Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii

Toxopeus J, Jakobs R, Ferguson LV, Gariepy TD, Sinclair BJ (2016)
JOURNAL OF INSECT PHYSIOLOGY 89: 37-51.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Toxopeus, Jantina; Jakobs, RuthUniBi; Ferguson, Laura V.; Gariepy, Tara D.; Sinclair, Brent J.
Abstract / Bemerkung
Overwintering insects must survive the multiple-stress environment of winter, which includes low temperatures, reduced food and water availability, and cold-active pathogens. Many insects overwinter in diapause, a developmental arrest associated with high stress tolerance. Drosophila suzukii (Diptera: Drosophilidae), spotted wing drosophila, is an invasive agricultural pest worldwide. Its ability to overwinter and therefore establish in temperate regions could have severe implications for fruit crop industries. We demonstrate here that laboratory populations of Canadian D. suzukii larvae reared under short-day, low temperature, conditions develop into dark 'winter morph' adults similar to those reported globally from field captures, and observed by us in southern Ontario, Canada. These winter-acclimated adults have delayed reproductive maturity, enhanced cold tolerance, and can remain active at low temperatures, although they do not have the increased desiccation tolerance or survival of fungal pathogen challenges that might be expected from a more heavily melanised cuticle. Winter-acclimated female D. suzukii have underdeveloped ovaries and altered transcript levels of several genes associated with reproduction and stress. While superficially indicative of reproductive diapause, the delayed reproductive maturity of winter-acclimated D. suzukii appears to be temperature-dependent, not regulated by photoperiod, and is thus unlikely to be 'true' diapause. The traits of this 'winter morph', however, likely facilitate overwintering in southern Canada, and have probably contributed to the global success of this fly as an invasive species. (C) 2016 Elsevier Ltd. All rights reserved.
Stichworte
Spotted wing drosophila; Winter morph; Reproductive diapause; Stress; tolerance; Overwintering
Erscheinungsjahr
2016
Zeitschriftentitel
JOURNAL OF INSECT PHYSIOLOGY
Band
89
Seite(n)
37-51
ISSN
0022-1910
eISSN
1879-1611
Page URI
https://pub.uni-bielefeld.de/record/2904068

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Toxopeus J, Jakobs R, Ferguson LV, Gariepy TD, Sinclair BJ. Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii. JOURNAL OF INSECT PHYSIOLOGY. 2016;89:37-51.
Toxopeus, J., Jakobs, R., Ferguson, L. V., Gariepy, T. D., & Sinclair, B. J. (2016). Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii. JOURNAL OF INSECT PHYSIOLOGY, 89, 37-51. doi:10.1016/j.jinsphys.2016.03.006
Toxopeus, J., Jakobs, R., Ferguson, L. V., Gariepy, T. D., and Sinclair, B. J. (2016). Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii. JOURNAL OF INSECT PHYSIOLOGY 89, 37-51.
Toxopeus, J., et al., 2016. Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii. JOURNAL OF INSECT PHYSIOLOGY, 89, p 37-51.
J. Toxopeus, et al., “Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii”, JOURNAL OF INSECT PHYSIOLOGY, vol. 89, 2016, pp. 37-51.
Toxopeus, J., Jakobs, R., Ferguson, L.V., Gariepy, T.D., Sinclair, B.J.: Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii. JOURNAL OF INSECT PHYSIOLOGY. 89, 37-51 (2016).
Toxopeus, Jantina, Jakobs, Ruth, Ferguson, Laura V., Gariepy, Tara D., and Sinclair, Brent J. “Reproductive arrest and stress resistance in winter-acclimated Drosophila suzukii”. JOURNAL OF INSECT PHYSIOLOGY 89 (2016): 37-51.

20 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

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