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Author (up) Zannou, E.T.; Glitho, I.A.; Huignard, J.; Monge, J.P. url  openurl
  Title Life history of flight morph females of Callosobruchus maculatus F.: evidence of a reproductive diapause Type Journal Article
  Year 2003 Publication Journal of Insect Physiology Abbreviated Journal J Insect Physiol  
  Volume 49 Issue 6 Pages 575-582  
  Keywords Adaptation, Physiological; Animals; Beetles/anatomy & histology/*growth & development/*physiology; Crops, Agricultural/growth & development/parasitology; Female; Fertility/physiology; Flight, Animal/*physiology; Hemolymph/metabolism; Life Cycle Stages/*physiology; Ovary/anatomy & histology/physiology; Oviposition; Phenotype; Reproduction/*physiology  
  Abstract Callosobruchus maculatus (F.) (Coleoptera : Bruchidae) is a tropical beetle that develops in the seeds of Vigna unguiculata. C. maculatus adults show an imaginal polymorphism with differences in morphological, behavioral and reproductive characteristics. Adults of the flight morph that emerge in cowpea storage systems were studied under natural climatic conditions. A large number of the flight morph females were in reproductive diapause and had a long imaginal life. These females did not synthesize vitellogenin, produced a specific diapause protein and possessed significant protein reserves. This suggests that the beetles survived in the tropical ecosystem for a long time and colonized the crops during the cowpea growing and flowering phases. Analysis of reproductive activity in females captured in the V. unguiculata crops indicates that they terminated their reproductive diapause and began to lay eggs as soon as the pods were formed. Few females of the flight morph were sexually active at the beginning of imaginal life. In this paper we discuss the adaptive significance of these two reproductive strategies in females of C. maculatus.  
  Address Faculte des Sciences, Universite du Benin, BP 1515, Lome, Togo, France  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0022-1910 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:12804717 Approved no  
  Call Number ASU @ Lara.Ferry @ Serial 42  
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