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Insect vectors of cowpea mosaic virus in Nigeria
Author(s) -
WHITNEY W. K.,
GILMER R. M.
Publication year - 1974
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1974.tb01383.x
Subject(s) - biology , aphis craccivora , cowpea mosaic virus , aphid , acyrthosiphon pisum , grasshopper , mosaic virus , insect , aphis , horticulture , plant virus , agronomy , botany , pest analysis , virus , aphididae , virology , homoptera , ecology
SUMMARY A yellow strain of cowpea mosaic virus (CPMV) was transmitted in cowpea by two thrips, Sericothrips occipitalis and Taeniothrips sjostedti ; two chrysomelid beetles, Ootheca mutabilis and Paraluperodes quaternus ; a curculionid beetle, Nematocerus acerbus ; and two acridid grasshoppers, Catantops spissus spissus and Zonocerus variegatus. Summarizing trials with single insects, the efficiency of transmission of CPMV averaged 18—21% for N. acerbus and the two grasshoppers, 55% for P. quaternus , and 71% for O. mutabilis. Twenty‐two and 40% of the plants exposed to large populations of S. occipitalis and T. sjostedti , respectively, were infected. In three trials with an aphid, Aphis craccivora , 4 of 49 plants were infected with CPMV, but these infections were considered spurious because no infections occurred in any of 63 plants exposed to this insect in four other trials. A coreid bug, Riptortus dentipes , did not transmit CPMV. Mosaic symptoms in infected plants appeared 5—39 days after they were exposed to vectors. Infective virus was recovered from fresh faecal pellets of each grasshopper vector.