Budding and regeneration potential of a calyx of a freshwater Kamptozoan, Urnatella gracilis

There are only two freshwater Kamptozoans worldwide: Urnatella gracilis Leidy, 1851 and Loxosomatoides sirindhornae Wood, 2005. U. gracilis is present in Japan and is expanding its distribution, especially in Lake Hachiro. We investigated the budding and regeneration potential of a calyx of U. graci...

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Published inJournal of Experimental Zoology Part A: Ecological and Integrative Physiology Vol. 341; no. 5; pp. 578 - 586
Main Authors Ishii, Teruhisa, Ooga, Keiko, Kato, Manami, Sakai, Ayako
Format Journal Article
LanguageEnglish
Published United States Wiley 01.06.2024
Subjects
Animals
budding
Fresh Water
freshwater Kamptozoan
Hydrogen-Ion Concentration
regeneration
Regeneration - physiology
Salinity
tolerance of salinity
Urnatella
freshwater Kamptozoan
Urnatella
regeneration
tolerance of salinity
budding
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Summary:There are only two freshwater Kamptozoans worldwide: Urnatella gracilis Leidy, 1851 and Loxosomatoides sirindhornae Wood, 2005. U. gracilis is present in Japan and is expanding its distribution, especially in Lake Hachiro. We investigated the budding and regeneration potential of a calyx of U. gracilis to clarify the mechanisms underlying its ability of regeneration. Our experiments revealed that the formation of a new calyx at the most apical position and strong adaptation to freshwater in pH 7.0. Budding successfully occurred in water with 0% salinity, however, in water with 0.15%–0.3% salinity budding was occurred in low level. These features may be very useful for propagation at Lake Hachiro in which it has to be expected that no sexual reproduction is observed because of low temperatures below 28°C. Now as Lake Hachiro has water with no salinity and almost pH 7.0, Lake Hachiro is a good place to live for U. gracilis.
ISSN:2471-5638
2471-5646
DOI:10.1002/jez.2807