Effects of three aphid species (Homoptera: Aphididae) on development, survival and predation of Chrysoperla carnea (Neuroptera: Chrysopidae).

Abstract

The effects of three aphid species (fourth instars only), Aphis gossypii Glover; Myzus persicae (Sulzer) and Lipaphis erysimi (Kaltenbach), on immature development, survival and predation of the common green lacewing, Chrysoperla carnea (Stephens), were determined in the laboratory. Survival rates of C. carnea from first stadium to adult emergence were significantly different among larvae fed different aphid species. When larvae were fed A. gossypii and M. persicae, 94.4Ϯ3.3% (meanϮSE) and 87.6Ϯ5.1% of individuals developed to adults, respectively; whereas only 14.9Ϯ3.4% of individuals developed to adults when fed L. erysimi. The developmental durations of C. carnea larvae were also significantly different among larvae fed the three aphid species. The developmental duration from first stadium to adult emergence was shortest when larvae were fed A. gossypii (19.8Ϯ0.4 d), followed by M. persicae (22.8Ϯ0.2 d), and then L. erysimi (25.5Ϯ0.4 d). The total number of fourth stadium aphids consumed by C. carnea larvae differed significantly among individuals fed different aphid species. Chrysoperla carnea consumed more A. gossypii (292.4) and M. persicae (272.6) than L. erysimi (146.4). Although total numbers of aphids consumed by the three C. carnea larval stadia differed significantly, the proportions of aphids consumed by each larval stadium to the total number of aphids consumed were similar, 3.9-7.1% by the first stadium, 12.0-16.8% by the second stadium, and 78.1-83.9% by the third stadium.

Incorporating natural enemy units into a dynamic action threshold for the soybean aphid,Aphis glycines(Homoptera: Aphididae)

“…the number of aphids consumed or parasitized per day) of C. septempunctata , H. axyridis and Aphelinus certus on A. glycines was determined previously . The voracities of Chrysopidae, Syrphidae and Aphidoletes were estimated from data for Chrysoperla carnea (Stephens) feeding on Aphis gossypii Glover and for Allograpta obliqua (Say) and Aphidoletes aphidimyza (Rondani) feeding on various aphid species. A. obliqua and C. carnea were selected as representatives of the taxa Syrphidae and Chrysopidae, respectively, as they are the most common representatives of these taxa in Ontario .…”

“…the number of aphids consumed or parasitized per day) is key to developing action thresholds that incorporate their impact. The voracity of the main coccinellid species and the parasitoid Aphelinus certus Yasnosh for A. glycines , as well as of lacewings, syrphids and Aphidoletes on other aphid species, is known . However, for O. insidiosus feeding on A. glycines , this information was only available for adult females, and not for males or nymphs.…”

Effects of daily fluctuating temperatures on the Drosophila–Leptopilina boulardi parasitoid association

“…Until now, very few studies considered the effects of daily thermal fluctuations on host-parasitoid relationships (Geden, 1997;Sigsgaard, 2000;Liu & Chen, 2001;Blanford et al, 2003;Mironidis & Savopoulo-Soultani, 2009;Reznik et al, 2009;Bahar et al, 2012;Bannerman & Roitberg, 2014) producing contrasting results. For example, Awadalla (1996) showed that temperature fluctuations during development led to a decrease in the success of the parasitoid Trissolcus megallocephalus on the green stink bug (Nezara viridula) compared to that observed in a constant thermal regime.…”

Lettuce cropping with less pesticides. A review

“…Many species are known predators or parasitoids of lettuce aphids ( Table 2). The larva of the generalist predator Chrysoperla carnea can ingest up to 270 Myzus persicae aphids per day (Liu and Chen 2001). Aphidophagous syrphids are other generalist predators that could participate in the management of the lettuce aphid.…”