Windingstad R M, McDonald M E, Locke L N, Kerr S M, Sinn J A
Avian Dis. 1980 Oct-Dec;24(4):1044-9.
A coccidiosis epizootic has occurred in lesser scaup (Aythya affinis) at Bluestem Reservoir in eastern Nebraska during the spring in each of three recent years: 1976-1978. Losses peaked during the period from mid-March through April. As much as 29% of the peak population of scaup using the reservoir died. Necropsies of 72 of the nearly 1390 scaup that died revealed destruction and sloughing of the intestinal mucosa and associated hemorrhaging. Fibrinonecrotic cores were frequently found in the intestinal lumens. Scrapings from the intestinal mucosal contained massive numbers of oocysts of the coccidian Eimeria aythyae. This is the first report of recurrent epizootics of coccidiosis in freeflying waterfowl.
在最近三年（1976 - 1978年）的每年春季，内布拉斯加州东部的蓝茎水库的小潜鸭（Aythya affinis）都发生了球虫病流行。损失在3月中旬至4月期间达到峰值。使用该水库的小潜鸭种群数量峰值时，多达29%死亡。对近1390只死亡小潜鸭中的72只进行尸检发现，肠道黏膜有破坏和脱落，并伴有出血。在肠腔内经常发现纤维蛋白坏死核心。从肠道黏膜刮取物中含有大量球虫艾美耳球虫（Eimeria aythyae）的卵囊。这是自由飞行水禽反复发生球虫病流行的首次报告。
