J O D I S C O TT, M SE D U C AT I O N A N D P U B L I C R E L AT I O N S

A N A S TA S I A M O S Q U I T O C O N T R O L D I S T R I C TS T. A U G U S T I N E , F L

The Buzz About

Mosquito Control

The Good, The Bad and The Funny Looking

Good: Male Mosquitoes Food SourceBad:Female MosquitoesCan Vector Pathogens:

WNVMalariaDengueEEEDog Heart Worm

Funny Looking:Larvae

Mosquitoes VS. Bees

• Size: • Very small

• Habitats:• Larvae found in water• Adults found foraging

around people and plants

• Activity time: • Night• Most 1-2 hours after sunset

or sun rise

• Areas of activity:• Around water and

people/animals

• Size: • 10 to 20 times bigger

• Habitats:• Larvae found in hive• Adults found foraging from

flowers

• Activity time: • Day

• Areas of activity:• Around plants and

vegetative flowers

Integrated Mosquito Management (IMM)

• Larviciding

• Adulticiding

• Education• Source Reduction

IMM

Source Reduction Education

Larviciding Adulticiding

IMM

Control Methods:

Larval

Applying Bti:

Bacteria/ Stomach poison

Source Reduction:

Drain & Washout

Control Methods:

AdultsPhysical & Mechanical:

Screen doors & windows

Sticky Traps

Attractive Traps

Personal Protection:

Clothing & Repellents

Chemical Control:

Permethrin

Sumithrin for Ground

Dibrom for Air

Can The Pesticides Used For Mosquito Control Kill Honey Bees?

Yes If directly applied to honey bees And in the case of overdoses

Does Mosquito Control Kill Honey Bees?

Why?

No!

M O S Q U I T O C O N T R O L L AW ( C H A P T E R 3 8 8 ) & D A C ’ S C O D E ( % E -

1 3 ) :

U LV A P P L I C AT I O N O F P E S T I C I D E F O R A D U LT M O S Q U I T O E S H A S

T O B E J U S T I F I E D B A S E D O N:

V I R A L C A S E S O F: H U M A N S O R A N I M A L S

P O S I T I V E V I R A L C A S E S O F S E N T I N E L A N I M A L S &

M O S Q U I T O E S

H I G H N U M B E R S D U R I N G L A N D I N G R AT E C O U N T S A N D

C O L L E C T I O N S O F M O S Q U I T O E S I N A R E A S ( > 2 5 M O S Q U I T O E S )

S P E C I A L C O N D I T I O N S : F L O O D, H U R R I C A N E S A N D V I R A L

O U T B R E A K S

AMCD’S Adult Mosquito Control Operation:

GROUND ULV SPRAYING OF: PERMETHRIN

NO SMELLEFFECTIVE

0.0017 OZ PER ACREAERIAL SPRAYING FOR HOT SPOTS & EMERGENCY

SPRAYING:DIBROM

0.5-0 .6 OZ PER ACREBASED ON WEATHER, DISEASE OUTBREAK & NEED FOR IT

*WE HAVE A NO FLY LIST AND DO NOT SPRAY CONSERVATION LANDS & FEDERAL/STATE PARKS

WITHOUT DISEASE

AMCD’S Adult Mosquito Control Operation:

ASSESSMENTS OF THE IMPACT OF AERIAL ULV

APPLICATIONS OF DIBROM ON HONEY BEES IN MANATEE

COUNTY(1999-2000)

