Genetic variations and expansion of whiskered velvet shrimp (Metapenaeopsis barbata) off China and Taiwan inferred from intron sequence

Population structure of Hirundichthys oxycephalus in the northwestern Pacific inferred from mitochondrial cytochrome oxidase I gene

“…However, the interrelationship of either stock to any sampling locality, the Kuroshio, or other minor currents was not detected. Similar results have also been observed in other marine fishes in the northwestern Pacific (Chiou and Lee 2004;Liu et al 2007;Han et al 2008a,b;Liu et al 2009;Wu et al 2009;Han et al 2010;Iida et al 2010;Shen et al 2011;Chu et al 2012;Ju et al 2013), in which major ocean current patterns are not good predictors of gene flow. On the other hand, historical factors such as Pleistocene glaciations might account for the genetic pattern of H. oxycephalus.…”

“…The fit to an expansion model might be due to its recent colonization from warm refuge after Pleistocene cooling had occurred (Díaz-Jaimes et al 2006). A similar episode was also observed among dolphinfish, yellowfin tuna, and whiskered velvet shrimp (Díaz-Jaimes et al 2006;Dammannagoda et al 2008;Chu et al 2012).…”

“…The strong and constant Kuroshio Current might facilitate the gene flow of species distributed within the northwestern Pacific Ocean and result in a weak genetic structure (Hohenlohe 2004). This may account for the low genetic differentiation of H. oxycephalus and the other species distributed in the range of the Kuroshio Current, including albacore (Wu et al 2009), Japanese eel (Han et al 2010), Japanese anchovy (Liu et al 2006), crocker (Han et al 2008a,b), mackerel (Chiou and Lee 2004), mullet (Liu et al 2007;Liu et al 2009;Shen et al 2011), goby (Iida et al 2010;Ju et al 2013), and whiskered velvet shrimp (Chu et al 2012).…”

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“…A pattern of genetic diversity in the population of V. litterata living along the Thailand coast presented high haplotype diversity but a low nucleotide diversity. This pattern was reported as a typical character of genetic variations of marine species (Chu et al 2012;Kong et al 2010). Regarding the population genetic theory, this pattern can be generated by an accumulation of new mutations in a rapidly expanding population (Watterson 1984).…”

Isolation and Characterization of Polymorphic Microsatellite Loci from Metapenaeopsis barbata Using PCR-Based Isolation of Microsatellite Arrays (PIMA)

“…The life history, morphometric variation and fishery biology of these shrimps have been well studied [2,5,7–10]. Recently, Chu [11,12] investigated the population structure and historical demography of the whiskered velvet shrimp using one intron of elongation factor-1α gene and the mitochondrial DNA control region. For practicing conservation and understanding the genetic structuring across populations, codominant and highly polymorphic molecular markers are desired.…”