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Acropora hoeksemai : ウィキペディア英語版 | Acropora hoeksemai
''Acropora hoeksemai'' is a species of acroporid coral that was first described by Dr. Carden Wallace in 1997. Found in shallow reefs in a marine environment, it is found at depths of . It is listed as a vulnerable species on the IUCN Red List, and has a decreasing population. It is common, listed on Appendix II of CITES, and is found over a large range. ==Description== ''Acropora hoeksemai'' is found in colonies that can be wide, made of branches joined in the centre of the structure.〔(【引用サイトリンク】title=''Acropora hoeksemai'' Fact Sheet. Wallace, 1997 )〕 Some larger colonies have been observed at over .〔 It is a light brown, white, or cream colour, and the branch ends are upturned, except on the outside of the structure.〔〔 These branches are not regular, and contain both axial and radial corallites. Axial corallites can have diameters of between .〔 Radial corallites are tube-shaped, neat, orderly, and they are the same sizes. They contain basic spinules.〔〔 The branches may grow to lengths of up to and diameters of between . It is found in marine environments in shallow reefs at depths of , and also on slopes and walls of reefs.〔(【引用サイトリンク】title=''Acropora hoeksemai'' )〕 It reaches maturity at between three and eight years, and it is believed to survive for more than ten years.〔 It is composed of aragonite (calcium carbonate).〔(【引用サイトリンク】title=Measurements and facts about ''Acropora hoeksemai'' )〕 When grown in captivity it reaches lengths of up to .〔(【引用サイトリンク】title=''Acropora hoeksemai'' )〕 ''A. hoeksemai'' looks similar to ''Acropora valenciennesi'' and species of the ''Acropora divaricata'' group.〔
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