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'APHIS CRACCIVORA' 
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A. Franz ; K. Makkouk ; H. Vetten | 1998Faba bean necrotic yellows virus (FBNYV) belongs to a new group of plant viruses that have unusually small isometric virions and a multipartite ss DNA genome. It is the causal agent of some virus diseases affecting several food and fodder legume[...]article/chapitre/communication
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S. Githiri ; K. Ampongnyarko ; E. Osir ; P. Kimani | 1996Inheritance of aphid resistance and allelic relationships among sources of resistance was studied in the parents, F-1, F-2, F-3, and backcross populations of cowpea crosses. Each 4-day old seedling was infested with five fourth-instar aphids. Se[...]article/chapitre/communication
I. Annan ; G. Schaefers ; W. Tingey | 1996Impact of initial density of cowpea aphid Aphis craccivora Koch (Aphididae) at infestation on the growth and yield of aphid-susceptible cowpea cultivar ICV-1 and aphid-resistant cultivar ICV-12, was investigated. Plants at the seedling, flowerin[...]article/chapitre/communication
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S. Firempong | 1990article/chapitre/communication
V. Traicevski ; S. Ward | 20021. Reciprocal transfer experiments were undertaken using four different hosts to examine the effects of a change in host at adult moult on the probing behaviour of the cowpea aphid Aphis craccivora Koch. 2. The highest intrinsic rate of increase[...]article/chapitre/communication
I. Annan ; W. Tingey ; G. Schaefers ; W. Tjallingii ; E. Backus ; K. Saxena | 2000Direct current electrical penetration graphs (DC-EPGs) were used to analyze the styler penetration activities of cowpea aphid, Aphis craccivora Koch, on plants of aphid-resistant (ICV-12) and aphid-susceptible (ICV-1) cultivars of cowpea, Vigna [...]article/chapitre/communication
J. Pettersson ; S. Karunaratne ; E. Ahmed ; V. Kumar | 1998Olfactometer experiments were conducted with apterae and alatae of the cowpea aphid, Aphis craccivora, Koch (Hom.: Aphidoidea). The occurrence of density dependent related pheromones and odour response to their host plant Vigna unguiculata was s[...]article/chapitre/communication
V. Traicevski ; S. Ward | 20021. A general index of accumulated investment that alate aphids make into reproduction with respect to environmental changes (specifically changes in host at adult moult) was investigated to determine whether and how reproduction in Aphis cracciv[...]article/chapitre/communication
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I. Salem | 1998article/chapitre/communication
S. Mendes ; M. Cervino ; V. Bueno ; A. Auad | 2000This work was carried out with the objective of showing the diversity of aphids and their predators and parasitoids, as well as the influence of the climatic factors on these insects in alfalfa crop. The survey was done weekly from April/95 to M[...]article/chapitre/communication
G. Zehnder ; A. Nichols ; O. Edwards ; T. Ridsdillsmith | 2001The feeding behavior of cowpea aphid, Aphis craccivora Koch (Homoptera: Aphididae) was examined on seedlings of narrow leafed lupin, Lupinus angustifolius L., and yellow lupin, L. luteus L., using electronic monitoring of insect feeding behavior[...]article/chapitre/communication
I. Annan ; G. Schaefers ; W. Tingey | 1995The influence of duration of infestation by cowpea aphid Aphis craccivora Koch on aphid-resistant (ICV-12) and aphid-susceptible (ICV-I) cultivars of cowpea Vign?a unguiculata (L.) Walp, were compared to uninfested controls. Five apterous adult [...]
