Agritrop
Home

Quantitative genetics of the Desert Locust's larval growth: Rate and life-history strategy : PS3M358 Ecology

Pélissié Benjamin, Chapuis Marie Pierre, Pagès Christine, Piou Cyril. 2012. Quantitative genetics of the Desert Locust's larval growth: Rate and life-history strategy : PS3M358 Ecology. In : XXIV International Congress of Entomology (ICE 2012), Daegu, Korea, August 19-25, 2012. s.l. : s.n., Résumé, 1 p. International Congress of Entomology. 24, Daegu, Corée du Sud, 19 August 2012/25 August 2012.

Poster
[img]
Preview
Published version - Anglais
Use under authorization by the author or CIRAD.
document_568185.pdf

Télécharger (33kB) | Preview
[img]
Preview
Published version - Anglais
Use under authorization by the author or CIRAD.
document_568185.pdf

Télécharger (6MB) | Preview

Matériel d'accompagnement : 1 poster

Abstract : Schistocerca gregaria, the desert locust, which is distributed from north-west Africa to south-east Asia, is one of the most known and studied locust species. In order to prevent local human populations from the threat of pullulations, we need to know more about population dynamics of the desert locust, especially for the solitarious populations which are less studied than gregarious ones. Predicting the evolution of population dynamics needs a good knowledge of life-history traits that influence population demography. Growth is one of these traits, since it is directly linked to the onset of sexual maturity, then reproduction. Moreover, in order to investigate the potential of selection on individual growth, one needs to evaluate its heritability by disentangling genetic and additive variation in traits phenotype from non-genetic variance due to other (environmental) factors. Here we present a work done on a first generation lab population of S. gregaria sampled in the field. We recorded individual larval growth of 15 full-sib families, based on body weight and morphology in controlled conditions. We describe larval growth by analyzing growth rate as well as several key variables involved in life-history strategy (body weight and size at emergence, growth rate until adult emergence, maximum body weight, age at adult emergence, larval strategy). Thanks to the known relatedness structure of our sample, we also calculate the heritability of those traits and make predictions about the ability of S. gregaria populations to respond to selection on larval growth. (Résumé d'auteur)

Classification Agris : H10 - Pests of plants

Auteurs et affiliations

  • Pélissié Benjamin, CIRAD-BIOS-UPR Bioagresseurs (FRA)
  • Chapuis Marie Pierre, CIRAD-BIOS-UPR Bioagresseurs (FRA)
  • Pagès Christine, CIRAD-BIOS-UPR Bioagresseurs (FRA)
  • Piou Cyril, CIRAD-BIOS-UPR Bioagresseurs (FRA) ORCID: 0000-0002-9378-9404

Source : Cirad - Agritrop (https://agritrop.cirad.fr/568185/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2021-02-09 ]