Article Dans Une Revue Apidologie Année : 2017

Cytogenetic basis of thelytoky in Apis mellifera capensis

Miles P. Cole-Clark
  • Fonction : Auteur
Deborah A. Barton
  • Fonction : Auteur
Michael H. Allsopp
  • Fonction : Auteur
Madeleine Beekman
  • Fonction : Auteur
Rosalyn S. Gloag
  • Fonction : Auteur
Theresa C. Wossler
  • Fonction : Auteur
Isobel Ronai
  • Fonction : Auteur
Nicholas Smith
  • Fonction : Auteur
Rebecca J. Reid
  • Fonction : Auteur
Benjamin P. Oldroyd
  • Fonction : Auteur

Résumé

AbstractHaplodiploid insects reproduce both sexually and asexually; haploid males arise from unfertilized eggs, while diploid females arise from fertilized eggs. Some species can also produce female offspring by thelytokous parthenogenesis. For example, queenless workers of the Cape honey bee, Apis mellifera capensis, of South Africa can produce diploid female offspring from unfertilized eggs. Genetic evidence suggests that in A. m. capensis, diploidy is restored in zygotes by the fusion of two maternal pronuclei, the haploid descendants of the two alternate products of meiosis I. Here, we confirm this genetic evidence by direct cytological observation of pronucleus fusion. We also provide a description of how the fusion occurs at 4.5–5 h post oviposition and describe the meiotic events that lead up to and follow the fusion. Finally, we document numerous departures from the typical meiotic patterns, which likely explain some of the anomalous A. m. capensis individuals that have been previously identified genetically.

Fichier principal
Vignette du fichier
springer.pdf (3.82 Mo) Télécharger le fichier
Origine Publication financée par une institution
Licence
Loading...

Dates et versions

hal-02973430 , version 1 (21-10-2020)

Licence

Identifiants

Citer

Miles P. Cole-Clark, Deborah A. Barton, Michael H. Allsopp, Madeleine Beekman, Rosalyn S. Gloag, et al.. Cytogenetic basis of thelytoky in Apis mellifera capensis. Apidologie, 2017, 48 (5), pp.623-634. ⟨10.1007/s13592-017-0505-7⟩. ⟨hal-02973430⟩
53 Consultations
78 Téléchargements

Altmetric

Partager

  • More