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Joined: Jul 2016
Posts: 564 Likes: 69
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OP
Joined: Jul 2016
Posts: 564 Likes: 69 |
Hello.
This summer I saw Vorticella on 2 Crayfish, is this normal.
Can they parasit fish. A+
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Joined: Apr 2002
Posts: 15,111 Likes: 478
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Apr 2002
Posts: 15,111 Likes: 478 |
I have never seen or read that Vorticella will infect fish. I think the fish slime layer prevents the attachment of Vorticella stem. In the link below it has some detailed fish parasite information. Vorticella are not mentioned in the Peritrichs section. Peritrichs are a group composed of two main forms those with contractile and non-contractile stems. Voricella belong to the contractile forms. Are you sure growth was Vorticella and not the non-contactile species of Charchesium, Epistylis or Opercularia? https://www.int-res.com/articles/feature/d070p001.pdf
Last edited by Bill Cody; 12/06/21 07:57 PM.
aka Pond Doctor & Dr. Perca Read Pond Boss Magazine - America's Journal of Pond Management
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Joined: Apr 2002
Posts: 15,111 Likes: 478
Moderator Ambassador Field Correspondent Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Apr 2002
Posts: 15,111 Likes: 478 |
More info about stalked protozoans affecting fish. There are several species of Epistylis that infect the skin, fins, and gills of fish (Esch et al., 1976). The urn shaped organism, which is adorned by a ring of cilia on the distal end, is at the terminus of a dichotomous stalk that, in turn, attaches by a disk to hard surfaces of the host such as spines, scales, or gill covers. Groups of Epistylis form a colony, grouping or cluster. These parasites cause irritation and inflammation of the epithelium of the host at the point of attachment which may provide a site for secondary infections of Aeromonas hydrophila. The parasites feed primarily on bacteria and organic material in the water, but they erode scales and hard spines of fins where they attach. Other than the injury incurred by attachment, they are seldom harmful to the host unless there are large masses of these parasites. Several other unicellular parasitic ciliates including Trichodina, Tricodinella, Epistylis, Ichthyobodo, Apiosoma, Vorticella and Ambiphrya are common among wild and cultured tilapia, especially when the fishes are farmed at high stocking densities
aka Pond Doctor & Dr. Perca Read Pond Boss Magazine - America's Journal of Pond Management
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Joined: Jul 2016
Posts: 564 Likes: 69
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OP
Joined: Jul 2016
Posts: 564 Likes: 69 |
Hello.
If I understand correctly, the group of Epistylis attach themselves to their host for the search for food.
In fact they use their host as a Taxi.
Thank you Mr.Cody. A+
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