TY - JOUR
T1 - Comparison of vertebral number between wild and hatchery-reared population, and effect of stock enhancement programs on vertebral number in masu salmon Oncorhynchus masou
AU - Ando, Daisei
AU - Shimoda, Kazutaka
AU - Takeuchi, Katsumi
AU - Iijima, Anai
AU - Urabe, Hirokazu
AU - Shinriki, Yoshihito
AU - Nakajima, Masamichi
N1 - Publisher Copyright:
© 2019 Nihon Suisan Gakkai. All rights reserved.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Vertebral numbers in hatchery-reared and wild populations of masu salmon Oncorhynchus masou were compared. In addition, vertebral numbers were analyzed in wild masu salmon juveniles from rivers in which hatcheryreared fry, juveniles, and smolts had been stocked. Hatchery-reared masu salmon had fewer vertebrae than fish from wild populations. This difference may have been caused by environmental factors (incubation water temperatures) during the early developmental stages. Wild masu salmon from a river in which stock enhancement programs have been continued for a long time had fewer vertebrae than wild fish from neighboring rivers. Stock enhancement programs may genetically affect the vertebral number in wild masu salmon populations.
AB - Vertebral numbers in hatchery-reared and wild populations of masu salmon Oncorhynchus masou were compared. In addition, vertebral numbers were analyzed in wild masu salmon juveniles from rivers in which hatcheryreared fry, juveniles, and smolts had been stocked. Hatchery-reared masu salmon had fewer vertebrae than fish from wild populations. This difference may have been caused by environmental factors (incubation water temperatures) during the early developmental stages. Wild masu salmon from a river in which stock enhancement programs have been continued for a long time had fewer vertebrae than wild fish from neighboring rivers. Stock enhancement programs may genetically affect the vertebral number in wild masu salmon populations.
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U2 - 10.2331/suisan.19-00007
DO - 10.2331/suisan.19-00007
M3 - Article
AN - SCOPUS:85077229767
VL - 85
SP - 487
EP - 493
JO - Nippon Suisan Gakkaishi
JF - Nippon Suisan Gakkaishi
SN - 0021-5392
IS - 5
ER -