NFMAD Surveillance Trap Data 2018

Trapping numbers for 2018 season

Mosquito Trapping Overview:  2018

January 2018:  An overview of the NFMAD trapping program is below.  Trapping will commence in mid to late May, depending on weather, in 2018.

2017 Trap Tables Archive

NFMAD Surveillance Program

NFMAD conducts adult mosquito surveillance with CDC light traps, set throughout our District. There are 18 sentinel traps set approximately one night per week in perimeters around the towns of Hotchkiss and Paonia/Bowie, and in the regions between the towns. Other trap sites are added when an increased level of information is needed around event/recreational/park areas, and/or an uptick in adult mosquito numbers is observed in a sentinel trap site. The additional traps aid the pinpointing of the breeding site(s), and help to direct the direction of the search, in quarter-mile increments. NFMAD also has temporary trap sites that are set in response to a resident complaint or request.

The CDC light traps collect adult mosquitoes for at least 12 hours and attract mosquitoes by emitting carbon dioxide and using artificial light, essentially the same attractants for human beings! This is one of the reasons that events with large groups of people tend to be adult mosquito magnets since the levels of carbon dioxide increase markedly from human exhalation, and added lights in parks or yards become huge mosquito traps.

NFMAD uses the trap data in several ways, including directing the crew in the continuing search for breeding sites, monitoring larval and pupal treatments that have been applied, RAMP testing for the presence of mosquitoes carrying West Nile virus, as well as before and after application of adulticide to monitor effects. Events in the North Fork district are trapped in a tighter perimeter beginning at least 3 weeks in advance, with aggressive treatment using larval, pupal, and barrier products. If indicated, adulticide will be sprayed before an event occurs.

The adult mosquitoes that are captured in our light traps are frozen and identified to species. Species numbers are tallied and monitored for peaks and dips in the mosquito population. A trap that suddenly has a high number of mosquitoes indicates there is a water source nearby that is breeding mosquitoes, and the crew increases the search for the breeding site in a larger circumference. Since each species of mosquito has breeding site preferences, each type of terrain is monitored. Occasionally, adult mosquitoes are blown into the District by wind, particularly along the western boundary of Hotchkiss.

Culex species mosquitoes are tested for West Nile virus using the Rapid Analyte Measurement Reader, commonly known as RAMP. NFMAD purchased the RAMP equipment in the winter of 2013, with funds generously donated by the towns of Hotchkiss and Paonia, a private grant from Planet Heritage Foundation, as well as private donations from residents and an anonymous donor.

The RAMP reader allows the District to test trapped pools of mosquitoes for West Nile within 24 hours of collection, rather than the previous testing using Polymerase Chain Reaction (PCR) in Denver, which required 8-15 days to turnaround the information and is highly expensive. The RAMP purchase became even more important as federal funding for PCR testing was decreased to the states by over 90% in March of 2013, and further in 2014, essentially almost totally eliminating the Delta County Public Health department’s budget for testing trap pools for NFMAD and Delta District #1. The Public Health office will confirm RAMP test results with PCR testing if requested over the season, but cannot stretch the budget to weekly trap pools.

Given that culex mosquitoes potentially carrying W. Nile virus can go from egg to flying adult in less than 4 days, the RAMP reader has given NFMAD the ability to direct and redirect treatment in an efficient manner. In the 2014 season, as a direct result of the leasing of an office space for the lab, NFMAD turnaround on a trapped pool of mosquitoes has literally decreased to 4-6 hours!

With less than 10 mosquitoes trapped in an area that has less population, the mosquitoes may not be noticeable from your front porch, but the NFMAD crew is searching for the breeding site within a quarter of a mile of the trap area. Between 10 and 25 trapped, people close to the area or in town will be swatting mosquitoes, and the search widens to half a mile. When there are 25 or more, the crew widens the search area to one mile to locate unknown breeding sites, and aggressively steps up the larval and pupal products being applied. If any mosquitoes test positive on RAMP reader, adulticide will be used if appropriate.

June 2017

Trapping is beginning in the NF District areas this week, depending on weather.  High winds and rain, coupled with low nightly temperatures has delayed the onset of trapping until the second week of June.

