Effects of Wild and Cultivated Host Plants on Oviposition, Survival, and Development of Diamondback Moth (Lepidoptera: Plutellidae) and Its Parasitoid Diadegma insulare (Hymenoptera: Ichneumonidae)

1996 ◽  
Vol 25 (4) ◽  
pp. 825-833 ◽  
Author(s):  
A. B. Idris ◽  
E. Grafius
Keyword(s):  
Host Plants ◽  
Diamondback Moth ◽  
Diadegma Insulare ◽  
Survival And Development

scholarly journals The selective sequestration of glucosinolates by the cabbage aphid severely impacts a predatory lacewing

2020 ◽  
Author(s):  
Ruo Sun ◽  
Xingcong Jiang ◽  
Michael Reichelt ◽  
Jonathan Gershenzon ◽  
Daniel Giddings Vassão
Keyword(s):  
Host Plants ◽  
Strongly Correlated ◽  
Cabbage Aphid ◽  
Biochemical Effects ◽  
Self Defense ◽  
Aliphatic Glucosinolates ◽  
Survival And Development ◽  
Management Approaches ◽  
Brassicaceae Family

AbstractThe cabbage aphid Brevicoryne brassicae is a notorious agricultural pest that specializes on plants of the Brassicaceae family, which are chemically defended by glucosinolates. By sequestering glucosinolates from its host plants and producing its own activating enzyme (myrosinase), this aphid employs a self-defense system against enemies paralleling that in plants. However, we know little about the metabolic fate of individual glucosinolates during aphid sequestration and activation and about the biochemical effects of this defense on aphid enemies. Here, we probed these questions focusing on B. brassicae and a predatory lacewing, Chrysoperla carnea. We found that distinct glucosinolates were accumulated by B. brassicae at different rates, with aliphatic glucosinolates being taken up more quickly than indolic ones. B. brassicae myrosinase enzymatic activities toward different glucosinolates were strongly correlated to their rates of accumulation in vivo. Surprisingly, after simulated predation, the production of toxic isothiocyanate products (ITCs) was quantitatively outweighed by less toxic products such as nitriles and ITC-conjugates. Nevertheless, the defensive cocktails significantly impaired C. carnea development. Tissue-specific quantification of glucosinolate metabolites revealed that the lacewings employ both conjugation and mobilization to reduce the toxicity of aliphatic ITCs, but these strategies were only partially effective. These results clarify the metabolic fates of glucosinolates after sequestration by an aphid herbivore and further in a higher trophic level, as well as the consequences for predator survival and development, and might be instructive for integrative pest management approaches targeting the cabbage aphid.

Host Plants Used by Gypsy Moths Affect Survival and Development of the Parasitoid Cotesi melanoscela

1992 ◽  
Vol 21 (1) ◽  
pp. 173-177 ◽  
Author(s):  
John H. Werren ◽  
Michael J. Raupp ◽  
Clifford S. Sadoff ◽  
Thomas M. Odell
Keyword(s):  
Host Plants ◽  
Gypsy Moths ◽  
Survival And Development

Influence of Selected Insecticides on the Population Dynamics of Diamondback Moth (Lepidoptera: Plutellidae) and Its Parasitoid, Diadegma insulare (Hymenoptera: Ichneumonidae), in Cabbage

2003 ◽  
Vol 38 (1) ◽  
pp. 59-71 ◽  
Author(s):  
Travis A. Hill ◽  
Rick E. Foster
Keyword(s):  
Population Dynamics ◽  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Diadegma Insulare ◽  
Economic Thresholds ◽  
Percent Parasitism

The effects of insecticides on the diamondback moth, Plutella xylostella (L)., and its parasitoid, Diadegma insulare (Cresson), were evaluated in the field. Insecticides applied for control of the diamondback moth caused variations in parasitism by D. insulare ranging from 20 to 84%. Permethrin applications were effective at controlling diamondback moth. Applications of spinosad also resulted in low diamondback moth populations; however, percent parasitism was higher than in untreated plots and over 4× higher than in plots treated with permethrin. Selective materials that conserve D. insulare populations and maintain diamondback moth populations below economic thresholds may reduce the frequency of application, thus prolonging the efficacy of these materials.

Sign in / Sign up

Export Citation Format

Share Document