THE EFFECTS OF SELECTED DIETARY SUPPLEMENTS ON SURVIVAL AND REPRODUCTION OF ORIUS INSIDIOSUS (SAY) (HEMIPTERA: ANTHOCORIDAE)

Abstract

Diets combining the eggs of Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) with corn pollen, green snap bean pods, and adult western flower thrips [Frankliniella occidentalis Pergrande (Thysanoptera: Thripidae)] were evaluated for their effects on the predatory anthocorid bug Orius insidiosus (Say). Nymphs fed only corn pollen did not complete development. Fourteen percent of the nymphs fed only green bean pod sections reached the adult stage. Females reared on a diet of bean pod sections did not oviposit. Nymphal survival, adult longevity, and fecundity were greatest for diets containing both E. kuehniella and green bean pods. When diets of bean pod sections and eggs of E. kuehniella were supplemented with pollen, egg production was slightly increased. Adult females provided with thrips were not more fecund than females maintained on a diet of eggs of E. kuehniella. Egg production increased significantly with the number of thrips consumed, demonstrating the importance of adult nutrition.

Comparison of the reproductive potential of three Orius species, O. strigicollis, O. sauteri, and O. minutus (Heteroptera: Anthocoridae), using eggs of the Mediterranean flour moth as a food source

“…They also suggested that some nutrition contents in the diet might affect the fecundity of the bug. Many Orius species can be successfully reared on E. kuehniella eggs (Alauzet et al, 1992(Alauzet et al, , 1994Tommasini and Nicoli, 1993;Richards and Schmidt, 1996;Cocuzza et al, 1997;Vacante et al, 1997;Honda et al, 1998;Yano et al, 2002). However, the existence of non-ovipositing females is an important problem from the viewpoint of quality control in the mass-production of Orius species as a biological control agent.…”

Comparative suitability of aphids, thrips and mites as prey for the flower bug Orius sauteri (Hemiptera: Anthocoridae)

“…As for most predators, the variety and quality of food consumed influences Orius spp. development, reproduction and overall biological performance (Kiman & Yeargan, 1985;Bush et al, 1993;Richard & Schmidt, 1996). Consequently, diet composition is an important consideration in mass-reared cultures of these species.…”

Biologia de Orius insidiosus (Say) (Hemiptera: Anthocoridae) Alimentado com Caliothrips phaseoli (Hood) (Thysanoptera: Thripidae)

“…Resultados semelhantes foram obtidos para ninfas de O. insidiosus alimentadas com F. insularis, cujo período de desenvolvimento foi de 10,4 dias (Rezende 1990) e de 10,8 dias quando alimentadas com F. occidentallis (26°C, 70% UR e 16h de fotofase) (Tommasini & Nicoli 1994). Richards & Schmidt (1996) Os resultados do consumo médio de C. phaseoli por O. insidiosus (Tabela1) assemelharam-se aos obtidos por Rezende (1990) Rezende (1990), isto é, 80,7 ovos, quando o alimento foi F. insularis. Essa fecundidade é superior à encontrada por Tommasini & Bennuzzi (1996), que foi de 65,7 ovos para fêmeas de O. insidiosus alimentadas com F. occidentallis e 20,3 ovos para fêmeas desse predador alimentadas com S. variabilis.…”

“…Alguns autores (Kiman & Yeargan 1985, Richards & Schmidt 1996 Tommasini & Nicoli (1993), que encontraram 17,1 dias para esse predador alimentado com F. occidentalis.…”

“…Segundo os mesmos autores, adultos alimentados apenas com S. variabilis apresentaram longevidade de 14,3 dias e quando alimentados com ovos de H. virescens e pólen, de 40,4 dias. Richards & Schmidt (1996) obtiveram 43,7 dias de longevidade para O. insidiosus alimentados com ovos de A. kuehniella. Para O. sauteri alimentada com T. palmi, a longevidade dos adultos foi em média de 8,7 dias.…”