Uncategorized – Spotted Wing Drosophila

Update – Continued trap captures and increasing populations

Anna Elizabeth WallisJune 21, 2024June 21, 2024Leave a comment

Spotted wing drosophila (SWD) trap captures continue to be reported in many locations throughout NY state over the past few weeks. In many places, trap counts continue to be low. In some locations populations have escalated quickly.

First captures were reported:

The week of 5/27 in Albany, Dutchess and Suffolk Counties.
The week of 6/3 in Clinton, Columbia, Schuyler, Washington, and Ontario Counties.
The week of 6/10 in Delaware, Essex, Niagara, Tioga, Tompkins, Wayne
The week of 6/17 in Chenango

As mentioned our first update for 2024 summarizing SWD monitoring, first captures are somewhat earlier than has been reported in the past. This is especially true compared to last season (2023), in which first trap captures for many locations were recorded nearly two weeks later than average. This highlights the need for site and season specific monitoring efforts to initiate management programs at the appropriate time.

Cumulative SWD Trap Captures at Monitoring Locations in NY State

Cumulative spotted wing drosophila (SWD) trap captures at monitoring locations across the state. The red circles indicate number of insects captured, with diameter corresponding to overall number of captures this season. Grey circles indicate not SWD trap captures at a particular location.

Under the correct conditions, populations of SWD can increase rapidly. First and sustained trap capture has been reported in the majority of monitoring locations at this time, although in some locations SWD has not yet been detected in traps. In most places, numbers are low and slowly increasing. But in some locations populations have increased dramatically. In other locations, populations have declined, likely suppressed by insecticide applications. The following graph shows at sites across NY State from the week of May 27 to June 17, showing increase in the overall number of insects captured per site.

Spotted Wing Drosophila (SWD) trap captures from the week of May 27 to June 17. First and sustained trap capture has been reported in the majority of monitoring locations. In many places, numbers are low and slowly increasing. But in some locations populations have increased dramatically. In other locations, populations have declined, likely suppressed by insecticide applications.

Weekly trap captures by locations

Location	Week of 5/27	Week of 6/3	Week of 6/10	Week of 6/17
Albany1	10	9	5
Chenango1			0	1
Clinton1		4	5
Columbia2	0	9	5	16
Delaware1			23
Essex3		0	6	6
Dutchess6	2	21	77	452
Columbia3	0	2	9	57
LO1 - Niagara4	0	0	2	5
LO2 - Orleans2	0	0	1	0
Monroe1			0	0
Niagara6			0	0
Orleans4	0	0	0	0
Schuyler6	0	3	12
Suffolk1	4	3	95	11
Suffolk2			13	45
Tioga4		0	8	12
Tompkins4	0	0	1	2
Washington1		2	3	9
Washington2		2	9	18
Wayne11	0	0	1	0
Wayne13	0	0	0	2
WNY Geneva - Ontario6		5	15
Tioga5				7
Tioga10				9
Tioga6				3
Tioga7				5
Tioga8				6
Tioga9				10

Thank you to all of our collaborators for servicing SWD traps across the state!

Update – Increased Trap Captures Across NY State

Anna Elizabeth WallisJune 17, 2024Leave a comment

Spotted wing drosophila (SWD) first and sustained trap captures continue to be reported in many locations throughout NY state over the past three weeks.

First captures were reported

The week of 5/27 in Albany, Dutchess and Suffolk Counties.
The week of 6/3 in Clinton, Columbia, Schuyler, Washington, and Ontario Counties.
The week of 6/10 in Delaware, Essex, Niagara, Tioga, Tompkins, Wayne

Under the correct conditions, populations of SWD can increase rapidly. This season, in most locations only low trap captures have been reported. But in a few locations, trap captures have already increase dramatically, particularly in places where first trap capture was reported earlier (at the end of May). The following graph shows at sites across NY State from the week of May 27 to June 10, showing increase in the overall number of insects captured per site.

Line graph showing three weeks of SWD trap captures, line increasing steeply in two sites, slowly in others. — Spotted wing drosophila trap captures from the week of May 27 to June 10, showing increase in the overall number of insects captured per site.

Weekly trap captures by locations

Location	Week of 5/27	Week of 6/3	Week of 6/10
Albany1	10	9	5
Chenango1			0
Clinton1		4
Columbia2	0	9	5
Delaware1			23
Essex3		0	6
HV Fishkill - Dutchess6	2	21	77
HV Red Hook - Columbia3	0	2	9
LO1 - Niagara4	0	0	2
LO2 - Orleans2	0	0	1
Monroe1			0
Niagara6			0
Orleans4	0	0	0
Schuyler6	0	3	12
Suffolk1	4	3	95
Suffolk2			13
Tioga4		0	8
Tompkins4	0	0	1
Washington1		1
Washington2		2
Wayne11	0	0	1
Wayne13	0	0	0
WNY Geneva - Ontario6		5	15

Thank you to all of our collaborators for servicing SWD traps across the state!

First Trap Capture – Niagara County

Anna Elizabeth WallisJune 12, 2024Leave a comment

First trap capture was reported in Niagara County on Tuesday June 11, 2 females were identified in a jar trap.

Thank you to Liz Tee for servicing these traps.

~ This is a friendly reminder to subscribe to the NEW Berry Pest Monitoring Network Blog! We are transitioning to the new blog this year and will cross-post for the 2024 season. https://blogs.cornell.edu/berrypests/ ~

First Trap Capture – Orleans County

Anna Elizabeth WallisJune 12, 2024June 12, 2024Leave a comment

First trap capture was reported for Orleans County on Tuesday June 11, one male was identified on a red sticky card.

Thank you to Janet van Zoeren for servicing these traps.

First Trap Capture – Essex County

Anna Elizabeth WallisJune 12, 2024Leave a comment

First trap capture for Essex County was reported on Monday June 10, 2 males and 2 females were identified in a jar trap, and 2 males were identified on a red sticky card trap.

Thank you to Jenn Stanton for checking these traps!

First Trap Capture – Wayne County

Anna Elizabeth WallisJune 10, 2024Leave a comment

First Trap Capture was reported today in Wayne County, 1 male.

Thank you to Janet van Zoeren for servicing these traps.

First Trap Capture – Delaware County

Anna Elizabeth WallisJune 10, 2024Leave a comment

First Trap capture was reported today for Delaware county. 23 males were identified across 9 sticky traps in blueberries.

Thank you to Jonny Williams for servicing these traps!

First Trap Capture – Tompkins County

Anna Elizabeth WallisJune 10, 2024Leave a comment

First trap capture was reported today in Tompkins County, 1 male was identified on a sticky card near 'Prelude' raspberries just starting to produce ripe fruit.

Thank you to Anya Osatuke for servicing these traps!

SWD Update – First trap captures reported in many locations across NY State 1

Anna Elizabeth WallisJune 7, 20241 Comment

Spotted wing drosophila (SWD) first trap captures have been reported in many locations throughout NY state over the past two weeks. First captures were reported the week of 6/3 in Albany, Dutchess and Suffolk Counties. And first captures were reported the week of 6/7 in Clinton, Columbia, Schuyler, Washington, and Ontario Counties.

Continue reading on the Berry Pest Monitoring Network Blog here.

First Trap Capture – Ontario County

Anna Elizabeth WallisJune 7, 2024Leave a comment

First trap capture for Ontario County was reported today, 5 males on red sticky card traps.

Thank you to Marcus Lopez and Henry Zelenak for servicing these traps!