Kīpahulu Valley, Haleakalā National Park, Hawai'i Adult Mosquito Monitoring 2022-2023.
Dates
Start Date
2022-08-30
End Date
2023-09-26
Publication Date
2024-09-06
Citation
LaPointe, D.A., Smith, L.K., Camp, R.J., and McClure, K.M., 2024, Kīpahulu Valley, Haleakalā National Park, Maui Seasonal Distribution and Relative Abundance of the Mosquito Culex quinquefasciatus, 2022-2023: U.S. Geological Survey data release, https://doi.org/10.5066/P13UJFWU.
Summary
As part of a larger study looking at the seasonal distribution and relative abundance of the southern house mosquito Culex quinquefasciatus in Kīpahulu Valley, Haleakalā National Park, adult mosquito distribution and abundance was monitored at two altitudinal sites throughout the year. Study sites at Delta Camp (915 m asl) and Palikea Camp (1280 m asl) were visited twice during each three-month season from September 2022 to September 2023. At each study site, 15 BioGents (BG) Sentinel II traps (S), 15 BioGents Pro traps (P), and 15 Center for Disease Control (CDC) Gravid traps (G) were operated for 4-7 nights across a 1-kilometer square area. CO2 baited traps (S and P) were operated at 30 fixed transect stations located 100 meters [...]
Summary
As part of a larger study looking at the seasonal distribution and relative abundance of the southern house mosquito Culex quinquefasciatus in Kīpahulu Valley, Haleakalā National Park, adult mosquito distribution and abundance was monitored at two altitudinal sites throughout the year. Study sites at Delta Camp (915 m asl) and Palikea Camp (1280 m asl) were visited twice during each three-month season from September 2022 to September 2023. At each study site, 15 BioGents (BG) Sentinel II traps (S), 15 BioGents Pro traps (P), and 15 Center for Disease Control (CDC) Gravid traps (G) were operated for 4-7 nights across a 1-kilometer square area. CO2 baited traps (S and P) were operated at 30 fixed transect stations located 100 meters apart and baited with CO2 and BG-Lure or CO2 alone, respectively. Gravid traps were co-located with P traps and baited with a 5-day-old timothy hay infusion. CO2 was released at a delivery rate of 250 ml/min. BioGents Pro traps were suspended in the tree canopy and configured like CDC miniature light traps but were not operated with lights. Acoustic lures (400 hertz) were briefly used with S traps in an attempt to enhance male Culex quinquefasciatus capture. All traps were operated from late afternoon to mid morning of the following day. Each morning captured mosquitoes were extracted from the traps, identified, sexed, enumerated, and preserved dry or in 100% molecular grade ethanol in batches of 1-10. Culex quinquefasciatus and Aedes japonicus adults were captured seasonally at both sites. No Aedes albopictus were captured. Only female mosquitoes were captured.
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KipahuluAdultMonitoring.xml Original FGDC Metadata
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KipahuluAdultMonitoringData_2022-23.csv
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Purpose
Kīpahulu Biological Reserve in Haleakalā NP (HALE) is nationally and globally significant as one of the most remote, intact, dramatic valleys in the Pacific containing remarkable biodiversity found nowhere else on the planet. It is critical habitat for 6 Hawaiian honeycreepers, including 3 endemic to Maui: the critically-endangered ‘Ākohekohe (Palmeria dolei), critically-endangered Kiwikiu (Pseudonestor xanthophrys), and endangered Maui ʻAlauahio (Paroreomyza montana). Populations of these endangered species have declined dramatically over recent decades. Mosquito-borne avian malaria exacerbated by climate change is the key limiting factor of Hawaiian forest bird populations. Preservation of endemic forest birds and restoration of Hawaiian forest bird communities in Kīpahulu Valley will rely on landscape-scale mosquito control such as Wolbachia-based Incompatible Insect Technique (IIT). The mosquito trap capture data can be used to estimate densities and occupancy rates of mosquitoes and to guide control efforts both geographically and temporally to be most efficacious.Trap capture data can also be used for determining the most efficient trap technology and trapping effort to employ for successful monitoring of Culex quinquefasciatus populations.