Impact of starvation on paternal reproductive investment in Neoseiulus californicus

文献类型： 外文期刊

第一作者： Lu, Qin

作者： Lu, Qin;Lv, Jiale;Wang, Endong;Xu, Xuenong

作者机构：

关键词： Male fertility; Mating duration; Fecundity; Invalid mating

期刊名称：EXPERIMENTAL AND APPLIED ACAROLOGY （ 影响因子：2.38； 五年影响因子：2.265 ）

ISSN： 0168-8162

年卷期： 2022 年 87 卷 1 期

页码：

收录情况： SCI

摘要： Neoseiulus californicus is an important biological control agent of small arthropod pests, widely used in preventive releases at low prey densities. Therefore, it is important to study reproductive investment of this species, both females and males, under environmental pressure of limited prey availability. Laboratory experiments were performed to investigate N. californicus male reproductive investment after short-time fasting or long-term starvation. When fasted for 36 h, males are still able to complete a single mating with no significant change in reproductive parameters of its mate. But the total mating duration became 24% longer, especially timing for the male to fill the first spermatheca of its mate increased by 35%. If daily food availability was less than 20% of demand, males were still able to mate until the end of life, but their fertility reduced after ca. the seventh mating. Mating of some males at the end of their lives are invalid, with their mates failing to oviposit. Overall, we summarized that reproductive investment demand for a single mating was low in N. californicus males, but its priority in energy allocation was high. When starved, males tried to guarantee their mating capability, but their fertility decreased gradually.

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