Effect of Tea Saponin-Treated Host Plants on Activities of Antioxidant Enzymes in Larvae of the Diamondback Moth Plutella xylostella (Lepidoptera: Plutellidae)

2018 ◽  
Vol 47 (3) ◽  
pp. 749-754 ◽  
Author(s):  
Shuo Lin ◽  
Yixin Chen ◽  
Yan Bai ◽  
Hongjiao Cai ◽  
Hui Wei ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Plutella Xylostella ◽  
Host Plants ◽  
Diamondback Moth ◽  
Tea Saponin

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.

Insecticidal activities of tea saponin against diamondback moth, Plutella xylostella and aphid, Aphis craccivora

Toxin Reviews ◽  
2017 ◽  
Vol 37 (1) ◽  
pp. 52-55 ◽  
Author(s):  
Shudh Kirti Dolma ◽  
Eshita Sharma ◽  
Ashu Gulati ◽  
S.G. Eswara Reddy
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Aphis Craccivora ◽  
Tea Saponin ◽  
Insecticidal Activities

Climate and host plants mediating seasonal dynamics and within-plant distribution of the diamondback moth (Plutella xylostella)

2020 ◽  
Vol 134 ◽  
pp. 105172 ◽  
Author(s):  
Elizeu S. Farias ◽  
Abraão A. Santos ◽  
Arthur V. Ribeiro ◽  
Daiane G. Carmo ◽  
Jhersyka S. Paes ◽  
...  
Keyword(s):  
Plutella Xylostella ◽  
Seasonal Dynamics ◽  
Host Plants ◽  
Diamondback Moth ◽  
Plant Distribution

Interspecific competition between Diadegma semiclausum Hellen and Diadegma mollipla (Holmgren), parasitoids of the diamondback moth, Plutella xylostella (L), feeding on a new host plant

2007 ◽  
Vol 98 (2) ◽  
pp. 135-143 ◽  
Author(s):  
A. Rossbach ◽  
B. Löhr ◽  
S. Vidal
Keyword(s):  
Host Plant ◽  
Interspecific Competition ◽  
Plutella Xylostella ◽  
Host Plants ◽  
Diamondback Moth ◽  
Time Interval ◽  
Pest Species ◽  
Progeny Production ◽  
Parasitoid Species ◽  
New Host

AbstractInterspecific competition between an introduced parasitoid species aimed at controlling a herbivorous pest species and a native parasitoid parasitising the same host may influence the success of classical biological control programmes. In Kenya, interspecific competition between an introduced and a local parasitoid on two diamondback moth populations (DBM, Plutella xylostella) was investigated on two different host plants. We tested simultaneous and delayed competition of the local parasitoid Diadegma mollipla Holmgren and its exotic congenus D. semiclausum Hellen on a newly aquired DBM host plant (snowpea) in the laboratory. Under simultaneous competition, D. mollipla produced more progeny than D. semiclausum on snowpea. A head start of D. Mollipla, of four and eight hours before its congenus was introduced, resulted in a similar number of progeny of both species. In delayed competition (time intervals of 24 h, 48 h and 72 h), progeny production was similar for both parasitoids when the time interval was 24 h, irrespective of which species parasitized first. More progeny was produced by the species which attacked first, when the time interval was greater than 24 h, although it was only significant at 72 h. Competitive abilites of both parasitoids on the new host plant differed largely between laboratory and semi-field conditions. The influence of two host plants (snowpea and cabbage) on competition was studied in the greenhouse with different host and parasitoid densities. Parasitism levels of D. semiclausum were significantly higher than those of D. mollipla, regardless of host plant, host and parasitoid densities, but progeny production of D. mollipla on snowpea was still slightly higher than on cabbage. As compared to the confinement of parasitoids and larvae to small containers, D. mollipla parasitized very few larvae in the cages. Competitive ability of the two parasitoid species tested was influenced both by the density of the searching females and by parameters related to either the host plant and/or the herbivorous hosts.

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