1. Biology of a monogenean parasite, _Neobenedenia_ sp.


    from South Australian Museum / Added

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    A monogenean (flatworm) parasite, _Neobenedenia_ species, removed from the skin of a barramundi (_Lates calcarifer_) in laboratory culture. Marine Monogenea are studied by the Parasitology Section at the South Australian Museum. Principal Research Scientist Assoc Prof Ian Whittington compiled this short video to highlight several biologies and behaviours by a 'typical' monogenean parasite species from the skin and fins of its fish host. This captioned video shows attachment, gas exchange, egg manufacture and laying, the feeding process and egestion of digested wastes. The specimen, approximately 3 mm long, was captured on video in July 2011 in the laboratory of a former PhD student and now research collaborator, Dr Kate Hutson, James Cook University. Ongoing research by the South Australian Museum investigates species identification and 'species complexes' among _Neobenedenia_. For example, consult research published by I.D. Whittington (2004) in Folia Parasitologica 51: 109–122. See: http://folia.paru.cas.cz/pdfs/showpdf.php?pdf=20703

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    • Dendromonocotyle lasti


      from South Australian Museum / Added

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      Monogenean (flatworm) parasite, _Dendromonocotyle lasti_, after removal from the dorsal skin surface of a whipray (_Himantura_ species). The parasite is ‘looping’ (with some prodding!) across a glass surface. Marine monogeneans like this are studied by the Parasitology Section at the South Australian Museum. This specimen, approximately 2–3 mm long, was collected and captured on video in 2002 by Museum parasitologists Leslie Chisholm and Ian Whittington at Stradbroke Island, Moreton Bay, Queensland, Australia. The parasite species was named for fish taxonomist Dr Peter Last (CSIRO Marine Research, Hobart, Tasmania). Research published by L.A. Chisholm and I.D. Whittington (2005) in Systematic Parasitology 60: 81–89. See: http://link.springer.com/article/10.1007%2Fs11230-004-1384-7

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      • Gyrodactylid monogenean parasites feeding on gill of spotfin killifish (Fundulus luciae)


        from Kristen Trevey / Added

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        Monogenea is a class of parasitic flatworms (related groups include turbellarians, tapeworms and trematodes). Monogeneans, however, have a distinctive "haptor"–the large hooks you see surrounded by smaller marginal hooks–that they use to attach to the fish. This is lacking in the other flatworm groups. The monogeneans in this video are from the subgroup monopisthocotylea because they have hooks rather than clamps. More specifically, these parasites are from the family Gyrodactylidae. A cool fact: this family is often compared to Russian nesting dolls because adults contain fully developed embryos, which contain an embryo, ... (you can see the haptor of an embryo inside one of the adults at 1:23 in the video!). Pretty cool!

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