The nutritional status of an individual can significantly influence its life history traits,including development,growth,reproduction,and survival.In the predatory mite Phytoseiulus persimilis Athias-Henriot(Acari:Phy...The nutritional status of an individual can significantly influence its life history traits,including development,growth,reproduction,and survival.In the predatory mite Phytoseiulus persimilis Athias-Henriot(Acari:Phytoseidae),the plasticity of life history traits,such as developmental time and size at maturity,is influenced by the quality and quantity of food.This study aimed to investigate the effects of dietary restriction at different life stages(i.e.,juvenile,early adulthood,and later adulthood)on the lifespan and fecundity of P persimilis.We found that reduced dietary intake during early adulthood resulted in a shorter lifespan for both male and female P persimilis.Furthermore,this study demonstrated a sex-specific response to dietary restriction:it extended the lifespan of males but reduced that of females during later adulthood.Diet restriction during the postovipositional period of females showed the most variable life history trait response.Our results showed that the impact of diet restriction at different life stages can have combined influences on the postovipositional duration of P persimilis,where the individuals receiving diet restriction during immature development and early adulthood had a greater reduction in ovipositional duration as those experiencing diet restriction during late adulthood.In addition,we observed a positive correlation between the lifespan and fecundity of females,with higher prey availability increasing both.The insights obtained from our research contribute to a better understanding of the aging process and dietary requirements of P persimilis,which can facilitate the development of more effective biological control strategies using this predator for spider mites in agriculture.展开更多
[Objective] The aim was to study on the effect of hosts on development and reproduction of mealybug （Phenacoccus solenopsis Tinsley）. [Method] Observation was conducted on developmental durations and fecundity of Ph...[Objective] The aim was to study on the effect of hosts on development and reproduction of mealybug （Phenacoccus solenopsis Tinsley）. [Method] Observation was conducted on developmental durations and fecundity of Phenacoccus solenopsis Tinsley fed on Gossypium spp., Nicotiana tabacum, Solanum tuberosum L and Hibiscus rosa-sinensis. [Result] There were differences among all durations, generation durations and fecundities of the mealybug adult females. Specifically, the generation durations on cotton （Gossypium spp.）, tobacco（ Nicotiana tabacum）, potato （Solanum tuberosum L） and Hibiscus rosa-sinensis were 30.2, 28.2, 37.3, and 27.7 d, and the fecundities per female were 626.0, 417.2, 552.5, and 183.2 ind., respectively. [Conclusion] The mealybug would have strong pontential in population growth when fed on cotton, tobacco and potato.展开更多
基金supported in part by New Zealand Government core funding for Crown Research Institutes from the Ministry of Business,Innovation,and Employment's Science and Innovation Group.
文摘The nutritional status of an individual can significantly influence its life history traits,including development,growth,reproduction,and survival.In the predatory mite Phytoseiulus persimilis Athias-Henriot(Acari:Phytoseidae),the plasticity of life history traits,such as developmental time and size at maturity,is influenced by the quality and quantity of food.This study aimed to investigate the effects of dietary restriction at different life stages(i.e.,juvenile,early adulthood,and later adulthood)on the lifespan and fecundity of P persimilis.We found that reduced dietary intake during early adulthood resulted in a shorter lifespan for both male and female P persimilis.Furthermore,this study demonstrated a sex-specific response to dietary restriction:it extended the lifespan of males but reduced that of females during later adulthood.Diet restriction during the postovipositional period of females showed the most variable life history trait response.Our results showed that the impact of diet restriction at different life stages can have combined influences on the postovipositional duration of P persimilis,where the individuals receiving diet restriction during immature development and early adulthood had a greater reduction in ovipositional duration as those experiencing diet restriction during late adulthood.In addition,we observed a positive correlation between the lifespan and fecundity of females,with higher prey availability increasing both.The insights obtained from our research contribute to a better understanding of the aging process and dietary requirements of P persimilis,which can facilitate the development of more effective biological control strategies using this predator for spider mites in agriculture.
基金Supported by National Science Foundation of China(31171855)Special R&D Fund for Plant Epidemic Prevention and Quarantine in Guangdong Province(Yuenongji201190)~~
文摘[Objective] The aim was to study on the effect of hosts on development and reproduction of mealybug （Phenacoccus solenopsis Tinsley）. [Method] Observation was conducted on developmental durations and fecundity of Phenacoccus solenopsis Tinsley fed on Gossypium spp., Nicotiana tabacum, Solanum tuberosum L and Hibiscus rosa-sinensis. [Result] There were differences among all durations, generation durations and fecundities of the mealybug adult females. Specifically, the generation durations on cotton （Gossypium spp.）, tobacco（ Nicotiana tabacum）, potato （Solanum tuberosum L） and Hibiscus rosa-sinensis were 30.2, 28.2, 37.3, and 27.7 d, and the fecundities per female were 626.0, 417.2, 552.5, and 183.2 ind., respectively. [Conclusion] The mealybug would have strong pontential in population growth when fed on cotton, tobacco and potato.
