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Journal Article 1991

Autor: Dijken, M.J. van Neuenschwander, P. Alphen, J.J.M. van Hammond, W.N.O.

1. In cassava fields in Africa, population sex ratios of Epidinocarsis fopezi vaned from 0.44 (males to total parasitoids) at low host densities to highly male-biased ratios of 0.70 at high host densities. 2. This variability is caused by the difference in allocation of sons and daughters to host...

Enlace original: https://cgspace.cgiar.org/handle/10568/101697

Investigación en Agricultura
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Dijken, M.J. van ,  Neuenschwander, P. ,  Alphen, J.J.M. van ,  Hammond, W.N.O. ,  [Sex ratios in field populations of Epidinocarsis lopezi, an exotic parasitoid of the cassava mealybug, in Africa] ,  Sex ratios in field populations of Epidinocarsis lopezi, an exotic parasitoid of the cassava mealybug, in Africa
Journal Article 1990

Autor: Meiracker, R.A.F. van der Hammond, W.N.O. Alphen, J.J.M. van

We studied searching behaviour of Diomus sp., a coccinellid predator introduced into Africa as a natural enemy of the cassava mealybug, when searching on cassava leaves, and compared its behaviour with the searching behaviour of Exochomus sp., an African predator of mealybugs (MB's). Female adult...

Enlace original: https://cgspace.cgiar.org/handle/10568/101833

Investigación en Agricultura
Enlace permanente
Meiracker, R.A.F. van der ,  Hammond, W.N.O. ,  Alphen, J.J.M. van ,  [The role of kairomones in prey finding by Diomus sp. and Exochomus sp. two coccinellid predators of the cassava mealybug, Phenacoccus manihoti.] ,  The role of kairomones in prey finding by Diomus sp. and Exochomus sp. two coccinellid predators of the cassava mealybug, Phenacoccus manihoti.
Journal Article 1990

Autor: Hammond, W.N.O. Neuenschwander, P.

Following the successful introduction of Epidinocarsis lopezi (De Santis) for biological control of the cassava mealybug (CM) Phenacoccus .manihoti Mat.-Ferr. in southwestern Nigeria in 1981 and 1982, 11 groups of cassava fields were sampled every 2 weeks up to 1988 for impact assessment. After 1...

Enlace original: https://cgspace.cgiar.org/handle/10568/101848

Investigación en Agricultura
Enlace permanente
Hammond, W.N.O. ,  Neuenschwander, P. ,  [Sustained biological control of the cassava mealybug Phenacoccus manihoti (Hom: Pseudococcidae) by Epidinocarsis lopezi (Hym.: Encyrtidae) in Nigeria] ,  Sustained biological control of the cassava mealybug Phenacoccus manihoti (Hom: Pseudococcidae) by Epidinocarsis lopezi (Hym.: Encyrtidae) in Nigeria

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