RESUMO -A olivicultura é uma atividade recente no Rio Grande do Sul, com poucas informações sobre os insetos associados. A dinâmica populacional de Saissetia oleae (Oliver) e seu parasitismo natural foram avaliados em pomar de Olea europaea L., cultivar Arbequina, mantidos sob manejo convencional, situado em Caçapava do Sul (30°30′43″ S, 53°29′27″ O)-RS, Brasil. As amostragens foram mensais, de abril de 2012 a março de 2013. Em cada ocasião, em 20 plantas sorteadas, e dos quadrantes da copa (norte, sul, leste e oeste), foram retirados dois ramos aleatórios (20 a 30 cm de comprimento, com no mínimo 20 folhas), um interno e outro externo. A maior abundância de S. oleae foi na primavera e no verão, e a temperatura foi o fator que interferiu nesta dinâmica. Saissetia oleae distribuiu-se de forma uniforme entre os quadrantes e entre os ramos internos e externos da copa. Nas folhas, observou-se maior abundância de ninfas de primeiro e segundo instares, e nos ramos de ninfas de terceiro instar, adultos e adultos com ovos. A taxa de parasitismo foi de 3,40%. Termos para indexação: cochonilha-negra, dinâmica populacional, Olea europaea. POPULATION DYNAMICS OF Saissetia oleae (HEMIPTERA: COCCIDAE) ON OLIVE TREESABSTRACT -Oliviculture is a recent activity in Rio Grande do Sul with little information on associated insects. The population dynamics of Saissetia oleae (Oliver) and its parasitism was evaluated in olive orchard, Olea europaea L., cultivar Arbequina, kept under traditional management, situated in Caçapava do Sul (30°30′43″ S, 53°29′27″ W), RS, Brazil. Samples were monthly collected from April 2012 to March 2013. At each occasion 20 trees were randomly selected and, from each quadrant of their canopies (northern, southern, eastern and western) two branches (20 -30 cm -length and containingat least 20 leaves) were removed randomly, one inside and one outside the tree. The greater abundance of S. oleae was in the spring and summer and the temperature was the factor that interfered in this dynamic. Saissetia oleae was distributed in a uniform way between quadrant and between the internal and external branches. In the leaves were observed with greater abundance S. oleae of first and second nympal stages, while in the branches third instar nymphs, adults and adults with eggs. The parasitism rate was 3.40%.
Olive culture is a recent activity in Rio Grande do Sul, Brazil with little information on its scale insects. Abundance and seasonality of armored scale insects (Hemiptera, Diaspididae) and their parasitism was evaluated in olive orchard, Olea europaea L., cultivar Arbequina, in Caçapava do Sul (30°30′43″ S, 53°29′27″ W), RS, Brazil. Samples were monthly collected from April 2012 to March 2013. At each occasion 20 trees were drawn and, from each quadrant of their canopies (northern, southern, eastern and western) two branches (20 - 30 cm - length and contained at least 20 leaves) were randomly removed, respectively from the inner part and the outer part of the canopy. We found five species of Diaspididae, Aonidiella aurantii (Maskell), Hemiberlesia cyanophylli (Signoret), Acutaspis paulista (Hempel), Aspidiotus nerii Bouché and Melanaspis obscura (Comstock). It was not found an unique pattern of abundance, indicating that these species respond differently to temperature variations between seasons. The armored scale insects were evenly distributed among quadrants. Only H. cyanophylli showed differences in abundance between the inner and outer branches. We registered parasitism in all Diaspididae species; the total parasitism rate was 9.78%.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.