| Autor: |
Ju, Z., Li, M. G., Diao, Z. E., Xu, Y. Y. |
| Zdroj: |
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao; Nov2009, Vol. 20 Issue 11, p2763-2767, 5p, 5 Graphs |
| Abstrakt: |
The determinations of super-cooling ability and body' s water and fat contents of overwintering Hyphantria cunea pupae showed that during overwintering, the female and male H. cunea pupae had the similar change patterns in their cold-resistance ability, i.e., increased with decreasing air temperature, but their body's water and fat contents, super-cooling point (SCP), and freezing point (FP) differed at different overwintering stages. The SCP was significantly lower at pre- and mid-overwintering stages than at late-overwintering stage, while FP had less difference among the stages. The body's water content was significantly higher at mid-overwintering stage than at pre- and late-overwintering stages. Comparing with non-overwintering pupae, the overwintering pupae had significantly lower SCP and FP, but significantly higher body's water and total fat contents. Regression analysis showed that there was a negative relationship between the water content and the SCP of female and male pupae (P < 0.05). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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