Parental crowding influences life-history traits in Locusta migratoria females

Chapuis Marie-Pierre, Crespin Laurent, Estoup Arnaud, Augé-Sabatier Arnaud, Foucart Antoine, Lecoq Michel, Michalakis Yannis. 2010. Parental crowding influences life-history traits in Locusta migratoria females. Bulletin of Entomological Research, 100 (1) : 9-17.

Quartile : Q1, Sujet : ENTOMOLOGY

Liste HCERES des revues (en SHS) : oui

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

Résumé : Parental environments could play an important role in controlling insect outbreaks, provided they influence changes in physiological, developmental or behavioural life-history traits related to fluctuations in population density. However, the potential implication of parental influence in density-related changes in life-history traits remains unclear in many insects that exhibit fluctuating population dynamics, particularly locusts. In this study, we report a laboratory experiment, which enabled us to characterize the life-history trait modifications induced by parental crowding of female individuals from a frequently outbreaking population of Locusta migratoria (Linnaeus) (Orthoptera: Acrididae). We found that a rearing history of crowding led to reduced female oviposition times and increased offspring size but did not affect the developmental time, survival, fecundity, and the sex-ratio and the number of offspring. Because all studied females were raised in a common environment (isolation conditions), these observed reproductive differences are due to trans-generational effects induced by density. We discuss the ecological and evolutionary implications of the observed density-dependent parental effects on the life-history of L. migratoria..

Mots-clés Agrovoc : Locusta migratoria, comportement animal, densité de population, femelle, reproduction sexuée, cycle de développement, facteur du milieu, expérimentation en laboratoire, Enquête organismes nuisibles

Mots-clés géographiques Agrovoc : Madagascar

Classification Agris : H10 - Ravageurs des plantes

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

Auteurs et affiliations

• Chapuis Marie-Pierre, Montpellier SupAgro (FRA)
• Crespin Laurent, INRA (FRA)
• Estoup Arnaud, INRA (FRA)
• Augé-Sabatier Arnaud, INRA (FRA)
• Foucart Antoine, CIRAD-BIOS-UPR Acridologie (FRA)
• Lecoq Michel, CIRAD-BIOS-UPR Acridologie (FRA)
• Michalakis Yannis, CNRS (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/553990/)

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