Poster (Scientific congresses and symposiums)
Tuta absoluta (Lepidoptera: Gelechiidae) ability to develop on potato tubers
Bawin, Thomas; De Backer, Lara; Yarou, Boni Barthélémy et al.
201623rd Congress of Zoology
 

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Keywords :
Insect-host interaction; Scrobipalpuloides absoluta; Solanaceae; Solanum tuberosum; Potato tuber
Abstract :
[en] Tuta absoluta (Lepidoptera: Gelechiidae) is a widespread pest that threatens commercial production of solanaceous crops. Larvae feed on the mesophyll of all aerial parts of the plants resulting in significant yield losses and cosmetic damages.It is classically assumed that underground plant parts are not affected but larval development on potato tubers has recently been suspected. However, this assumption is poorly supported in the literature. Potato tubers might represent an unsuspected mean of persistence and dispersal in agricultural environments.Oviposition tests were here conducted using dormant and active (sprouts less than 5 cm) potato tubers in net cages. Oviposition only occurred on the sprouts of active tubers, supporting larval growth until adult emergency. Tuber dissection revealed burrows starting from sprouts inside the flesh. Additional fitness assays were conducted on non-sprouted tubers and revealed that first instar larvae were able to enter the skin and create burrows, living inside and feeding on potato flesh, although none of them survived.
Disciplines :
Entomology & pest control
Author, co-author :
Bawin, Thomas ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Entomologie fonctionnelle et évolutive
De Backer, Lara ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Entomologie fonctionnelle et évolutive
Yarou, Boni Barthélémy ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Entomologie fonctionnelle et évolutive
Francis, Frédéric  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Entomologie fonctionnelle et évolutive
Verheggen, François  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Entomologie fonctionnelle et évolutive
Language :
English
Title :
Tuta absoluta (Lepidoptera: Gelechiidae) ability to develop on potato tubers
Publication date :
16 December 2016
Event name :
23rd Congress of Zoology
Event place :
Antwerp, Belgium
Event date :
15 – 17 December 2016
Audience :
International
Available on ORBi :
since 23 December 2016

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