Pest Of The Month: Spotted Wing Drosophila

Pest Of The Month: Spotted Wing Drosophila

Identification

This pest is of typical size and appearance for a drosophila fruit fly with an adult body length of approximately 2 to 3 millimeters, red eyes, yellowish-brown body color, and dark bands on the abdomen. The males are relatively distinctive, with a small dark spot on the wing near the tip, hence the name “spotted wing.” Florida growers should be on the lookout for the appearance of this pest.

Survival And Spread

In the fall of 2008, the first reports emerged of an unfamiliar fruit pest in the Watsonville area of California when “vinegar fly” (Drosophila) larvae were found in maturing fruits of raspberries and strawberries. This was unusual, as vinegar flies (including the well-known and ubiquitous D. melanogaster) typically lay eggs on damaged and decaying fruit. This pest, new to North America, was determined to be Drosophila suzukii.

For more information on spotted wing drosophila, click here.

Fly populations are now widespread in central California, and detections have been made statewide. High fly counts have been reported again in raspberry fields this summer in California, and flies have been found infesting fresh cherries with severe production losses reported in some areas.

Of particular concern is the high reproductive potential of the fly. Local populations can go through multiple generations and build to very large population sizes in a single cropping cycle. As soon as larvae hatch from the egg, they begin feeding inside the fruit. Within as little as two days, the fruit begins to collapse around the feeding site. Mold and infestation by secondary pests contribute to further damage to fruit.

In mid-season, the adult life span is typically three to nine weeks. However, flies emerging late in the season overwinter and may live many months until the following summer. Adult activity is highest at about 68°F and declines above 86°F. Females may lay seven to 16 eggs per day.

As the fly is reported to thrive at cool temperatures, Florida’s winter and spring berry crops probably are at highest risk. However, the discovery of this fly in the middle of summer casts some doubt on the assessment of the earlier observations on heat tolerance of the pest.

Topics:

Leave a Reply

Berries Stories
BerriesBuilding A Better Black Raspberry
March 27, 2015
Studies focusing on consumer preference, aphid resistance, heat tolerance, and genetics aim to capitalize on an expanding market. Read More
Fresh From Florida Strawberry Parfait recipe
BerriesNew Partnership Sends Florida Strawberries To Puerto Rico
March 26, 2015
Latest addition extends Sunshine State’s agricultural export reach in the Caribbean. Read More
BerriesGeorgia Blueberry Growers Suffer Chill Damage
March 23, 2015
On early varieties, some growers lost as much as half their crops. Read More
BerriesSecond Florida Strawberry Picking Challenge Packs Philanthropic Punch
February 25, 2015
Fundraising event at Wish Farms in Plant City raises $76,000 for Redlands Christian Migrant Association. Read More
BerriesGrowing Greenhouse Strawberries Can Pay
February 24, 2015
British trial shows much lower disease pressure, higher quality and bigger yields. Read More
BerriesFlorida Blueberry Crop Sitting Pretty — Weather Permitting
February 18, 2015
Barring a hard-freeze event, growers agree the season’s offering looks fruitful. Read More
BerriesUniversity Of California Davis, California Strawberry Commission Settle Lawsuit
February 10, 2015
The renewed partnership includes plans to develop varieties with the addition of a new breeder for the UC Davis Strawberry Breeding Program. Read More
The Latest
tomatoes and strawberries
BerriesScientists Seek To Save Flavor Of Tomatoes And Strawber…
April 17, 2015
A $500,000 grant will enable University of Florida researchers to focus on how light can affect the quality and taste of produce after harvest. Read More
Tom West Blueberries family
BerriesUrban Sprawl Doesn’t Stop 4th-Generation Florida …
April 16, 2015
Growing in town supports the evolution of Tom West Blueberries. Read More
BerriesSouthern Strawberry, Peach Growers Concerned About Cold…
March 31, 2015
Plastic coverings, sprinklers used to keep crops warm with consecutive nights of low temperatures. Read More
BerriesBuilding A Better Black Raspberry
March 27, 2015
Studies focusing on consumer preference, aphid resistance, heat tolerance, and genetics aim to capitalize on an expanding market. Read More
Fresh From Florida Strawberry Parfait recipe
BerriesNew Partnership Sends Florida Strawberries To Puerto Ri…
March 26, 2015
Latest addition extends Sunshine State’s agricultural export reach in the Caribbean. Read More
BerriesGeorgia Blueberry Growers Suffer Chill Damage
March 23, 2015
On early varieties, some growers lost as much as half their crops. Read More
BerriesSecond Florida Strawberry Picking Challenge Packs Phila…
February 25, 2015
Fundraising event at Wish Farms in Plant City raises $76,000 for Redlands Christian Migrant Association. Read More
BerriesGrowing Greenhouse Strawberries Can Pay
February 24, 2015
British trial shows much lower disease pressure, higher quality and bigger yields. Read More
BerriesFlorida Blueberry Crop Sitting Pretty — Weather P…
February 18, 2015
Barring a hard-freeze event, growers agree the season’s offering looks fruitful. Read More
BerriesUniversity Of California Davis, California Strawberry C…
February 10, 2015
The renewed partnership includes plans to develop varieties with the addition of a new breeder for the UC Davis Strawberry Breeding Program. Read More
BerriesHow To Prepare For Strawberry Pathogens
February 5, 2015
From Botrytis in the East to Fusarium and charcoal rot in the West, strawberry growers need a plan of action to contain disease. Read More
Apples & PearsBiopesticide Use Quadrupled From 2000 To 2012
February 4, 2015
Biopesticides are on the up and up in U.S. agriculture as confirmed by recent data from EPA. “The use of Read More
Berries‘Fresh From Florida’ Produce Star Of New TV Ad Campaign
February 3, 2015
Commercials shine the spotlight on Florida blueberries, tomatoes, and seafood. Read More
BerriesDormant Pruning Tips For Your Berries
January 28, 2015
Proper dormant pruning increases berry size and improves overall health of blackberry and raspberry plants. Read More
Apples & PearsA Better Understanding Of Biocontrol
January 27, 2015
The Biocontrols 2015 Conference & Tradeshow will help growers and PCAs incorporate new tools into their crop protection programs. Read More
BerriesWhy You Should Be Growing Black Raspberries
January 27, 2015
Amazing health benefits for consumers and production and marketing benefits for the grower make this berry a must-consider option for your operation. Read More
BerriesIf You Could Plant Any Type Of Fruit, Consider A Canebe…
January 23, 2015
Raspberries or a blackberries present some berry good options. Read More
Apples & PearsSurvey: Positive Indicators For Biocontrols In U.S. Hor…
January 22, 2015
Preliminary results of a survey conducted in December 2014 of more than 850 readers across six Meister Media Worldwide titles Read More