A three-year field study on the biological control of diamondback moth (Plutella xylostella) in Saskatchewan, Canada

2016 ◽  
Author(s):  
Md Habibullah Bahar
Keyword(s):  
Biological Control ◽  
Field Study ◽  
Plutella Xylostella ◽  
Diamondback Moth

Dynamics of diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae), in cabbage under intercropping, biological control and Bt-based sprays

1969 ◽  
Vol 87 (1-2) ◽  
pp. 31-49
Author(s):  
Ángel L. González-Rodríguez ◽  
Raúl Macchiavelli
Keyword(s):  
Biological Control ◽  
Population Dynamics ◽  
Bacillus Thuringiensis ◽  
Field Study ◽  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Cotesia Plutellae ◽  
Larval Parasitoid ◽  
Head Formation ◽  
Companion Crop

A field study (1998-99) was conducted at the Juana Díaz Substation (AESUPR) to determine the population dynamics of Plutella xylostella (L.) in cabbage in a monoculture and in relay-type substitutive dicultures of cabbage/tomato or cabbage/wedelia. In 1998, subplots were created by spraying half of the main plots with Bacillus thuringiensis (Bt)-based products. All treatments, except for the control monoculture, were sprayed with Bt-based products in 1999. Cotesia plutellae Kurjumov, a larval parasitoid of P. xylostella, was released augmentatively for biological control. Tomato, as a companion crop, showed a tendency for reducing P. xylostella densities in cabbage, reduced the levels of C. plutellae parasitism and competed with cabbage, causing fewer and smaller heads. Bt-based sprays reduced P. xylostella densities, but these were at damaging levels at the critical stages of cupping and head formation, thus permitting cosmetic damage to cabbage heads. Cotesia plutellae did not regulate the P. xylostella population, thus resulting in parasitism levels of 65.3 and 11.6% in the unsprayed monoculture in 1998 and 1999, respectively. The legume Crotalaria juncea L. as a border did not improve parasitism by C. plutellae. The interpretation and application of the results are discussed. 

scholarly journals Anthocoris nemorum (Heteroptera: Anthocoridae) as predator of cabbage pests – voracity and prey preference

2019 ◽  
Vol 21 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Marie-Louise Rugholm Simonsen ◽  
Annie Enkegaard ◽  
Camilla Nordborg Bang ◽  
Lene Sigsgaard
Keyword(s):  
Biological Control ◽  
Plutella Xylostella ◽  
Frankliniella Occidentalis ◽  
Diamondback Moth ◽  
Western Flower Thrips ◽  
Potential Candidate ◽  
Model Species ◽  
Flower Thrips ◽  
Cabbage Pests ◽  
Cabbage Aphids

Laboratory experimentswere performed with adult female Anthocoris nemorum (Linnaeus) (Heteroptera: Anthocoridae) at 20°C ± 1°C, L16:D8, 60–70% RH to determine voracity and preference on cabbage aphids (Brevicoryne brassicae L.) (Hemiptera: Aphididae), diamondback moth larvae (Plutella xylostella L.) (Lepidoptera: Plutellidae) and Western flower thrips (Frankliniella occidentalis Pergande) (Thysanoptera: Thripidae) (model species for cabbage thrips (Thrips angusticeps Uzel) (Thysanoptera: Thripidae)). When offered individually, A. nemorum readily accepted all three species with no significant differences in consumption. When aphids and moth larvae were offered simultaneously, A. nemorum showed preference for the latter (numbers eaten and biomass consumed). When aphids and thrips were offered together, A. nemorum preferred thrips in terms of numbers eaten but preferred aphids in terms of biomass consumed. The results showed that A. nemorum is a voracious predator of B. brassicae, P. xylostella and F. occidentalis and can therefore be considered as a potential candidate for biological control in cabbage.

Phylogenetic placement and evidence for horizontal transfer of Wolbachia in Plutella xylostella (Lepidoptera: Plutellidae) and its parasitoid, Diadegma insulare (Hymenoptera: Ichneumonidae)

2010 ◽  
Vol 142 (1) ◽  
pp. 57-64 ◽  
Author(s):  
Philip D. Batista ◽  
B. Andrew Keddie ◽  
Lloyd M. Dosdall ◽  
Harriet L. Harris
Keyword(s):  
Biological Control ◽  
North America ◽  
Plutella Xylostella ◽  
Host Species ◽  
Evolutionary History ◽  
Diamondback Moth ◽  
Management Tool ◽  
Insect Parasitoid ◽  
Phylogenetic Placement ◽  
Diadegma Insulare

