SEAWATER ADAPTABILITY OF NEW-ZEALAND SOCKEYE (ONCORHYNCHUS-NERKA) AND CHINOOK SALMON (O-TSHAWYTSCHA) - PHYSIOLOGICAL CORRELATES OF SMOLTIFICATION AND SEAWATER SURVIVAL

被引：23

作者：

FRANKLIN, CE ^{[1
]}

DAVISON, W ^{[1
]}

FORSTER, ME ^{[1
]}

机构：

[1] UNIV CANTERBURY,DEPT ZOOL,CHRISTCHURCH 1,NEW ZEALAND

来源：

AQUACULTURE | 1992年 / 102卷 / 1-2期

关键词：

D O I：

10.1016/0044-8486(92)90295-V

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Gill Na+-K+-ATPase activities, haematocrit, and plasma osmolarity, cortisol, chloride and sodium concentrations were monitored over a 1-year period in freshwater stocks of salmon and in 24-h-seawater-challenged salmon. Salmon (0+ to 1 year old) failed to adapt to seawater from December to March (austral summer) when seawater temperatures were higher than 16-degrees-C. In freshwater-sampled salmon, smoltification coincided with high gill Na+-K+-ATPase activities and plasma cortisol levels (> 35 ng/ml) and low plasma chloride levels (< 120 mmol/l). Seawater survival was highly correlated with the 24-h-seawater-challenge samples of plasma cortisol and ionic levels which provide the best indicators for successful seawater adaptation.

引用

页码：127 / 142

页数：16

共 31 条

[1] ENDOCRINE CONTROL OF SMOLTIFICATION IN ANADROMOUS SALMONIDS [J].