rice field environment using a BG-Counter Presented by : Mario - - PowerPoint PPT Presentation

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rice field environment using a bg counter
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rice field environment using a BG-Counter Presented by : Mario - - PowerPoint PPT Presentation

Dec 02, 2022 309 likes •616 views

Study of the behavior of Culex tarsalis in a rice field environment using a BG-Counter Presented by : Mario Boisvert, PhD Placer Mosquito & Vector Control District Roseville, CA AMCA Orlando, FL March 1 st 2019 OBJECTIVES Document

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Study of the behavior of Culex tarsalis in a rice field environment using a BG-Counter

Presented by :

Mario Boisvert, PhD

Placer Mosquito & Vector Control District Roseville, CA

AMCA

Orlando, FL March 1st 2019

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OBJECTIVES

  • Document peak(s) of activity of Culex tarsalis using

BG-Counters

  • Compare data collected over 2 years at the Locust Rd site
  • Analyze data from five sites with different environments
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Integrated printed circuit board which incorporates :

  • An infrared sensor
  • Environmental sensors for temperature, RH and ambient light
  • A SD card for onboard data storage, a fan and a CO2 valve

control

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5 sites

  • 3 sites mainly surrounded by rice fields

(Locust, Philip and Pinto)

  • 1 site mainly surrounded by corn (Amoruso)
  • 1 site is the Sierra Pacific Industries (Log decks)

(logs transformed into lumbers for framing and fencing)

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Locust Rd – 2-year comparison

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Locust 2017 Locust 2018 Placer Sutter Placer Sutter

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  • The abundance of mosquitoes can vary greatly per site
  • Location of the site
  • Larvicide treatments
  • Productivity of the surrounding sites (food, water temperature, etc.)
  • Movement of mosquito populations
  • Temperature, relative humidity (to be determined)
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Sometimes less than 10% of the total activity

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Locust : total of 86 days of data 36 days (42%) : more activity after midnight

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Peaks of activity

  • Linear regression was used to determine if the time of the first peak

(minutes after sunset) changed over the summer within a same site

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Culex pipiens 86 72 60 86 68 74

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Log Decks

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  • Locust showed similar data (patterns, peaks) over the 2-year trial
  • The abundance of mosquitoes can vary greatly per site
  • Within a same site, the time of the first peak (minutes after sunset)

can change over the summer

Conclusion

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  • The time of the first peak of activity can vary from different sites
  • Can we expect similar results with the other sites over a 2-year trial?

Conclusion

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  • Can get a lot of information on mosquitoes using the BG-Counters
  • Peaks of activity
  • First peak after sunset
  • Peaks during the season (many peaks of activity for Locust in July)
  • Behavior of mosquitoes
  • Curve patterns
  • Activity throughout the evening and night

Conclusion

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Thank you Mario Boisvert, PhD mariob@placermosquito.org