Use of X-radiographs to distinguish members of the Montastraea annularis reef-coral species complex

Holcomb, M., Pandolfi, J. M., Macintyre, I. G. and Budd, A. F. (2004) Use of X-radiographs to distinguish members of the Montastraea annularis reef-coral species complex. Hydrobiologia, 530-31 1 - 3: 211-222. doi:10.1007/s10750-004-2652-x


Author Holcomb, M.
Pandolfi, J. M.
Macintyre, I. G.
Budd, A. F.
Title Use of X-radiographs to distinguish members of the Montastraea annularis reef-coral species complex
Journal name Hydrobiologia   Check publisher's open access policy
ISSN 0018-8158
1573-5117
Publication date 2004-01-01
Sub-type Article (original research)
DOI 10.1007/s10750-004-2652-x
Volume 530-31
Issue 1 - 3
Start page 211
End page 222
Total pages 12
Editor Koens, Marten
Place of publication Netherlands
Publisher Springer
Language eng
Subject C1
279901 Global Change Biology
780105 Biological sciences
Abstract Recent work suggests the Montastraea annularis species complex consists of at least three species, which can be distinguished qualitatively in the field using features related to colony growth (e.g. overall growth form. bumpiness, growth along the colony edge). However, when whole colonies are not available and surfaces are eroded, identification becomes problematic when relying on such characteristics. Characters based on internal skeletal structures are less prone to loss due to taphonomic processes. Previous work has shown that internal corallite architectural features measured in transverse thin sections can be used to distinguish species. To determine whether internal colony-level features measured on X-radiographs can be used. eight characters related to corallite budding and accretionary growth were measured on specimens representing three modern members of the M. annularis species complex (M. annularis, M. flaveolata and M. franksi), as well as two fossil forms (columnar and organ-pipe). All eight characters showed significant differences among species. Discriminant function analysis using seven of these characters resulted in distinct species groupings In canonical scores plots and a 100% classification success for specimens from Panama. These results suggest that measurements made on X-radiographs provide a useful tool for quantitatively distinguishing members of the M. annularis complex as well as between other massive reef corals.
Keyword Marine & Freshwater Biology
Montastraea
Coral Reef
Pleistocene
Coral Banding
Species Complex
Building Coral
Growth-rates
Scleractinia
Colonies
Jamaica
Climate
Form
Bay
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 15:17:44 EST