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Reproduction of interspecific hybrids of Atlantic salmon and brown trout in a stream environment
Author(s) -
GarciaVazquez Eva,
Ayllon Fernando,
Martinez Jose Luis,
Perez Juliana,
Beall Edward
Publication year - 2003
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1046/j.1365-2427.2003.01068.x
Subject(s) - salmo , brown trout , biology , biological dispersal , interspecific competition , fishery , reproduction , hatchery , hybrid , tributary , trout , ecology , geography , fish <actinopterygii> , population , botany , demography , cartography , sociology
SUMMARY 1. Reproduction between Atlantic salmon males and interspecific hybrid Salmo salar  ×  Salmo trutta females was monitored in a controlled flow channel diverted from a south European river located at the edge of Atlantic salmon natural geographic distribution in Europe. 2. Post‐F1 hybrids were viable and survived in the wild, at least until dispersal from redds. After transfer to hatchery conditions, 67% survived into the second year. 3. The hybrids possessed 98 chromosomes: two sets of Atlantic salmon(2n = 58) and one set of brown trout (n = 40) chromosomes. 4. The existence of a low proportion of allotriploid individuals can be expected in rivers where Atlantic salmon and brown trout populations coexist.

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