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Journal of Plankton Research, Vol 21, 1183-1189, Copyright © 1999 by Oxford University Press

ORIGINAL ARTICLES

Short communication. Determination of generation time and asexual fecundity of doliolids (Tunicata, Thaliacea)

G Paffenhofer and D Gibson
Skidaway Institute of Oceanography, 10 Ocean Science Circle, Savannah, GA 31411, USA

The goal of this study was to provide temporal information on the generation time of Dolioletta gegenbauri and some of the life cycle's components. At 20C and 90 g C l-1 of ingestible phytoplankton. D.gegenbauri's life cycle is completed in 20.5 days. Phorozooids 5 mm produce on average 11.0 gonozooids day-1 over a period of 8-18 days. Utilizing field data on the abundance and size distribution of an assemblage of phorozooids and nurses, in conjunction with experimentally obtained rates, indicates that asexual production per cubic meter by phorozooids with that of nurses should result in rapid colonization of a wide shelf by doliolids, as observed during July and August 1981 on the southeastern continental shelf of the USA.
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 J PLANKTON RESHome page
D. M. Gibson and G.-A. Paffenhofer
Asexual reproduction of the doliolid, Dolioletta gegenbauri Uljanin (Tunicata, Thaliacea)
J. Plankton Res., July 1, 2002; 24(7): 703 - 712.
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