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Parorchis acanthus is a parasitic flatworm of the class Trematoda. It is a parasitic castrator of the common periwinkle Littorina littorea. Unlike many trematode species it encysts on hard surfaces and not inside a second intermediate host.

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  • Parorchis acanthus (en)
  • Parorchis acanthus (nl)
  • Parorchis acanthus (sv)
  • 有棘平睾吸虫 (zh)
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  • Parorchis acanthus is een soort in de taxonomische indeling van de platwormen (Platyhelminthes). De worm is tweeslachtig en kan zowel mannelijke als vrouwelijke geslachtscellen produceren. De soort leeft in zeer vochtige omstandigheden. De platworm behoort tot het geslacht en behoort tot de familie . De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd in door Nicoll. (nl)
  • Parorchis acanthus är en plattmaskart som först beskrevs av Nicoll 1906. Parorchis acanthus ingår i släktet Parorchis och familjen Philophthalmidae. Inga underarter finns listade i Catalogue of Life. (sv)
  • 有棘平睾吸虫(学名:Parorchis acanthus)为嗜眼科平睾属的动物。分布于欧洲、美洲、亚洲、大洋洲以及中国大陆的福建等地,营寄生生活,终末宿主为黑腹滨鹬、铁嘴沙鹬、绿脚鹬以及寄生部位为泄殖腔。 (zh)
  • Parorchis acanthus is a parasitic flatworm of the class Trematoda. It is a parasitic castrator of the common periwinkle Littorina littorea. Unlike many trematode species it encysts on hard surfaces and not inside a second intermediate host. (en)
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  • Nicoll, 1907 (en)
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  • Parorchis (en)
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  • acanthus (en)
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  • Parorchis acanthus is a parasitic flatworm of the class Trematoda. It is a parasitic castrator of the common periwinkle Littorina littorea. Unlike many trematode species it encysts on hard surfaces and not inside a second intermediate host. Free-living cercariae are released from the snail hosts to encyst on hard surfaces, generally the shells of bivalves. The release is encouraged by warmer temperatures and increased light intensity. Encystment on bivalves is most successful when they enter the mussel with the inhalation current first. They then actively emerge, using their suckers and then encyst on the shell. If the bivalve is then eaten by a bird P. acanthus will be transmitted to the definitive host. Survival and successful encystment can be reduced by the presence of , such as the barnacle Semibalanus balanoides, on the shell. Castration of the snail molluscan host can result in a decline in host numbers and, in turn, can lead to more ungrazed algae, with corresponding increases in invertebrate populations and a greater diversity of smaller Littorina snails. The increased numbers of small prey items makes the affected rocky coasts more attractive to birds such as the purple sandpiper and European rock pipit. This is likely to facilitate transmission of P. acanthus to its definitive host. (en)
  • Parorchis acanthus is een soort in de taxonomische indeling van de platwormen (Platyhelminthes). De worm is tweeslachtig en kan zowel mannelijke als vrouwelijke geslachtscellen produceren. De soort leeft in zeer vochtige omstandigheden. De platworm behoort tot het geslacht en behoort tot de familie . De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd in door Nicoll. (nl)
  • Parorchis acanthus är en plattmaskart som först beskrevs av Nicoll 1906. Parorchis acanthus ingår i släktet Parorchis och familjen Philophthalmidae. Inga underarter finns listade i Catalogue of Life. (sv)
  • 有棘平睾吸虫(学名:Parorchis acanthus)为嗜眼科平睾属的动物。分布于欧洲、美洲、亚洲、大洋洲以及中国大陆的福建等地,营寄生生活,终末宿主为黑腹滨鹬、铁嘴沙鹬、绿脚鹬以及寄生部位为泄殖腔。 (zh)
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