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Advances in Behavior-Based Tactics for Management of Spotted-Wing Drosophila” — watch this one-hour 2022 SCRI NIFA Spotted-Wing Drosophila Management Team Webinar which aired on Thursday, December 8th, 2022 at 12:00pm EST and learn. Watch it here: www.youtube.com/watch?v=lPkQhWafZbk

What are behavior-based tactics, you ask? Well this is when entomologists figure out what control tactics can be used against an insect pest, based on how it lives. Think about mating disruption, used against oriental fruit moth, to prevent the male moths from mating with the female moths by flooding the orchard with volatile sex pheromones. With SWD, there may be ways to use feeding attractants, called kairomones, to attract the insects away from the fruit and then kill them. This is an attract-and-kill tactic.

SWD males on red sticky card trap
Male SWD, circled in yellow, can be readily detected on red sticky card traps. Photo: J. Carroll

Other insect behaviors being investigated include visual cues the insects use — thus we now have red traps for monitoring when SWD arrives. Attend and learn about the promising and affordable behavioral control tactics this team of talented entomologists is developing against SWD.

SWD parasitoid Ganapis brasiliensis laying an egg into an SWD larva inside a blueberry.
The SWD parasitoid Ganapsis brasiliensis laying an egg into an SWD larva inside a blueberry. This parasitoid was collected in Asia. Photo: K. Daane

There is be a brief update on biological control. There are many tiny wasps that like to lay eggs in SWD, some native and some, which are more selective towards SWD, from Asia. Members of this team now have over ten years of work on these foreign natural enemies and they are on the cusp of being able to release these against SWD.

To watch this webinar on behavior-based SWD management, please follow this link: www.youtube.com/watch?v=lPkQhWafZbk

From the Sustainable Spotted Wing Drosophila Management team, swdmanagement.org/

Sustained trap catch (swd in traps two weeks in a row) was reached on Monday in Clinton county. A single female SWD was trapped in a drowning jar trap in a blueberry planting on July 11.

Across the state, many SWD-susceptible crops are currently being harvested. Trap catch numbers have stayed low at all locations, but don't let your guards down until all the fruit is off the planting.

In Essex county, 4 male and 3 female SWD were trapped in drowning jar traps in a raspberry planting. In Washington county, 3 female SWD were trapped in a drowning jar trap in a tart cherry block, AND 1 female was trapped in a drowning jar and 4 males on a sticky card in a blueberry planting.

Half of the twenty two counties where we are monitoring for SWD are now at sustained trap catch.

The first SWD for 2022 from Chemung county (a single male) was trapped today July 7th in a blueberry planting. This is two months after the first trap catch overall in the state, and leaves three of the twenty two counties in which we are monitoring without a single trap catch yet this season.

Thank you to Liz Alexander for servicing this trap.

On Tuesday July 5 we reached sustained trap catch in two more counties: Onondaga and Tioga. In Onondaga, 2 females were trapped in drowning jar traps in a blueberry planting which is currently open for U-pick. In Tioga county, 3 male and 3 female SWD were trapped in drowning jar traps in a blueberry planting which will be ready to pick next week.

Many thanks to Anya Osatuke for servicing these traps!

 

Sustained catch was reached in Saratoga county today June 30th. The trap is set in a blackberry planting, where the fruit are sizing up but are still green. There is a ripe raspberry block nearby to the trap.

1 male was trapped on a sticky trap, and 1 female was trapped in a drowning jar trap.

Many thanks to Natasha Field for servicing these traps!

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We’d love to hear from you to learn what you think about the SWD blog and its value to your operation and work. The Cornell SWD blog delivers trap catch information generated by the monitoring network. Several counties are now at sustained trap catch. We need your input on the usefulness of the SWD blog posts.

Please take a few minutes to complete our Value of the SWD blog Qualtrics survey about the SWD blog. This will help us improve our information delivery! Here is the direct url to the survey.

https://cornell.ca1.qualtrics.com/jfe/form/SV_3IOcXAL2ysRBSBM

Thank you for providing your perspectives on the usefulness of the SWD blog posts. Wishing you a successful growing season!

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