Cercaria Explained

A cercaria (plural cercariae) is the larval form of the trematode class of parasites. It develops within the germinal cells of the sporocyst or redia.[1] A cercaria has a tapering head with large penetration glands.[2] It may or may not have a long swimming "tail", depending on the species.[1] The motile cercaria finds and settles in a host where it will become either an adult, or a mesocercaria, or a metacercaria, according to species.

The term Cercaria is also used as a genus name in descriptions of species when only the larval form is known.[3]

Rotifers (Rotaria rotatoria) produce a chemical, Schistosome Paralysis Factor, suppressing cercaria swimming and reducing infections.[4]

Notes and References

  1. Web site: Glossary. VPTH 603 Veterinary Parasitology. University of Pennsylvania School of Veterinary Medicine. 2019-05-22. https://web.archive.org/web/20110718210627/http://cal.vet.upenn.edu/projects/parasit06/website/glossary.htm. 2011-07-18. dead.
  2. Web site: Schistosoma. Australian Society for Parasitology. 19 February 2011.
  3. 2023. Cercaria Müller, 1773. 728666. 2023-02-26 .
  4. Khosla . Chaitan . Gao. Jiarong. Yang. Ning. Lewis. Fred A.. Yau. Peter. Collins. James J.. Sweedler. Jonathan V.. Newmark. Phillip A.. A rotifer-derived paralytic compound prevents transmission of schistosomiasis to a mammalian host. PLOS Biology. 17. 10. 2019. e3000485. 1545-7885. 10.1371/journal.pbio.3000485. 31622335 . 6797223 . free.

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