THE LIFE EXPECTANCY OF PHLEBOTOMINE SANDFLIES - 1ST FIELD ESTIMATES FROM SOUTHERN FRANCE
THE LIFE EXPECTANCY OF PHLEBOTOMINE SANDFLIES - 1ST FIELD ESTIMATES FROM SOUTHERN FRANCE
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DOI：
10.1111/j.1365-2915.1987.tb00372.x
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发表时间：
1987-10-01
影响因子：
1.9
通讯作者：
KILLICKKENDRICK, R
中科院分区：
文献类型：
--
作者：
DYE, C;GUY, MW;KILLICKKENDRICK, R
1. 在法国南部对利什曼原虫（leishmania infantnicolle）的病媒——白蛉（phlebotomus ariasiTonnoir）进行了实地研究，解决了以下问题：是否有可能可靠地估计这种白蛉的预期寿命；能否发现预期寿命的时空变化，这种变化对疾病传播是否具有重要意义？在1985年和1986年的活动期间，研究人员在csamevines和Garrigues的7个地点用捕光器捕获了1万多只雌性蚊子，通过检查它们卵巢中的卵泡遗迹，估计了它们的预期寿命。虽然不产蝇和产蝇之间的区别很容易区分，但对产蝇产卵次数的评估是不可靠的。因此，对预期寿命的最佳估计是根据产率计算出来的。这两年从塞文山脉的一个地点收集的大量样本给出了非常相似的预期寿命估计。从csamvenes和Garrigues得到的估计也没有显著差异，尽管它们的植被和气候不同。因此，白蛉种群数量和犬利什曼病流行的巨大区域差异不能用成虫存活率的差异来解释。由于没有系统的年度或区域变化，可以从两年中所有站点收集的数据计算出有用的平均预期寿命。1.54 （SE 0.04）卵巢周期。但是，这种估计对存活率是离散变量而不是连续变量的假设很敏感。产率的局部变化可能与捕集器toP的邻近有关。ariasiemergence网站。
1. A field study ofPhlebotomus ariasiTonnoir, the vector ofLeishmania infantumNicolle in southern France, addressed the following questions: Is it possible to estimate reliably the life expectancy of this sandfly; can spatial or temporal variation in the life expectancy be detected, and is such variation significant for disease transmission?2. Life expectancy was estimated by examining follicular relics in the ovaries of more than ten thousand females caught in light traps at seven sites in the Cévennes and the Garrigues, throughout their active period in 1985 and 1986. Whilst the distinction between nulliparous and parous flies was easily made, assessments of the number of times a parous fly had laid eggs were unreliable. Best estimates of life expectancy were therefore calculated from the parous rate.3. Large samples collected from one site in the Cevennes in both years gave very similar estimates of life expectancy.4. There was also no significant difference between estimates obtained from the Cévennes and the Garrigues, despite their distinct vegetation and climates. Therefore, large regional differences in sandfly population size and the prevalence of canine leishmaniasis cannot be explained by a difference in adult survival rate.5. With no systematic annual or regional variation, a useful mean life expectancy can be calculated from the data collected at all sites in both years. It is 1.54 (SE 0.04) ovarian cycles. However, this estimate is sensitive to the assumption that survival rate is a discrete rather than a continuous variable.6. Local variation in the parous rate may be associated with the proximity of traps toP.ariasiemergence sites.