Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A.
A Phenaccocus herreni Cox & Williams population studied in Colombia, S.A., across a complete cassava crop cycle did not exceed 81 mealybugs/plant. P. herreni densities in Colombia were highest in the dry season, as were levels of parasitism by the encyrtids Acerophagus coccois Smith and Epidinocarsi...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
1990
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/43419 |
| _version_ | 1855542431355764736 |
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| author | Driesche, R.G. van Bellotti, Anthony C. Castillo, J. Herrera, C.J. |
| author_browse | Bellotti, Anthony C. Castillo, J. Driesche, R.G. van Herrera, C.J. |
| author_facet | Driesche, R.G. van Bellotti, Anthony C. Castillo, J. Herrera, C.J. |
| author_sort | Driesche, R.G. van |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A Phenaccocus herreni Cox & Williams population studied in Colombia, S.A., across a complete cassava crop cycle did not exceed 81 mealybugs/plant. P. herreni densities in Colombia were highest in the dry season, as were levels of parasitism by the encyrtids Acerophagus coccois Smith and Epidinocarsis diversicornis (Howard). Mealybug densities declined sharply during the dry season prior to the onset of rains. Stage survival among female mealybug nymphs was lowest in the third instar. Nine percent of all female first instar mealybugs survived to enter the adult stage. The combined action of the parasitoid species present caused 54.9% mortality to the host population as estimated by a new analytical method (Bellows et al. 1989). |
| format | Journal Article |
| id | CGSpace43419 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1990 |
| publishDateRange | 1990 |
| publishDateSort | 1990 |
| record_format | dspace |
| spelling | CGSpace434192023-02-15T05:22:38Z Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A. Driesche, R.G. van Bellotti, Anthony C. Castillo, J. Herrera, C.J. manihot esculenta phenacoccus herreni predators and parasites population dynamics biological control injurious insects noxious animals pests starch crops depredadores y parasitos dinamica de poblacion A Phenaccocus herreni Cox & Williams population studied in Colombia, S.A., across a complete cassava crop cycle did not exceed 81 mealybugs/plant. P. herreni densities in Colombia were highest in the dry season, as were levels of parasitism by the encyrtids Acerophagus coccois Smith and Epidinocarsis diversicornis (Howard). Mealybug densities declined sharply during the dry season prior to the onset of rains. Stage survival among female mealybug nymphs was lowest in the third instar. Nine percent of all female first instar mealybugs survived to enter the adult stage. The combined action of the parasitoid species present caused 54.9% mortality to the host population as estimated by a new analytical method (Bellows et al. 1989). 1990 2014-09-24T08:42:06Z 2014-09-24T08:42:06Z Journal Article https://hdl.handle.net/10568/43419 en Open Access |
| spellingShingle | manihot esculenta phenacoccus herreni predators and parasites population dynamics biological control injurious insects noxious animals pests starch crops depredadores y parasitos dinamica de poblacion Driesche, R.G. van Bellotti, Anthony C. Castillo, J. Herrera, C.J. Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A. |
| title | Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A. |
| title_full | Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A. |
| title_fullStr | Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A. |
| title_full_unstemmed | Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A. |
| title_short | Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A. |
| title_sort | estimating total losses from parasitoids for a field population of a continuously breeding insect cassava mealybug phenacoccus herreni homoptera pseudococcidae in colombia s a |
| topic | manihot esculenta phenacoccus herreni predators and parasites population dynamics biological control injurious insects noxious animals pests starch crops depredadores y parasitos dinamica de poblacion |
| url | https://hdl.handle.net/10568/43419 |
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