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Field trials to test new trap technologies for monitoring Culex populations and the efficacy of the biopesticide formulation VectoMax® FG for control of larval Culex quinquefasciatus in the Alaka'i Plateau, Kaua'i, Hawaii
No full textMosquito-borne avian malaria Plasmodium relictum is a key limiting factor for endemic Hawaiian forest birds. In the past decade, populations of Kaua‘i’s endemic forest birds have been in a steep decline due to an increase in malaria transmission. To evaluate the use of available biopesticides for short-term mosquito control we tested the efficacy of the biopesticide VectoMax® FG against Culex quinquefasciatus larvae in naturally occurring perched stream pools, seeps, and ground pools in forest bird habitat in Kaua‘i’s remote Alaka‘i Plateau. We also tested the efficacy of conventional and newer traps and attractants for the capture of adult Culex quinquefasciatus in Hawaiian rain forests and monitored adult mosquito populations at the Kaua‘i field site. During field trials conducted on Hawai‘i Island we captured more Culex quinquefasciatus in gravid traps than in host-seeking traps. Among the host-seeking traps, Biogents BG-Sentinel 2 traps baited with CO2 and BG-Lure caught more Culex quinquefasciatus and Aedes japonicus japonicus than CDC (Centers for Disease Control and Prevention) traps baited with compressed CO2, CDC traps baited with dry ice, or Biogents BG-Sentinel 2 traps baited with BG-Lure and octenol but not CO2. Both Biogents BG-Sentinel 2 and CDC miniature traps baited with compressed CO2 or dry ice captured significantly more Culex quinquefasciatus than Biogents BG-Sentinel 2 traps baited with octenol and BG-Lure but without CO2. We also found that gravid traps baited with timothy hay infusions caught significantly more Culex quinquefasciatus than traps baited with either a commercial gravid mosquito attractant or an infusion made with pelleted rabbit feed. Traps baited with an infusion of timothy hay and donkey dung were the most effective for Culex quinquefasciatus. On Kaua‘i, we operated Biogents BG-Sentinel 2 traps baited with CO2 and gravid traps and captured 29 mosquitoes in 182 trap-nights from October–November 2016 and 126 mosquitoes in 254 trap-nights from September–October 2017. Contrary to our findings on Hawai‘i Island, most mosquitoes (96%) were captured in Biogents BG-Sentinel 2 traps indicating considerable site-to-site variability in trap efficacy. Weekly adult trapping on Kaua‘i indicates Culex quinquefasciatus populations peaked in October but provided no reliable evidence that larval control had any significant effect on adult populations. Overall, VectoMax® FG was very effective at larval control reducing larval abundance by 95% at 48 hours and out to 1-week post-treatment. Treatment was most effective (100% at 1-week post-treatment) in perched pools when early instar larvae were present and least effective in seeps when pupae and fourth instar larvae were most common. Although post-treatment counts fluctuated dramatically, we observed no evidence of population level impacts to the two most common non-target invertebrates: the water strider Microvelia vagans and endemic damselfly naiads (Megalagrion sp.). VectoMax® FG appears to be an effective and safe biopesticide for the local control of Culex quinquefasciatus larvae in forest bird habitat in the Alaka‘i Plateau. Further studies will be necessary to determine if local larval control significantly reduces adult mosquito abundance and, ultimately, avian malaria transmission, and if there are long term, non-target effects associated with repeated use of VectoMax® FG in natural Hawaiian waterways
Strategies for Differentiation in Math and Science
Get PDFA student presentation to the Spring 2021 Student Research and Creative Works Symposium.Each student has their own strengths and weaknesses. They strive in some subjects and falter in others. But they are expected to learn whether they understand the subject or not. Math and science are subjects that can be difficult for most students. It can be a challenge to grasp concepts that are new and unfamiliar. To create the most success in student learning and knowledge retention, differentiation should be implemented in to the curriculum so that the students will take advantage of their strengths and weaknesses to learn and understand the concepts found in both Math and Science
Memory Forensic comparison Volatility and Autopsy
Get PDFA student presentation to the Fall 2021 Student Research and Creative Works SymposiumThe tools being looked at are Autopsy and Volatility. To keep the testing similar all resources will be the same this includes Virtual machine software same amount of CPU cores and Memory dedicated to the Virtual Machine. The Virtual machines that will be used to conduct tests are Kali Linux and Windows 10. Careful consideration was taking into place so that each tool was supported by each operating system. Each test will be using the same memory payload for each tool. Volatility was found not to have that much of a difference between the Kali and Windows 10 VM. Both versions of Volatility performed the same. This includes the Syntax and how you run the program. For Autopsy both versions are vastly different. The Linux version uses a web interface opposed to the Windows version. The Windows version also displays more data and can support more form of forensic evidence. Its best to use the windows version of Autopsy. And for Volatility it comes down to self-preference Kali Linux or Windows
Makahaiwaʻa - UH West Oʻahu's Weekly Newsletter - Week of June 21, 2021
No full textA Communications Department newsletter from University of Hawai'i - West O'ahu published on Monday, June 21, 2021, to the faculty and staff listserv.A web preservation file has been captured for this newsletter in addition to the PDF. Contact the UHWO Library for access
#1 - A Conversation with Dr. Rebecca Romine
No full textEpisode #1 of the UHWO Health Spotlight, featuring a conversation with Dr. Rebecca Romine where she discusses her background and how she came to be in the health sciences field
Burning the Gods: Mana, Iconoclasm, and Christianity in Oceania
Get PDFThis chapter has been posted with permission from Northwestern University Press
Project-Based Mathematics
Get PDFA student presentation for the Spring 2021 Student Research and Creative Works Symposium.Traditional ways of teaching mathematics have been the norm for many years. More recently, students have been tasked with solving real-world mathematical problems through project-based learning (PBL). Through Boaler’s analysis, she highlights the need for mathematical education reform and how the goal should be that students experience sense-making through their learning. By encouraging students to make real-life connections in their investigations, they can fully grasp and embrace the practicality and necessityof various mathematical concepts (Boaler, 2000)
