Variations of antioxidant efficiecy and presence of endosymbiotic diatoms in the Antarctic porifera Haliclona dancoi

The role of endosymbiotic diatoms as pro-oxidant stressors in porifera has been investigated in the Antarctic sponge Haliclona dancoi in which the presence of diatoms is influenced by marked seasonal variations during the austral summer. Both chlorophaeopigments and frustules were absent in sponge t...

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Bibliographic Details
Published in:Marine Environmental Research
Main Authors: REGOLI F, CHIERICI E, CERRANO C, SCHIAPPARELLI S, TOTTI C, BAVESTRELLO G., NIGRO, MARCO
Other Authors: Regoli, F, Nigro, Marco, Chierici, E, Cerrano, C, Schiapparelli, S, Totti, C, Bavestrello, G.
Format: Article in Journal/Newspaper
Language:English
Published: 2004
Subjects:
Antarctic
Austral
The Antarctic
Antarc*
Online Access:http://hdl.handle.net/11568/87076
https://doi.org/10.1016/j.marenvres.2004.03.055
http://www.sciencedirect.com/science/article/pii/S0141113604001060
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Summary:The role of endosymbiotic diatoms as pro-oxidant stressors in porifera has been investigated in the Antarctic sponge Haliclona dancoi in which the presence of diatoms is influenced by marked seasonal variations during the austral summer. Both chlorophaeopigments and frustules were absent in sponge tissues sampled in early November at the beginning of the summer and increased from the mid of December with slightly shifted temporal trends. The efficiency of antioxidant defenses in the sponge showed a marked response to symbionts with clearly enhanced values corresponding to the peak of diatoms.

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