Drosophila suzukii (Matsumura, 1931), the spotted-wing drosophila, is a highly invasive fruit fly that spread from Southern Asia across most regions of Asia and, in the last 15 years, has invaded Europe and the Americas. It is an economically important pest of small fruits such as berries and stone fruits. Drosophila suzukii speciated by adapt ing to cooler, mountainous, and forest environments. In temperate regions, it evolved seasonal polyphenism traits which enhanced its survival during stressful winter population bottlenecks. Consequently, in these temperate regions, the populations undergo seasonal reproductive dynamics. Despite its economic importance, no data are available on the behavioural reproductive strategies of this fly. The presence of polyandry, for example, has not been determined despite the important role it might play in the reproductive dynamics of populations. We explored the presence of poly andry in an established population in Trentino, a region in northern Italy. In this area, D. suzukii overcomes the winter bottleneck and undergoes a seasonal reproductive fluctuation. We observed a high remating frequency in females during the late spring demographic explosion that led to the abundant summer population. The presence of a high degree of polyandry and shared paternity associated with the post-winter population increase raises the question of the possible evolutionary adaptive role of this reproductive behaviour in D. suzukii

Puppato, S.; Fiorenza, G.; Carraretto, D.; Gomulski, L.M.; Gasperi, G.; Caceres, C.; Grassi, A.; Mancini, M.V.; De Cristofaro, A.; Ioriatti, C.; Guilhot, R.; Malacrida, A.R. (2023). High promiscuity among females of the invasive pest species Drosophila suzukii. MOLECULAR ECOLOGY, 32 (22): 5891-6082. doi: 10.1111/mec.17161 handle: https://hdl.handle.net/10449/82215

High promiscuity among females of the invasive pest species Drosophila suzukii

Puppato, S.
Primo
;
Grassi, A.
Membro del Collaboration Group
;
Ioriatti, C.;
2023-01-01

Abstract

Drosophila suzukii (Matsumura, 1931), the spotted-wing drosophila, is a highly invasive fruit fly that spread from Southern Asia across most regions of Asia and, in the last 15 years, has invaded Europe and the Americas. It is an economically important pest of small fruits such as berries and stone fruits. Drosophila suzukii speciated by adapt ing to cooler, mountainous, and forest environments. In temperate regions, it evolved seasonal polyphenism traits which enhanced its survival during stressful winter population bottlenecks. Consequently, in these temperate regions, the populations undergo seasonal reproductive dynamics. Despite its economic importance, no data are available on the behavioural reproductive strategies of this fly. The presence of polyandry, for example, has not been determined despite the important role it might play in the reproductive dynamics of populations. We explored the presence of poly andry in an established population in Trentino, a region in northern Italy. In this area, D. suzukii overcomes the winter bottleneck and undergoes a seasonal reproductive fluctuation. We observed a high remating frequency in females during the late spring demographic explosion that led to the abundant summer population. The presence of a high degree of polyandry and shared paternity associated with the post-winter population increase raises the question of the possible evolutionary adaptive role of this reproductive behaviour in D. suzukii
Adaptation
Drosophila suzukii
Pest insect
Polyandry
Remating
Settore AGR/11 - ENTOMOLOGIA GENERALE E APPLICATA
2023
Puppato, S.; Fiorenza, G.; Carraretto, D.; Gomulski, L.M.; Gasperi, G.; Caceres, C.; Grassi, A.; Mancini, M.V.; De Cristofaro, A.; Ioriatti, C.; Guilhot, R.; Malacrida, A.R. (2023). High promiscuity among females of the invasive pest species Drosophila suzukii. MOLECULAR ECOLOGY, 32 (22): 5891-6082. doi: 10.1111/mec.17161 handle: https://hdl.handle.net/10449/82215
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