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Functional response of two Neoseiulus species preying on Tetranychus urticae Koch

Yuan Zheng, Patrick De Clercq (UGent) , Ziwei Song (UGent) , Dun-Song Li and Bao-Xin Zhang
(2017) SYSTEMATIC AND APPLIED ACAROLOGY. 22(7). p.1059-1068
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Abstract
Neoseiulus californicus and N. cucumeris are both potential candidates for the biological control of key pests in China. Whereas N. californicus has mainly been used to control spider mites, N. cucumeris has been released for the control of thrips and spider mites. To understand the potential of the combined use of N. californicus and N. cucumeris to suppress outbreaks of Tetranychus urticae, the predatory performance of these Neoseiulus species against different stages of T. urticae, either separately or in combination, was evaluated by assessing their functional responses in the laboratory. The values of the attack rate coefficient (alpha) of N. californicus to each stage of T. urticae exceeded those of N. cucumeris, whereas the handling time (T-h) of N. californicus was longer than that of N. cucumeris, except when attacking the larvae of T. urticae. Especially at the higher prey densities, N. cucumeris consumed more eggs per day than N. californicus, whereas N. californicus consumed more larvae. Both predators killed similar numbers of nymphs at each density when tested singly. The searching efficiency of the Neoseiulus species decreased with increasing prey densities, and for all stages of T. urticae, the searching efficiency of the Neoseiulus species tested singly was lower than when they were tested together. The study indicates the potential of mixed releases of N. californicus and N. cucumeris for the management of spider mite infestations.
Keywords
two-spotted spider mite, Neoseiulus californicus, Neoseiulus cucumeris, searching efficiency, PHYTOSEIID MITES ACARI, 2-SPOTTED SPIDER-MITES, BIOLOGICAL-CONTROL, CUCUMERIS OUDEMANS, CALIFORNICUS, PREDATOR, CONSUMPTION, SINGLE, STRAWBERRIES, HETEROPTERA

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MLA
Zheng, Yuan, et al. “Functional Response of Two Neoseiulus Species Preying on Tetranychus Urticae Koch.” SYSTEMATIC AND APPLIED ACAROLOGY, vol. 22, no. 7, 2017, pp. 1059–68, doi:10.11158/saa.22.7.13.
APA
Zheng, Y., De Clercq, P., Song, Z., Li, D.-S., & Zhang, B.-X. (2017). Functional response of two Neoseiulus species preying on Tetranychus urticae Koch. SYSTEMATIC AND APPLIED ACAROLOGY, 22(7), 1059–1068. https://doi.org/10.11158/saa.22.7.13
Chicago author-date
Zheng, Yuan, Patrick De Clercq, Ziwei Song, Dun-Song Li, and Bao-Xin Zhang. 2017. “Functional Response of Two Neoseiulus Species Preying on Tetranychus Urticae Koch.” SYSTEMATIC AND APPLIED ACAROLOGY 22 (7): 1059–68. https://doi.org/10.11158/saa.22.7.13.
Chicago author-date (all authors)
Zheng, Yuan, Patrick De Clercq, Ziwei Song, Dun-Song Li, and Bao-Xin Zhang. 2017. “Functional Response of Two Neoseiulus Species Preying on Tetranychus Urticae Koch.” SYSTEMATIC AND APPLIED ACAROLOGY 22 (7): 1059–1068. doi:10.11158/saa.22.7.13.
Vancouver
1.
Zheng Y, De Clercq P, Song Z, Li D-S, Zhang B-X. Functional response of two Neoseiulus species preying on Tetranychus urticae Koch. SYSTEMATIC AND APPLIED ACAROLOGY. 2017;22(7):1059–68.
IEEE
[1]
Y. Zheng, P. De Clercq, Z. Song, D.-S. Li, and B.-X. Zhang, “Functional response of two Neoseiulus species preying on Tetranychus urticae Koch,” SYSTEMATIC AND APPLIED ACAROLOGY, vol. 22, no. 7, pp. 1059–1068, 2017.
@article{8544001,
  abstract     = {{Neoseiulus californicus and N. cucumeris are both potential candidates for the biological control of key pests in China. Whereas N. californicus has mainly been used to control spider mites, N. cucumeris has been released for the control of thrips and spider mites. To understand the potential of the combined use of N. californicus and N. cucumeris to suppress outbreaks of Tetranychus urticae, the predatory performance of these Neoseiulus species against different stages of T. urticae, either separately or in combination, was evaluated by assessing their functional responses in the laboratory. The values of the attack rate coefficient (alpha) of N. californicus to each stage of T. urticae exceeded those of N. cucumeris, whereas the handling time (T-h) of N. californicus was longer than that of N. cucumeris, except when attacking the larvae of T. urticae. Especially at the higher prey densities, N. cucumeris consumed more eggs per day than N. californicus, whereas N. californicus consumed more larvae. Both predators killed similar numbers of nymphs at each density when tested singly. The searching efficiency of the Neoseiulus species decreased with increasing prey densities, and for all stages of T. urticae, the searching efficiency of the Neoseiulus species tested singly was lower than when they were tested together. The study indicates the potential of mixed releases of N. californicus and N. cucumeris for the management of spider mite infestations.}},
  author       = {{Zheng, Yuan and De Clercq, Patrick and Song, Ziwei and Li, Dun-Song and Zhang, Bao-Xin}},
  issn         = {{1362-1971}},
  journal      = {{SYSTEMATIC AND APPLIED ACAROLOGY}},
  keywords     = {{two-spotted spider mite,Neoseiulus californicus,Neoseiulus cucumeris,searching efficiency,PHYTOSEIID MITES ACARI,2-SPOTTED SPIDER-MITES,BIOLOGICAL-CONTROL,CUCUMERIS OUDEMANS,CALIFORNICUS,PREDATOR,CONSUMPTION,SINGLE,STRAWBERRIES,HETEROPTERA}},
  language     = {{eng}},
  number       = {{7}},
  pages        = {{1059--1068}},
  title        = {{Functional response of two Neoseiulus species preying on Tetranychus urticae Koch}},
  url          = {{http://doi.org/10.11158/saa.22.7.13}},
  volume       = {{22}},
  year         = {{2017}},
}
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