Biologia de Agistemus brasiliensis Matioli, Ueckermann & Oliveira (Acari: Stigmaeidae) e sua potencialidade de predação sobre Brevipalpus phoenicis (Geijskes) (Acari: Tenuipalpidae)

Abstract

-The present work aimed to study the biology of Agistemus brasiliensis Matioli, Ueckermann & Oliveira at the following temperatures, namely 15, 20, 25, 30 and 35°C, fed with Brevipalpus phoenicis (Geijskes) and Typha pollen, in laboratory conditions. Life tables were calculated to evaluate the biological parameters. The optimal development of A. brasiliensis took place at 29°C. The values of T (time of generation -days), R 0 and r m at 30°C were, 13.95, 16.25 and 0.20, respectively. The prey consumption of A. brasiliensis was studied at the densities of 5, 10, 20, 40 and 60 leprosis mite females per cage (3 cm in diameter) on citrus fruits at 29°C. The maximum prey, namely 7.6 B. phoenicis females per day, were consumed at a density of 20 leprosis mites. At densities of above 40 leprosis mites per cage, A. brasiliensis oviposits 4.7 eggs per day, in comparison to 2.5 eggs per day at 20 mites per cage.

Population dynamics of phytophagous and predaceous mites on coffee in Brazil, with emphasis on Brevipalpus phoenicis (Acari: Tenuipalpidae)

“…A. brasiliensis) present on coffee plants (Matioli and Oliveira 2007). Individual prey consumption of up to 7.6 B. phoenicis females/day was observed for A. brasiliensis.…”

“…Individual prey consumption of up to 7.6 B. phoenicis females/day was observed for A. brasiliensis. At densities of above 40 B. phoenicis females per leaf disc arena (3 cm in diameter), A. brasiliensis laid 4.7 eggs per day (Matioli and Oliveira 2007).…”

Mites (Arachnida, Acari) on Astronium fraxinifolium Schott (Anacardiaceae) from the Cerrado remnants associated with nickel mining areas

“…Ferla & Moraes 2003, Gerson et al 2003, Nomikou et al 2001, Furtado & Moraes, 1998. Matioli and Oliveira (2007) evaluated A. brasiliensis biological cycle at different temperatures and observed acceptableness of the predator in feeding on B. phoenicis, which suggest the importance of A. brasiliensis as a natural enemy on this relevant citrus pest.…”

Seletividade de produtos fitossanitários sobre o ácaro predador Agistemus brasiliensis Matioli, Ueckermann & Oliveira (Acari: Stigmaeidae)

“…Como agentes de controle biológico, destacamse os ácaros das famílias Phytoseiidae e Stigmaeidae (Moraes, 2002;Matioli & Oliveira, 2007), sendo os pertencentes à família Phytoseiidae os mais estudados e utilizados em programas de controle biológico (McMurtry et al, 1970;Moraes, 1991). Stigmaeidae é considerada a segunda família de maior importância no controle de ácaros fitófagos (Gerson et al, 2003), com representantes encontrados com frequência em citros e outras culturas agrícolas de relevância econômica (Santos & Laing, 1985;Sepasgosarian, 1985;Woolhouse & Harmsen, 1994;Mineiro et al, 2008).…”

“…Os estudos indicaram que a densidade de 20 ácaros-da-leprose por arena proporcionou ao estigmeídeo o consumo de 7,6 B. phoenicis por dia. Em relação à postura diária, verificou-se que densidades acima de 40 ácaros-da-leprose proporcionaram uma média de 4,7 ovos/fêmea/dia (Matioli & Oliveira, 2007).…”