Preference of the Herbivorous Marine Teleost Siganus canaliculatus for Different Macroalgae

查看全文 作　　者：YOU [1]Cuihong;ZENG [1]Fangui;WANG [1]Shuqi;LI [1]Yuanyou

机构地区：[1]Marine Biology Institute of Shantou University, Guangdong Provincial Key Laboratory of Marine Biotechnology

出　　处：《Journal of Ocean University of China》索引2014年第13卷第3期,共7页

基　　金：financially supported by grants from National Natural Science Foundation of China (No. 41276179);National Science and Technology Support Plan Project (No. 2012BAC07B05);Team Project of Natural Science Foundation of Guangdong Province (S2011030005257);Producing,Teaching and Research Cooperation Projects of Guangdong Province and Ministry of Education (No. 2011B090400039) 摘　　要：The decomposition of a large amount of unexploited macroalgal resource along the coast of China often results in heavy environmental pollution. In order to pave a way of using macroalgae as the dietary ingredient of rabbitfish Siganus canaliculatus, one of a few farmed herbivorous marine teleosts in China, its preference(feeding selectivity) for different macroalgae was determined in this study. Seven seaweed species abundantly inhabiting the coast of east Guangdong Province were exposed simultaneously to rabbitfish juveniles in laboratory(multiple-choice feeding) with their content and absolute intake assayed. It was found that the most preferred algae were Ulva prolifera, Gracilaria lemaneiformis and Chaetomorpha linum, less preferred algae were U. pertusa and Porphyra haitanensis, and least preferred ones were Sargassum fusiforme and Corallina sessilis. Such an order did not change when one to four relatively preferred seaweeds were removed. The preferred seaweeds were richer in protein and soluble sugar thus higher in energy than the least preferred. In addition, this fish was found to favor filamentous and flat algae rather than calcified ones. Accordingly, the richness of nutrients and morphological characteristics determined the preference of S. canaliculatus for tested macroalgae. 关键词：海藻资源硬骨鱼类偏好海洋宏观藻类鳍中国海岸营养成分

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Preference of the Herbivorous Marine Teleost Siganus canaliculatus for Different Macroalgae

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