Living reference work entry
Greek: para = besides, similar; amphi = on both sides; stoma = mouth. Latin: cervus = stag. English: rumen fluke. The name refers to the two suckers being situated at the anterior and posterior pole.
These hermaphroditic worms reach a size of 13 × 5 mm and live in the rumen of cattle but also in other grass feeding vertebrates (sheep, goats, buffaloes, wild animals). The adult worms are characterized by two ventrally arranged suckers (Figs. 1, 2, and 3). The very large eggs (180 μm × 100 μm) are found in the feces and develop within 10–20 days a miracidium larva (Fig. 1). First intermediate hosts are water snails (genera Anisus, Planorbis). After about 5 weeks, cercariae were set free in water ponds. These cercariae become attached at plants in or at the border of ponds and form encysted metcercariae. After ingestion, these metacercariae are first attached at the epithelium of the duodenum, from where they...
KeywordsDrinking Water Oral Uptake Intermediate Host Wild Animal Adult Worm
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