Potential investment tradeoff between offspring production and functional recovery promoted by larval cannibalism in Coccinella septempunctata (Coleoptera: coccinellidae)

Pengxiang Wu; Baoxu Ma; Haoyong Ouyang; Runzhi Zhang

doi:10.1002/ps.5145

journal article Sep 14, 2018

Potential investment tradeoff between offspring production and functional recovery promoted by larval cannibalism in Coccinella septempunctata (Coleoptera: coccinellidae)

Pengxiang Wu

Baoxu Ma Haoyong Ouyang Runzhi Zhang

Pest Management Science Vol. 75 No. 2 pp. 484-491 · Wiley

View at Publisher Save 10.1002/ps.5145

Abstract

ABSTRACTBackgroundSince larval cannibalism is frequently observed in intensive rearing systems, the regeneration of lost legs is common for the beneficial species Coccinella septempunctata (Coccinella: Coccinellidae) to adapt to the competitive environment, but whether functional recovery occurs in the leg‐regenerated coccinellids remains unknown. To evaluate the functional recovery of regenerated right foreleg after being damaged, the behaviors of leg‐regenerated ladybugs containing predation, attachment, intraspecific competition, prey preference and fecundity were studied in the laboratory.ResultsThe prey consumption and searching rate of leg‐regenerated ladybugs decreased, and their handling time extended. A significantly reduced attachment coefficient was detected in leg‐regenerated coccinellids. Because of the competitive inferiority, leg‐regenerated ladybugs were greatly hampered in competition with normal opponents, and this inferiority led to a switch of prey preference from big‐sized adults to small‐sized first–second instar nymphs of Paratrioza sinica. However, although reduced functional abilities were examined, the leg‐regenerated paternity had a higher reproductive output compared to the normal paternity.ConclusionLeg‐regenerated ladybugs caused by cannibalism may make an investment tradeoff between egg fecundity and functional recovery. Thus, larval cannibalism potentially improves the offspring production of the biological control agent in complex environments. © 2018 Society of Chemical Industry

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Details

Published: Sep 14, 2018
Vol/Issue: 75(2)
Pages: 484-491
License: View

Authors

P

Pengxiang Wu

State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology, Chinese Academy of Sciences Beijing China; University of Chinese Academy of Sciences Beijing China

B

Baoxu Ma

State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology, Chinese Academy of Sciences Beijing China; University of Chinese Academy of Sciences Beijing China

H

Haoyong Ouyang

State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology, Chinese Academy of Sciences Beijing China; University of Chinese Academy of Sciences Beijing China

R

Runzhi Zhang

State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology, Chinese Academy of Sciences Beijing China

Funding

Chinese Academy of Sciences

Cite This Article

Pengxiang Wu, Baoxu Ma, Haoyong Ouyang, et al. (2018). Potential investment tradeoff between offspring production and functional recovery promoted by larval cannibalism in Coccinella septempunctata (Coleoptera: coccinellidae). Pest Management Science, 75(2), 484-491. https://doi.org/10.1002/ps.5145

Potential investment tradeoff between offspring production and functional recovery promoted by larval cannibalism in Coccinella septempunctata (Coleoptera: coccinellidae)

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