Integrated fatty acid and stable isotope niches reveal trophic connections among sympatric large-bodied sharks

This study used a novel approach combining stable isotope data and condensed multivariate fatty acid data to define comparative niche space and overlap of six sympatric sharks from the southwest Indian Ocean: <i>Galeocerdo cuvier</i>, <i>Sphyrna zygaena</i>, <i>S. lewini</i>, <i>Carcharias taurus</i>, <i>Carcharodon carcharias</i>, and <i>Carcharhinus obscurus</i>.本研究采用结合稳定同位素数据与浓缩多变量脂肪酸数据的创新方法，明确了西南印度洋海域六种同域分布鲨鱼的比较生态位空间及其种间重叠程度，所涉物种包括鼬鲨（Galeocerdo cuvier）、锤头双髻鲨（Sphyrna zygaena）、路氏双髻鲨（S. lewini）、沙虎鲨（Carcharias taurus）、大白鲨（Carcharodon carcharias）以及暗体真鲨（Carcharhinus obscurus）。