Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti
The capability of Epidinocarsis lopezi (De Santis) (Hymenoptera: Encyrtidae) to control the cassava mealybug (CM) Phenacoccus manihoti Mat.-Ferr. (Homoptera: Pseudococcidae) was investigated in Nigeria using physical and chemical exclusion experiments. In two sleeve cage experiments CM populations,...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
1986
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/81491 |
| _version_ | 1855522943850774528 |
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| author | Neuenschwander, Peter Schulthess, F. Madojemu, E. |
| author_browse | Madojemu, E. Neuenschwander, Peter Schulthess, F. |
| author_facet | Neuenschwander, Peter Schulthess, F. Madojemu, E. |
| author_sort | Neuenschwander, Peter |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The capability of Epidinocarsis lopezi (De Santis) (Hymenoptera: Encyrtidae) to control the cassava mealybug (CM) Phenacoccus manihoti Mat.-Ferr. (Homoptera: Pseudococcidae) was investigated in Nigeria using physical and chemical exclusion experiments. In two sleeve cage experiments CM populations, about 2 months after artificial infestation, were 7.0 and 2.3 × lower on artificially infested cassava tips covered with open cages than on tips in closed cages which excluded most parasitoids. On similarly infested but uncovered tips, CM populations were 24.3 and 37.5 × lower, and parasitisation rates were higher. In an artificially infested field which was treated weekly with carbaryl, parasitisation rates were below 10% and CM populations exceeded 200 per tip. In the chemically untreated plot, parasitisation rates were up to 25% and CM densities were mostly below 10 per tip. This study demonstrates the efficiency of E. lopezi in controlling its host under the experimental conditions. |
| format | Journal Article |
| id | CGSpace81491 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1986 |
| publishDateRange | 1986 |
| publishDateSort | 1986 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace814912024-05-01T08:16:50Z Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti Neuenschwander, Peter Schulthess, F. Madojemu, E. cassava population density parasitoids epidinocarsis lopezi phenacoccus maniholi pseudococcidae cassava mealybug biological control efficiency The capability of Epidinocarsis lopezi (De Santis) (Hymenoptera: Encyrtidae) to control the cassava mealybug (CM) Phenacoccus manihoti Mat.-Ferr. (Homoptera: Pseudococcidae) was investigated in Nigeria using physical and chemical exclusion experiments. In two sleeve cage experiments CM populations, about 2 months after artificial infestation, were 7.0 and 2.3 × lower on artificially infested cassava tips covered with open cages than on tips in closed cages which excluded most parasitoids. On similarly infested but uncovered tips, CM populations were 24.3 and 37.5 × lower, and parasitisation rates were higher. In an artificially infested field which was treated weekly with carbaryl, parasitisation rates were below 10% and CM populations exceeded 200 per tip. In the chemically untreated plot, parasitisation rates were up to 25% and CM densities were mostly below 10 per tip. This study demonstrates the efficiency of E. lopezi in controlling its host under the experimental conditions. 1986-10 2017-06-08T11:52:44Z 2017-06-08T11:52:44Z Journal Article https://hdl.handle.net/10568/81491 en Limited Access Wiley Neuenschwander, P., Schulthess, F. & Madojemu, E. (1986). Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti. Entomologia Experimentalis et Applicata, 42(2), 133-138. |
| spellingShingle | cassava population density parasitoids epidinocarsis lopezi phenacoccus maniholi pseudococcidae cassava mealybug biological control efficiency Neuenschwander, Peter Schulthess, F. Madojemu, E. Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti |
| title | Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti |
| title_full | Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti |
| title_fullStr | Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti |
| title_full_unstemmed | Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti |
| title_short | Experimental evaluation of the efficiency of Epidinocarsis lopezi, a parasitoid introduced into Africa against the cassava mealybug Phenacoccus manihoti |
| title_sort | experimental evaluation of the efficiency of epidinocarsis lopezi a parasitoid introduced into africa against the cassava mealybug phenacoccus manihoti |
| topic | cassava population density parasitoids epidinocarsis lopezi phenacoccus maniholi pseudococcidae cassava mealybug biological control efficiency |
| url | https://hdl.handle.net/10568/81491 |
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