Gregarines modulate insect responses to sublethal insecticide residues

Wolz M, Schrader A, Whitelaw E, Müller C (2022)
Oecologia 198(1): 255-265.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Wolz, MarinaUniBi; Schrader, Alia; Whitelaw, Eileen; Müller, CarolineUniBi
Abstract / Bemerkung
**Abstract**
Throughout their lifetime, insects face multiple environmental challenges that influence their performance. Gregarines are prevalent endoparasites in most invertebrates that affect the fitness of their hosts, but are often overlooked in ecological studies. Next to such biotic factors, a current common challenge is anthropogenic pollution with pesticides, which causes a major threat to non-target organisms that are readily exposed to lethal or sublethal concentrations. In a laboratory study, we investigated whether the presence of gregarines modulates the food consumption and life history traits of a (non-target) leaf beetle species,Phaedon cochleariae, in response to sublethal insecticide exposure. We show that the larval food consumption of the herbivore was neither affected by gregarine infection nor sublethal insecticide exposure. Nevertheless, infection with gregarines led to a delayed development, while insecticide exposure resulted in a lower body mass of adult males and a reduced reproduction of females. Individuals exposed to both challenges suffered most, as they had the lowest survival probability. This indicates detrimental effects on the population dynamics of non-target insects infected with naturally occurring gregarines that face additional stress from agrochemical pollution. Moreover, we found that the infection load with gregarines was higher in individuals exposed to sublethal insecticide concentrations compared to unexposed individuals. To counteract the global decline of insects, the potential of natural parasite infections in modulating insect responses to anthropogenic and non-anthropogenic environmental factors should be considered in ecological risk assessment.
Stichworte
Combined challenges · Fitness · Gregarines · Leaf beetle · Pyrethroid
Erscheinungsjahr
2022
Zeitschriftentitel
Oecologia
Band
198
Ausgabe
1
Seite(n)
255-265
ISSN
0029-8549
eISSN
1432-1939
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld im Rahmen des DEAL-Vertrags gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2959729

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Wolz M, Schrader A, Whitelaw E, Müller C. Gregarines modulate insect responses to sublethal insecticide residues. Oecologia. 2022;198(1):255-265.
Wolz, M., Schrader, A., Whitelaw, E., & Müller, C. (2022). Gregarines modulate insect responses to sublethal insecticide residues. Oecologia, 198(1), 255-265. https://doi.org/10.1007/s00442-021-05086-4
Wolz, Marina, Schrader, Alia, Whitelaw, Eileen, and Müller, Caroline. 2022. “Gregarines modulate insect responses to sublethal insecticide residues”. Oecologia 198 (1): 255-265.
Wolz, M., Schrader, A., Whitelaw, E., and Müller, C. (2022). Gregarines modulate insect responses to sublethal insecticide residues. Oecologia 198, 255-265.
Wolz, M., et al., 2022. Gregarines modulate insect responses to sublethal insecticide residues. Oecologia, 198(1), p 255-265.
M. Wolz, et al., “Gregarines modulate insect responses to sublethal insecticide residues”, Oecologia, vol. 198, 2022, pp. 255-265.
Wolz, M., Schrader, A., Whitelaw, E., Müller, C.: Gregarines modulate insect responses to sublethal insecticide residues. Oecologia. 198, 255-265 (2022).
Wolz, Marina, Schrader, Alia, Whitelaw, Eileen, and Müller, Caroline. “Gregarines modulate insect responses to sublethal insecticide residues”. Oecologia 198.1 (2022): 255-265.
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2022-08-02T07:55:49Z
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