肉孢子虫属的感染频率及其对花脸鸭冬季胴体组成的影响。
The frequency of Sarcocystis spp. and its effect on winter carcass composition of mottled ducks.
作者信息
Moorman T E, Baldassarre G A, Richard D M
机构信息
College of Environmental Science and Forestry, State University of New York, Syracuse 13210.
出版信息
J Wildl Dis. 1991 Jul;27(3):491-3. doi: 10.7589/0090-3558-27.3.491.
Macrocysts of the protozoan parasite Sarcocystis spp. occurred in 34 of 241 (14%) adult and 6 of 70 (8.6%) immature mottled ducks (Anas fulvigula) that were collected in southwestern Louisiana from 1987 to 1989. The prevalence of Sarcocystis spp. among immature ducks was higher than previously reported, possibly because of a longer exposure period. No differences in carcass composition variables were found between heavily infected and uninfected adult mottled ducks during the winter period of the annual cycle. We concluded that macrocysts of Sarcocystis spp. did not influence carcass composition and probably exert negligible effects on survival of parasitized mottled ducks during winter.
1987年至1989年在路易斯安那州西南部采集的241只成年花脸鸭（Anas fulvigula）中，有34只（14%）出现了原生动物寄生虫肉孢子虫属（Sarcocystis spp.）的大囊，70只未成年花脸鸭中有6只（8.6%）出现了该寄生虫大囊。肉孢子虫属在未成年鸭中的感染率高于此前报道，可能是因为暴露时间更长。在年度周期的冬季，重度感染和未感染的成年花脸鸭之间在胴体组成变量上未发现差异。我们得出结论，肉孢子虫属的大囊不会影响胴体组成，可能对冬季感染寄生虫的花脸鸭的生存影响微乎其微。
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