Takumi Katsuhisa, Scholte Ernst-Jan, Braks Marieta, Reusken Chantal, Avenell David, Medlock Jolyon M
Laboratory for Zoonoses and Environmental Microbiology, National Institute for Public Health and Environment, Bilthoven, The Netherlands.
Vector Borne Zoonotic Dis. 2009 Apr;9(2):191-6. doi: 10.1089/vbz.2008.0038.
The Asian tiger mosquito Aedes albopictus was detected for the first time in the Netherlands in the summer of 2005. Aedes albopictus is a competent vector of several human viral diseases, and therefore the recent appearance of the vector is a concern to local public health authorities. In 2006 and 2007, the mosquito was found repeatedly and regularly at Lucky bamboo import companies. To assess whether imported Ae. albopictus could establish to produce subsequent generations in the following years or whether the winter conditions in the Netherlands would prove too cold to allow overwintering of diapausing eggs, predictions were made using a Geographic Information Systems (GIS) model based on January average temperature and the annual precipitation recorded in 2006. Seasonal activity of overwintering Ae. albopictus was estimated for temperate strains based on the weekly average temperature and weekly photoperiod using spring egg hatching thresholds of 10.5 degrees C and 11.25 hours, and egg diapause and adult survival thresholds of 9.5 degrees C and 13.5 hours. The analyses indicate that the climate conditions in the Netherlands over the past 10 years were favorable to allow overwintering of diapausing eggs of temperate strains of Ae. albopictus, particularly in the western coastal region. This region was also the area where adult Ae. albopictus were intercepted inside and surrounding plant glasshouses. The estimated number of weeks elapsing between first egg hatching in spring and the production of diapausing eggs in autumn ranged between 17 and 22 weeks in 2006.
2005年夏天，亚洲虎蚊白纹伊蚊首次在荷兰被发现。白纹伊蚊是几种人类病毒性疾病的有效传播媒介，因此这种媒介最近的出现引起了当地公共卫生当局的关注。在2006年和2007年，在幸运竹进口公司反复且定期发现这种蚊子。为了评估进口的白纹伊蚊能否在接下来的几年里建立种群并繁殖后代，或者荷兰的冬季条件是否会因过于寒冷而导致滞育卵无法越冬，研究人员利用基于2006年1月平均气温和年降水量的地理信息系统（GIS）模型进行了预测。根据每周平均气温和每周光周期，利用10.5摄氏度和11.25小时的春季卵孵化阈值以及9.5摄氏度和13.5小时的卵滞育和成虫存活阈值，对温带品系的越冬白纹伊蚊的季节性活动进行了估计。分析表明，过去10年荷兰的气候条件有利于温带品系白纹伊蚊滞育卵的越冬，特别是在西部沿海地区。该地区也是在植物温室内部及周边截获成年白纹伊蚊的区域。2006年，从春季首次卵孵化到秋季产生滞育卵之间估计经过的周数在17至22周之间。
