Areas planted with Eucalyptus urophylla S.T. Blake variety platyphylla F. Muell. (Myrtaceae) expand annually in most regions of Brazil. Many lepidopteran species defoliate this plant, but with damage varying per species. The objective of this study was to identify the pest status of lepidopteran defoliators based in the faunistic analysis of these insects and of their natural enemies on E. urophylla variety platyphylla plantations in a representative producing region of Brazil. Adult moths of lepidopterans and of their natural enemies were captured using a light trap, installed every two weeks, from September 2016 to August 2018. A total of 183, 10, three and 139 lepidopteran species was captured and classified as primary, secondary, without defined importance to eucalypt plants and non-identified with 1,419, seven, 465 and 876 individuals, respectively. Two primary pest species were constants, two accessories and six accidentals and all secondary ones were accidentals. Six primary pest species were common and dominant and four non-dominants. Faunistic indices indicated the main lepidopteran species that should be monitored in pest management programs. Seven hymenopteran species (65 individuals), three dipterans (49 individuals) and two hemipterans (four individuals) were the natural enemies collected using light traps. The monitoring of lepidopteran pests with light traps can contribute to the management and to reduce damage and control costs for these species, besides identifying natural enemies for biological control programs in Eucalyptus plantations.
Nas comunidades vegetais, as plantas podem interagir de maneira positiva, negativa ou neutra. Essa á uma característica muito importante para garantir a sobrevivência, além de fornecer informações para construção de conhecimento e produtos a serem utilizados no controle específico de algumas plantas daninhas. O objetivo do trabalho foi realizar revisão bibliográfica sobre os efeitos da alelopatia em comunidades vegetais, podendo ser observado tanto nas competições intraespecífica quanto na interespecífica. Com base nos resultados da literatura é provável que os compostos alelopáticos possam alterar componentes do ecossistema que, por sua vez, conduzem processos e interações, as quais modificam a composição e dinâmica das comunidades vegetais. No entanto, uma grande lacuna na pesquisa da alelopatia recai sobre a inexistência de metodologias a serem aplicadas em campo que demonstrem o papel desses compostos no desenvolvimento interespecífico e ao longo da comunidade. Desse modo, faz-se necessário que os estudos levem em consideração quais as fontes de variação entre as espécies, os tipos de impactos causados nas espécies associadas e, principalmente, os seus efeitos em nível de comunidade.
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.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.