Research: Dr. Harry Zhong, FAMU

Research Location & Hive Set-Up

• Location: Palmetto, Manatee County, Florida

• Two Treatment Sites: Terra Ceira Rd & Port Manatee

• One Control Site: Manatee Fruit at Cortez Rd

• 16 Bee Hives (in a cluster of 4) were set up at each site

• 8 Hives in open and 8 hives in forest area at Terra Ceira Rd

Sample Collection

• Dibrom Residue• Yarn Samples

• Naled Concentration In Air• Filter Paper Samples

• Naled Ground Deposition

• Bee Mortality• Dead Bee Trap• Screen 1/8 Inch Hardware Cloth

With Surface Area 0.19m2 & Height 25cm

• *Dead bees collected before and after aerial ULV application

Dead bees found in a screened dead bee collector

Zhong -- AMCD 2008-2

09/11/2008

Comparison of Pre- and Post-spray Honeybee Mortality Collected by Traps in front of Bee Hives following Operational Aerial ULV Sprays of Naled via High-presure Hydraulic Nozzle

System by Manatee County MCD (September 25, 2000)

0

20

40

60

80

100

120

140

160

1 - Forest 1 - Open 2 - Open 2 _ Open 3 - Control 1 - Forest 1 - Open 2 - Open 2 _ Open 3 - Control

Pre-spray Site Post-spray

Zhong -- AMCD 2008-209/11/2008

Honey Production (1999 & 2000)

• 1999 2000 %INCREASE

• Site 1• Open 52.5 ± 23.7 lbs 73.4 ± 45.8 lbs

40%• Forest 46.8 ± 35.0 lbs 98.3 ± 49.9 Ibs

110%• Site 2 • Open 71.2 ± 24.7 lbs 107.6 ± 28.7 lbs 51%

• Site 3 (Control Site)• Open 88.6 ± 38.4 lbs 114.8 ± 38.3 lbs 30%

Zhong -- AMCD 2008-2

09/11/2008

Dibrom Residue Impact on Honeybees

Zhong -- AMCD 2008-2

09/11/2008

• Bee Mortality was correlated with Naled residue

ground deposition

• Filter Paper Data

• When Nale residue was less than 1500 μg/m2 , bee

mortality was not significantly different between

treated and control groups

• Honey Production was not significantly different

between spray and control sites

Mosquito Control District

Bee Keepers

Reduce Naled residue deposits near hives Inform Bee Keepers

when spraying will occur

Continue implementing IMM practices

Reduce number of honeybees resting in front of hive during the night Orient the hive entrance

direction to downwind to reduce the exposure

Place hive in vegetated area- trees or tall grass- low bee mortality

Minimize Honey Bee Mortality

Florida Bee Kill Investigation Report

9 Separate bee keepers in 7 counties reported kills between

September & November 2011

Investigation by DACS/DPI

Initial report by bee keepers implicated mosquito control activities

Collected samples from affected bee keepers

Inspected pesticide use: mosquito & agricultural operations

Collected dead bees, combs & honey, swabbed samples from hive

exteriors and materials found in the hives being used for control of

bee pests

Florida Bee Kill Investigation Report

Fipronil in sugar syrup used to feed colonies

most likely explanation of the bee kills

experienced in Brevard County

As the colonies that were exposed to this

material declined, foragers from neighboring

hives robbed the fipronil-tainted syrup or the

honey made from the syrup and experienced

bee deaths as well

Florida Bee Kill Investigation Report

Fipronil in sugar water has been used to eradicate

feral bee colonies in New Zealand

Bee kills outside of the Brevard /Indian River

County area have not been linked to any intentional

poisoning or pesticide misuse.

Misuse of amitraz for varron mite control, and

fipronil containing traps for hive beetle control was

observed at a number of locations.

Bee Deaths in St. Johns CountyMay 2011

• Bee keeper f rom SR 16 compla ined that mosqui to

contro l spray by a i rp lane k i l led many o f h is bees

• DACS d id invest igat ion f rom Apr i l to May

• No mosqui to spray in St . Johns in Apr i l and May by

aer ia l

• Bee keeper saw Jacksonv i l le Mosqui to Contro l

a i rp lane fl y by h is area .

• Flight was a test run, no chemicals dispensed

• The case was d ismissed in la te May

THANK YOU FOR YOUR TIME!

Contact Information:

AMCD

500 Old Beach Rd

St. Augustine, FL 32080

904-471-3107

www.amcdsjc.org