饥饿状态下草鱼生长激素的分泌
THE SECRETION OF GROWTH HORMONE IN STARVED GRASS CARP, CTENOPHARYNGODON IDELLUS
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摘要: 以两种规格草鱼为对象,研究了饥饿对其生长激素分泌的影响.检测由背大动脉导管抽取的连续血样的结果表明;饥饿状态下草鱼(体重为0.5-1.0kg)生长激素分泌仍是间歇性的,但饥饿明显提高其总体生长激素平均值、基础生长激素平均值和其最大峰值.对于草鱼鱼种(体重为25-30g),饥饿也明显提高其血液中生长激素水平,但草鱼种的肥满度系数和血糖浓度却降低.在体外灌流实验中,饥饿的草鱼种脑垂体碎片生长激素基础分泌值明显高于正常投喂的对照组.这些结果表明;饥饿状态下草鱼生长激素分泌增强.Abstract: The effects of starvation on the secretion of growth hormone were investigated in juvenile and fingerling grass carp. Serial blood samples via the dorsal aorta cannulae showed that the GH secretion of starved juvenile grass carp(bodyweight 0.5-1.0kg)was still episodic, but with higher values of average GH, basal GH, and peak GH. As to the fingerling grass carp(bodyweight 25-30g), starvation increased their serum GH levels but decreased their condition Coefficient and concentrations of blood glucose. In vitro perfused pituitary fragments of starved grass carp fingerling basal GH secretion was higher than that of fed control. These results indicated that GH secretion in grass carp was being enhanced under starvation.
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Keywords:
- Grass carp /
- Starvation /
- Condition coefficient GH /
- Episodic secretion /
- Blood glucose
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[1] Love R M.The Chemical Biology of Fishes [M].New York: Academic Press,1980[2] Sumpter J P,Le Bail P Y,Pickering A D,et al.The effect of starvation on growth and plasma growth hormone concentrations of rainbow trout,Oncorhynchus mykiss [J].Gen.Comp.Endocrinol.,1991 83: 94—102[3] 谢小军,邓利,张波.饥饿对鱼类生理生态学影响的研究进展[J].水生生物学报,1998,22;181—188[4] 沈文英,林浩然,张为民.饥饿和再投喂对草鱼种生物化学组成的影响[J].动物学报,1999,45;404—412[5] Evans D H.The Physiology of Fishes [M].New York: CRC Press,1997,65—97[6] Wagner G F,McKeown B A.Development of a salmon growth hormone radioimmunoassay [J].Gen.comp.Endocrinol.,1986,62:452—458[7] Barrett B A,McKeown B A.Sustained exercise augments longterm starvation increases in plasma growth hormone in the steelhead trout,Salmo gairdneri [J].Can.J.Zool.1988,66: 853—855[8] 黄耀桐,刘永坚.草鱼种无机盐需要量之研究[J].水生生物学报,1989,13; 134—151[9] Smith L S,Bell G R.A technique for prolonged blood sampling in free swimming salmon [J].J.Fish Res.Bd.Can.,1964,21: 711—717[10] 林信伟,林浩然.鲑鱼促性腺激素释放激素(sGnRH)调节鲤鱼脑垂体生长激素分泌的离体研究[J].动物学报,1994,40;30—38[11] 张为民,张利红,林浩然.儿茶酚胺类药物对草鱼生长激素分泌的影响[J].水生生物学报,1996,20;340—344[12] 方家驹.生物化学实验教程[M].北京;人民卫生出版社,1993 Love R M.The Chemical Biology of Fishes [M].New York: Academic Press,1980[2] Sumpter J P,Le Bail P Y,Pickering A D,et al.The effect of starvation on growth and plasma growth hormone concentrations of rainbow trout,Oncorhynchus mykiss [J].Gen.Comp.Endocrinol.,1991 83: 94—102[3] 谢小军,邓利,张波.饥饿对鱼类生理生态学影响的研究进展[J].水生生物学报,1998,22;181—188[4] 沈文英,林浩然,张为民.饥饿和再投喂对草鱼种生物化学组成的影响[J].动物学报,1999,45;404—412[5] Evans D H.The Physiology of Fishes [M].New York: CRC Press,1997,65—97[6] Wagner G F,McKeown B A.Development of a salmon growth hormone radioimmunoassay [J].Gen.comp.Endocrinol.,1986,62:452—458[7] Barrett B A,McKeown B A.Sustained exercise augments longterm starvation increases in plasma growth hormone in the steelhead trout,Salmo gairdneri [J].Can.J.Zool.1988,66: 853—855[8] 黄耀桐,刘永坚.草鱼种无机盐需要量之研究[J].水生生物学报,1989,13; 134—151[9] Smith L S,Bell G R.A technique for prolonged blood sampling in free swimming salmon [J].J.Fish Res.Bd.Can.,1964,21: 711—717[10] 林信伟,林浩然.鲑鱼促性腺激素释放激素(sGnRH)调节鲤鱼脑垂体生长激素分泌的离体研究[J].动物学报,1994,40;30—38[11] 张为民,张利红,林浩然.儿茶酚胺类药物对草鱼生长激素分泌的影响[J].水生生物学报,1996,20;340—344[12] 方家驹.生物化学实验教程[M].北京;人民卫生出版社,1993
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