期刊
BULLETIN OF ENTOMOLOGICAL RESEARCH
卷 111, 期 1, 页码 66-72出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0007485320000309
关键词
Coleoptera; developmental stages; fecundity; fertility; Propylea dissecta
类别
The study found that food availability significantly affects mating time, mating duration, and reproductive output of Propylea dissecta, with sufficient food enhancing their reproductive performance.
Food availability is a fundamental factor determining an animal's potential fitness. Carry-over effects of food limitation from development to adulthood are known to influence reproduction, ageing, and tolerance to stress. We have examined the effect of stage-specific variation (before adult emergence or pre-emergence, post-emergence and post-mating) in food availability in Propylea dissecta (Mulsant). Larvae were reared separately on two different pre-emergence food regimes (abundant or restricted) until pupation. Newly emerged adults were further split into two groups and placed on abundant or restricted post-emergence regimes. After mating, females were split and reared on any one of two post-mating regimes. The results revealed that: (i) time to commence mating declined with increased food availability in pre- and post-emergence stages, (ii) mating duration increased with food availability post-emergence, (iii) highest reproduction output was observed in individuals who had abundant food pre- and post-emergence. However, food availability at the time of oviposition also had a strong influence on fecundity. Solo bouts of scarcity, regardless of which stage suffered them, were effectively managed in at least two of the three stages (pre-emergence, post-emergence, post-mating) had abundant food.
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