loach with Arctic group haplotypes [ 288 , 291 , 300 ].…”