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KMID : 0613820150250010016
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Journal of Life Science
2015 Volume.25 No. 1 p.16 ~ p.20
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Possibility of Natural Hybridization between Red Seabream (Pagrus major) and Blackhead Seabream (Acanthopagrus schlegeli)
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Kang Jung-Ha
Yang Sang-Geun
Kim Eun-Mi
Noh Eun-Soo
Kim Dong-Gyun
Kim Bong-Seok
Choi Tae-Jin
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Abstract
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During the storage of these two species in a large conservation tank, fertilized eggs were collected and the offspring were raised. During culturing of the offspring, individuals with mixed characteristics of these two species were observed, and 96 individuals were randomly tested using microsatellite markers applicable to both species. Among the 96 individuals, 15 individuals with mixed morphological characteristics were confirmed to be hybrids showing both of genotypes red seabream and blackhead seabream. Additionally, based on sequence analysis of mitochondrial cytochrome oxidase subunit 1 (mtDNA CO1), 81 showed 99% nucleotide sequence identity to that of black sea bream, and the remaining 15 individuals showed over 99% sequence identity to that of red seabream. So, hybrids were produced by female red seabream and male blackhead seabream. These results suggest that hybrids may form in nature between these two species if their habitats overlap due to the influence of humans or global climate change.
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KEYWORD
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Habitats overlap, hybrid, microsatellite, seabream
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