Population dynamics of bruquines in fruits of Cordia trichotoma in the Atlantic Forest biome

• Autor(a) principal: Pessotto, Marciane Danniela Fleck
• Data de Publicação: 2022
• Outros Autores: Costa, Ervandil Corrêa
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/2106
• topic: Boraginaceae; Entomology; Chrysomelidae; Boraginaceae; Entomologia; Chrysomelidae

Coleoptera from Bruchinae subfamily can cause several damage to Cordia trichotoma (Vell.) Arrab. ex Steud. (Boraginaceae) seeds, especially at their larval stage. Bruquines biological control occurs at the field by the hymenoptera parasitoid action. The objective of this research was to study the population cycles of the bruquines and the hymenoptera parasitoids associated to them, as well as to relate their occurrence to the meteorological variables of temperature, relative humidity and precipitation. Fruits from seven trees, located in Atlantic Forest biome, municipality of Taquaruçu do Sul, RS, Brazil, were collected between 2015 and 2016. Bruquines were identified as Amblycerus longesuturalis (Pic,1954) and Amblycerus profaupar Ribeiro-Costa, 2000 (Chrysomelidae: Bruchinae). The ovipositions and worms of bruquines were visualized in the fruits of all the carried out sampling. A. profaupar was the most abundant species in both years of evaluation, having its climax on fruits collected in June. Bruquine larvae are parasitized by hymenopterans from genes Bracon, Mirax, Omeganastatus and Triapsis. In general, the high relative humidity favors the oviposition of the bruquines, while the low ones favor the presence of pupae of Amblycerus species in C. trichotoma fruits.