Advanced search
1 file | 413.16 KB

Prey consumption by phytoseiid spider mite predators as affected by diurnal temperature variations

(2015) BIOCONTROL. 60(5). p.595-603
Author
Organization
Abstract
The consumption rate of an ectothermic predator is highly temperature-dependent and is a key driver of pest-predator population interactions. Not only average daily temperature, but also diurnal temperature variations may affect prey consumption and life history traits of ectotherms. In the present study, we evaluated the impact of temperature alternations on body size, predation capacity and oviposition rate of the predatory mites Phytoseiulus persimilis Athias-Henriot and Neoseiulus californicus McGregor (Acari: Phytoseiidae) when presented with eggs of their natural prey, the two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae). For both predators, mean daily temperature as well as temperature alternation had a substantial impact on the number of prey consumed. At lower average temperatures, more eggs were killed under an alternating temperature regime (20 A degrees C/5 A degrees C and 25 A degrees C/10 A degrees C) than at the corresponding mean constant temperatures (15 and 20 A degrees C). At higher average temperatures (> 25 A degrees C), however, the opposite was observed with higher numbers of prey killed at constant temperatures than at alternating temperatures. At 25 A degrees C, temperature variation had no effect on the predation capacity. A similar trend as for the predation rates was observed for the oviposition rates of the phytoseiids. Body size of N. californicus was affected both by average daily temperature and temperature variation, with smaller adult females emerging at alternating temperatures than at constant temperatures, whereas for P. persimilis, temperature variation had no impact on its body size. Our results demonstrate that temperature variations are likely to affect biological control of T. urticae by the studied phytoseiid predators.
Keywords
Phytoseiidae, Diurnal temperature range, Tetranychidae, Predation, Temperature size rule, Biological control, NEOSEIULUS-CALIFORNICUS ACARI, TETRANYCHUS-URTICAE, ALTERNATING TEMPERATURES, INTRAGUILD PREDATION, FLUCTUATING TEMPERATURES, CONSTANT TEMPERATURES, POPULATION-DYNAMICS, TYPHLODROMUS-PYRI, IMMATURE STAGES, LIFE-HISTORY

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 413.16 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Vangansbeke, Dominiek, Tùng Nguyen Dúc, Joachim Audenaert, Ruth Verhoeven, Bruno Gobin, Luc Tirry, and Patrick De Clercq. 2015. “Prey Consumption by Phytoseiid Spider Mite Predators as Affected by Diurnal Temperature Variations.” Biocontrol 60 (5): 595–603.
APA
Vangansbeke, D., Nguyen Dúc, T., Audenaert, J., Verhoeven, R., Gobin, B., Tirry, L., & De Clercq, P. (2015). Prey consumption by phytoseiid spider mite predators as affected by diurnal temperature variations. BIOCONTROL, 60(5), 595–603.
Vancouver
1.
Vangansbeke D, Nguyen Dúc T, Audenaert J, Verhoeven R, Gobin B, Tirry L, et al. Prey consumption by phytoseiid spider mite predators as affected by diurnal temperature variations. BIOCONTROL. 2015;60(5):595–603.
MLA
Vangansbeke, Dominiek, Tùng Nguyen Dúc, Joachim Audenaert, et al. “Prey Consumption by Phytoseiid Spider Mite Predators as Affected by Diurnal Temperature Variations.” BIOCONTROL 60.5 (2015): 595–603. Print.
@article{7001119,
  abstract     = {The consumption rate of an ectothermic predator is highly temperature-dependent and is a key driver of pest-predator population interactions. Not only average daily temperature, but also diurnal temperature variations may affect prey consumption and life history traits of ectotherms. In the present study, we evaluated the impact of temperature alternations on body size, predation capacity and oviposition rate of the predatory mites Phytoseiulus persimilis Athias-Henriot and Neoseiulus californicus McGregor (Acari: Phytoseiidae) when presented with eggs of their natural prey, the two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae). For both predators, mean daily temperature as well as temperature alternation had a substantial impact on the number of prey consumed. At lower average temperatures, more eggs were killed under an alternating temperature regime (20 A degrees C/5 A degrees C and 25 A degrees C/10 A degrees C) than at the corresponding mean constant temperatures (15 and 20 A degrees C). At higher average temperatures ({\textrangle} 25 A degrees C), however, the opposite was observed with higher numbers of prey killed at constant temperatures than at alternating temperatures. At 25 A degrees C, temperature variation had no effect on the predation capacity. A similar trend as for the predation rates was observed for the oviposition rates of the phytoseiids. Body size of N. californicus was affected both by average daily temperature and temperature variation, with smaller adult females emerging at alternating temperatures than at constant temperatures, whereas for P. persimilis, temperature variation had no impact on its body size. Our results demonstrate that temperature variations are likely to affect biological control of T. urticae by the studied phytoseiid predators.},
  author       = {Vangansbeke, Dominiek and Nguyen D{\'u}c, T{\`u}ng and Audenaert, Joachim and Verhoeven, Ruth and Gobin, Bruno and Tirry, Luc and De Clercq, Patrick},
  issn         = {1386-6141},
  journal      = {BIOCONTROL},
  keyword      = {Phytoseiidae,Diurnal temperature range,Tetranychidae,Predation,Temperature size rule,Biological control,NEOSEIULUS-CALIFORNICUS ACARI,TETRANYCHUS-URTICAE,ALTERNATING TEMPERATURES,INTRAGUILD PREDATION,FLUCTUATING TEMPERATURES,CONSTANT TEMPERATURES,POPULATION-DYNAMICS,TYPHLODROMUS-PYRI,IMMATURE STAGES,LIFE-HISTORY},
  language     = {eng},
  number       = {5},
  pages        = {595--603},
  title        = {Prey consumption by phytoseiid spider mite predators as affected by diurnal temperature variations},
  url          = {http://dx.doi.org/10.1007/s10526-015-9677-0},
  volume       = {60},
  year         = {2015},
}

Altmetric
View in Altmetric
Web of Science
Times cited: