Chumsri A, Tina F W, Jaroensutasinee M, Jaroensutasinee K
Centre of Excellence for Ecoinformatics, School of Science, Walailak University, Nakhon Si Thammarat 80161, Thailand.
Trop Biomed. 2018 Mar 1;35(1):111-125.
The aims of this study are to examine the effects of (1) socio-cultural practices of using different types of water storage containers, and (2) seasons, on the numbers of Aedes aegypti and Aedes albopictus larvae in the five sub-districts of Lansaka district. We randomly selected 20 houses per sub-district per month, with a total of 600 households, and collected Aedes mosquito larvae from different types of containers (indoor/outdoor, natural/artificial, dark/light coloured, and with/without lids) during both the dry (March-May 2015) and wet (October-December 2015) seasons. Ae. aegypti and Ae. albopictus larvae found in each container were identified and counted. The larval indices (i.e., house index (HI), container index (CI), and Breteau index (BI)) were calculated for each sub-district, and for each season. Our results showed that socio-cultural practices of using different types of containers differed between sub-districts and seasons. Ae. albopictus larval indices were higher than Ae. aegypti larval indices in both seasons. Ae. albopictus larval indices were higher in the wet season than in the dry season; the opposite results were observed for Ae. aegypti. Ae. albopictus larvae were more commonly found in outdoor containers in both seasons, but were found to be more in light coloured and without lid containers during the dry season, whereas Ae. aegypti larvae were more often found in indoor containers in both seasons, but are found more in light coloured containers in the dry season. There were positive correlations between container numbers and mosquito larvae numbers in all sub-districts. These results indicate that seasons and water container types have strong effects on the breeding of Aedes mosquito larvae. This knowledge could be used to obtain a better understanding on how to take initiatives that could promote the prevention and control of dengue vectors.
（1）使用不同类型储水容器的社会文化习俗，以及（2）季节，对兰卡卡区五个分区埃及伊蚊和白纹伊蚊幼虫数量的影响。我们每月在每个分区随机选取20户家庭，共计600户，并在旱季（2015年3月至5月）和雨季（2015年10月至12月）期间，从不同类型的容器（室内/室外、天然/人工、深色/浅色、有盖/无盖）中采集伊蚊幼虫。对每个容器中发现的埃及伊蚊和白纹伊蚊幼虫进行鉴定和计数。计算每个分区以及每个季节的幼虫指数（即房屋指数（HI）、容器指数（CI）和布雷图指数（BI））。我们的结果表明，不同分区和季节使用不同类型容器的社会文化习俗存在差异。两个季节中，白纹伊蚊的幼虫指数均高于埃及伊蚊的幼虫指数。白纹伊蚊的幼虫指数在雨季高于旱季；埃及伊蚊则呈现相反的结果。两个季节中，白纹伊蚊幼虫在室外容器中更为常见，但在旱季，浅色且无盖的容器中白纹伊蚊幼虫更多，而埃及伊蚊幼虫在两个季节中更多见于室内容器，但在旱季，浅色容器中埃及伊蚊幼虫更多。所有分区的容器数量与蚊虫幼虫数量之间均呈正相关。这些结果表明，季节和水容器类型对伊蚊幼虫的滋生有强烈影响。这些知识可用于更好地理解如何采取措施促进登革热媒介的预防和控制。
