Life History ofPodisus maculiventrisGiven Low Numbers ofEpilachna varivestisas Prey
作者:
Jesusa Crisostomo Legaspi,
Robert J. O'Neil,
期刊:
Environmental Entomology
(OUP Available online 1993)
卷期:
Volume 22,
issue 5
页码: 1192-1200
ISSN:0046-225X
年代: 1993
DOI:10.1093/ee/22.5.1192
出版商: Oxford University Press
关键词: Podisus maculiventris;life history;predation
数据来源: OUP
摘要:
Body weight, reproduction, and longevity of mated and unmated femalePodisus maculiventris(Say) were measured under low and high numbers of prey,Epilachna varivestisMulsant (Coleoptera: Coccinellidae). Under low rates of predation, the predator maintained longevity apparently at the expense of reproduction. Predators fed less frequently oviposited less often and later in life. Body weight of females was dependent on diet; females fed more frequently weighed more than those fed infrequently. Results are compared with previous life history studies of this predator. We found similarities in our results to other studies on longevity and reproduction ofP. maculiventrisprovided other types of prey. The trade-off between reproduction and longevity may be a response to environments with temporal variation in prey abundance.
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