MIGRATION AND GENETIC-REGULATION OF THE PRE-REPRODUCTIVE PERIOD IN THE COTTON-BOLLWORM MOTH, HELICOVERPA-ARMIGERA
MIGRATION AND GENETIC-REGULATION OF THE PRE-REPRODUCTIVE PERIOD IN THE COTTON-BOLLWORM MOTH, HELICOVERPA-ARMIGERA
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DOI：
10.1038/hdy.1993.57
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发表时间：
1993-04-01
期刊：
影响因子：
3.8
通讯作者：
GATEHOUSE, AG
中科院分区：
文献类型：
--
作者：
COLVIN, J;GATEHOUSE, AG
生殖前期（PRP）是夜行动物迁徙研究的一个重要时期，因为它与迁徙飞行可能发生的夜晚数量接近。本研究对印度、马拉维和中国棉铃虫品系鸣叫前期（PCP =雌性PRP）分布进行了分析，发现它们之间存在显著差异。对马拉维菌株和中国菌株进行了PCP的兄弟姐妹分析实验。在两个兄弟姐妹分析实验中，变异的父辈分量显著大于父辈分量。由于鳞翅目中雌性是异配子性，这表明一些影响PCP的基因是x连锁的。雄性飞蛾也有PRPs，其分布与其雌性兄弟姐妹没有显著差异。一项仅以PCP为基础的选择实验，仅经过两代的选择，就产生了早熟和晚熟雌性的两条不同系。经过三代选择，对两系的雄性PRP分布进行了分析，发现差异显著。分化的方向与雌性相同，这表明两性的PRP是由同一组基因调控的。本研究的结果被认为与阿米巴蚜的迁移进化有关。
The pre-reproductive period (PRP) is of interest in the study of noctuid migration because it approximates to the number of nights in which migratory flight can occur. This study examined the pre-calling period (PCP = female PRP) distribution of Indian, Malawian and Chinese Helicoverpa armigera strains and found them to be significantly different. A PCP sib-analysis experiment was conducted both on the Malawian and on the Chinese strains. In both sib-analysis experiments, the sire component of variance was significant and greater than that of the dam component. As females are the heterogametic sex in Lepidoptera, this suggests that some genes influencing the PCP are X-linked. Male moths were also shown to have PRPs, the distribution of which was not significantly different from that of their female siblings. A selection experiment, based on the PCP only, produced two divergent lines of early- and late-maturing females after only two generations of selection. After three generations of selection, the male PRP distributions in the two lines were examined and were found to differ significantly. The divergence occurred in the same direction as for females, suggesting that the same set of genes regulates the PRP in both sexes. The results of this study are considered in relation to the evolution of migration in H. armigera.