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JPR Advance Access originally published online on May 11, 2005
Journal of Plankton Research 2005 27(5):495-501; doi:10.1093/plankt/fbi026
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org.

SHORT COMMUNICATION

Colony growth and evidence for colony multiplication in Phaeocystis pouchetii (Prymnesiophyceae) isolated from mesocosm blooms

Stuart J. Whipple1,*,{dagger}, Bernard C. Patten2 and Peter G. Verity1

1 Skidaway Institute of Oceanography, 10 Ocean Science Circle, Savannah, GA 31411, USA and 2 Institute of Ecology, University of Georgia, Athens, GA 30602, USA {dagger} Present Address: Institute of Ecology, University of Georgia, Athens, GA 30602, USA

* Corresponding Author: sjwhipple{at}earthlink.net

Received February 15, 2005; accepted in principle March 24, 2005; accepted for publication April 28, 2005; published online May 11, 2005
Communicating editor: K. J. Flynn

Using well plates of Phaeocystis pouchetii colonies isolated from experimental mesocosms in western Norway, increases in colony size and division were documented. Median longest linear dimensions increased 0–7 µm h–1; literature Phaeocystis globosa values are 0.9–4.7 µm h–1. Ten to twelve percent of colonies divided at rates of 0.21–0.28 divisions day–1. Daughter colonies were 100 µm smaller than mother colonies. Colonies delayed 3.5–4.9 days to first division, compared with literature values of 4–5 days for P. globosa. This study provides the first experimental evidence for colony division of wild P. pouchetii.


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P. G. Verity, S. J. Whipple, J. C. Nejstgaard, and A.-C. Alderkamp
Colony size, cell number, carbon and nitrogen contents of Phaeocystis pouchetii from western Norway
J. Plankton Res., April 1, 2007; 29(4): 359 - 367.
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