Mitotic index and size of symbiotic algae in caribbean reef corals

Size and frequency of division were determined for zooxanthellae from nine scleractinian coral species collected in February, 1983 at Discovery Bay, Jamaica, from four depths over a 51 m bathymetric range. Mean diameters of zooxanthellae ranged from 6.4 to 12.6 mu m. The percentage of zooxanthellae...

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Veröffentlicht in:Coral reefs 1988-05, Vol.7 (1), p.29-36
Hauptverfasser: WILKERSON, F. P, KOBAYASHI, D, MUSCATINE, L
Format: Artikel
Sprache:eng
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Zusammenfassung:Size and frequency of division were determined for zooxanthellae from nine scleractinian coral species collected in February, 1983 at Discovery Bay, Jamaica, from four depths over a 51 m bathymetric range. Mean diameters of zooxanthellae ranged from 6.4 to 12.6 mu m. The percentage of zooxanthellae in a paired stage of cytokinesis (mitotic index or MI) was highly variable and ranged from 1.1% to 14.1%. Values measured in Eusmilia fastigiata and Dendrogyra cylindrus were greater than in the other corals. MI was higher in branch tips of Acropora cervicornis than in branch bases. Daily average MI was negatively correlated with mean cell diameter and for a majority of the coral species increased with habitat depth.
ISSN:0722-4028
1432-0975
DOI:10.1007/bf00301979