Towards an Ecological Understanding of Dinoflagellate Cyst Functions.
The life cycle of many dinoflagellates includes at least one nonflagellated benthic stage (cyst). In the literature, the different types of dinoflagellate cysts are mainly defined based on morphological (number and type of layers in the cell wall) and functional (long- or short-term endurance) differences. These characteristics were initially thought to clearly distinguish pellicle (thin-walled) cysts from resting (double-walled) dinoflagellate cysts. The former were considered short-term (temporal) and the latter long-term (resting) cysts. However, during the last two decades further knowledge has highlighted the great intricacy of dinoflagellate life histories, the ecological significance of cyst stages, and the need to clarify the functional and morphological complexities of the different cyst types. Here we review and, when necessary, redefine the concepts of resting and pellicle cysts, examining both their structural and their functional characteristics in the context of the life cycle strategies of several dinoflagellate species.
Spanish Oceanographic Institute, Subida a Radio Faro 50, Vigo 36390, Spain. isabel.bravo@vi.ieo.es.
Isabel
I
Bravo
Spanish Oceanographic Institute, Subida a Radio Faro 50, Vigo 36390, Spain. rosa.figueroa@biol.lu.se.|Aquatic Ecology, Department of Biology, Lund University, Lund 22362, Sweden. rosa.figueroa@biol.lu.se.
Rosa Isabel
RI
Figueroa
cysts; dinoflagellate life cycle strategy; dinoflagellate reproduction; pellicle cysts; resting cysts
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