Open AccessCytological and biochemical studies in back‐crosses between the hybrid Atlantic salmon × sea trout and its parental species
Author(s) -
NYGREN AXEL,
NYMAN LENNART,
SVENSSON KNUT,
JAHNKE GUN
Publication year - 1975
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1975.tb01014.x
Subject(s) - biology , trout , hybrid , fishery , brown trout , offspring , fish <actinopterygii> , zoology , chromosome number , chromosome , ecology , karyotype , gene , genetics , botany , pregnancy
A male hybrid between a female salmon from Lule river in Northern Sweden and a male trout from Ireland has been back‐crossed to a female salmon and a female trout both from Lule river. Eleven months after the crosses had been made no offspring was left in the combination trout × hybrid, while 4 individuals of the combination salmon × hybrid were still alive. The chromosome numbers of the fish studied are: salmon, 2n=58; trout, 2n=80; hybrid, 2n=69; back‐crossed individuals 2n=60, 64 and 66. Various proteins of the different components were analysed. To our knowledge this is the first joint cytological/electrophoretic investigation of hybrids of this salmonid combination.