NDLI: Acquisition of symbiotic dinoflagellates (Symbiodinium) by juveniles of the coral Acropora longicyathus

Content Provider	Springer Nature Link
Author	C. Gómez Cabrera, M. Ortiz, J. C. Loh, W. K. W. Ward, S. Hoegh Guldberg, O.
Copyright Year	2007
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.
Starting Page	219
Ending Page	226
Page Count	8
File Format	PDF
ISSN	07224028
Journal	Coral Reefs
Volume Number	27
Issue Number	1
e-ISSN	14320975
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-10-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Symbiodinium Acropora longicyathus Coral recruit Symbiont acquisition Symbiosis Dinoflagellate Oceanography Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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