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Chromatic Polymorphism and Geophagy : two Outstanding Characteristics of Rhammatocerus schistocercoides (Rehn 1906) Grasshoppers in Brazil Orthoptera, Acrididae, Gomphocerinae

Lecoq Michel, Pierozzi I.. 1996. Chromatic Polymorphism and Geophagy : two Outstanding Characteristics of Rhammatocerus schistocercoides (Rehn 1906) Grasshoppers in Brazil Orthoptera, Acrididae, Gomphocerinae. Journal of Orthoptera Research (5) : pp. 13-17.

Journal article ; Notoriété en attente de mise à jour
Full text not available from this repository.

Autre titre : Polymorphisme chromatique et geophagie : deux caractéristiques remarquables des criquets Rhammatocerus schistocercoides (Rehn 1906) au Brésil Orthoptera, Acrididae, Gomphocerinae

Abstract : A study of coloration in #Rhammatocerus schistocercoides# (Rehn 1906) grasshoppers in natural conditions revealed substantial variability, with evidence of a new case of chromatic polymorphism. Green coloration is much more common in this species than previously assumed. The percentage of green adults, or those with a partially green integument,varied seasonally within the same generation according to the phenology and especially the sexual maturity of the population. The most important coloration change occurred in September, during the sexual maturation period, when the grasshopp- ers turned progressively from brown to green or partially green. The present study also highlights evidence of a geophagy phenomenon (consumption of large amounts of soil) that has never before been reported in locusts or grasshoppers. This yet unexplainable behaviour was particularly spectacular in terms of its scale. (Résumé d'auteur)

Mots-clés Agrovoc : Rhammatocerus, Polymorphisme, Couleur, Variation saisonnière

Mots-clés géographiques Agrovoc : Brésil, Mato Grosso

Classification Agris : L52 - Animal physiology - Growth and development
H10 - Pests of plants

Auteurs et affiliations

  • Lecoq Michel, CIRAD-GERDAT-PRIFAS (FRA)
  • Pierozzi I.

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/389779/)

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