Morrison A, Andreadis T G
Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, CT 06510.
J Am Mosq Control Assoc. 1992 Mar;8(1):52-7.
The spatial distribution and preadult mortality patterns of 4 cohabiting species of Aedes mosquitoes were studied in a temporary vernal pool at Mt. Carmel, CT, from March to May 1990. The dominant species was Ae. stimulans (79.9%), followed by Ae. canadensis (10.7%), Ae. excrucians (7.5%) and Ae. cinereus (1.9%). First instar larvae of all species aggregated at the edge of the pool and then dispersed to deeper regions as they matured. Larval mortality was high, and the majority occurred during the first stadium (80.9% for Ae. canadensis, 88.9% for Ae. excrucians, 89.1% for Ae. stimulans and 90.0% for Ae. cinereus). A predatory chaobrid, Mochlonyx cinctipes, was implicated as the major mortality factor affecting larval populations.
1990年3月至5月，在康涅狄格州卡梅尔山的一个临时春季池塘中，研究了4种共居的伊蚊的空间分布和成虫前期死亡率模式。优势种是骚扰伊蚊（79.9%），其次是加拿大伊蚊（10.7%）、严酷伊蚊（7.5%）和灰黑伊蚊（1.9%）。所有种类的一龄幼虫都聚集在池塘边缘，随着它们的成熟，再分散到更深的区域。幼虫死亡率很高，且大多数发生在第一龄期（加拿大伊蚊为80.9%，严酷伊蚊为88.9%，骚扰伊蚊为89.1%，灰黑伊蚊为90.0%）。一种捕食性摇蚊，带纹沼摇蚊，被认为是影响幼虫种群数量的主要死亡因素。
