CIRCANNUAL CYCLE OF SEAWATER ADAPTABILITY IN ONCORHYNCHUS-NERKA - GENETIC-DIFFERENCES BETWEEN SYMPATRIC SOCKEYE-SALMON AND KOKANEE

被引:60
作者
FOOTE, CJ [1 ]
WOOD, CC [1 ]
CLARKE, WC [1 ]
BLACKBURN, J [1 ]
机构
[1] FISHERIES & OCEANS CANADA,BIOL SCI BRANCH,PACIFIC BIOL STN,NANAIMO V9R 5K6,BC,CANADA
关键词
D O I
10.1139/f92-012
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Anadromous sockeye salmon and nonanadromous kokanee (Oncorhynchus nerka) spawn sympatrically in locations across British Columbia, yet remain genetically distinct. To investigate the possibility that these differences are maintained by selection against hybrids of the two forms owing to differences in seawater adaptability, we raised pure and reciprocal crosses of Shuswap River sockeye and kokanee in controlled hatchery conditions and tested their seawater adaptabilities nine times over 2 yr. Sockeye, kokanee, and reciprocal hybrids all showed a seasonal cycle in their seawater adaptability, which was lowest in midwinter and highest in the spring. However, clear differences were evident among cross-types in the spring of their second year. Sockeye were the first to show increased seawater adaptabilities, hybrid groups next, and kokanee last. The observed differences could not be attributed to tank effects, or to differences in size, sex, or state of maturity.
引用
收藏
页码:99 / 109
页数:11
相关论文
共 70 条
[11]  
Burgner R.L., 1987, Canadian Special Publication of Fisheries and Aquatic Sciences, V96, P129
[12]   CAN NEWFOUNDLAND LANDLOCKED SALMON, SALMO-SALAR L, ADAPT TO SEA-WATER [J].
BURTON, MP ;
IDLER, DR .
JOURNAL OF FISH BIOLOGY, 1984, 24 (01) :59-64
[13]  
Chernitsky A. G., 1983, J ICHTHYOL, V23, P84
[14]   EFFECT OF TELEOST PITUITARY GROWTH-HORMONE ON GROWTH OF TILAPIA-MOSSAMBICA AND ON GROWTH AND SEAWATER ADAPTATION OF SOCKEYE SALMON (ONCORHYNCHUS-NERKA) [J].
CLARKE, WC ;
FARMER, SW ;
HARTWELL, KM .
GENERAL AND COMPARATIVE ENDOCRINOLOGY, 1977, 33 (02) :174-178
[15]   EFFECT OF INITIAL DAYLENGTH ON GROWTH, SEAWATER ADAPTABILITY AND PLASMA GROWTH-HORMONE LEVELS IN UNDERYEARLING COHO, CHINOOK, AND CHUM SALMON [J].
CLARKE, WC ;
SHELBOURN, JE ;
OGASAWARA, T ;
HIRANO, T .
AQUACULTURE, 1989, 82 (1-4) :51-62
[16]   DELAYED PHOTOPERIOD PRODUCES MORE UNIFORM GROWTH AND GREATER SEAWATER ADAPTABILITY IN UNDERYEARLING COHO SALMON (ONCORHYNCHUS-KISUTCH) [J].
CLARKE, WC ;
SHELBOURN, JE .
AQUACULTURE, 1986, 56 (3-4) :287-299
[17]   EVALUATION OF THE SEA-WATER CHALLENGE TEST AS AN INDEX OF MARINE SURVIVAL [J].
CLARKE, WC .
AQUACULTURE, 1982, 28 (1-2) :177-183
[18]   ACCELERATED PHOTOPERIOD ADVANCES SEASONAL CYCLE OF SEAWATER ADAPTATION IN JUVENILE BALTIC SALMON, SALMO-SALAR L [J].
CLARKE, WC ;
LUNDQVIST, H ;
ERIKSSON, LO .
JOURNAL OF FISH BIOLOGY, 1985, 26 (01) :29-35
[19]   DEVELOPMENT OF OSMOTIC AND IONIC REGULATION IN JUVENILE COHO SALMON ONCORHYNCHUS KISUTCH [J].
CONTE, FP ;
WAGNER, HH ;
FESSLER, J ;
GNOSE, C .
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY, 1966, 18 (01) :1-&
[20]   EARLY SEXUAL-MATURATION IN MALES OF WILD SEA TROUT, SALMO-TRUTTA-L, INHIBITS SMOLTIFICATION [J].
DELLEFORS, C ;
FAREMO, U .
JOURNAL OF FISH BIOLOGY, 1988, 33 (05) :741-749