The impact of flower head endophages on the seed set of a native population of Chromolaena odorata (L.) King & Robinson (Asteraceae)
Document title: The impact of flower head endophages on the seed set of a native population of Chromolaena odorata (L.) King & Robinson (Asteraceae)
Journal: Bioikos
Database: PERIÓDICA
System number: 000336607
ISSN: 0102-9568
Authors: 1
1
1
1
Institutions: 1Universidade Estadual de Campinas, Instituto de Biologia, Campinas, Sao Paulo. Brasil
Year:
Season: Jul-Dic
Volumen: 24
Number: 2
Pages: 105-112
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, analítico
English abstract Chromolaena odorata (L.) King & Robinson, also known as siam weed, has negatively affected the ecology of several tropical and subtropical regions of the world and has caused them economic losses. The biocontrol of C. odorata is a challenge for many countries; however, several phytophagous insects are natural enemies of C. odorata. Here we present the main flower head feeding insects associated with a native population of C. odorata. The aims of this study were: (1) to evaluate both individual and aggregated impacts of endophagous insects on C. odorata seed production, and (2) to provide information on host specificity of each endophagous species at local and regional scales. The study was conducted in the cerrado area of the Reserva Biológica de Mogi-Guaçu, São Paulo, Brazil. We found 17 endophagous species from seven genera. We estimated that the endophages damaged at least 22% of all of the seeds C. odorata produced. Tephritid species were only found on the plant species from the tribe Eupatorieae, whereas lepidopteran and agromyzid species were found on the plant species from two or more Asteraceae tribes
Portuguese abstract Chromolaena odorata (L.) King & Robinson tem causado impactos negativos, tanto ecológicos quanto econômicos, em regiões tropicais e subtropicais de diversas partes do mundo. Embora já se conheçam vários insetos fitófagos de C. odorata, o controle biológico dessa planta ainda é um desafio em muitos países. Neste artigo são apresentados os principais insetos associados a capítulos de uma população nativa de C. odorata. Os objetivos desse estudo foram: (1) investigar os impactos dos insetos endófagos sobre a produção de sementes de C. odorata, e (2) fornecer informações sobre a especificidade de hospedeiras dos insetos endófagos. O estudo foi realizado na área de cerrado da Reserva Biológica de Mogi-Guaçu, São Paulo, Brasil. Foram encontradas 17 espécies de insetos endófagos de sete gêneros. A perda estimada de sementes não dispersas por insetos endófagos foi de, pelo menos, 22% do total produzido. As moscas da família Tephritidae foram encontradas somente em plantas hospedeiras da tribo Eupatorieae, enquanto mariposas (Lepidoptera) e moscas da família Agromyzidae foram encontradas em plantas hospedeiras de duas ou mais tribos distintas
Disciplines: Biología
Keyword: Ecología,
Insectos,
Malezas,
Asteraceae,
Chromolaena odorata,
Mosca de la fruta,
Control biológico,
Brasil
Keyword: Biology,
Ecology,
Insects,
Weeds,
Asteraceae,
Chromolaena odorata,
Fruit fly,
Biological control,
Brazil
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