Prey instar preference and functional responses of Mallada basalis (Walker) (Neuroptera: Chrysopidae) to different life stages of Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae)

[Display omitted] •The green lacewing Mallada basalis is a promising predator to the prey Phenacoccus solenopsis.•M. basalis larvae prefer early- over late-stage nymphs or adult P. solenopsis.•M. basalis exhibits a type II functional responses to P. solenopsis.•The 3rd instar M. basalis showed highe...

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Veröffentlicht in:Journal of Asia-Pacific entomology 2021, 24(4), , pp.1251-1256
Hauptverfasser: Zhou, Juan, Li, Zi-Yuan, Guan, Ying-Xue, Pan, Zhi-Ping, Chen, Ke-Wei
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Sprache:eng
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Zusammenfassung:[Display omitted] •The green lacewing Mallada basalis is a promising predator to the prey Phenacoccus solenopsis.•M. basalis larvae prefer early- over late-stage nymphs or adult P. solenopsis.•M. basalis exhibits a type II functional responses to P. solenopsis.•The 3rd instar M. basalis showed higher attack rate and shorter handling time than 2nd instar. Prey instar preference and functional responses of 2- and 3-instar Mallada basalis (Walker) (Neuroptera: Chrysopidae) larvae to 1- to 3-instar Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) nymphs and adults were assessed in laboratory. Results indicated that both 2- and 3-instar M. basalis larvae preferred young over old P. solenopsis nymphs and adults were the least preferred. The 3-instar M. basalis larvae preyed more adult P. solenopsis than 2-instar larvae. Mallada basalis exhibited type II functional responses to prey densities: An increase in prey density leads to an increase in consumed preys. Regardless of P. solenopsis stages, the number of preys consumed by the 3-instar M. basalis larvae was greater than that by the 2-instar larvae. Attack rates and handling times differed depending on prey and predator stage combinations. The highest attack rate (1.1874) and lowest handling time (0.0040 h) were observed for the 3-instar M. basalis larvae fed on the 1-instar P. solenopsis nymphs. Regardless of P. solenopsis stages, the attack rate of 3-instar M. basalis was greater than 2-instar, whereas the reverse held regarding handling time. The findings collectively indicated that 3-instar M. basalis larvae have greater potential than 2-instar as efficient biological control agent of P. solenopsis. In developing real world biological control programs, however, the 2-instar M. basalis may be released if necessary since the final efficacy of the predator is the summation of the 2- and 3-instar M. basalis.
ISSN:1226-8615
1876-7990
DOI:10.1016/j.aspen.2021.08.005