[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5657/FAS.2015.0099

A Natural Hybrid of Intergeneric Mating between a Female Pungtungia herzi and a Male Pseudorasbora parva (Cypriniformes: Cyprinidae)

Kim, Keun-Yong (Marine Eco-technology Institute, Co., Ltd.)
Ko, Myeong-Hun (Division of EcoScience, Ewha Womans University)
Cho, Sung Jang (Boryeong Freshwater Ecology Center)
Kim, Woo-Jin (Biotechnology Research Center, National Fisheries Research and Development Institute)
Son, Min Ho (Marine Eco-technology Institute, Co., Ltd.)
Bang, In-Chul (Department of Life Science and Biotechnology, Soonchunhyang University)

Publication Information

Fisheries and Aquatic Sciences / v.18, no.1, 2015 , pp. 99-107 More about this Journal

Abstract

A natural hybrid of a probable intergeneric mating between the striped shiner Pungtungia herzi and the stone morocco Pseudorasbora parva (Cypriniformes: Cyprinidae) was captured in the Geumho River, a tributary of the Nakdong River basin in Korea. Morphological characters and DNA sequences were analyzed to verify its hybrid state and identify the parentage of its parent species. The hybrid exhibited a phenotypic intermediacy between the two parent species in the number of vertebrae and the mouth shape. Out of 1,488 base pair (bp) positions of the nuclear recombination activating gene 1 gene (rag1), which has a biparental mode of inheritance, 41-bp substitutions were detected between the two parent species, whereas an electropherogram of the hybrid displayed polymorphic double peaks at all of the base positions, along with one additional one, strongly indicating its hybrid state. Meanwhile, sequence comparison of the mitochondrial cytochrome b gene (mt-cyb) (1,140 bp), which has a maternal mode of inheritance, showed only 5-22-bp differences (97.6-99.5% identities) between the hybrid and Pu. herzi, but as many as 158-168-bp differences (85.2-86.1% identities) between the hybrid and Ps. parva, clearly indicating Pu. herzi as the maternal species. Thus, combined analyses of independent data sets (i.e., morphology and nuclear and mitochondrial DNA sequences) offered convincing evidence for the hybrid state of a naturally occurring hybrid resulting from intergeneric mating between a female Pu. herzi and a male Ps. parva.

Keywords

DNA sequences; Morphology; Natural hybrid; Pseudorasbora parva; Pungtungia herzi;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)

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