Ocorrência e flutuação populacional de Diaphorina citri (Hemiptera: liviidae) e verificação da presença de Candidatus liberibacter spp. em áreas citrícolas do estado de Goiás
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2015-03-30
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Universidade Federal de Goiás
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The Asian citrus psilliyd, Diaphorina citri is the vector of bacteria Candidatus Liberibacter spp.
Is associated to the presently most important disease of citrus, Huanglongbing (HLB), and has
negatively affected citrus production in countries around the world, including Brazil. D. citri
took the key pest status in the nation citrus industry because it is the principal vector of
Huanglongbing (HLB), disease recorded in Brazil in 2004, and for its high ability to transmit
other bacteria associated to it. There are reports of the incidence of Asian citrus psillid D. citri
in six states: São Paulo, Minas Gerais, Paraná, Rio de Janeiro, Bahia, Rio Grande do Sul and
Roraima. However the presence of the disease Huanglongbening (HLB), transmitted by D.
citri, was detected in three states, only: São Paulo, Minas Gerais and Paraná. The present
work was to study the occurrence of D. citri in citrus orchards of Goiás State, analyzing the
population dynamics and verify the presence of Candidatus Liberibacter spp. through its
detection in the vector, to improve strategies related to its management. To this end, surveys
were conducted through sticky traps and visual inspections in commercial citrus orchards,
located in Goiás mesoregions: south, central, east and northeast, from February 2012 to April
2014. The adults captured were analyzed by PCR for detcção Ca. Liberibacter spp. and was
also carried out the study of population fluctuation of D. citri. Join the occurrence of
Diaphorina citri in Goiás in the municipalities of Agua Fria de Goiás, meso northeast,
Pirenópolis, mesoregion east, and Santa Izabel, central region, in low density. The hosts
where there was detection of the psyllid were ponkan mandarin (Citrus reticulata Blanco),
orange-pear (Citrus sinensis L. Osbeck), orange-natal (Citrus sinensis L. Osbeck) and Tahiti
lime (Citrus x limon). There was no detection of Candidatus Liberibacter, therefore, keep the
state as harmless area Huanglongbing (HLB). The population peak of adults and / or nymphs
of D. citri occur in mid-spring and early summer, with population peak in October 2012 and
2013 and February 2013, being directly influenced by the issue of the growing flow of citrus
plants and by climatic precipitation and temperature parameters.
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RABELO, L. R. S. Ocorrência e flutuação populacional de Diaphorina citri (Hemiptera: liviidae) e verificação da presença de Candidatus liberibacter spp. em áreas citrícolas do estado de Goiás. 2015. 90 f. Tese (Doutorado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2015.