Functional response of Harmonia axyridis preying on Acyrthosiphon pisum nymphs: the\xa0effect of temperature

Yasir Islam,Xingmiao Zhou,Miao Yabo,Farhan Mahmood Shah,Muhammad Razaq,Xu Rubing,Li Xihong

doi:10.1038/s41598-021-92954-x

Yasir Islam, Xingmiao Zhou + Show 5 more

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https://doi.org/10.1038/s41598-021-92954-x

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Abstract

In the current study, we investigated the functional response of Harmonia axyridis adults and larvae foraging on Acyrthosiphon pisum nymphs at temperatures between 15 and 35 °C. Logistic regression and Roger’s random predator models were employed to determine the type and parameters of the functional response. Harmonia axyridis larvae and adults exhibited Type II functional responses to A. pisum, and warming increased both the predation activity and host aphid control mortality. Female and 4th instar H. axyridis consumed the most aphids. For fourth instar larvae and female H. axyridis adults, the successful attack rates were 0.23 ± 0.014 h−1 and 0.25 ± 0.015 h−1; the handling times were 0.13 ± 0.005 h and 0.16 ± 0.004 h; and the estimated maximum predation rates were 181.28 ± 14.54 and 153.85 ± 4.06, respectively. These findings accentuate the high performance of 4th instar and female H. axyridis and the role of temperature in their efficiency. Further, we discussed such temperature-driven shifts in predation and prey mortality concerning prey-predator foraging interactions towards biological control.

Highlights

Xu Rubing[3], Muhammad Razaq[2], Miao Yabo[1], In the current study, we investigated the functional response of Harmonia axyridis adults and larvae foraging on Acyrthosiphon pisum nymphs at temperatures between 15 and 35 °C
In the type II functional response, the attack rate defines the steepness of the increase in predation with the increase of prey density, and handling time sets the satiation t hreshold[13]
Insect ectotherms are known to respond to thermal conditions for their development, biology, and population

Summary

Introduction

Xu Rubing[3], Muhammad Razaq[2], Miao Yabo[1], In the current study, we investigated the functional response of Harmonia axyridis adults and larvae foraging on Acyrthosiphon pisum nymphs at temperatures between 15 and 35 °C. Harmonia axyridis larvae and adults exhibited Type II functional responses to A. pisum, and warming increased both the predation activity and host aphid control mortality. For fourth instar larvae and female H. axyridis adults, the successful attack rates were 0.23 ± 0.014 h−1 and 0.25 ± 0.015 h−1; the handling times were. H. axyridis and the role of temperature in their efficiency We discussed such temperaturedriven shifts in predation and prey mortality concerning prey-predator foraging interactions towards biological control. In the type II functional response, the attack rate defines the steepness of the increase in predation with the increase of prey density, and handling time sets the satiation t hreshold[13]. Many sources are known to regulate these functional response parameters[14]

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