Aphid Populations in Relation to Tristeza in Florida Citrus
Year: 1969
Type: article
Abstract: Analysis of 16 years of monthly records of aphid populations in 130 Florida citrus groves disclosed Aphis spiraecola, A. gossypii and Toxoptera aurantii as the only species commonly attacking citrus. All three species are known to transmit tristeza virus. Populations of each species in the 6 years of highest statewide population were compared for 3 geographical areas within the citrus belt. In West area where spread of tristeza is great, Aphis gossypii was most abundant and dominant. In Central area where tristeza spread is also great A. gossypii was seldom abundant but total aphid population was higher and A. spiraecola was dominant. In East area where tristeza is found occasionally but appears not to be spreading, all 3 species were present but aphid infestations were usually less severe. No direct linear relationship between tristeza spread and numbers of aphids was evident. It is recognized that factors such as abundance of trees acting as virus reservoirs, different strains of virus, and the possibility of aphid strains of greater transmission efficiency may also be involved.
Source: Florida Entomologist
DOI: 10.2307/3493704
Authors: W. A. Simanton, L. C. Knorr
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $1,130
OpenAlex ID: W1494149975