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Wiktionary英語版での「cassiosome」の意味 |
cassiosome
語源
From Cassio(pea) (a genus of jellyfish) + -some, referring to a genus containing some of the jellyfish found to produce them. Coined 2020 by Cheryl L. Ames, et al., in a paper published in Communications Biology (see quotations below).
名詞
cassiosome (複数形 cassiosomes)
- A stinging-cell structure, composed of a layer of mainly nematocytes surrounding a core of dinoflagellates, amoebocytes and mesoglea, expelled within mucus by Rhizostomeae jellyfish to sting (かつ in some cases kill) prey in the surrounding water.
- 2020 February 13, Ames, Cheryl L., Anna ML Klompen, Krishna Badhiwala, Kade Muffett, Abigail J. Reft, Mehr Kumar, Jennie D. Janssen et al., “Cassiosomes are stinging-cell structures in the mucus of the upside-down jellyfish Cassiopea xamachana”, in Communications Biology, volume 3, number 67, DOI: , PMID 32054971:
- Released within the mucus, we discovered three types of undeployed nematocysts, as well as microscopic, motile, cellular masses composed of nematocytes that we formally call cassiosomes. While cassiosomes bear some resemblance to another cnidarian structure originating in mesenteries of the starlet sea anemone Nematostella called nematosomes, the unique traits of cassiosomes in C. xamachana include their release into the water column within mucus, the ability to trap and kill prey as mobile grenades outside of the medusa, their organization as an outer epithelial layer surrounding a mostly empty core (rather than a solid ball of cells), and the presence of centrally-located endosymbiotic Symbiodinium dinoflagellates.
- 2021 April 13, Ames, Cheryl Lewis, Aki H. Ohdera, Sophie M. Colston, Allen G. Collins, William K. Fitt, André C. Morandini, Jeffrey S. Erickson, and Gary J. Vora, “Fieldable Environmental DNA Sequencing to Assess Jellyfish Biodiversity in Nearshore Waters of the Florida Keys, United States”, in Frontiers in Marine Science, volume 8, DOI: :
- Cassiopea xamachana medusae are known to release large amounts of mucus that contains motile clusters of stinging cells called cassiosomes (Ames et al., 2020). Thought to be an important component of healthy mangrove ecosystems, both spawn and mucus likely contributed to our success in preferentially amplifying Cassiopea eDNA (representing 82% of all matched reads).
- For more quotations using this term, see Citations:cassiosome.
使用する際の注意点
- Water containing clouds of cassiosomes is referred to as stinging water.
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Text is available under Creative Commons Attribution-ShareAlike (CC-BY-SA) and/or GNU Free Documentation License (GFDL). Weblio英和・和英辞典に掲載されている「Wiktionary英語版」の記事は、Wiktionaryのcassiosome (改訂履歴)の記事を複製、再配布したものにあたり、Creative Commons Attribution-ShareAlike (CC-BY-SA)もしくはGNU Free Documentation Licenseというライセンスの下で提供されています。 |
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