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Open AccessArticle

Consuming Parasitized Aphids Alters the Life History and Decreases Predation Rate of Aphid Predator

1
State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
2
Institute of Entomology, Guizhou University, Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture, Guiyang 550025, China
3
Centre for Biodiversity and Biosecurity, School of Biological Sciences, The University of Auckland, Auckland 1072, New Zealand
4
College of Tobacco Sciences, Guizhou University, Guiyang 550025, China
*
Author to whom correspondence should be addressed.
J.-F. Liu and X.-Q. Wang should be considered joint first author.
Insects 2020, 11(12), 889; https://doi.org/10.3390/insects11120889
Received: 15 November 2020 / Revised: 13 December 2020 / Accepted: 15 December 2020 / Published: 17 December 2020
(This article belongs to the Special Issue Biological Control and Insect Pathology)
Intraguild predation is a common phenomenon between predators and parasitoids. Despite numerous studies on the performance of intraguild predators by consuming on intraguild prey, the entire two-sex life table and predation rates of intraguild predators fed on intraguild prey remain poorly known. In this study, we investigated the effect of parasitized Myzus persicae aphids by Aphidius gifuensis (Ashmead) on the entire two-sex life table and predation rates of Aphidoletes aphidimyza (Rondani). Our results showed that feeding on parasitized aphids did not influence the survival rates of immature A. aphidimyza individuals but significantly increased the development time of A. aphidimyza individuals and markedly reduced their longevity. The predation rate of immature A. aphidimyza individuals was also adversely affected by feeding on parasitized aphids. These results provide basic data for the potential use of A. aphidimyza in combination with A. gifuensis in M. persicae control programs.
Intraguild predation interactions have substantial theoretical and practical implications for the dynamics of natural competitor populations used for biological control. Intraguild predation on parasitized aphids not only has a direct, negative effect on the parasitoid species, but it may indirectly influence the predator’s development, survival, reproduction and predation rates. In this study, we used two-sex life table theory, life table parameters and predation rates of Aphidoletes aphidimyza (Rondani) to compare when its populations fed on aphids (Myzus persicae Sulzer) (Hemiptera: Aphididae) that were either unparasitized or parasitized by Aphidius gifuensis (Ashmead) (Hymenoptera: Braconidae). Our results showed that individuals of A. aphidimyza were capable of completing their development and attaining maturity when they fed on parasitized aphids. Although feeding on parasitized aphids did not influence the survival rates of immature A. aphidimyza, it did significantly slow their development and extended their longevity, thereby reducing the fecundity and predation rates of A. aphidimyza. These findings may be pivotal for better understanding the sustained coexistence of predators with parasitoids in the biological control of aphids. View Full-Text
Keywords: intraguild predation; Aphidoletes aphidimyza (Rondani); Aphidius gifuensis (Ashmead); Myzus persicae (Sulzer); age-stage two-sex life table intraguild predation; Aphidoletes aphidimyza (Rondani); Aphidius gifuensis (Ashmead); Myzus persicae (Sulzer); age-stage two-sex life table
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MDPI and ACS Style

Liu, J.-F.; Wang, X.-Q.; Beggs, J.R.; Ou, H.-D.; Yu, X.-F.; Shen, X.-X.; Yang, M.-F. Consuming Parasitized Aphids Alters the Life History and Decreases Predation Rate of Aphid Predator. Insects 2020, 11, 889. https://doi.org/10.3390/insects11120889

AMA Style

Liu J-F, Wang X-Q, Beggs JR, Ou H-D, Yu X-F, Shen X-X, Yang M-F. Consuming Parasitized Aphids Alters the Life History and Decreases Predation Rate of Aphid Predator. Insects. 2020; 11(12):889. https://doi.org/10.3390/insects11120889

Chicago/Turabian Style

Liu, Jian-Feng; Wang, Xiu-Qin; Beggs, Jacqueline R.; Ou, Hou-Ding; Yu, Xiao-Fei; Shen, Xiu-Xian; Yang, Mao-Fa. 2020. "Consuming Parasitized Aphids Alters the Life History and Decreases Predation Rate of Aphid Predator" Insects 11, no. 12: 889. https://doi.org/10.3390/insects11120889

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