Diadegma insulare development is altered by Plutella xylostella reared on water-stressed host plants

2015 ◽  
Vol 140 (5) ◽  
pp. 364-375 ◽  
Author(s):  
S. Munir ◽  
L. M. Dosdall ◽  
J. T. O'Donovan ◽  
A. Keddie
Keyword(s):  
Plutella Xylostella ◽  
Host Plants ◽  
Diadegma Insulare

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.

Bottom-Up Effect of Different Host Plants on Plutella xylostella (Lepidoptera: Plutellidae): A Life-Table Study on Canola

2010 ◽  
Vol 103 (6) ◽  
pp. 2019-2027 ◽  
Author(s):  
Mahmoud Soufbaf ◽  
Yaghoub Fathipour ◽  
Javad Karimzadeh ◽  
Myron P. Zalucki
Keyword(s):  
Life Table ◽  
Plutella Xylostella ◽  
Host Plants ◽  
Bottom Up

Oviposition of diamondback moth in the presence and absence of a novel host plant

2010 ◽  
Vol 101 (1) ◽  
pp. 99-105 ◽  
Author(s):  
K. Henniges-Janssen ◽  
G. Schöfl ◽  
A. Reineke ◽  
D.G. Heckel ◽  
A.T. Groot
Keyword(s):  
Host Range ◽  
Larval Development ◽  
Host Plant ◽  
Plutella Xylostella ◽  
Range Expansion ◽  
Host Plants ◽  
Diamondback Moth ◽  
Host Range Expansion ◽  
Cabbage Plant ◽  
Novel Host

AbstractThe diamondback moth (DBM, Plutella xylostella L. (Lepidoptera: Plutellidae)) consumes a wide variety of brassicaceous host plants and is a common pest of crucifer crops worldwide. A highly unusual infestation of a sugar pea crop was recorded in Kenya in 1999, which persisted for two consecutive years. A strain (DBM-P) from this population was established in the laboratory and is the only one of several strains tested that can complete larval development on sugar peas. The oviposition acceptance and preference of the DBM-P strain was assessed in the presence of cabbage plants, sugar pea plants or both, in comparison to another strain (DBM-Cj) that was collected from cabbage and is unable to grow on pea plants. As expected, DBM-Cj females preferred to oviposit on cabbage plants. Surprisingly, DBM-P females also laid most eggs on cabbage and very few on peas. However, they laid significantly more eggs on the cabbage plant when pea plants were present. Our findings suggest that DBM-P manifested the initial stages of an evolutionary host range expansion, which is incomplete due to lack of oviposition fidelity on pea plants.

Sign in / Sign up

Export Citation Format

Share Document