SEASONAL SURVIVAL AND EXPECTATION OF INFECTIVE LIFE OF CULICOIDES SPP (DIPTERA, CERATOPOGONIDAE) IN ISRAEL, WITH IMPLICATIONS FOR BLUETONGUE VIRUS TRANSMISSION AND A COMPARISON OF THE PAROUS RATE IN C-IMICOLA FROM ISRAEL AND ZIMBABWE

SEASONAL SURVIVAL AND EXPECTATION OF INFECTIVE LIFE OF CULICOIDES SPP (DIPTERA, CERATOPOGONIDAE) IN ISRAEL, WITH IMPLICATIONS FOR BLUETONGUE VIRUS TRANSMISSION AND A COMPARISON OF THE PAROUS RATE IN C-IMICOLA FROM ISRAEL AND ZIMBABWE
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DOI:
10.1093/jmedent/22.5.476
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发表时间:
1985-01-01
影响因子:
2.1
通讯作者:
FRISH, K
FRISH, K
中科院分区:
农林科学3区
文献类型:
--
作者:
BRAVERMAN, Y;LINLEY, JR;FRISH, K

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1981-1982年,根据其各自的平均血餐间隔时间、估计的血餐间存活率和感染寿命预期,对拟生库蠓、废弃库蠓和尖口库蠓在以色列传播蓝舌病病毒(BTV)的潜在媒介进行了评价。拟态库蠓由于其季节性、全年存在、存活率和预期感染寿命而被确定为具有最高病媒潜力的物种。本种可作为BTV的越冬媒介。根据同样的标准,C. obsoletus的矢量潜力排名第二。其存活率和感染期较C. imicola,但它也似乎能够作为BTV的越冬剂。尖口库蠓因其数量少、仅在8月至12月出现、存活高峰期有限和预期感染期短而排在第3位。然而,在有限的时间内,3种供试植物的最后2个变量都是C。尖口。在蓝舌病季节,C的平均血餐间隔为3.3至4.6天。imicola,3.5 ~ 5.0 d; oxystoma,C. obsoletus。C. imicola和C.来自津巴布韦汉普登山的imicola的研究表明,在这两个国家,该物种的产蛋率在仲夏至冬季开始时达到高峰,这一时期对应于蓝舌病季节。
The vectorial potential of Culicoides imicola, Culicoides obsoletus, and Culicoides oxystoma with respect to bluetongue virus (BTV) in Israel in 1981-1982 was evaluated based upon their respective mean periods between blood meals, their estimated survival rates between blood meals, and their expectation of infective life. Culicoides imicola was identified as the species with the highest vectorial potential because of its seasonality, presence throughout the entire year, survival rate, and expectation of infective life. This species may serve as an overwintering agent for BTV. By the same criteria, C. obsoletus was ranked 2nd in vectorial potential. Its survival rate and expectation of infective life were more limited than in C. imicola, but it also appeared capable of serving as an overwintering agent for BTV. Culicoides oxystoma was ranked 3rd because of its small numbers, presence only from August to December, limited peak survival rate, and brief period of expected infective life. However, for a limited period the last 2 variables for the 3 species tested were highest in C. oxystoma. During the bluetongue season the mean period between blood meals is 3.3 to 4.6 days for C. imicola, 3.5 to 5.0 days for C. oxystoma, and 4.0 to 4.9 days for C. obsoletus. Comparison between C. imicola from Bet-Dagan, Israel, and C. imicola from Mt Hampden, Zimbabwe, shows that in both countries the parous rate in this species peaks from mid-summer to the onset of winter, a period corrresponding to the bluetongue season.