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Survival of the gemmules of Anheteromeyenia ryderi (Potts) following aerial exposure during winter in New England (1990)

Fell, Paul E. ; Bazer, Laurence J.

Springer

Hydrobiologia 190 (1990), S. 241-246

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Details

ISSN: 1573-5117

Schlagwort(e): gemmules ; desiccation ; low temperature ; Porifera and Anheteromeyenia ryderi

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract Gemmules of Anheteromeyenia ryderi survived 24 h exposure to air temperatures as low as −20 °C under laboratory conditions. Drying the gemmules of A. ryderi at 5 °C under laboratory conditions resulted in a reduced viability and a slower germination rate following rehydration compared with undried control gemmules. Only 25% of the gemmules germinated after drying for one month. Up to 25% of the gemmules of A. ryderi that were tested survived aerial exposure from early November to early April when a pond in Connecticut inhabited by this sponge was drained. During this period air temperatures dropped to as low as −16 °C. Continued aerial exposure of the gemmules during the summer resulted in nearly complete gemmule mortality.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00008191

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