Feeding habits of juvenile <i>Siganus fuscescens</i> in a subtropical seagrass meadow estimated by rearing experiments and dual stable isotope analysis
Feeding habits of juvenile <i>Siganus fuscescens</i> in a subtropical seagrass meadow estimated by rearing experiments and dual stable isotope analysis
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通过饲养实验和双稳定同位素分析估算亚热带海草甸幼鱼的食性
DOI：
10.11233/aquaculturesci.68.163
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发表时间：
2020
影响因子：
--
通讯作者：
河村 知彦
中科院分区：
文献类型：
--
作者：
山田 秀秋;今 孝悦;中本 健太;早川 淳;南條 楠土;河村 知彦
用在亚热带海草草甸采集的新定居的兔子鱼进行饲养试验。取食磷虾和海草(Thalassia Hemprichii)的处理组在第92天的平均标准长度显著大于仅取食磷虾的兔鱼。混合模型表明，在磷虾和海草饲养的处理中，海草的贡献率为0.7-15%(95%可信区间)。海草对野生兔鱼的贡献率与养殖鱼相当。这些结果表明，海草作为能量来源对亚热带海草草甸幼兔鱼的贡献相对较小。
Rearing experiments were conducted using newly settled rabbitfish collected in subtropical seagrass meadows. Mean standard length on day 92 in the treatment fed on krill and seagrass (Thalassia hemprichii) was significantly larger than those of rabbitfish fed on only krill. The mixing models demonstrated that contribution rates of seagrass in the treatment fed on krill and seagrass was 0.7-15%(95% confidence interval). Contribution rates of seagrass for wild rabbitfish were equivalent to those of reared fish. These results suggest that the contribution of seagrass as an energy source is relatively small for juvenile rabbitfish in subtropical seagrass meadows.