ABSTRACT
This study was conducted to identify indigenous parasitoids for the control of the larger grain
borer, Prostephanus truncatus (Horn) (Coleoptera : Bostrichidae). A search was conducted at
various market stores in the Greater Accra and Volta Regions to collect and identify parasitoids
associated with stored product pests. Anisopteromalus calandrae (Howard)
(Hymenoptera : Pteromalidae) and Dinarmus basalis (Rondani) (Hymenoptera : Pteromalidae)
associated respectively with Sitophilus zeamais Motschulsky (Coleoptera:CurcuIionidae) and
Callosobruchus maculatus (Fabricius) (Coleoptera : Bruchidae), were found to be the most
abundant and most frequent. These two parasitoids were thus selected for investigation into their
possible controlling effect on P truncatus. A. calandrae caused a significant suppression of
47.5% in S. zeamais population during a 16 weeks study period. A. calandrae also caused a
significant suppression in P truncatus population to the tune of 43.8% within the same period of
study. In this study, A. calandrae was found to prefer larger and older (3rd instar) P. truncatus
larvae for oviposition and development. All larger grain borer larval instars were however
acceptable to A. calandrae for oviposition, with the 3rd instar being the most suitable for
its development. D. basalis, on the other hand caused a profound 83.8% suppression in
C. maculatus population at a mean parasitoid level of 26.7 in the treatment. D. basalis however
did not attack P truncatus at all. A. calandrae therefore has the potential to contribute
substantially to an integrated control of P truncatus in Ghana.
SEINI, S (2021). A Search For Indigenous Parasitoids For The Control Of The Larger Grain Borer, Prostephanus Truncatus (Horn) (Coleoptera: Bostrichidae). Afribary. Retrieved from https://track.afribary.com/works/a-search-for-indigenous-parasitoids-for-the-control-of-the-larger-grain-borer-prostephanus-truncatus-horn-coleoptera-bostrichidae
SEINI, SEIDU "A Search For Indigenous Parasitoids For The Control Of The Larger Grain Borer, Prostephanus Truncatus (Horn) (Coleoptera: Bostrichidae)" Afribary. Afribary, 14 Apr. 2021, https://track.afribary.com/works/a-search-for-indigenous-parasitoids-for-the-control-of-the-larger-grain-borer-prostephanus-truncatus-horn-coleoptera-bostrichidae. Accessed 24 Nov. 2024.
SEINI, SEIDU . "A Search For Indigenous Parasitoids For The Control Of The Larger Grain Borer, Prostephanus Truncatus (Horn) (Coleoptera: Bostrichidae)". Afribary, Afribary, 14 Apr. 2021. Web. 24 Nov. 2024. < https://track.afribary.com/works/a-search-for-indigenous-parasitoids-for-the-control-of-the-larger-grain-borer-prostephanus-truncatus-horn-coleoptera-bostrichidae >.
SEINI, SEIDU . "A Search For Indigenous Parasitoids For The Control Of The Larger Grain Borer, Prostephanus Truncatus (Horn) (Coleoptera: Bostrichidae)" Afribary (2021). Accessed November 24, 2024. https://track.afribary.com/works/a-search-for-indigenous-parasitoids-for-the-control-of-the-larger-grain-borer-prostephanus-truncatus-horn-coleoptera-bostrichidae