Article (Scientific journals)
Structure and distribution of the sensilla on the antennae of Tuta absoluta (Lepidoptera: Gelechiidae)
Bawin, Thomas; Collard, France; De Backer, Lara et al.
2017In Micron, 96, p. 16-28
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Keywords :
Scrobipalpuloides absoluta; Olfaction; Reception; Sex pheromone; Plant volatile compound
Abstract :
[en] The tomato leafminer, Tuta absoluta (Lepidoptera: Gelechiidae), is a widespread devastating pest that develops on tomato and other economically important solanaceous crops. Current semiochemically-based management strategies still fail to significantly reduce damages and need to be improved. Here we describe under scanning and transmission electron microscopy the structure and distribution of the sensilla that are displayed on adult antennae. These were similar in size between males (3424.4 ± 135.3 μm) and females (3292.1 ± 111.5 μm), being segmented into a scape, a pedicel, and a distal filiform flagellum. Eight morphological sensilla types were observed on both sexes: Böhm’s bristles, sensilla squamiformia, sensilla trichodea, sensilla basiconica (two subtypes), sensilla chaetica, sensilla coeloconica, sensilla auricillica, and sensilla styloconica. The main sexual dimorphism was related to the higher abundance of sensilla trichodea in males, twice as abundant as in females. The putative functional significance of the different sensilla types regarding the insect ecology is discussed based on the available literature. This work provides descriptions of the antennae and related sensory structures. We expect these results to help develop further electrophysiological investigations aiming to a better understanding of T. absoluta olfaction.
Disciplines :
Entomology & pest control
Author, co-author :
Bawin, Thomas ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Entomologie fonctionnelle et évolutive
Collard, France  ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
De Backer, Lara ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol.
Yarou, Boni Barthélémy ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol. (Paysage)
Compère, Philippe ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Morphologie 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 :
Structure and distribution of the sensilla on the antennae of Tuta absoluta (Lepidoptera: Gelechiidae)
Publication date :
01 February 2017
Journal title :
Micron
ISSN :
0968-4328
eISSN :
1878-4291
Publisher :
Pergamon Press - An Imprint of Elsevier Science
Volume :
96
Pages :
16-28
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
SPW DG03-DGARNE - Service Public de Wallonie. Direction Générale Opérationnelle Agriculture, Ressources naturelles et Environnement [BE]
Available on ORBi :
since 21 February 2017

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