期刊
ANIMALS
卷 13, 期 18, 页码 -出版社
MDPI
DOI: 10.3390/ani13182875
关键词
ducks; hunting; macrocysts; Sarcocystis rileyi; infection rates; long-term monitoring
Wildfowl meat infected with S. rileyi macrocysts is not suitable for human consumption. Ducks are important game birds in Europe, and S. rileyi infections cause significant economic losses. A study in Lithuania, Russia, Belarus, and Latvia found that the prevalence of macrocysts in Mallards was similar across the countries, with higher infection rates observed in November-December compared to September-October. DNA analysis confirmed S. rileyi infection in all tested birds.
Wildfowl meat infected with S. rileyi macrocysts is not suitable for human consumption. Ducks are among the main game birds in Europe, and S. rileyi infections cause significant economic losses. In 2011-2022, a total of 2649 anseriforms collected in Lithuania and 619 Mallards (Anas platyrhynchos) hunted in the Kaliningrad region of Russia, Belarus, and Latvia were tested for macrocysts. In Lithuania, macrocysts were detected in 206 of 2362 Mallards (8.7%) and in two of 88 (2.3%) Eurasian Teals (Anas crecca). The prevalence of macrocysts in the other three countries, Belarus (5.9%), Russia (5.0%), and Latvia (3.1%), was similar. For species identification, macrocysts isolated from 37 Mallards (21 from Lithuania, 8 from Russia, 6 from Belarus, and 2 from Latvia) were subjected to sequencing of the ITS1 region. Based on DNA analysis, S. rileyi was confirmed in all tested birds. By comparing the infection rates of macrocysts in Mallards in Lithuania, significant differences were observed in different years (p = 0.036), and a significantly higher prevalence of infection was established in November-December than in September-October (p = 0.028). Given the amount of data per decade on the prevalence of S. rileyi, awareness of infection needs to be increased.
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