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Author (up) Effowe, T.Q.; Amevoin, K.; Nuto, Y.; Mondedji, D.; Glitho, I.A. url  doi
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  Title Reproductive capacities and development of a seed Bruchid beetle, Acanthoscelides macrophthalmus, a potential host for the mass rearing of the parasitoid, Dinarmus basalis Type Journal Article
  Year 2010 Publication Journal of Insect Science (Online) Abbreviated Journal J Insect Sci  
  Volume 10 Issue Pages 129  
  Keywords Animal Husbandry; Animals; Beetles/*growth & development/parasitology; Fabaceae/*parasitology; Female; Fertility; *Host-Parasite Interactions; Male; Oviposition; Population Dynamics; Seasons; Seeds/*parasitology; Sex Ratio; Togo; Wasps/physiology  
  Abstract The reproductive capacities and development of the seed beetle Acanthoscelides macrophthalmus (Schaeffer) (Coleoptera: Bruchidae), found in Togo, were determined under natural conditions in a Guinean zone for its use as a substitute host for the mass rearing of the parasitoid Dinarmus basalts Rond (Hymenoptera: Pteromalidae), a biological agent for the control of beetles that are pests of cowpea, Vigna unguiculata (L.) Walpers (Fabales: Fabaceae). Population dynamics at the field level; and survival, fecundity and offspring production by A. macrophthalmus under laboratory conditions were measured when fed on its natural plant-host Leucaena leucocephala (Lamark) deWit (Fabales: Mimosaceae). The data resulting from the laboratory study were used to calculate the demographic parameters of A. macrophthalmus by establishing its fertility and life tables. Contrary to cultivated leguminous food plants, L. leucocephala is a perennial sub-spontaneous leguminous plant whose pods are available year round. Although A. macrophthalmus was present in nature throughout the year, its infestation rate of the pods fluctuated according to the phenology of the plant. The maximum infestation of L. leucocephala pods was observed between August and December. Four larval stages and one pupal stage of A. macrophthalmus were identified in the laboratory. The total mean development time varied on average 33.75 +/- 2.87 days on the mature pods and 33.39 +/- 2.02 days on seeds. The adult female lived from one to two weeks. During its life time, the female laid an average of 62.3 +/- 19 and 43.1 +/- 13 eggs on the mature pods and seeds respectively and produced an average of 36.7 +/- 11.3 offspring on the mature pods and 21.8 +/- 8.4 offspring on seeds. On seeds, the net reproduction rate was 5.88 females per female and the intrinsic rate of population increase 0.051 per day. The generation time was 34.59 days and the doubling time 13.59 days. The demographic parameters of A. macrophthalmus in this study are close to those of Callobruchus maculatus F. (Bruchidae), the natural host of D. basalts in a previous study. A. macrophthalmus could therefore be used as substitute host for the mass rearing of D. basalts and subsequently its release in farmers' storage containers. The data presented in this study provide some baseline information regarding the reproductive capacities of A. macrophthalmus that may be useful for its promotion as a substitute host for mass rearing of D. basalts.  
  Address Laboratoire d'Entomologie Appliquee, Faculte des Sciences, Universite de Lome BP 1515, Lome Togo. quashie78@yahoo.fr  
  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 1536-2442 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:20879923 Approved no  
  Call Number North Georgia @ ikokkala @ Serial 60  
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