Genetic Variation in the Asian Shore Crab Hemigrapsus sanguineus in Korean Coastal Waters as Inferred from Mitochondrial DNA Sequences

Abstract

Genetic variation in the Asian shore crab Hemigrapsus sanguineus was determined from partial mitochondrial DNA (mtDNA) sequences of the cytochrome b (Cytb) gene. Samples included 143 crabs from six localities along three coastlines in South Korea. A nucleotide sequence analysis revealed 38 variable sites in a 470-bp sequence, which defined 37 haplotypes. The haplotypes were not associated geographically and had a shallow genealogy. Pairwise F ST tests and a two-dimensional scaling analysis revealed no significant genetic differentiation among most of the populations. The low pairwise comparison values, but significant genetic differentiation of a northeastern population from all other populations, might have been influenced by a restriction in gene flow caused by hydrographic conditions such as ocean boundaries. The high haplotype diversity, low nucleotide diversity, and time since H. sanguineus expansion in Korean coastal waters indicate rapid population growth and a recent, sudden expansion in the Late Pleistocene.

Genetic Diversity and Gene Flow Patterns in Pollicipes mitella in Korea Inferred from Mitochondrial DNA Sequence Analysis

“…Some marine species appear to be panmictic across large geographic ranges (Lessios et al, 2003;Klanten et al, 2007;Horne et al, 2008;Reece et al, 2010), whereas others exhibit genetic heterogeneity on a small scale (Barber et al, 2006;Gerlach et al, 2007). These genetically driven mechanisms are affected by geography, and may be influenced by dispersal and self-recruitment that are determined by oceanographic features such as sea currents, hydrological conditions, and physical barriers (Doyle et al, 1993;Hsieh et al, 2010;Hong et al, 2012). Sea currents can have dynamic effects on the population genetics of marine invertebrates, and ocean currents are responsible for planktonic larvae dispersion on a large scale.…”

Mitochondrial and microsatellite DNA analyses showed comparative genetic diversity between parent and offspring populations of Korean black rockfish in a hatchery facility

“…Molecular markers have proven to be excellent indicators of genetic variation within and between populations for many fishery animals (Kitanish et al, 2007;An et al, 2011a,b;Yoon et al, 2011;Choi and Kim, 2012;Han et al, 2012;Hong et al, 2012;Lee and Hur, 2012). Microsatellite DNA markers, in particular, have relatively high levels of polymorphism.…”

Comparison of genetic diversity between wild-caught broodstock and hatchery-produced offspring populations of the vulnerable Korean kelp grouper (Epinephelus bruneus) by microsatellites

“…Therefore, it is necessary to investigate genetic variability in these wild-caught broodstock and hatchery-produced offspring populations of kelp grouper to obtain well-founded scientific data fundamental to the success of aquaculture development strategies. Molecular markers have proven to be an exceptional indicator of genetic variation within and between populations of many fishery animals (Choi and Kim, 2012;Hong et al, 2012;Lee and Hur, 2012). Among the available genetic markers, microsatellite DNA markers or short tandem repeats (STRs) are well-known hypervariable genetic markers that have been successfully used in genetic monitoring of the changes between wild and hatchery populations in many marine species (An et al, 2012b;Han et al, 2012;Kim et al, 2013).…”