Vector Disease Control, Inc. Mosquito Surveillance and Control Report. for the. September 2008

Transcription

1 Vector Disease Control, Inc. Mosquito Surveillance and Control Report for the City of Orange Beach September B West 36th Avenue Gulf Shores Al, T F

2 V l (' TOR D I "r \ S F CO"\! r R 0 L ] ~ ( The Cit) of Orange Beach. At Activity Report - September 2008 Vector Disease Control Inc. (VDCI) provides a proven scientific approach to mosquito control for the City of Orange Beach. VDCI's operations include larval and adult mosquito surveillance followed by the application of larvicides and adulticides. In addition, our office responds to service requests from the public. Mosquito Surveillance VDCI has utilized six (6) New Jersey light traps placed in residential and recreational areas throughout Orange Beach in September, These six traps were routinely placed twice a week during the period of September 1,2008 through September 30,2008. These traps collected an average of2.5 mosquitoes per trap (137 total mosquitoes) over the course of September. There have been a total of 13 mosquito species collected, with Aedes vexans, and Culex quinquefasciatus being the most predominant species. With an average trap count of 3.9 mosquitoes, the "Sewer Plant" trap has consistently collected the most mosquitoes. The majority of the mosquitoes were caught at the "Sewer Plant" location with the New Jersey trapping method. In addition, two (2) CDC miniature light traps, baited with CO2, were set on (4) separate trap nights from September 1st to September 30th, covering two (2) different locations. These traps yielded an average of 17.1 mosquitoes per trap night (137 total mosquitoes). The CDC miniature C02 traps are utilized in the areas where the most breeding activity is suspected, depending on climate, precipitation, and elevation. VDCI also utilized "Gravid Traps" during the month of September. The gravid traps are utilized to target the Culex species primarily, more specifically, Culex females attempting to distribute egg rafts. Culex mosquitoes are targeted by this trapping method because of there ability to readily transmit viruses such as West Nile Virus. VDCI set gravid traps on 4 separate trap nights and targeted three (3) locations. An average of 4.3 Culex mosquitoes per trap/per night was collected by way of the gravid trap method.

3 V Fer 0 R D I S f:,\ S F C 0 '\ T R 0 L I '" c The Cit~ OfOrill1!!.e Beach. AL \lig.list ~008 Arboviral Testing Data Throughout the course of September, adult Culex quinquefasciatus were collected and tested for West Nile Virus. The testing procedure was performed using the RAMP testing system at VDCI's laboratory. There were a total of thirteen (13) pools tested in which zero (0) pools were positive for the presence of West Nile Virus. Larval Control Activity Permanent water, flood water, artificial container, and drainage system sites have been inspected for larval mosquito breeding. Throughout the course of September, onehundred thirteen (113) sites where inspected within the city limits of Orange Beach, AL. A total thirty-eight (38) applications of granular BTI (AquaBac 200g) were made to mosquito breeding sites from September 1st thru September 30th. A total of 122 ounces (of Aquabac 200g) larvicide was applied during these applications. Ground adulticiding was also used in combination with the treatment of standing water to combat mosquito activity. Areas were targeted using surveillance data and feedback from the community, and proved effective in controlling adult mosquito numbers. Adult Mosquito Control Activity In response to service requests and mosquito surveillance data, VDCI will apply the adulticide Scourge 4-12 if necessary. All adulticide UL VIBarrier applications were made with A TV-mounted UL V units equipped with GPS-enabled monitors. During this report period, five (3) ATV barrier spray applications were preformed using Suspend Sc. Barrier treatments are applied with an Electrostatic Sprayer (ES) mounted to a Zephyr equipped ATV. VDCI has incorporated the use of the ES sprayer to receive the most effective and efficient knockdown of adult mosquitoes. The ES sprayer uses a power supply to electrically charge the droplets of spray, this acts much like static electricity allowing the droplets to cling uniformly to both the top, sides, and undersides of foliage, areas where adult mosquitoes rest. These resting areas are usually calm, shaded areas like eaves, carports, and shrubbery. The spray is residual, and once dry, usually gains effective control of any mosquitoes landing on it for up to three weeks. However, this control time is effected by 2

