Abstract
A study was conducted in Burkina Faso from 1991 to 1994 on the parasitoids associated with the following lepidopterous pests of cotton:Helicoverpa armigera (Hubner),Earias spp.,Diparopsis watersi (Rothschild),Spodoptera littoralis (Boisduval),Syllepte derogata (F.) andAnomis flava (F.). Thirty-nine primary parasitoid species and ten secondary parasitoid species were collected. The mean annual parasitism rates were lower than 20%, except forS. derogata pupae (42.9%). Maximum weekly parasitism rates could be high, with 61.5% recorded forS. derogata pupae and 32.9% forH. armigera larvae. The highest parasitism rates were found forMeteorus laphygmarum Brues (Braconidae) onH. armigera, Xanthopimpla aliena Krieger (Ichneumonidae),Brachymeria olethria (Waterston) andB. citrea (Steffan) (Chalcididae) onS. derogata, Aleiodes dedivus (Szepligeti),Dolichogenidea sp. (Braconidae) andBrachymeria feae Masi onEarias spp., an unidentified Tachinidae onA. flava andMetopius discolor Tosquinet (Ichneumonidae) onS. littoralis. Secondary parasitoids are mainly associated withApanteles spp. (Braconidae) which parasitizeS. derogata larvae. Some species of these secondary parasitoids such asNesolynx phaeosoma (Waterston),Pedobius amaurocoelus (Waterston) (Eulophidae) andAphanogmus fijiensis (Ferriere) (Ceraphronidae) may also attack certain Braconidae or Chalcididae that are primary parasitoids of other lepidopterous pests.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
