Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2013.743.746Aphis craccivora Koch) in Cowpea (Vigna unguiculata L.)]]>AliyuH. IshiyakuM.F. 1220131615The development of cowpea aphid larvae was monitored on seven cowpea genotypes (IAR-48, TVu-15866, IT84S-2246-4, SAKA BABBA SATA, IT90K-76, KANANNADO and TVX 3236). The aim of the study was to determine the developmental response of the larvae as an indication of antibiotic resistance of the genotypes. Highly significant differences (p<0.01) were observed with respect to fertility, larval development, adult longevity, life span, multiplication rate and intrinsic rate of increase. KANANNADO and TVX 3236 show minimum antibiotic effects while a landrace SAKA BABBA SATA shows relatively high antibiotic effects. This result further reveals the potential of SAKA BABBA SATA as a resistance source to aphid. The reaction of IT84S-2246-4, a hitherto aphid resistant genotype, which supported higher levels of survival of the larvae relative to other known susceptible genotype IAR-48, may be an indication of the presence of a new biotype of Aphis craccivora endemic to Zaria environs, or that of the ability of insects to overcome hindrances to their survival including various forms of resistance.]]>Annan, I.B., G.A. Schaefers and W.M. Tingey,1996Aphis craccivora (Aphididae) on growth and yield of susceptible and resistant cowpea cultivars.]]>128183193Annan, I.B., W.M. Tingey and G.A. Schaefers,1997Cowpea aphid (Homoptera: Aphididae) on resistant and susceptible cowpea cultivars.]]>26250255Asin, L. and X. Pons,20013011271134Duke, A.J.,19901990pp: 2-42pp: 2-42Githiri, S.M., K. Ampong-Nyarko, E.O. Osir and P.M. Kimani,1996Aphis craccivora in cowpea.]]>89371376Hafiz, N.A. and A.M. Damarany,2006Vigna unguiculata (L.) Walp) genotypes to infestation with certain pests in Upper Egypt.]]>9715Hales, D.F., J. Tomiuk, K. Wohrmann and P. Sunnuck,199794155Kashyap, R.K., J.P. Bhanot and A.D. Taneja,1988Myzus persicae (Sulzer) multiplication on potato genotypes.]]>15360Kusi, F., D. Obeng-Ofori, S.K. Asante and F.K. Padi,2010Aphis craccivora Koch) (Homoptera: Aphididae).]]>1295104Laamari, M., L. Kheffa and A.C. d'Acier,2008Aphis craccivora Koch) in broad bean (Vicia faba L.) Algerian landrace collection.]]>724862490Le Roux, V., J. Saguez, C. Vincent and P. Giordanengo,2004Myzus persicae (Homoptera: Aphididae) in the laboratory.]]>9720792082Martyn, K.P.,1991A. craccivora Koch, with specific references to resistance in Vigna unguiculata (L) Walp. (Cowpea).]]>1991Messina, F.J., J.A.A. Renwick and J.L. Barmore,1985Aphis craccivora (Homoptera: Aphididae) in selected varieties of cowpea.]]>20263269Myers, G.O., C.A. Fatokun and N.D. Young,1996Vigna unguiculata L. Walp).]]>91181187Obopile, M. and B. Ositile,2010Aphis craccivora Koch (Homoptera: Aphididae) on five cowpea Vigna unguiculata (L. Walp.) varieties.]]>83914Ofuya, T.I.,1988Aphis craccivora Koch (Homoptera: Aphididae).]]>306869Ofuya, T.I.,1997Aphis craccivora Koch (Homoptera: Aphididae), in cowpea, Vigna unguiculata (L.) Walp.]]>2199207Ombakho, G.A., A.P. Tyagi and R.S. Pathak,198774817819Pathak, R.S.,198828474476Singh, B.B. and S.R. Singh,1992515Singh, B.B., O.L. Chambliss and B. Sharma,19971997pp: 30-50pp: 30-50