Distribuição da acarofauna em cafeeiro (Coffea arabica var. Catuaí amarelo), em Atibaia, SP
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2001
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Resumo
RESUMO: Este trabalho teve como objetivos estudar a distribuição da acarofauna em cafeeiro (Coffea arabica var. Catuaí Amarelo) e avaliar quantitativa e qualitativamente os ácaros predadores, fitófagos e micófagos presentes na cultura. O estudo foi realizado em uma lavoura de café de aproximadamente 15 anos de idade, localizada no município de Atibaia, SP. Foram escolhidas 10 plantas e de cada uma foram coletadas 10 folhas e 10 frutos nas partes externa e interna, dos terços inferior, médio e superior. Foram retirados ramos apenas do terço médio e divididos em duas partes (externa e interna), cada uma com
aproximadamente 30 centímetros. Foram feitas quatro amostragens (uma a cada 15 dias) entre 13/06 a 25/07/2000. De um total de 2.830 ácaros coletados, o maior número de espécimes foi registrado em folhas, no terço inferior externo (631 espécimes), e o menor em frutos (46 espécimes). Dentre os ácaros fitófagos, Brevipalpus phoenicis e Oligonychus sp. foram as espécies que mais se destacaram, representando cerca de 36 e 35% do total, respectivamente. No caso dos predadores, os ácaros da família Phytoseiidae foram os mais abundantes, com 255 espécimes encontrados. Iphiseiodes zuluagai foi a espécie de maior incidência (194 espécimes) em todas as partes amostradas (folhas, frutos e ramos), sendo encontrado em maior número nos ramos (120 espécimes). Uma grande diversidade de ácaros predadores foi observada nos ramos, compreendendo 19 espécies, distribuídas em nove famílias.
The objective of this work was to study the distribution of mites in coffee plants (Coffea arabica var. Catuaí Amarelo) and evaluate quantitative and qualitatively the predaceous, phytophagous and fungivorous mites found in the crop. The study was carried out in a coffee plantation with approximately 15 years old, located in Atibaia county, in the State of São Paulo. Ten plants were chosen and from each plant, 10 leaves and 10 fruits were collected from the external and internal parts; from the inferior, medium and superior parts of the plants. Branches were taken only from medium part of the plants and divided into two parts (external and internal), each part with approximately 30 cm. Four collections (at each 15 days) were conducted from 13/06 to 25/07/2000. From a total of 2,830 specimens, the highest number of mites was found on leaves, collected from inferior and external part of the plant (631 specimens) and the lowest number on fruits (46 specimens). Among the phytophagous mites, Brevipalpus phoenicis and Oligonychus sp. were the species with the highest incidences, representing around 36 and 35% of the total, respectively. In the case of predators, the mites of the family Phytoseiidae constituted the most numerous group with 255 specimens. Iphiseiodes zuluagai was the most abundant species (194 specimes) in all sampled parts of coffee plants (leaves, fruits and branches), being found in higher number on branches (120 specimens). A great diversity of predaceous mites was found on branches, comprising 19 species distributed in nine families.
The objective of this work was to study the distribution of mites in coffee plants (Coffea arabica var. Catuaí Amarelo) and evaluate quantitative and qualitatively the predaceous, phytophagous and fungivorous mites found in the crop. The study was carried out in a coffee plantation with approximately 15 years old, located in Atibaia county, in the State of São Paulo. Ten plants were chosen and from each plant, 10 leaves and 10 fruits were collected from the external and internal parts; from the inferior, medium and superior parts of the plants. Branches were taken only from medium part of the plants and divided into two parts (external and internal), each part with approximately 30 cm. Four collections (at each 15 days) were conducted from 13/06 to 25/07/2000. From a total of 2,830 specimens, the highest number of mites was found on leaves, collected from inferior and external part of the plant (631 specimens) and the lowest number on fruits (46 specimens). Among the phytophagous mites, Brevipalpus phoenicis and Oligonychus sp. were the species with the highest incidences, representing around 36 and 35% of the total, respectively. In the case of predators, the mites of the family Phytoseiidae constituted the most numerous group with 255 specimens. Iphiseiodes zuluagai was the most abundant species (194 specimes) in all sampled parts of coffee plants (leaves, fruits and branches), being found in higher number on branches (120 specimens). A great diversity of predaceous mites was found on branches, comprising 19 species distributed in nine families.
Descrição
Trabalho apresentado no Simpósio de Pesquisa dos Cafés do Brasil (2. : 2001 : Vitória, ES). Resumos. Brasília, D.F. : Embrapa Café, 2001. 181p. : il.
Palavras-chave
Café Catuaí amarelo Acarofauna Brevipalpus phoenicis Oligonychus sp. Iphiseiodes zuluagai, Acari Predators Phytophagous Brevipalpus phoenicis Iphiseiodes zuluagai.
Citação
Mineiro, J. L. de C.; Sato, M. E.; Raga, A.; Souza Filho, M. F.; Siloto, R. C.; Moraes, G. J. de; Spongoski, S. Distribuição da acarofauna em cafeeiro (Coffea arabica var. Catuaí amarelo), em Atibaia, SP. In: Simpósio Brasileiro de Pesquisa dos Cafés do Brasil (2. : 2001 : Vitória, ES). Anais. Brasília, D.F. : Embrapa Café, 2001. (CD-ROM), p. 1921-1926