AbstractThe diamondback moth, Plutella xylostella (L.), is a global pest of cruciferous crops (Brassicaceae). It has developed resistance to virtually all known insecticides, and biological control has become an important management tool. In North America the parasitoid Diadegma insulare (Cresson) has been used successfully to reduce diamondback moth populations. We document the presence of the α-proteobacterial endosymbiont Wolbachia and its associated bacteriophage WO in P. xylostella and D. insulare and examine the phylogenetic relationships of Wolbachia and WO in both host species. Our results suggest that Wolbachia and WO have been horizontally transferred in this insect–parasitoid system in recent evolutionary history. Knowledge of the dynamics of Wolbachia in P. xylostella and D. insulare may be an important factor in future control of this pest in the field.

scholarly journals The Biology and Ecology of the Diamondback Moth, Plutella xylostella (L.) in Eastern Ontario Revisited

2018 ◽  
Author(s):  
Tina Dancau
Keyword(s):  
Biological Control ◽  
Population Dynamics ◽  
Next Generation Sequencing ◽  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Biological Control Agents ◽  
Review Of The Literature ◽  
Globally Distributed ◽  
Generation Sequencing

Diamondback moth, Plutella xylostella Linnaeus (Lepidoptera: Plutellidae) is a globally distributed pest on brassicaceous crops. This study aimed to follow up with aspects of earlier research, mainly to revisit the potential for overwintering of diamondback moth in the Ottawa area, to investigate present day population dynamics using a life-table approach and to use next generation sequencing to describe the diamondback moth microbiome. A review of the literature has reaffirmed that diamondback moth may not be capable of overwintering in Ottawa with populations likely migrant-driven. The population dynamics and parasitoid community appear to be unaltered after 65 years. The microbiome of diamondback moth larvae was dominated by Enterococcaceae, a family of bacteria hypothesized to aid in resistance and detoxification. This can provide opportunities for the introduction of new biological control agents and tools for diamondback moth management in the future.

scholarly journals Biological control of the diamondback moth,Plutella xylostella: A review

2005 ◽  
Vol 15 (8) ◽  
pp. 763-789 ◽  
Author(s):  
Muhammad Sarfraz ◽  
Andrew B Keddie ◽  
Lloyd M Dosdall
Keyword(s):  
Biological Control ◽  
Plutella Xylostella ◽  
Diamondback Moth

Reproductive attributes of the eulophidOomyzus sokolowskii, a biological control agent of diamondback moth,Plutella xylostella(Lepidoptera: Plutellidae)

2008 ◽  
Vol 18 (8) ◽  
pp. 753-765 ◽  
Author(s):  
Ruo-Xia Chen ◽  
Feng Zhang ◽  
Wei-Guo Huangfu ◽  
Hong-Yan Yao ◽  
Jin-Bo Zhou ◽  
...  
Keyword(s):  
Biological Control ◽  
Plutella Xylostella ◽  
Biological Control Agent ◽  
Diamondback Moth ◽  
Control Agent

scholarly journals Virulence of the plant-associated endophytic fungus Lecanicillium muscarium to diamondback moth larvae

2019 ◽  
Vol 72 ◽  
pp. 253-259 ◽  
Author(s):  
Michal Kuchár ◽  
Travis R. Glare ◽  
John G. Hampton ◽  
Ian A. Dickie ◽  
Mary C. Christey
Keyword(s):  
Biological Control ◽  
New Zealand ◽  
Endophytic Fungi ◽  
Plutella Xylostella ◽  
Endophytic Fungus ◽  
Diamondback Moth ◽  
Biological Control Agents ◽  
Control Applications ◽  
Lecanicillium Muscarium ◽  
Fungal Isolates

Plutella xylostella (diamondback moth) is a prominent pest of brassicas which is now resistant to most insecticides. Despite years of research, the range of available products used in biological control of diamondback moth is still somewhat limited. We isolated putative endophytic fungi from New Zealand cabbage plants to search for unique biological control agents of diamondback moth larvae. The larvae were fed leaf discs from commercially grown cabbage covered in spores from endophytic fungal isolates to test the insecticidal properties of these fungi. Twenty of the 52 fungal isolates tested failed to kill any diamondback moth larvae. However, three isolates of Lecanicillium muscarium induced mortality greater than 80%. While these isolates have potential for use in biological control applications, further research into propagation, formulation, and method, rate and timing of application is needed.

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