Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density
The parasitoid wasp Cephalonomia tarsalis (Ashmead) (Hymenoptera: Bethylidae) is commonly present in stored product facilities. While beneficial, it does not provide a high 24 degree of biological pest control against its host, the saw-toothed beetle Oryzaephilus surinamensis (L.) (Coleoptera: Silva...
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Cambridge University Press
2016
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| Online Access: | https://eprints.nottingham.ac.uk/34581/ |
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| author | Eliopoulos, Panagliotis A. Kapranas, Apostolos Givropoulou, Elftheria Hardy, Ian C.W. |
| author_facet | Eliopoulos, Panagliotis A. Kapranas, Apostolos Givropoulou, Elftheria Hardy, Ian C.W. |
| author_sort | Eliopoulos, Panagliotis A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The parasitoid wasp Cephalonomia tarsalis (Ashmead) (Hymenoptera: Bethylidae) is commonly present in stored product facilities. While beneficial, it does not provide a high 24 degree of biological pest control against its host, the saw-toothed beetle Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae). A candidate explanation for poor host population suppression is that adult females interfere with each other’s foraging and reproductive behavior. We used simple laboratory microcosms to evaluate such mutual interference in terms of its overall effects on offspring production. We varied the density of the hosts and also the spatial structure of the environment, via the extent of population sub-division and the provision of different substrates. Production of C. tarsalis offspring was positively influenced by host density and by the isolation of females. With incomplete sub-division within microcosms offspring production was, in contrast, low and even zero. The provision of corrugated paper as a substrate enhanced offspring production and partially mitigated the effects of mutual interference. We recommend simple improvements to mass rearing practice and identify promising areas for further behavioral and chemical studies towards a better understanding of the mechanisms of mutual interference. |
| first_indexed | 2025-11-14T19:23:20Z |
| format | Article |
| id | nottingham-34581 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:23:20Z |
| publishDate | 2016 |
| publisher | Cambridge University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-345812020-05-04T18:18:08Z https://eprints.nottingham.ac.uk/34581/ Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density Eliopoulos, Panagliotis A. Kapranas, Apostolos Givropoulou, Elftheria Hardy, Ian C.W. The parasitoid wasp Cephalonomia tarsalis (Ashmead) (Hymenoptera: Bethylidae) is commonly present in stored product facilities. While beneficial, it does not provide a high 24 degree of biological pest control against its host, the saw-toothed beetle Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae). A candidate explanation for poor host population suppression is that adult females interfere with each other’s foraging and reproductive behavior. We used simple laboratory microcosms to evaluate such mutual interference in terms of its overall effects on offspring production. We varied the density of the hosts and also the spatial structure of the environment, via the extent of population sub-division and the provision of different substrates. Production of C. tarsalis offspring was positively influenced by host density and by the isolation of females. With incomplete sub-division within microcosms offspring production was, in contrast, low and even zero. The provision of corrugated paper as a substrate enhanced offspring production and partially mitigated the effects of mutual interference. We recommend simple improvements to mass rearing practice and identify promising areas for further behavioral and chemical studies towards a better understanding of the mechanisms of mutual interference. Cambridge University Press 2016-10-03 Article PeerReviewed Eliopoulos, Panagliotis A., Kapranas, Apostolos, Givropoulou, Elftheria and Hardy, Ian C.W. (2016) Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density. Bulletin of Entomological Research . pp. 1-9. ISSN 1475-2670 Mutual interference Cephalonomia tarsalis Oryzaephilus surinamensis Stored products behavioural and chemical interactions https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/div-classtitlereproductive-efficiency-of-the-bethylid-wasp-span-classitaliccephalonomia-tarsalisspan-the-influences-of-spatial-structure-and-host-densitydiv/F9308343DAD4329 doi:10.1017/S0007485316000651 doi:10.1017/S0007485316000651 |
| spellingShingle | Mutual interference Cephalonomia tarsalis Oryzaephilus surinamensis Stored products behavioural and chemical interactions Eliopoulos, Panagliotis A. Kapranas, Apostolos Givropoulou, Elftheria Hardy, Ian C.W. Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density |
| title | Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density |
| title_full | Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density |
| title_fullStr | Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density |
| title_full_unstemmed | Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density |
| title_short | Reproductive efficiency of the bethylid wasp Cephalonomia tarsalis: the influences of spatial structure and host density |
| title_sort | reproductive efficiency of the bethylid wasp cephalonomia tarsalis: the influences of spatial structure and host density |
| topic | Mutual interference Cephalonomia tarsalis Oryzaephilus surinamensis Stored products behavioural and chemical interactions |
| url | https://eprints.nottingham.ac.uk/34581/ https://eprints.nottingham.ac.uk/34581/ https://eprints.nottingham.ac.uk/34581/ |