Growth characteristics and growth rate estimation of Japanese precious corals

Luan, NT; Rahman, MA; Maki, T; Iwasaki, N; Hasegawa, H

Growth characteristics and growth rate estimation of Japanese precious corals

Luan, NT Rahman, MA

Maki, T Iwasaki, N Hasegawa, H

Permalink

Publication Type:: Journal Article
Citation:: Journal of Experimental Marine Biology and Ecology, 2013, 441 pp. 117 - 125
Issue Date:: 2013-03-01

Closed Access

	Filename	Description	Size
	2012001248OK.pdf		1.85 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Luan, NT	en_US
dc.contributor.author	Rahman, MA https://orcid.org/0000-0002-8065-0286	en_US
dc.contributor.author	Maki, T	en_US
dc.contributor.author	Iwasaki, N	en_US
dc.contributor.author	Hasegawa, H	en_US
dc.date.issued	2013-03-01	en_US
dc.identifier.citation	Journal of Experimental Marine Biology and Ecology, 2013, 441 pp. 117 - 125	en_US
dc.identifier.issn	0022-0981	en_US
dc.identifier.uri	http://hdl.handle.net/10453/27872
dc.description.abstract	The petrographic method has been a popular technique for estimating the ages and growth rates of corals based on growth ring density in their axial skeleton. The organic matrix staining (OMS) method, a modified method of petrographic method, has also been used for measuring age and growth rate of the Mediterranean red coral (Corallium rubrum) by staining the organic matrix (OM) in the calcite skeleton. Since the OMS method is based on the concentration of OM in the coral skeleton, this method may not be suitable for coral species with low OM content. In the presnt study, growth characteristics and growth rates of three Japanese precious corals (JPCs; Paracorallium japonicum, Corallium elatius and Corallium konojoi) were determined based on the principles of the petrographic method using a high resolution VHX-1000 digital microscope, termed as VHX-1000 hereafter, without staining the OM in the axial skeleton. Compared to the OM-stained cross-sections (slabs), growth rings in un-stained slabs of the Japanese red coral (P. japonicum) were more clearly visible with the VHX-1000. This may be due to low concentration of OM in the coral skeleton. Growth rate of JPCs differ significantly depending on coral species, habitat, and environmental conditions. Diametric and linear growth rates of the Japanese red coral (P. japonicum) were slower (0.20±0.08-0.27±0.01 and 2.22±0.82-6.66±5.52mmyr-1, respectively) than the Japanese pink (C. elatius; 0.30±0.04 and 2.76±2.09mmyr-1, respectively) and white (C. konojoi; 0.44±0.04 and 7.60±0.75mmyr-1, respectively) corals. In addition, the diametric growth rate of the Japanese red coral (P. japonicum) is slower (0.24±0.05-0.44±0.04mmyr-1) than the Mediterranean red coral (C. rubrum; 0.20-0.62±0.19mmyr-1). © 2013 Elsevier B.V.	en_US
dc.relation.ispartof	Journal of Experimental Marine Biology and Ecology	en_US
dc.relation.isbasedon	10.1016/j.jembe.2013.01.012	en_US
dc.subject.classification	Marine Biology & Hydrobiology	en_US
dc.title	Growth characteristics and growth rate estimation of Japanese precious corals	en_US
dc.type	Journal Article
utslib.citation.volume	441	en_US
utslib.for	0602 Ecology	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	06 Biological Sciences	en_US
utslib.for	07 Agricultural and Veterinary Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	441	en_US

Abstract:

The petrographic method has been a popular technique for estimating the ages and growth rates of corals based on growth ring density in their axial skeleton. The organic matrix staining (OMS) method, a modified method of petrographic method, has also been used for measuring age and growth rate of the Mediterranean red coral (Corallium rubrum) by staining the organic matrix (OM) in the calcite skeleton. Since the OMS method is based on the concentration of OM in the coral skeleton, this method may not be suitable for coral species with low OM content. In the presnt study, growth characteristics and growth rates of three Japanese precious corals (JPCs; Paracorallium japonicum, Corallium elatius and Corallium konojoi) were determined based on the principles of the petrographic method using a high resolution VHX-1000 digital microscope, termed as VHX-1000 hereafter, without staining the OM in the axial skeleton. Compared to the OM-stained cross-sections (slabs), growth rings in un-stained slabs of the Japanese red coral (P. japonicum) were more clearly visible with the VHX-1000. This may be due to low concentration of OM in the coral skeleton. Growth rate of JPCs differ significantly depending on coral species, habitat, and environmental conditions. Diametric and linear growth rates of the Japanese red coral (P. japonicum) were slower (0.20±0.08-0.27±0.01 and 2.22±0.82-6.66±5.52mmyr-1, respectively) than the Japanese pink (C. elatius; 0.30±0.04 and 2.76±2.09mmyr-1, respectively) and white (C. konojoi; 0.44±0.04 and 7.60±0.75mmyr-1, respectively) corals. In addition, the diametric growth rate of the Japanese red coral (P. japonicum) is slower (0.24±0.05-0.44±0.04mmyr-1) than the Mediterranean red coral (C. rubrum; 0.20-0.62±0.19mmyr-1). © 2013 Elsevier B.V.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/27872