Presentation Title Update on fruit fly and other insect pests
Transcript of Presentation Title Update on fruit fly and other insect pests
![Page 1: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/1.jpg)
www.nt.gov.au
Presentation TitlePresenter name
Date of presentation
Update on fruit fly and
other insect pests
Brian Thistleton
Mango Research Meeting
29 July 2016
DEPARTMENT OF PRIMARY INDUSTRY AND FISHERIES
![Page 2: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/2.jpg)
www.nt.gov.au
Acknowledgements
• Entomology team
– Mary Finlay-Doney
– Natasha Burrows
– Austin McLennan
– Michael Neal
– Lanni Zhang
– Haidee Brown
• Growers who allowed access to their properties for
leafhopper monitoring and fruit fly studies
![Page 3: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/3.jpg)
www.nt.gov.au
Outline
• Mango leafhoppers
• Mango fruit borer
• Update on fruit fly project
![Page 4: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/4.jpg)
www.nt.gov.au
Mango leafhopper – Idioscopus nitidulus
![Page 5: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/5.jpg)
www.nt.gov.au
Mango Plant Hopper
![Page 6: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/6.jpg)
www.nt.gov.au
Sampling techniques
Counts on leaves
Sweep netting
![Page 7: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/7.jpg)
www.nt.gov.au
12
1
3
1
• Idioscopus nitidulus (Hemiptera: Ciccadellidae)
• 8 sites, sampling fortnightly from May 2015
Mango leafhopper surveillance
Leafhoppers Mango trees
Adults
Nymphs
Eggs
Mature leaves
Bud
Flushing leaves
Flushing flowers
Panicles
![Page 8: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/8.jpg)
www.nt.gov.au
12
1
3
1
• Idioscopus nitidulus (Hemiptera: Ciccadellidae)
• 8 sites, sampling fortnightly from May 2015
Mango leafhopper surveillance
Leafhoppers Mango trees
Adults
Nymphs
Eggs
Mature leaves
BudFlushing leaves
Flushing flowersPanicles
![Page 9: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/9.jpg)
www.nt.gov.au
Site 2. Leaf hopper abundance over 12 months comparing life stage and two different survey techniques
0
20
40
60
80
100
120.
Adult sweep
net
Adult leaf
count
nymph leaf
count
![Page 10: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/10.jpg)
www.nt.gov.au
Site 1. Leaf hopper abundance over 12 months comparing life stage and two different survey techniques.
0
20
40
60
80
100
120
Adult sweep
net
Adult leaf
count
Nymph leaf
count
![Page 11: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/11.jpg)
www.nt.gov.au
![Page 12: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/12.jpg)
www.nt.gov.au
Idioscopus nitidulus and I. clypealis1986 I. nitidulus discovered in
Torres Strait
1997 I. nitidulus discovered in
Cape York and NT (Darwin)
1999 I. clypealis discovered in
Cape York
2015 I. clypealis discovered in
NT (Melville Island) on citrus by
NAQS
Also on mainland – from routine
and extra monitoring Berrimah
and Virginia in April (6
specimens)
DNA - ?origin
![Page 13: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/13.jpg)
www.nt.gov.au
Mango Fruit Borer, Citripestis eutraphera (Lepidoptera: Pyralidae)
Confirmed from Cambodia by DNA analysis of a larva in 2012
![Page 14: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/14.jpg)
www.nt.gov.au
![Page 15: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/15.jpg)
www.nt.gov.au
Fruit fly - Market access
1. Fruit fly populations – Darwin and Katherine, 4 years
2. Large scale collections of commercially-harvested untreated fruit
- Exposed to natural field populations of pest fruit flies
3. Cage studies – 2014 – species and variety comparisons
Exposed to extreme levels of pest fruit flies in a non-choice situation
4. Suppression studies
5. Oviposition trials
![Page 16: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/16.jpg)
www.nt.gov.au
Mangoes - Calypso (B74) and Kensington PrideFruit flies – Bactrocera jarvisi, Bactrocera tryoni
• 150+ individual fruit tested• Single sexually mature female placed in a cage with a single mango and observed for 2hrs• Measure FRUIT: Brix, DM% FLY: number of eggs in ovaries• Artificially place eggs in fruit after fly exposure
Results so far• Both species can complete development in immature fruit• Successful oviposition is not possible – unable to penetrate?
3rd December 2015
Fruit fly oviposition trials
![Page 17: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/17.jpg)
www.nt.gov.au
Analysis and write-up:
• Final report – giving results for both projects
• Papers
• Protocol
3rd December 2015
Currently
![Page 18: Presentation Title Update on fruit fly and other insect pests](https://reader034.fdocuments.net/reader034/viewer/2022042707/58a2e7581a28abe4038b8aca/html5/thumbnails/18.jpg)
www.nt.gov.au
Thank you