Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis

Understanding the feeding habit of sea cucumber Apostichopus japonicus (Selenka) is crucial for improving aquaculture techniques of this commercially important species. In the present study, carbon stable isotopes were used as trophic tracers to investigate the uptake of different macroalgae, includ...

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Autores principales:	B Wen, QF Gao, SL Dong, YR Hou, HB Yu
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2016
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/8c39d14e76074c1091c69ae2a1c1717a
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spelling	oai:doaj.org-article:8c39d14e76074c1091c69ae2a1c1717a2021-11-11T11:01:23ZUtilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis1869-215X1869-753410.3354/aei00173https://doaj.org/article/8c39d14e76074c1091c69ae2a1c1717a2016-03-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v8/p171-178/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Understanding the feeding habit of sea cucumber Apostichopus japonicus (Selenka) is crucial for improving aquaculture techniques of this commercially important species. In the present study, carbon stable isotopes were used as trophic tracers to investigate the uptake of different macroalgae, including brown alga Sargassum muticum, red alga Gracilaria lemaneiformis and green alga Ulva lactuca by A. japonicus. A 70 d experiment was conducted to examine the carbon isotopic signatures of A. japonicus feeding on 6 different types of diets containing either pure powder of a single alga species or mixtures of 2 algae species. After the feeding trial, carbon isotope ratios (δ13C) of A. japonicus showed significant changes and reflected the isotopic compositions of corresponding diets. An isotope mixing model revealed the dietary preferences of A. japonicus between the 3 species of macroalgae, suggesting that green alga U. lactuca was the preferentially utilized food source of A. japonicus, followed by brown alga S. muticum. A. japonicus tended to reject red alga G. lemaneiformis in the presence of multiple macroalgae choices. Moreover, the specific growth rates of A. japonicus fed on S. muticum and U. lactuca were similar, but were both significantly higher than those fed on G. lemaneiformis, indicating the direct link between the feeding preferences and growth performance of A. japonicus.B WenQF GaoSL DongYR HouHB YuInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 8, Pp 171-178 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
spellingShingle	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 B Wen QF Gao SL Dong YR Hou HB Yu Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis
description	Understanding the feeding habit of sea cucumber Apostichopus japonicus (Selenka) is crucial for improving aquaculture techniques of this commercially important species. In the present study, carbon stable isotopes were used as trophic tracers to investigate the uptake of different macroalgae, including brown alga Sargassum muticum, red alga Gracilaria lemaneiformis and green alga Ulva lactuca by A. japonicus. A 70 d experiment was conducted to examine the carbon isotopic signatures of A. japonicus feeding on 6 different types of diets containing either pure powder of a single alga species or mixtures of 2 algae species. After the feeding trial, carbon isotope ratios (δ13C) of A. japonicus showed significant changes and reflected the isotopic compositions of corresponding diets. An isotope mixing model revealed the dietary preferences of A. japonicus between the 3 species of macroalgae, suggesting that green alga U. lactuca was the preferentially utilized food source of A. japonicus, followed by brown alga S. muticum. A. japonicus tended to reject red alga G. lemaneiformis in the presence of multiple macroalgae choices. Moreover, the specific growth rates of A. japonicus fed on S. muticum and U. lactuca were similar, but were both significantly higher than those fed on G. lemaneiformis, indicating the direct link between the feeding preferences and growth performance of A. japonicus.
format	article
author	B Wen QF Gao SL Dong YR Hou HB Yu
author_facet	B Wen QF Gao SL Dong YR Hou HB Yu
author_sort	B Wen
title	Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis
title_short	Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis
title_full	Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis
title_fullStr	Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis
title_full_unstemmed	Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis
title_sort	utilization of different macroalgae by sea cucumber apostichopus japonicus revealed by carbon stable isotope analysis
publisher	Inter-Research
publishDate	2016
url	https://doaj.org/article/8c39d14e76074c1091c69ae2a1c1717a
work_keys_str_mv	AT bwen utilizationofdifferentmacroalgaebyseacucumberapostichopusjaponicusrevealedbycarbonstableisotopeanalysis AT qfgao utilizationofdifferentmacroalgaebyseacucumberapostichopusjaponicusrevealedbycarbonstableisotopeanalysis AT sldong utilizationofdifferentmacroalgaebyseacucumberapostichopusjaponicusrevealedbycarbonstableisotopeanalysis AT yrhou utilizationofdifferentmacroalgaebyseacucumberapostichopusjaponicusrevealedbycarbonstableisotopeanalysis AT hbyu utilizationofdifferentmacroalgaebyseacucumberapostichopusjaponicusrevealedbycarbonstableisotopeanalysis
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Utilization of different macroalgae by sea cucumber Apostichopus japonicus revealed by carbon stable isotope analysis

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