Functional responses and intraspecific competition in the ladybird Harmonia axyridis (Coleoptera: Coccinellidae) provided with Melanaphis sacchari (Homoptera: Aphididae) as prey

Title:

Functional responses and intraspecific competition in the ladybird Harmonia axyridis (Coleoptera: Coccinellidae) provided with Melanaphis sacchari (Homoptera: Aphididae) as prey

Creator:

Wu, Pengxiang, Zhang, Jing, Haseeb, Muhammad, Yan, Shuo, Kanga, Lambert, and Zhang, Runzhi

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:34bfae0f-2d6a-4d44-9d78-f716c61db153
uuid:34bfae0f-2d6a-4d44-9d78-f716c61db153
issn:1210-5759
doi:10.14411/eje.2018.022

Subject:

brouci, slunéčkovití, slunéčko východní, polokřídlí, mšicovití, beetles, Coccinellidae, Harmonia axyridis, Hemiptera, Aphididae, Melanaphis sacchari, functional response, intraspecific competition, 2, and 59

Type:

model:article and TEXT

Format:

print, počítač, and online zdroj

Description:

Functional responses at each developmental stage of predators and intraspecific competition associated with direct interactions among them provide insights into developing biological control strategies for pests. The functional responses of Harmonia axyridis (Pallas) at each developmental stage of Melanaphis sacchari (Zehntner) and intraspecific competition among predators were evaluated under laboratory conditions. The results showed that all stages of H. axyridis displayed a type II functional response to M. sacchari. Based on Holling's disc equation, the instantaneous searching rates were highest (a) and handling time was shortest (Th) of fourth instar larvae (a = 0.8818; Th = 3.9 min) and female adults (a = 0.9881; Th = 3.0 min) at larval and adult stages, respectively. The coefficients of mutual interference (m) assessed by the intraspecific competition equation were higher for fourth instar larvae (m = 0.4764) and female adults (m = 0.4183). The present study indicates that fourth instar and female adult were more effective stages of H. axyridis in the context of biological control but suitable predator densities need to be considered before natural enemy release., Pengxiang Wu, Jing Zhang, Muhammad Haseeb, Shuo Yan, Lambert Kanga, Runzhi Zhang., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2018 Volume:115 | Number:1

Harvested from:

CDK

Metadata only:

false