褐飞虱短翅型雌虫延迟交配对其繁殖的影响

Effects of delayed mating on reproduction in brachypterous females of the brown planthopper,Nilaparvata lugens

延迟交配往往影响昆虫的繁殖和寿命。本文研究了褐飞虱短翅型雌虫延迟交配对其寿命、产卵量及累计产卵率的影响。结果表明雌虫寿命在不同日龄交配雌虫之间存在明显差异。羽化后2、4、6、81、0 d交配的雌虫,随着交配日龄的增加,寿命延长。4日龄后随着交配日龄的增加,雌虫产卵量逐渐降低。其中4日龄交配雌虫的产卵量最高,约337粒;10日龄产卵量最低,约168粒。不同日龄交配雌虫的累计产卵率差异不明显。

Delayed mating usually affects insect＇s reproduction and longevity. Effects of delayed mating on longevity, fecundity and cumulative egg-laying rate were investigated for brachypterous females of the brown planthopper, Nilaparvata lugens. The results showed that, when the females were paired with males at the ages of 2, 4, 6, 8 and 10 d after emergence, females mated at older ages lived longer than those mated at younger ages. Females mated at 4, 6, 8 and 10 d after emergence showed decreasing fecundity with the increase of the age at mating; females mated at 4 d after emergence oviposited the most （about 337 eggs per female） and females mated at 10 d after emergence, the lowest （about 168 eggs per female）. There were no significant differences in cumulative egg-laying rates between females mated at different ages.