When oncomiracidia of Neobenedenia girellae (Monogenea, Capsalidae) were incubated in wells with lyophilized extracts of fish skin epithelia on the bottom, some attached to the well bottom with the haptor unfolded and shed the ciliated epidermal cells. Based on these morphological changes in oncomiracidia, we developed a new assay method to examine the attachment-inducing capacities of various fish extracts for oncomiracidia. Attachment-inducing capacities were found only in extracts of fish skin epithelium and not in other fish extracts. No significant difference in capacities was observed among extracts of skin epithelia of 4 fish species. Wheat germ lectin and concanavalin A suppressed capacities in extracts of skin epithelia of Japanese flounder and yellowtail, respectively. Suppressed capacities were recovered by adding sugars that bound specifically to these lectins. These results indicate that some sugar-related chemical substances that exist specifically in fish epithelium induce the attachment of N. girellae oncomiracidia.
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April 2000
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April 01 2000
ATTACHMENT-INDUCING CAPACITIES OF FISH TISSUE EXTRACTS ON ONCOMIRACIDIA OF NEOBENEDENIA GIRELLAE(MONOGENEA, CAPSALIDAE) Available to Purchase
Tomoyoshi Yoshinaga;
Tomoyoshi Yoshinaga
National Research Institute of Aquaculture, Hiruta, Tamaki-cho, Watarai-gun, Mie 519-0423, Japan
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Tatsuhiro Nagakura;
Tatsuhiro Nagakura
National Research Institute of Aquaculture, Hiruta, Tamaki-cho, Watarai-gun, Mie 519-0423, Japan
*Department of Aquatic Biosciences, The Graduate School of Agriculture and Life Science, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
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Kazuo Ogawa;
Kazuo Ogawa
National Research Institute of Aquaculture, Hiruta, Tamaki-cho, Watarai-gun, Mie 519-0423, Japan
*Department of Aquatic Biosciences, The Graduate School of Agriculture and Life Science, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
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Hisatsugu Wakabayashi
Hisatsugu Wakabayashi
National Research Institute of Aquaculture, Hiruta, Tamaki-cho, Watarai-gun, Mie 519-0423, Japan
*Department of Aquatic Biosciences, The Graduate School of Agriculture and Life Science, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
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J Parasitol (2000) 86 (2): 214–219.
Citation
Tomoyoshi Yoshinaga, Tatsuhiro Nagakura, Kazuo Ogawa, Hisatsugu Wakabayashi; ATTACHMENT-INDUCING CAPACITIES OF FISH TISSUE EXTRACTS ON ONCOMIRACIDIA OF NEOBENEDENIA GIRELLAE(MONOGENEA, CAPSALIDAE). J Parasitol 1 April 2000; 86 (2): 214–219. doi: https://doi.org/10.1645/0022-3395(2000)086[0214:AICOFT]2.0.CO;2
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