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排序方式： 共有169条查询结果，搜索用时 15 毫秒
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Juvenile Atlantic cod (Gadus morhua L.) and haddock (Melanogrammus aeglefinus L.) were subjected to 30 s air exposure stressors following acclimation to 4, 10 and 14 and 4, 8 and 14°C respectively. Both species responded to the stressor with increases in plasma cortisol at all temperatures tested. At 14°C cortisol levels peaked within 1 h post‐stressor, and returned to pre‐stressor levels within 24 h. In contrast, at 4°C, peak cortisol levels were not attained until 6 h post‐stressor in haddock and remained elevated beyond 24 h in both species. The rate of plasma glucose accumulation was greater at higher temperatures in both species and no increase was seen at 4°C. Lysozyme activity in cod, in response to the stressor, was lower than the values reported for some other species and increased slightly at 14°C. The results show that cod and haddock acclimated to different temperatures respond to common, acute stressors in a manner similar to other teleosts. 相似文献
163.
Myron A Peck Lawrence J Buckley Linda M O'Bryan Edward J Davies & Amy E Lapolla 《Aquaculture Research》2004,35(10):992-996
In an effort to optimize the efficiency of high‐density incubation of Atlantic cod Gadus morhua and haddock Melanogrammus aeglefinus eggs, the per cent hatch of eggs treated with four disinfectants (3% hydrogen peroxide, 1% polyvinylpyrrolidone iodine, 0.1% sodium hypochlorite and a 0.005% antibiotic solution – penicillin/streptomycin) was compared in both species. The per cent hatch of eggs of each species was greatest after a 24 h treatment with the antibiotic solution. The hatching success of eggs treated within the different disinfectant treatments depended upon the embryonic developmental stage in both species. The sodium hypochlorite treatment had the lowest % coverage of colony growth after disinfected haddock eggs were plated onto sterile agar media, highest survival rates to the end of the embryonic period, but the lowest per cent hatch. 相似文献
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M. F. Abbas J. D. Quinlan W. R. Buckley 《The Journal of Horticultural Science and Biotechnology》2013,88(4):437-438
Newly-grafted trees of apple cv Discovery on MM.106 were grown in pots at 25°C before transfer to growth rooms at 20°C; some were then subjected to 5 or 10 d at 10°C. The continuous 5-d cool period stimulated branching without reducing main shoot growth but the 10-d cool period reduced main shoot growth and did not stimulate branching. Subjecting similar plants to a night temperature of 0°C for various periods also stimulated branching but the number of cold nights and the stage of scion shoot growth influenced the magnitude of the response. 相似文献
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