HC-Pro from WMV and ZYMV are interchangeable and both mediate efficiently the transmission of purified virions of both species. 2006. Other aphid vectors of FBNYV are the black bean aphid (Aphis fabae) and the pea aphid (Acyrthosiphon pisum). Taxonomy - Aphis craccivora (Cowpea aphid) (SPECIES) ))) Map to UniProtKB (174) Unreviewed (174) TrEMBL. Aphid (Aphis craccivora Koch) is one of the serious pests of cowpea.Bioefficacy of four insecticides with different concentrations namely Jholmol (125 ml/L), Neemix (2 ml/L), Cannabis extract (100 g/L), Chlorpyrifos 50% EC and Cypermethrin 5% EC (2 ml/L) along with control were evaluated against aphid at Research Station of Agriculture and Forestry University, Rampur, Chitwan, Nepal in 2018. The virus is transmitted in a nonpersistent manner by Myzus persicae and at least 13 other aphid species (Kennedy et al., 1962). The proximity of virus reservoirs, such as susceptible crops (alfalfa) or noncultivated susceptible plants, are the major factors driving virus epidemics. Damage is similar to that caused by the pea aphid, and thresholds are likely to be comparable. Springer Science and Business Media B.V. 1216 pp. Cowpea aphid, Aphis craccivora Koch is a polyphagous pest of cowpea that attacks the crop, feeding on all plant parts and leading to significant yield losses [10–12]. This species is found in medics, vetch and a wide range of summer and winter pulse crops throughout Australia. In the late 1980s when Bertaccini et al. Figure 4.16. Whereas only one aphid species, the banana aphid (Pentalonia nigronervosa) and Micromyzus kalimpongensis has been reported as respective vector of BBTV and CBDV, several aphid species transmit FBNYV, MDV, and SCSV. In autumn, the aphids appear to be able to move large distances to colonise establishing crops and pastures. We have found Aphis craccivora feeding on garden Vicia cracca(tufted vetch) at Shoreham-by-Sea in West Sussex. In contrast to observations for luteoviruses, however, immunofluorescence localization of BBTV in the banana aphid Pentalonia nigronervosa indicates that BBTV antigens occur in cells of the anterior midgut and the principal salivary glands. The cowpea aphid (Aphis craccivora) appears to be the major natural vector of these viruses as it is the most abundant aphid species on legume crops in the afflicted areas and was among the most efficient vectors under experimental conditions. The enzymatic system comprises antioxidant enzymes, such as superoxide dismutase (SOD), ascorbate peroxidase, glutathione reductase, peroxiredoxin, catalase, polyphenol oxidase (PPO), among others. Cowpea aphid (Aphis craccivora Koch) is a major pest of cowpea (Vigna unguiculata L. Aphid, Aphis craccivora Koch (Homoptera: Aphididae), is one of the most widespread and destructive insect pests of cowpea and host-plant resistance is an effective approach to minimize the pest damage at seedling stage. Taxonomic placing: Insecta, Hemimetabola, Hemiptera, Sternorrhyncha, Aphidoidea, Aphididae.. Common name: Cowpea aphid.. Geographical distribution: Cosmopolitan; CIE Map # 99, 1983 (revised).. Worldwide in distribution, but particularly common in warm temperate and tropical regions. Roger Hull, in Plant Virology (Fifth Edition), 2014. This leaflet briefly describes the biology of Aphis craccivora (cowpea aphid) and its control. This is a logical question. It was first reported by Johnson (1953) that the hooked nonglandular trichomes of the French bean (Phaseolus vulgaris) had a detrimental effect on populations of the cowpea aphid (Aphis craccivora; Johnson, 1953). H.J. The virus has been found infecting tomatoes in Italy but not lettuce (Parrella and Crescenzi, 2005). Aphis craccivora Koch. Several ZYMV isolates that have lost aphid transmissibility have been characterized, and a unique feature for this virus is that single amino acid mutants have been identified in the three domains important for transmission. Aphis craccivora colony was maintained on seedlings of fava bean in a growth chamber at 23°C with a photoperiod of 12: 12 (L: D) and 50% relative humidity. Singh et al. Obopile M. & Ositile B., 2010. Originally of probable Palearctic origin, it is now an invasive species of cosmopolitan distribution. Terminal (leaf) node. At the leaf surface, trichomes play an important role in basal defense and may confer both antixenotic and antibiotic properties to the plant. Introduction A. craccivora is a cosmopolitan species with a worldwide distribution; abundant in subtropical and tropical regions, and in the Mediterranean. WMV is transmitted by at least 35 aphid species in 19 genera. Crop spacing may affect the landing response of flying aphids.