4 VECTOR DI'lE\S[ CO"-TROI [",C 'he Cit~ of Orange Reach. \L\lIgll~t 2008 weather and other environmental conditions such as sprinklers and dew. VDCI has used barrier treatments at service requests, community activities, and problem areas with great effectiveness. VDCI applied 5.5 gallons of mixed Suspend SC this reporting period. Scourge 4-12, in ready-to-use formulation, was also applied during this reporting period. VDCI applied a total of 0.5 gallons of Scourge 4-12 around the Rifle Range and Waterfront Park. These treatments, using the four wheel drive all terrain vehicle, were preformed to target remote "trouble areas" not accessible by standard vehicles. Summary During this reporting period the number of adult mosquitoes collected in the Gravid traps, remain relatively stable from the previous month, having a low average of 4.3 mosquitoes per trap. Culex numbers still remain low due to joint efforts of the City of Orange Beach and VDCI to locate urban breeding habitat and effectively place larvacides, to eliminate the ability for Culex numbers to increase. These numbers are very promising in respect to controlling virus activity. All Culex female caught in gravid traps are laboratory tested for West Nile Virus. No mosquito samples in the City of Orange Beach have tested positive for West Nile Virus. This proactive approach to mosquito control will help residents and tourists alike remain safe from mosquito borne illnesses. The joint efforts of the City of Orange Beach and VDCI to control the levels of adult mosquitoes, has proven effective in resisting and reacting to major hatch-offs due to the rainfall received in early September. A meter of this effectiveness is the lack of complaint/service request. A combination of VDCI's larviciding activities and the City's routed truck adulticiding proved effective in preventing a large number of adult mosquitoes from hatching off and feeding. The City of Orange Beach is currently still conducting adulticiding applications, Monday through Thursday. VDCI and the City of Orange Beach can adjust the time and number of applications being made per week when it is deemed necessary. The cornerstone of Integrated Pest Management (IPM), as well as conscientious environmental practice, is basing control activities on surveillance data, and only applying as much chemical as is needed to gain good mosquito control. It goes against VDCI's IPM management philosophy to apply pesticides when not necessary. If the adult mosquito populations begin to increase 3

5 \'f:ctor DI"[ \...1.: CO"-TROL I'\!c rile Cit~ of Orange Beach. \ L significantly, VDCI will increase the adult control activities in response, as seen in this past reporting period. As always, residents with any mosquito-related questions or concerns are encouraged to contact VDCI's Gulf Shores office directly. 4

6 The City of Orange Beach, Alabama NJ Light, CDC, & Gravid Trap Locations: September 2008 Trap Locations :\' 1 I t \ 'r ::--;!,_:.' NJ Pensacola. Avenue' Wolf Bay Wolf GUlfBaYRct Gravid Bay Terrace Canal Rd NJ Wolf Bay Terrace CDC Waterfront Park NJ 50~ Bayou Dr NJ Sewer Plant CDC Sportsplex Gravid West Oakridge Drive Gravid Park Trail/Rte.161 NJ Welcome Center Gulf of. Mexico Vector Disease Control, Inc. PO Box 566 DeWitt, AR These ffi3p products were developed for li5e by VDCJ lor its- inlemilt purposes orjy and v.ere not dcs.9ned or intended 'orgener3lll&e by rnl!ii'"bets of the ptbic_ VOCI mal<es no tepresentltionormrranty a5to haecurar;y. timeliness. Of COI'11p\etene:s5. ancr in particular. its awncy in Iabe~ or displirfin4 dimenslom.;onlol.n. pwper1y. bo..ntariell. orpla ment or loco>iion of any Ini10p fcat...-ltwreon. (92008 VOCI. AJriOhfS reserved.

7 Adult Mosquito Surveillance Report Start Date: 9/1/2008 End Date: 9/30/2008 Trap Location Date Trap Set Trap Type Mosquito Species Orange Beach No. Collected Zone 1 Collections Bayou (Avg. Dr 2.6) NJ 23 Light Culex 9/29/2008 9/25/ /19/2008 9/23/2008 9/17/2008 9/9/2008 9/4/2008 9/5/2008 9/8/2008 0Culex Aedes No Aedes Trap quinquefasciatus 2Mosquitoes 10 nigripalpus 2 albopictus ] 3 vexans East Cross Street sciatus llicitans rap lpus aculatus Total CulexOchlerotatus Psorophora quinquefasciatus quinquefasciatus columbiae canadensis Vector Disease Control, Inc. DeWitt. AR 72042

8 Trap Location (Avg. 2.4) 1.3) NJ Mosquito Light Ochlerotatus Culex Date Trap 9/19/ /23/2008 9/29/2008 9/17/2008 9/25/2008I 9/9/2008 9/5/2008 9/8/2008 9/4/2008 Aedes No Aedes Trap quinquefasciatus No. Trap 2 Mosquitoes 3Type I1 0I 2 1 albopictus Species vexans Collected 32 Isollidtans Set t t East Cross Street s atus Total Ochlerotatus Trap punctor Vector Disease Control, Inc. Total DeWitt, AR 72042

