Skoda S R, Thomas G D, Campbell J B
Midwest Livestock Insects Research Unit, USDA-ARS, Lincoln, Nebr.
J Econ Entomol. 1991 Feb;84(1):191-7. doi: 10.1093/jee/84.1.191.
A 3-yr study was done to determine where and at what relative frequency stable fly, Stomoxys calcitrans (L.), immatures develop in beef cattle feedlot pens and the relationship of stable fly immature versus adult sample densities. Pens within feedlots were divided into five areas (the feed apron, back fence, side fences, mound, and the general lot); from each area, three core samples were randomly taken weekly. In 1986 and 1987, the feed apron yielded the most immature stable flies (62.5%). The mound and side fences yielded a significant percentage of flies (24.6 and 8.4%, respectively). There was a strong correlation (overall r = 0.86) between numbers of immatures and numbers of adults 2 wk later. In 1988, a drought year, low numbers of immatures were collected, and only one correlation between numbers of immatures and adults was significant. In all 3 yr, sample densities of stable fly immatures peaked and began to decline by midseason. Waste management along the feed apron and mound areas could significantly reduce stable fly populations. Sampling immatures from these areas could permit prediction of adult numbers.
开展了一项为期3年的研究，以确定厩螫蝇（Stomoxys calcitrans (L.)）幼虫在肉牛饲养场围栏中的发育地点和相对频率，以及厩螫蝇幼虫与成虫样本密度之间的关系。饲养场内的围栏被分为五个区域（饲料围裙区、后围栏、侧围栏、土堆和一般场地）；每周从每个区域随机采集三个核心样本。1986年和1987年，饲料围裙区产生的厩螫蝇幼虫最多（62.5%）。土堆和侧围栏产生的厩螫蝇幼虫比例显著（分别为24.6%和8.4%）。幼虫数量与两周后的成虫数量之间存在很强的相关性（总体r = 0.86）。1988年是干旱年，采集到的幼虫数量较少，幼虫与成虫数量之间只有一组相关性显著。在所有三年中，厩螫蝇幼虫的样本密度在季节中期达到峰值并开始下降。对饲料围裙区和土堆区域进行废物管理可显著减少厩螫蝇种群数量。从这些区域采集幼虫样本可以预测成虫数量。
