| 马尾松毛虫对马尾松和湿地松的选择与适应研究 |
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| 引用本文： | 何忠,曹红珍,曾菊平,梁玉勇,韩瑞东,戈峰.马尾松毛虫对马尾松和湿地松的选择与适应研究[J].昆虫学报,2007,50(2):125-135. |
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| 作者姓名： | 何忠 曹红珍 曾菊平 梁玉勇 韩瑞东 戈峰 |
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| 作者单位： | （中国科学院动物研究所,农业虫鼠害综合治理研究国家重点实验室,北京100080） |
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| 基金项目： | 国家自然科学基金重点资助项目(30330490) |
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| 摘 要： | 用马尾松老叶、新叶,湿地松老叶、新叶,当年生马尾松新叶、湿地松新叶和当年生以20％和40％β-蒎烯处理过的马尾松新叶作食料饲养马尾松毛虫。结果表明：马尾松毛虫幼虫在第1代发生期取食马尾松老叶、马尾松新叶、湿地松老叶和湿地松新叶等4种不同质量的食料后,因其食料中10种必需氨基酸含量和挥发性物质β-蒎烯含量的不同,导致幼虫的存活率差异显著。其中,取食马尾松老叶的幼虫成活率最高（44％）,依次为马尾松新叶（32.7％）、湿地松老叶（4％）,而取食湿地松新叶的幼虫全部死亡。通过马尾松针叶增加外援β-蒎烯喂养马尾松毛虫实验,表明增加了外源β-蒎烯的松针饲养的马尾松毛虫幼虫与用同样松针未增加外源β-蒎烯饲养的幼虫相比,死亡率明显提高;松树中β-蒎烯含量的增加与幼虫成活率呈显著负相关。由此,我们阐明了马尾松与湿地松对马尾松毛虫的抗虫机制。
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| 关 键 词： | 马尾松毛虫 马尾松 湿地松 寄主选择 氨基酸 β-蒎烯 存活率 死亡率 |
| 文章编号： | 0454-6296（2007）02-0125-11 |
| 修稿时间： | 2005-06-01 |
Feeding preference of Dendrolimus punctatus Walker (Lepidoptera:Lasiocampidae) on pines Pinus massoniana and P. elliottii |
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| HE Zhong,CAO Hong-Zhen,ZENG Ju-Ping,LIANG Yu-Yong,HAN Rui-Dong,GE Feng.Feeding preference of Dendrolimus punctatus Walker (Lepidoptera:Lasiocampidae) on pines Pinus massoniana and P. elliottii[J].Acta Entomologica Sinica,2007,50(2):125-135. |
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| Authors: | HE Zhong CAO Hong-Zhen ZENG Ju-Ping LIANG Yu-Yong HAN Rui-Dong GE Feng |
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| Affiliation: | (State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China) |
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| Abstract: | Larvae of Dendrolimus punctatus Walker (LepidopteraLasiocampidae) were fed with young needles, old needles and β-pinene-treated (20% and 40% in concentration) young needles of masson pine (Pinus massoniana) and slash pine (P. elliottii) respectively in the laboratory. The survival rates of the larvae among these needle groups were observed. The masson pine old needle group had the highest survival rate (44％), followed by the masson pine young needle group (32.67％) and the slash pine old needle group (4％), while all larvae feeding on slash pine young needles died. The analysis of the amino acid content and β-pinene showed the content of amino acid was highest but the content of β-pinene was lowest in masson pine old needles. In contrast, the content of amino acid was lowest but the content of β-pinene was highest in slash pine young needles. Also, the mortality rate of the larvae feeding on the β-pinene-treated needles was higher than that of the control. We speculated that the high content of β-pinene and the low content of amino acid could lead to high mortality of D. punctatus larvae feeding on slash pine needles. The content level of β-pinene should be considered as a standard for the resistance ability to D. punctatus, which prefers to feed on masson pine but not slash pine in the wild. |
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| Keywords: | Dendrolimus punctatus Pinus massoniana Pinus elliottii host preference amino acid β-pinene survival rate mortality |
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