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Insects related to Olive culture in Rio Grande do Sul State, Brazil/Insetos associados a cultura da oliveira no Rio Grande do Sul, Brasil
The increased cultivation of olive trees in Rio Grande do Sul State and its potential production aro-use the need to characterize the assemblage of insects in olive groves, especially those with potential as pests. Therefore, the insect fauna was sampled monthly for two years, in the canopy of olive...
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Published in: | Ciência rural 2015-12, Vol.45 (12), p.2125 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Online Access: | Get full text |
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Summary: | The increased cultivation of olive trees in Rio Grande do Sul State and its potential production aro-use the need to characterize the assemblage of insects in olive groves, especially those with potential as pests. Therefore, the insect fauna was sampled monthly for two years, in the canopy of olive trees, using beat cloth, and collection of buds in five municipalities in Southern Rio Grande do Sul State. The faunal indices analyzed were abundance, constancy, dominance and frequency. The olive caterpillar Palpita forficifera Munroe 1959 (Lepidoptera: Pyralidae) and mealybugs Saissetia oleae (Olivier, 1791) and Saissetia coffeae (Walker, 1952) (Hemiptera: Coccidae) are the main phytophagous insects in olive farms in the Rio Grande do Sul State, with potential to reach pest status. Eleven insect species were recorded for the first time in olive groves in Brazil The occurrence of P. forficifera is a new record for the Rio Grande do Sul State. Key words: olive pests, monitoring, new insets records, olive caterpillar. Tendo em vista o aumento do cultivo da oliveira no Rio Grande do Sul e o seu potencial produtivo, houve a necessidade de caracterizar a assembleia de insetos presentes em olivais, destacando os que possuem potenciais como praga da cultura. Para tanto, a fauna de insetos foi monitorada por meio de coletas mensais, durante o periodo de dois anos, na copa das oliveiras, utilizando pano de batida e coleta de brotos em cinco municipios da regiao sul do Rio Grande do Sul. Os indices faunisticos analisados foram abundancia, constancia, dominancia e frequencia. A lagarta-da-oliveira Palpita forficifera Munroe 1959 (Lepidoptera: Pyralidae) e as cochonilhas Saissetia oleae (Olivier, 1791) e Saissetia coffeae (Walker, 1952) (Hemiptera: Coccidae) sao os principais insetos fitofagos na cultura da oliveira no Rio Grande do Sul, com potencial para atingir status de praga. Foram registradas onze especies de insetos pela primeira vez para a cultura no Brasil. A ocorrencia de P. forficifera e um novo registro para o estado do Rio Grande do Sul. Palavras-chave: pragas olivicultura, monitoramento, novos registros, lagarta da oliveira. |
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ISSN: | 0103-8478 |
DOI: | 10.1590/0103-8478cr20141477 |