Genetic Diversity Between Japanese and Chinese Threeline Grunt (Parapristipoma trilineatum) Examined by Microsatellite DNA Markers

Abstract

Threeline grunt (Parapristipoma trilineatum) distributes around the southwestern coast of Japan and the east coast of China. The Chinese P. trilineatum was imported by Japan as an aquacultural seed because of its rapid growth compared with that of the Japanese P. trilineatum. The Japanese P. trilineatum differs from the Chinese P. trilineatum in some quantitative traits, and it has been suggested that these two P. trilineatum populations are genetically different. In order to identify the population structures around Japan and China, 5 local populations of the Japanese P. trilineatum and 2 local populations of the Chinese P. trilineatum were analyzed using 4 microsatellite DNA markers. Significant differences were detected between Japanese and Chinese P. trilineatum and among samples of Chinese P. trilineatum; however, among the samples of Japanese P. trilineatum, no significant differences were detected. These results suggest that care must be taken to prevent the escape of the Chinese P. trilineatum from culture cages around the Japanese coast, in order to preserve the genetically different population structures of Japanese and Chinese P. trilineatum.

Genetic diversity and parentage assignment in Dojo loach, Misgurnus anguillicaudatus based on microsatellite markers

“…This was also supported by the separate gene pools and private alleles in the three populations in this study. These genetically differentiated populations may show variation in economically important traits and produce hybrid vigour in genetic breeding programs (Kumagai et al, 2004).…”

Age and growth of threeline grunt Parapristipoma trilineatum along the south-western coast of Kii Peninsula, Japan

“…This species is also an important aquaculture fish in southern Japan and China. Chinese P. trilineatum is imported into Japan for seeding aquaculture because of its more rapid growth rate, and a genetic difference has been detected recently between Japanese and Chinese populations 5 …”

“…Chinese P. trilineatum is imported into Japan for seeding aquaculture because of its more rapid growth rate, and a genetic difference has been detected recently between Japanese and Chinese populations. 5 The Kii Peninsula, located on the Pacific coast of southern Japan, is one of the most important fishing grounds for P. trilineatum in Japan. The species has long been captured in large quantities along the south-western coast of the peninsula.…”