›› 2009, Vol. 52 ›› Issue (9): 1017-1023.

• 研究论文 • 上一篇    下一篇

桑叶营养对家蚕血淋巴阳离子水平的调节作用

Firdose Ahmad MALIK, Y. Srinivasa REDDY   

  • 出版日期:2009-09-20 发布日期:2009-09-20
  • 通讯作者: Firdose Ahmad MALIK

Influence of mulberry nutrition on the regulation of haemolymph cation levels in the silkworm, Bombyx mori

Firdose Ahmad MALIK, Y. Srinivasa REDDY   

  • Online:2009-09-20 Published:2009-09-20

摘要: 调查了取食不同品种桑树(M-5, S-36和V-1)叶片的家蚕(多化性品种Pure Mysore、 二化性品种NB4D2和CSR2)5龄幼虫血淋巴中阳离子的变化。结果表明: 家蚕幼虫血淋巴中Na+浓度低, K+和Mg2+浓度很高, Ca2+浓度较高。在幼虫活跃取食期间, 血淋巴中阳离子水平显著提高。血淋巴中阳离子水平与排泄物的量呈负相关。血淋巴中阳离子水平受阳离子外泌的控制。与非取食阶段相比, 取食阶段的阳离子清除速率低。家蚕二化性品种的血淋巴阳离子水平比多化性品种PM高出30%。结果说明家蚕品种对家蚕血淋巴阳离子变化的影响显著大于桑树品种或家蚕个体发育的影响。

关键词: 家蚕, 桑叶, 营养, 血淋巴, 阳离子水平

Abstract: Changes in the levels of haemolymph cations of 5th instar larvae of Pure Mysore, NB4D2 and CSR2 fed on M-5, S-36 and V-1 mulberry varieties were investigated. The larval haemolymph showed low Na+ and very high K+ and Mg2+ concentrations and moderately high Ca2+ like the mulberry leaf. The haemolymph cation levels increased significantly during the active feeding period of the larva. A negative correlation existed between the levels of cations in haemolymph and excreta. The haemolymph cation levels were held by controlled excretion of the cations. The rates of elimination of cations were lower during feeding stages than during non feeding stages. The haemolymph cation levels of bivoltine races were about 30% higher than the multivoltine PM. The impact of race was significantly more than that of mulberry variety or ontogeny in upward changes in haemolymph cations.

Key words: Bombyx mori, mulberry leaf, nutrition, haemolymph, cation level