 

HOTCHKISS AREA TRAPS

Trap #1 Zack's BBQ areaAedesCulexOther Total RAMPNOTES
6/5/20181113N/A
6/11/1814510neg
6/18/18917632<10
Additional 6/18 trap97016neg
6/24/182141025<10
7/1/1805813neg
7/15/18502355neg
7/22/1875384415711.8
7/29/1826364110327.8 Neg
8/6/180426neg
8/13/183925872Cluster 640 +
8/20/1854171182<10
8/27/181392810171640 +Culex Pipiens dominated for the first time in years
9/3/1852231994<10
Trap # 2: Fairgrounds PrimaryAedesCulexOther SpeciesTotal RAMPNOTES
6/5/184137neg
6/11/180101N/A
6/18/1875618neg
6/18/18, second trap425965neg
6/24/181001N/A
6/24/18, second trap0011N/A
7/1/180303neg
7/1/18, second trap01221419.7 combo test
7/8/17, rained out
7/15/18412117<10.0
7/22/18191823911.8, combo test
7/29/1818562498Cluster 27.8
8/6/181045N/A
8/13/181211225Cluster: 640
8/20/18202426N/A
8/27/186039N/A
9/3/1874718neg
Trap #3 Lorah Lane areaAedesCulexOther SpeciesTotal RAMPNOTES
6/8/18426434<10.0
6/11/18125329<10.0
6/18/18511521<10.0
6/24/18418224<10.0
7/1/1844375419.7, combo test
7/8/18, rained out
7/22/181824115311.8, combo test
7/29/18373839114Cluster: 27.8
8/6/18019120Cluster: 152.4
8/13/182117441Cluster 640 +
8/20/182713343<10
8/27/183516657<10
9/3/18243734neg
Trap #4 Shifflet/Willow Hts area
Non-Sentinel, as needed
AedesCulexOtherTotal RAMPNOTES
6/8/1809110neg
6/11/180909neg
6/18/18116219<10.0
6/24/1819010neg
7/1/18019221640, combo test
7/15/180202neg
7/22/1800000trap failure??
7/29/182322256640+
8/6/18291122152.2
8/13/18216422cluster: 640
8/20/18411217neg
8/27/1837313<10
9/3/180303neg
Trap #5 West Hotchkiss (BK)AedesCulexOther SpeciesTotal RAMPNOTES
6/8/180235neg
6/11/182114neg
6/18/18111214neg
6/24/1805510neg
7/1/180235640, combo test
7/15/18150116N/A
7/22/1817171650<10.0
7/29/181511136162Cluster <10
8/6/182551444neg
8/13/18441249105Cluster 640
8/20/18991129Neg
8/27/18802937N/A
9/3/18951428neg
Trap # 6 **Non-Sentinel
Old Water Treatment Plant area
AedesCulexOther SpeciesTotalRAMPNOTES
6/5/18593365neg
6/11/18528666neg
6/18/18231125neg
6/24/183615253<10.0
7/1/1879016640. combo test
7/15/181710532<10.0
7/22/1884317122<10.0, combo test
7/29
Trap failure
8/6/18292031neg
8/13/18460854N/A
8/20/18950398n/a
8/27/18561158neg
9/3/1812545134<10
**Occasional by Request or for upcoming EventsAedesCulexOtherTotalRAMPNOTES
PAONIA AREA TRAPS
Trap # 7: Bell Creek Rd. areaAedesCulexOther SpeciesTotalRAMPNOTES
6/5/18201921N/A
6/12/18115925neg
6/17/18122418neg
6/25/1897319neg
7/2/1811601714.4, combo test
7/16/186711438.1, combo test
7/23/181001N/A
7/30/181885425267Cluster 640 +
8/5/181119822240Cluster 24.5
8/12/1857519117Cluster 640
individual: 17.8
8/19/18558871neg
8/26/1898144116<10
9/3/1862448114<10
Trap #8 Pond Z areaAedesCulexOther SpeciesTotal RAMPNOTES
6/5/18122427<10.0
6/12/18114419neg
6/17/18211215neg
6/24/180000N/Atrap failure?
6/25/18, re-trap028129<10.0
7/2/1801501514.4, combo test
7/16/18282535neg
7/23/186056N/A
7/30/18760269cluster 640 +
8/5/1828675100Cluster: 24.5
8/12/18887498Cluster 640 +
8/19/18332237640 +
8/26/18221225neg
