Sublethal insecticide exposure of an herbivore alters the response of its predator

Müller T, Gesing MA, Segeler M, Müller C (2019)
Environmental Pollution 247: 39-45.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Sublethal insecticide exposure poses risks for many non-target organisms and is a challenge for successful implementation of integrated pest management (IPM) programs. Next to detrimental effects of short-term insecticide exposure on fitness-related traits of organisms, also properties such as chemical signaling traits can be altered, which mediate intra- and interspecific communication. We investigated the effects of different durations of larval sublethal exposure to the pyrethroid lambda-cyhalothrin on performance traits of larvae and adults of the herbivorous mustard leaf beetle, Phaedon cochleariae. Moreover, by applying a direct contact and olfactometer bioassays, we determined the reaction of a generalist predator, the ant Myrmica rubra, towards insecticide-exposed and unexposed herbivore larvae and their secretions. Already short-term sublethal insecticide exposure of a few days caused a prolonged larval development and a reduced adult body mass of males. These effects may result from an insecticide-induced reduction in energy reserves. Furthermore, ants responded more frequently to insecticide-exposed than to unexposed larvae of P. cochleariae and their secretions. This increased responsiveness of ants towards insecticide-exposed larvae may be due to an insecticide-induced change in synthesis of chrysomelidial and epichrysomelidial, the dominant compounds of the larval secretion, which act defensive against various generalist predators. In conclusion, the results highlight that short-term insecticide exposure can impair the fitness of an herbivorous species due to both direct toxic effects and an increased responsiveness of predators. Consequently, exposure of single non-target species can have consequences for ecological communities in both natural habitats and IPM programs.
Stichworte
iinsecticide carry-over; Integrated pest management; Lambda-cyhalothrin; Myrmica rubra; Phaedon cochleariae; pyrethroid
Erscheinungsjahr
2019
Zeitschriftentitel
Environmental Pollution
Band
247
Seite(n)
39-45
ISSN
0269-7491
Page URI
https://pub.uni-bielefeld.de/record/2932662

Zitieren

Müller T, Gesing MA, Segeler M, Müller C. Sublethal insecticide exposure of an herbivore alters the response of its predator. Environmental Pollution. 2019;247:39-45.
Müller, T., Gesing, M. A., Segeler, M., & Müller, C. (2019). Sublethal insecticide exposure of an herbivore alters the response of its predator. Environmental Pollution, 247, 39-45. doi:10.1016/j.envpol.2018.12.040
Müller, T., Gesing, M. A., Segeler, M., and Müller, C. (2019). Sublethal insecticide exposure of an herbivore alters the response of its predator. Environmental Pollution 247, 39-45.
Müller, T., et al., 2019. Sublethal insecticide exposure of an herbivore alters the response of its predator. Environmental Pollution, 247, p 39-45.
T. Müller, et al., “Sublethal insecticide exposure of an herbivore alters the response of its predator”, Environmental Pollution, vol. 247, 2019, pp. 39-45.
Müller, T., Gesing, M.A., Segeler, M., Müller, C.: Sublethal insecticide exposure of an herbivore alters the response of its predator. Environmental Pollution. 247, 39-45 (2019).
Müller, Thorben, Gesing, MA, Segeler, M, and Müller, Caroline. “Sublethal insecticide exposure of an herbivore alters the response of its predator”. Environmental Pollution 247 (2019): 39-45.

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