Mian Lal S, Maag Holly, Tacal Jose V
Department of Health Science and Human Ecology, California State University, San Bernardino 92407-2397, USA.
J Vector Ecol. 2002 Jun;27(1):82-5.
Adult muscoid flies collected from three dairies and eight commercial poultry ranches in San Bernardino County were tested for Salmonella enteritidis. Of the total 2,686 flies tested, 92.3% were Musca domestica, 5.5% Fannia canicularis, 1.9% Ophyra leucostoma, 0.2% Phaenicia sericata, and <0.1% Muscina stabulans. Whereas flies at the dairies belonged exclusively to M. domestica, faunal composition at the poultry ranches was more diverse, including all five species. Among the five fly species, only M. domestica tested positive for serotypes of S. enteritidis. The six isolates from fly pools (25-50 flies per pool) collected from dairies included five S. enteritidis serotype Kentucky and one S. enteritidis ser. Muenster. Isolates from flies collected at poultry ranches were three S. enteritidis ser. Braenderup, S. enteritidis ser. Kottbus, and S. enteritidis ser. Montevideo. The male to female ratio in M. domestica testing positive for S. enteritidis serotypes, was 3 to 8 pools, showing more female than male flies carrying the organism.
对从圣贝纳迪诺县的三个奶牛场和八个商业家禽养殖场采集的成年蝇类进行了肠炎沙门氏菌检测。在总共检测的2686只苍蝇中，92.3%为家蝇，5.5%为厩腐蝇，1.9%为亮黑绿蝇，0.2%为丝光绿蝇，厩蛮蝇占比不到0.1%。奶牛场的苍蝇仅为家蝇，而家禽养殖场的蝇类群落组成更多样化，包括所有这五个物种。在这五种苍蝇中，只有家蝇检测出肠炎沙门氏菌血清型呈阳性。从奶牛场采集的蝇群（每个蝇群25 - 50只苍蝇）中的六个分离株包括五个肠炎沙门氏菌肯塔基血清型和一个肠炎沙门氏菌明斯特血清型。在家禽养殖场采集的苍蝇分离株为三个肠炎沙门氏菌布伦德鲁普血清型、肠炎沙门氏菌科特布斯血清型和肠炎沙门氏菌蒙得维的亚血清型。检测出肠炎沙门氏菌血清型呈阳性的家蝇中，雌雄比例为3比8个蝇群，表明携带该病菌的雌性苍蝇多于雄性苍蝇。
