The incredible range of morphological plasticity present in scleractinian corals has confused the taxonomy of the group, prompting the introduction of "ecomorphs" to explain the observed correlation between local environmental conditions and phenotypic variation. Pocillopora damicornis (Linnaeus, 1758) represents one of the best known examples of eco-phenotypic variation in scleractinian corals with a variety of forms and reproductive strategies reported across its global distribution range. Here, we reconstruct genealogical relationships of P. damicornis colonies collected from thirteen locations along the East Australian coast to examine the relationship between genetic and phenotypic diversity in this species. Haplotype networks computed from two mitochondrial DNA regions (CR, ORF) indicate that the range of morphotypes observed within this taxon fall into at least five genetically distinct mitochondrial lineages. Nuclear (HSP70, ITS2) haplowebs on the other hand recover sharp genetic discontinuities among three of the morphological groups. We conclude that P. damicornis from Eastern Australia constitutes a cryptic species complex. The misinterpretation of taxonomical units within P. damicornis may well explain its perceived variation in the ecology, biology and life history across its range.

Item Type:	Refereed Article
Keywords:	coral, genetics, biodiversity
Research Division:	Biological Sciences
Research Group:	Ecology
Research Field:	Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:	Environmental Management
Objective Group:	Marine systems and management
Objective Field:	Marine biodiversity
UTAS Author:	Schmidt-Roach, S (Mr Sebastian Schmidt-Roach)
UTAS Author:	Miller, KJ (Dr Karen Miller)
ID Code:	80181
Year Published:	2013 (online first 2012)
Web of Science® Times Cited:	100
Deposited By:	Sustainable Marine Research Collaboration
Deposited On:	2012-10-24
Last Modified:	2016-09-30
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