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Reproductive isolation between sympatric Anguilla japonica and Anguilla marmorata
Author(s) -
Chow S.,
Kurogi H.,
Yamamoto T.,
Tomoda T.,
Mochioka N.,
Shirotori F.,
Yoshinaga T.,
Ambe D.,
Okazaki M.,
Nagai S.,
Yanagimoto T.
Publication year - 2017
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.13483
Subject(s) - biology , japonica , japanese eel , sympatric speciation , reproductive isolation , carangidae , zoology , ecology , fishery , botany , population , demography , sociology , fish <actinopterygii>
Species‐specific restriction fragment length polymorphism in the intron of the androgen receptor gene ( ar5 ) was found in glass to silver‐stage individuals of Anguilla japonica ( n = 51) and A. marmorata ( n = 21). The sequence analysis of 16S rDNA from 328 anguillid leptocephali collected in the North Equatorial Current of the western North Pacific Ocean revealed the specimens to be A. japonica ( n = 194), A. marmorata ( n = 128), A. bicolor pacifica ( n = 5) and A. luzonensis ( n = 1). All leptocephali of A. japonica and A. marmorata were monomorphic and did not share an allele at the ar5 locus, indicating that the two species are reproductively isolated.