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首页> 外文期刊>Journal of Parasitology >COMPARATIVE SUSCEPTIBILITY OF INTRODUCED FOREST-DWELLING MOSQUITOES IN HAWAI'I TO AVIAN MALARIA, PLASMODIUM RELICTUM
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COMPARATIVE SUSCEPTIBILITY OF INTRODUCED FOREST-DWELLING MOSQUITOES IN HAWAI'I TO AVIAN MALARIA, PLASMODIUM RELICTUM

机译：夏威夷引进的居住在森林中的蚊子对疟原虫，疟原虫的比较敏感性

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To identify potential vectors of avian malaria in Hawaiian native forests, the innate susceptibility of Aedes albopictus, Wyeomyia mitchellii, and Culex quinquefasciatus from 3 geographical sites along an altitudinal gradient was evaluated using local isolates of Plasmodium relictum. Mosquitoes were dissected 5–8 and 9–13 days postinfective blood meal and microscopically examined for oocysts and salivary-gland sporozoites. Sporogony was completed in all 3 species, but prevalence between species varied significantly. Oocysts were detected in 1–2% and sporozoites in 1–7% of Aedes albopictus that fed on infected ducklings. Wyeomyia mitchellii was slightly more susceptible, with 7–19% and 7% infected with oocysts and sporozoites, respectively. In both species, the median oocyst number was 5 or below. This is only the second Wyeomyia species reported to support development of a malarial parasite. Conversely, Culex quinquefasciatus from all 3 sites proved very susceptible. Prevalence of oocysts and sporozoites consistently exceeded 70%, regardless of gametocytemia or origin of the P. relictum isolate. In trials for which a maximum 200 oocysts were recorded, the median number of oocysts ranged from 144 to 200. It was concluded that Culex quinquefasciatus is the primary vector of avian malaria in Hawai'i.
机译：为了确定夏威夷本土森林中鸟类疟疾的潜在媒介，使用当地的疟原虫分离株评估了来自三个地理区域沿海拔高度的白纹伊蚊，Wyeomyia mitchellii和库克斯库克斯库克的先天敏感性。感染血粉后5-8天和9-13天解剖蚊子，并在显微镜下检查卵囊和唾液腺子孢子。所有3个物种的口语表达均已完成，但不同物种之间的流行率差异很大。以感染小鸭为食的白纹伊蚊的卵囊检出率为1-2％，子孢子的检出率为1-7％。 Witchyia mitchellii较易感，卵囊和子孢子分别感染了7–19％和7％。在这两个物种中，卵囊的中位数为5或以下。据报道，这只是第二种支持疟原虫生长的Wyeomyia种。相反地​​，来自所有3个地点的库克斯库克斯（Culex quinquefasciatus）被证明非常易感。卵母细胞和子孢子的患病率始终超过70％，而与配子体细胞减少症或遗体假单胞菌的起源无关。在最多记录200个卵囊的试验中，卵囊的中位数范围为144至200。得出的结论是，库克斯库克斯（Culex quinquefasciatus）是夏威夷疟疾的主要媒介。

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    《Journal of Parasitology》 |2005年第4期|p.00000843-00000849|共7页
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    Dennis A. LaPointe M. Lee Goff* Carter T. Atkinson;

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    U.S. Geological Survey, Pacific Island Ecosystems Research Center, P.O. Box 218, Hawai'i National Park, Hawai'i 96718. dennis_lapointe@usgs.gov*Forensic Science Program, Chaminade University, 3140 Waialae Avenue, Honolulu, Hawai'i 96816-1578;

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