Dennis Lapointe

23 items:

Kīpahulu Valley, Haleakalā National Park and Hawai'i Volcanoes National Park, Hawai'i, Culex quinquefasciatus Egg Raft Hatch Rate Data, 2022-2023 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, C. quinquefasciatus egg rafts were collected to develop field techniques and determine differences in egg viability (percent hatch) in wild populations. Ovicups baited with a 5-day-old timothy hay infusion were co-located with Sentinel traps and operated for one week, twice during each sampling season at Kipahulu study sites Delta Camp (915 m asl) and Palikea Camp (1280 m asl) from 9 March 2023 to 20 September 2023. Egg rafts were also collected at Hawai'i Volcanoes National Park opportunistically to further develop field techniques... Categories: Data; Tags: Haleakalā National Park, Kīpahulu Valley, Maui, Palikea Stream, USGS-EMA-LOW Fish and Wildlife Disease, All tags... biota, wildlife disease, Fewer tags
Kīpahulu Valley, Haleakalā National Park, Maui Seasonal Distribution and Relative Abundance of the Mosquito Culex quinquefasciatus, 2022-2023 This USGS data release consists of six data sets and accompanying metadata for a year-long study on the seasonal distribution and relative abundance of the southern house mosquito Culex quinquefasciatus in Kīpahulu Valley, Haleakalā National Park, critical habitat for two endangered Maui endemic forest birds. Culex quinquefasciatus is the vector of the avian malaria Plasmodium relictum, a key limiting factor of endemic Hawaiian forest birds. The main components of the study included: (1) adult mosquito monitoring to document the altitudinal distribution, seasonal occurrence, relative abundance, and trapping efficacy of Culex quinquefasciatus (Kīpahulu Valley, Maui, 1 file); (2) stream surveys to determine the larval... Categories: Data; Tags: Haleakalā National Park, Hawai'i Island, Hawai'i Volcanoes National Park, Hawaiian Islands, Kauai, All tags...
Will a warmer and wetter future cause extinction of native Hawaiian forest birds? Abstract (from http://onlinelibrary.wiley.com/doi/10.1111/gcb.13005/abstract): Isolation of the Hawaiian archipelago produced a highly endemic and unique avifauna. Avian malaria ( Plasmodium relictum), an introduced mosquito-borne pathogen, is a primary cause of extinctions and declines of these endemic honeycreepers. Our research assesses how global climate change will affect future malaria risk and native bird populations. We used an epidemiological model to evaluate future bird–mosquito–malaria dynamics in response to alternative climate projections from the Coupled Model Intercomparison Project. Climate changes during the second half of the century accelerate malaria transmission and cause a dramatic decline... Categories: Publication; Types: Citation; Tags: Avian, Birds, Forests, Malaria, Pacific Islands CASC, All tags... Wildlife and Plants, Fewer tags
Facilitated Adaptation for Conservation – Can Gene Editing Save Hawaii's Endangered Birds from Climate Driven Avian Malaria? Abstract (from ScienceDirect): Avian malaria has played a significant role in causing extinctions, population declines, and limiting the elevational distribution of Hawaiian honeycreepers. Most threatened and endangered honeycreepers only exist in high-elevation forests where the risk of malaria infection is limited. Because Culex mosquito vectors and avian malaria dynamics are strongly influenced by temperature and rainfall, future climate change is predicted to expand malaria infection to high-elevation forests and intensify malaria infection at lower elevations, likely resulting in future extinctions and loss of avian biodiversity in Hawaii. Novel, landscape-level mosquito control strategies are promising, but... Categories: Publication; Types: Citation
Kawaikoi Mosquito Dissections 2016-2017 Mosquito-borne avian malaria is a key limiting factor on Hawaiian forest bird populations. Preservation of endemic forest birds and restoration of Hawaiian forest bird communities will rely on mosquito control. While landscape level control is being developed, managers need short term and reliable tools for monitoring and controlling mosquito populations to protect remaining breeding bird populations. As part of a larger study looking at the efficacy of the biopesticide VectoMax FG for control of larval Culex quinquefasciatus, USGS and DOFAW personnel monitored adult mosquitoes (Culex quinquefasciatus and Aedes japonicus) along the Kawaikoi Stream during late summer, September through November 2016 and 2017. Ten... Categories: Data; Tags: Alakai Wilderness Preserve, Culex quinquefaciatus, Hawaiian honeycreepers, Kauai, Kawaikoi Stream, All tags...

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