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- Title
Detection and morphological characteristics of “Kunimasu” (<italic>Oncorhynchus kawamurae</italic>)/”Himemasu” (<italic>O. nerka</italic>) hybrids in Lake Motosu, Yamanashi Prefecture, Japan.
- Authors
Nakayama, Kouji; Tohkairin, Akira; Yoshikawa, Akane; Nakabo, Tetsuji
- Abstract
A recently discovered transplanted population of “Kunimasu” (<italic>Oncorhynchus kawamurae</italic>) in Lake Saiko, Yamanashi Prefecture, Japan, extinct in its original habitat, has been reported as almost never hybridizing with sympatric “Himemasu” (<italic>O. nerka</italic>). However, analyses of microsatellite and mitochondrial DNA markers disclosed extensive hybridization between these two species in Lake Motosu, Yamanashi Prefecture, a second lake to which Kunimasu had been transplanted. The rates of purebred Kunimasu, Kunimasu/Himemasu hybrids and purebred Himemasu were 0 %, 64.3 % and 35.7 %, respectively, and hybrid specimens had intermediate numbers of pyloric caeca and gill rakers compared with the parental species.
- Subjects
ONCORHYNCHUS; FISH hybridization; FISH morphology; FISH habitats; ICHTHYOLOGY
- Publication
Ichthyological Research, 2018, Vol 65, Issue 2, p270
- ISSN
1341-8998
- Publication type
Article
- DOI
10.1007/s10228-018-0613-z