Population biology of Aedes albopictus (Sukuse) (Diptera : Culicidae) inhabiting on a desert island in Nagasaki, Japan

1998 - 2001年，我们在长崎县前岛荒岛对白纹伊蚊（Sukuse）进行种群研究，以阐明白纹伊蚊的繁殖和持久性。岛上白纹伊蚊种群和与大陆种群的隔离程度。我们于1998年5月至11月在岛上及对面海岸的一个村庄收集人饵。3月底孵化的幼虫5月初发育为成虫，5 - 8月成虫密度呈上升趋势，11月呈下降趋势。1998年5月至7月所收集的雌鸟的产仔率为40%至60%，1999年为60%至80%。所采集雌蜂的平均寿命在6月和7月最长，为20 ~ 30天。从9月到11月，田间采集的雌虫产卵数呈下降趋势。2000年8月进行了一项放生-再捕获实验，以调查伊蚊的扩散和移动情况。岛上白纹伊蚊，估计每日存活率和摄食成功率释放队列。提出了一种新的放养-再捕获数据分析方法，用于评估放养成功率、日存活率和采样效率。采食成功率为21 ~ 25%，日存活率为0.760 ~ 0.799，采样效率为0.358 ~ 0.407。重捕率分别为33.3%和39.0%，释放的白纹伊蚊分布受限，表明白纹伊蚊在岛上的分布范围较小。幼虫同工酶分析结果表明，岛上种群与对岸种群的遗传差异很小。

We carried out population study on Aedes albopictus (Sukuse) on a desert island, Maejima, in Nagasaki prefecture from 1998 - 2001 to clarify the reproduction and persistence ofAe. albopictus population on the island and the degree of isolation from the mainland population. Human bait collection was made from May to November in 1998 and 1999 on the island and at a village located at the opposite seashore. The larvae hatched at the end of March developed to adults at the beginning of May, and the adult density increased from May to August and declined until November. The parous rate of the collected females from May to July ranged between 40 to 60% in 1998, 60 to 80% in 1999. The average life span of collected females was the longest (20 to 30 days) in June and July. Average number of eggs produced by the field-collected females at the insectary declined from September to November. A mark-release-recapture experiment was conducted in August 2000 to investigate dispersal and movement ofAe. albopictus on the island and estimate the daily survival rate and feeding success of the released cohort. A new analytical method of mark-release-recapture data was developed to estimate feeding success, daily survival rate and the sampling efficiency. The feeding success, daily survival rate and sampling efficiency was estimated as 21 - 25%, 0.760 - 0.799, and 0.358 - 0.407, respectively. The high recapture rate of 33.3 and 39.0% and the restricted distribution of the released^, albopictus suggested a small range of dispersal within the island. The results of isozyme analysis of larvae suggested a very small genetic difference between the island and opposite shore population.