9 latus ans. Total.., jtrap (Avg. Location 3.9) 3.3) 1. 7) NJ Mosquito Light Culex Date Trap Culex Aedes No 9/29/2008 9/17/2008 9/19/2008 9/25/2008 9/23/2008 Aedes Trap 9/4/2008 9/5/ /8/2008 9/9/2008 quinquefasciatus No. Trap Mosquitoes 34 2 Type 1 0nigripalpus albopictus 1Species vexans Collected 2 Set 2 Culex Culex Psorophora nigripalpus pipiens Trap Trap ferox Total Total Page 3 of4 Vector Disease Control. Inc. 203 East Cross Street DeWitt. AR

10 Trap Location Date Trap Set Trap Type Mosquito Species No. Collected Overall Trap Total 137 Overall Trap Average 2.5 Page 4 of 4 Vector Disease Control. Inc. 203 East Cross Street DeWitt, AR

11 Adult Mosquito Surveillance Summary lorange Beach I 25 Summary of Graph Data: Municipality: Zone: Mosquito Species: edes albopictus -~ OJ Z a. ~ I- & Q) OJ ~ Q) > <{ 20 rap Type: 15 j' IN] Light Trap 10 IAedes Aedes cinereus vexans nopheles crucians nopheles earlei nopheles punctipennis nopheles quadrimaculatus Culex pipiens Iculex Culex nigripalpus quinquefasciatus Culex restuans,culex salinarius ICuliseta melanura 5 o ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~ T~D~ Vector Disease Control, Inc. 203 East Cross Street DeWitt, AR

12 Adult Mosquito Surveillance Report Start Date: 9/1/2008 End Date: 9/30/2008 Trap Location Date Trap Set Trap Type Mosquito Species Orange Beach No. Collected itans iae ulatus stotal Zone 1 Collections.) Sportsplex (Avg. 19.5) CDC 78 Light 9/17/ /23/2008 9/9/20081 Aedes 9/4/2008 Aedes Trap albopictus vexans East Cross Street Culex quinquefasciatus Vector Disease Control, Inc. " DeWitt, AR 72042

13 Trap Location Date Trap Set CulexOverall quinquefasciatus Trap Average Trap Total CDC Light Waterfront Trap Park 9/23/2008 Overall Trap Total (Avg 14.8) 59 Trap Type Mosquito 137 Aedes No Species Collected 6vexans Page 2 of 2 Vector Disease Control. Inc. 203 East Cross Street DeWitt, AR

14 Adult Mosquito Surveillance Summary lorange Beach.s:: Z Q. ~ > «Ol ~Q) Q) ~I ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~ij~~~~~~~~~~~~~~~~~ fupd~ Vector Disease Control, Inc. 203 East Cross Street DeWitt, AR

15 Adult Mosquito Surveillance Report Start Date: 9/1/2008 End Date: 9/30/2008 Trap Location Date Trap Set Trap Type Zone 1 Collections Park TraillRte. (Avg. 4.7) 4.2) 3) 161 Gravid Culex Aedes Trap 9/23/2008 9/19/2008 9/4/2008 9/8/ quinquefasciatus albopictus age otal Mosquito Species Orange Beach No. Collected Page 1 of 1 Vector Disease Controt Inc. 203 East Cross Street DeWitt. AR

16 Arboviral Surveillance Results Start Date: 9/1/2008 End Date: 9/ Orange Beach Trap Location Trap Date Trap Type Date Tested Pool No. Mosquito Species Pool Size Results Assay...,.- Sportsp1ex Waterfront Park 9/4/2008 CDC Light Trap CDC Light Trap 9/5/ Culex quinquefasciatus 6 Negative RAMP Total Positive: Park TraiURte. 161 Gravid Trap Total Negative: 13 West Oakridge Dr Gravid Trap 9/8/2008 Gravid Trap 9/12/2008 Park TrailJRte. 161 Gravid Trap Sportsp1ex 9/9/2008 9/17/2008 CDC Light Trap CDC Light Trap 9/19/2008 Park TraiI/Rte /19/2008 Gravid Trap Sportsplex 9/23/2008 CDC Light Trap 9/26/2008 Wo1fBay Terrace Gravid Trap Park Trai1/Rte. 161 Gravid Trap Waterfront Park CDC Light Trap Total Pools Tested: 13 Total Mosquitoes Tested: 71 Vector Disease Control. Inc. 203 East Cross Street DeWitt, AR Page 1 of

17 Larvicide Applications Start Date: 9/1/2008 End Date: 9/30/2008 Orange Beach Date Location Habitat No. of Larvae Larvicide Amount Applied (oz.) Zone 1 Applications 9/2/2008 Aquabac Armadillo OulfBayRdDitch Roadside Bear Wooded Bayou 1-10Ditches 2000 ]-10] ]-] Wetland Ditch/Basins Point Wooded ] Ditch ].00 Dr Ditches Ave Pool Pools East Cross Street DeWitt. AR Vector Disease Controt Inc.