9/3/1827501087<10
Trap # 9 Skyhill Pond area
Non-sentinel, as needed
AedesCulexOther SpeciesTotalRAMPNOTES
June 2017
Trap #10 German Creek, GZ areas
Non-sentinel
AedesCulexOther SpeciesTotalRAMPNOTES
6/5/181203neg
6/12/180516neg
6/17/180202neg
6/25/181438neg
7/2/182406neg
7/16/18328132<10.0
7/23/181001N/A
7/30/18012012Cluster 75.3
8/5/18225330Cluster <10
8/12/18026228Cluster 640 +
8/19/18117018<10
8/26/1837010neg
9/3/184217neg
Trap # 11 Hadley Rd area
Non-sentinel, as needed
AedesCulexOther SpeciesTotal RAMPNOTES
6/5/1861310neg
6/12/184037N/A
6/17/1882515neg
6/25/185591680neg
7/2/185146685neg
7/16/18661022neg
7/23/18230537<10.0
7/30/18420731Cluster 75.3
8/5/18531743cluster <10
8/12/18222124Cluster 640 +
8/19/18322025<10
8/26/183407neg
9/3/1856314neg
Trap #12 R-25 Rd.
Non-sentinel
AedesCulexOther SpeciesTotalRAMPNOTES
6/5/187119neg
6/12/18trap failure?0
6/17/180112neg
6/25/1800
7/2/1885114neg
7/10/18402345neg
7/23/182520449<10.0
7/30/1847314<10
8/5/18511016<10
8/12/183609neg
8/19/181102neg
8/26/182002N/A
9/3/181214neg
Trap # 13 Campbell Rd. AedesCulexOther Species TotalRAMPNOTES
6/5/180257neg
6/11/180314neg
6/18/1808513neg
6/24/180235neg
7/1/1801662217.9, combo test
7/15/18521531640, combo test
7/22/1822182161640, combo test
7/29/187151436Cluster <10
8/26/184141634Cluster <10
8/13/181121932Cluster 640 +
8/20/181203neg
8/27/1889724neg
9/3/182518<10
Trap # 14 Pumpkin Hollow Rd. AedesCulexOther SpeciesTotalRAMPNOTES
6/5/1898813119neg
6/11/183610349neg
6/18/18292435neg
6/24/18546262neg
7/1/189955315717.9, combo test
7/15/1870121193640, combo test
7/22/18104456155640, combo test
7/29/1894467147cluster <10
8/6/18160126178Cluster <10
8/13/18185205210cluster 640 +
8/20/1899173119neg
8/27/189672105neg
9/3/18171119neg
Trap # 15
Paonia Water Tx, East Pumpkin Hollow areas
Aedes CulexOther SpeciesTotalRAMPNOTES
6/5/180134neg
6/11/18522330<10.0
6/18/1819010neg
6/24/180718neg
7/1/1831732317.9, combo
7/15/1825842713660.2, combo test 640
7/22/1823331268<10.0
7/29/1845537105640 +
8/6/182728560Cluster <10
8/13/183954102Cluster 640 +
8/20/18849187515.8
8/27/18237636neg
9/3/18019322<10
Trap #16 Volunteer Park AedesCulexOther SpeciesTotalRAMPNOTES
6/5/183025N/A
6/12/1875113neg
6/17/18421043neg
6/25/18123015neg
7/2/18411486314.4, combo test
7/16/1810932915038.1, combo test
7/23/18trap failure
7/30/1872365113<10.0
8/5/182874712346Cluster 640 +
8/12/187424717806Cluster 640 +
8/19/18270343308<10
8/26/1823790246neg
9/3/1810048112neg
Trap # 17 Lund Rd areaAedesCulexOther SpeciesTotalRAMPNOTES
6/5/18647576neg
6/12/1882921112neg
6/17/18314410328neg
6/25/182631529297neg
7/2/18421255914.4, combo test
7/16/181991341735038.1, combo test
7/23/18515626<10.0
7/30/181905113254 Cluster 640 +
8/5/1843912216577Cluster 640 +
8/12/186012416200cluster 640 +
8/19/18829510187<10
8/26/1855271597<10
9/3/1838341890<10
Trap #18, #19, #20: By Request or Need onlyAedesCulexOther SpeciesTotalRAMPNOTES
June
July
August
September
**Non-Sentinel by request or event AedesCulexOther SpeciesTotalRAMPNOTES