Evolution of the cercal sensory system in a tropical cricket clade (Orthoptera: Grylloidea: Eneopterinae): A phylogenetic approach

Desutter-Grandcolas Laure, Blanchet Elodie, Robillard Tony, Magal Christelle, Vannier Fabrice, Dangles Olivier. 2010. Evolution of the cercal sensory system in a tropical cricket clade (Orthoptera: Grylloidea: Eneopterinae): A phylogenetic approach. Biological Journal of the Linnean Society, 99 (3) : 614-631.

Quartile : Q3, Sujet : EVOLUTIONARY BIOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : The diversity of sensory systems in animals has poorly been explored on a phylogenetic basis at the species level. We addressed this issue using cricket cerci, comprising abdominal appendages covered with touch- and airsensitive hairs. Scanning electron microscopy measurements and spatial analyses of hair positioning were used to quantify the structural diversity of cercal structures. Eighteen Eneopterinae and two Gryllidae (outgroups) were studied from a phylogenetic perspective. Cerci were revealed to be complex, diverse, and variable between cricket species. Based on maximum likelihood estimations, the ancestral Eneopterinae cercus had a small size, and its hair equipment allowed the use of both air and touch mechanoreception. The evolution of Eneopterinae cerci was mainly unconstrained by the phylogeny; it was rather a punctuated process, involving apical transformations, and was mostly unrelated to environmental patterns. All studied species have enhanced their overall perceptive capacities compared to the ancestor. Most have longer cerci with more and/or longer hairs. Sensory abilities have improved either in the direction of touch or air movement detection, or both, without discarding the potential for any sensory capacity that was already present ancestrally. This pattern is consistent with the hypothesis of an evolutionary trade-off for sensory performances.

Mots-clés Agrovoc : Gryllidae, Gryllus bimaculatus, Acheta domesticus, morphologie animale, physiologie sensorielle, organe des sens, phylogénie, évolution

Mots-clés complémentaires : Eneopterinae

Classification Agris : H10 - Ravageurs des plantes
L40 - Anatomie et morphologie des animaux
L50 - Physiologie et biochimie animales

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Desutter-Grandcolas Laure, MNHN (FRA)
• Blanchet Elodie, CIRAD-BIOS-UPR Acridologie (FRA)
• Robillard Tony, MNHN (FRA)
• Magal Christelle, IRBI [UMR 6035] (FRA)
• Vannier Fabrice, IRBI [UMR 6035] (FRA)
• Dangles Olivier, IRBI [UMR 6035] (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/553593/)

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