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Acquisition of symbiotic dinoflagellates (Symbiodinium) by juveniles of the coral Acropora longicyathus
Gomez-Cabrera, M. del C., Ortiz, J. C., Loh, W. K. W., Ward, S. and Hoegh-Guldberg, O. (2008) Acquisition of symbiotic dinoflagellates (Symbiodinium) by juveniles of the coral Acropora longicyathus. Coral Reefs, 27 1: 219-226.
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| Author(s) |
Gomez-Cabrera, M. del C.
Ortiz, J. C.
Loh, W. K. W.
Ward, S.
Hoegh-Guldberg, O.
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| Title |
Acquisition of symbiotic dinoflagellates (Symbiodinium) by juveniles of the coral Acropora longicyathus
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| Formatted title |
Acquisition of symbiotic dinoflagellates (Symbiodinium) by juveniles of the coral Acropora longicyathus
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| Journal name |
Coral Reefs
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| Publication date |
2008
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| Year available |
2007
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| Volume number |
27
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| Issue number |
1
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| ISSN |
0722-4028
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| Start page |
219
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| End page |
226
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| Total pages |
8
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| Editor(s) |
P. K. Swart
R. E. Dodge
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| Place of publication |
New York
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| Publisher |
Springer
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| Collection year |
2008
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| Language |
eng
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| Subject |
270205 Genetic Development (incl. Sex Determination)
C1
770306 Integrated (ecosystem) assessment and management
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| Abstract |
Scleractinian corals may acquire Symbiodinium from their parents (vertically) or from the environment (horizontally). In the present study, adult colonies of the coral Acropora longicyathus from One Tree Island (OTI) on the southern Great Barrier Reef (Australia) acquired two distinct varieties of symbiotic dinoflagellates (Symbiodinium) from the environment. Adult colonies had either Symbiodinium from clade C (86.7%) or clade A (5.3%), or a mixture of both clades A and C (8.0% of all colonies). In contrast, all 10-day-old juveniles were associated with Symbiodinium from clade A, while 83-day-old colonies contained clades A, C and D even though they were growing at the same location. Symbiodinium from clade A were dominant in both 10- and 83-day-old juveniles (99 and 97% of all recruits, respectively), while clade D was also found in 31% of 83-day-old juveniles. Experimental manipulation also revealed that parental association (with clade A or C), or the location within the OTI reef, did not influence which clade of symbiont was acquired by juvenile corals. The differences between the genetic identity of populations of Symbiodinium resident in juveniles and adult A. longicyathus suggest that ontogenetic changes in the symbiosis may occur during the development of scleractinian corals. Whether or not these changes are due to host selective processes or differences in the physical environment associated with juvenile versus adult colonies remains to be determined.
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| Keyword(s) |
Symbiodinium
Acropora longicyathus
Coral recruit
Symbiont acquisition
Symbiosis
Dinoflagellate
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