18 Larvicide Aquabac Rte. Commercial Waterfront Location Ditch/Wooded 161/Beech Ditches/Wooded 1-10Ditch Bay Pelican Maple Cove 200G Oak Backyard oadside Habitat St Amount Applied Larvae Circle Basin Runoff Culvert/Art. St Dr PI Park Ave Homes Pools PoollDitch Ditches Pools ( ) ]22.00 (oz.) sinapplied Zone 1: Total Ounces Applied: No. of Page 2 of2 Vector Disease Control. Inc. 203 East Cross Street DeWitt. AR

19 The City of Orange Beach, Alabama larvicide locations: September 2008 Larvicide Locations -r - /',lid -t ~ \!:f() /~/~ Vector Disease Control, Inc. PO Box 566 DeWitt. AR The$e map prod",,*- were dovclopod for uoo by VOCI for il$ inleltl3l ~ oniy;lnd """ro not dmigmd N irteoc:led lor general use by merrtlers 01 the plbk VDCI makes I1Qrepresentation or warranty asta lsaccuracy. =~~~:':: =~:~:a~cy~~~.~~~nc~~~~~~ pr

20 Larval Surveillance Data Start Date: 9/1/2008 End Date: 9/30/2008 No Larvicided Yes ID'd LocationHabitat Cotton Baldwin 1] No. Bayou ] Wooded Bayou WetIandlDitch Ditches/Basins 0 Dr Ave Wetland Dipped SpeciesMosquito Pool Pool -- Backyard Wooded Pools Ditch East Cross Street /2008Vector Disease Control, Inc. DeWitt. AR Orange Beach

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22 No Larvicided Yes ID'dHarbor LocationHabitat Clerry's No. Lauder 0 Ditch/Wooded 0 Runoff Culvert! Backyard MarinePond oadside Wetland 1-10 Ln Rd Dipped Species Mosquito 0Retention Basins/Ditches Wooded Culverts Art. Pools Pools Container Ponds Pool East Cross Street.~---- isease Control, Inc. DeWitt, AR No.

23 NoPublic Larvicided YesEast Wolf ID'd LocationHabitat Beech 1-10 No. Bay 0 Beach 0Bay Works 1] 1-10 DitchlBasin 0 DitchIWooded Circle 0-50 Homes Terrace Wetland 0 Roadside Ditches Dipped Species Mosquito 0Blvd Yard PoollDitches Pools Pool/Ditch Pools East Cross Street Vector Disease Contro/, Inc. DeWitt. AR No.

24 Larvicided No Wolf ID'd LocationHabitat No. 0Bayou 0 0Backyard 0 Runoff Salt Terrace Wetland Backyard Dr Dipped Species Mosquito Ditch Marsh Ditch Basins Ditches Total Sites Inspected in Zone 1: 113 No. Page 5 of 5 Vector Disease Control. Inc. 203 East Cross Street DeWitt, AR

25 Ground Adulticide Applications Start Date: 9/1/2008 End Date: 9/30/2008 Orange Beach Month Date Municipality Chemical Mix Ratio Trip Miles Spray Miles Spray Acres Gallons Sprayed Zone 1 Adulticide Applications Rifle 1.0Waterfront /23/2008 9/9/2008 Scourge Park Neat 4-12 ( ) 0.5 September 2008 Sportsplex 0.0 Range Park Barrier Suspend Barrier 1:3 SC SC ( ) 5.5 Page 1 of 1 Vector Disease Control, Inc. 203 East Cross Street DeWitt, AR

26 ~\t Orange Beach The City of Orange Beach, Alabama Barrier Adulticide Application September 9, 2008 Date: Sprayer On Chemical: Suspend SC Quantity Used: 3.0 gal (mixed) Miles Treated: 1.38 Acres Treated: 8.48 The&e map produr;t, were developed lor L/$O by VOCI for ii'i nemal purposes ony and wefe 001 designed or inlended for general =:::=.=~==~~ ~~~:~~s.~operty U$e by ~ of Iho pl.tlic. VOCI makm representation Of warranly as 10 its accurncy, no

27 ~\l Orange Beach The City of Orange Beach, Alabama Barrier Adulticide Application Sprayer September 23, 2008 On Chemical: Suspend SC Quantity Used: 0.50 gal (mixed) Miles Treated: 0.27 Acres Treated: 1.64 Date: 1, ' rs /. " W-t+b-,c. Ar:;~ f I, PO Vector DeWitt. Box 566 Disease AR Control. Inc.