Effects of Temperature on Development and Survival ofHarmonia axyridis(Coleoptera: Coccinellidae) andChrysoperla externa(Neuroptera: Chrysopidae) Fed onRhopalosiphum padi(Hemiptera: Aphididae)

Abstract

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Survival and Reproduction ofChrysoperla carnea(Stephens)1Fed Different Diets

“…When larvae of C. carnea were fed aphids, the r m was greater, 0.192 times per female per day (Table 1), statistically different than that for the other diets. Auad et al (2014) said that R. padi is an excellent food for development of Chrysoperla externa (Hagen) (Neuroptera: Chrysopidae), because survival of all larval instars and pupae was greater than 90% when fed the aphid. Rodrigues et al (2014) argued that C. carnea preferred aphids rather than thrips.…”

“…The availability of food for aphidophagous predators might depend on the nutrient content or toxicity of prey according to the nutritional substrate or plant host of the phytophagous arthropod. Auad et al (2014) determined that in addition to temperature, development of a predator was affected by nutritional quality of prey, and for several species of Chrysopidae, prey type influenced duration and survival of the larval stage, concluding that lacewings are important predators and preferably feed on several species of Aphididae. Hogervorts et al (2008) reported that aphids are quality food for lacewing larvae.…”

Warm Mesoclimate Advances the Seasonal Dynamics of Harmonia axyridis in Urban Habitats

“…Using our data, this question cannot be reliably resolved, but the assumption of a direct effect on H. axyridis populations appears more probable. The effect on H. axyridis is significant because temperatures are below the maximum temperature for development, which is approximately 30 • C (Auad et al, 2014;Barahona-Segovia et al, 2016) and in this range ambient temperature affects the rate of development of H. axyridis populations positively. Temperature also affects the rate of development of aphid populations, but in a different way than in H. axyridis.…”

Aspectos biológicos e exigências térmicas em quatro espécies de Chrysopidae (Neuroptera)

“…Resultados semelhantes foram estimados para populações de Ch. externa de Juiz de Fora em Minas Gerais, Brasil com temperatura média mensal de 17 °C para os meses de abril e setembro sendo o número de gerações/mês estimado de 1,3 já nos meses de outubro a março com temperatura média mensal de 24 °C foram de 1,9 gerações/mês (Auad et al, 2014).…”

“…Para Ch. externa alimentada com ninfas de Rhopalosiphum maidis (Fitch) o período larval é de 12,72 dias a 24 °C e de 8,26 dias a 32 °C (Auad et al, 2014).…”