Bulk tissue and amino acid stable isotope analyses reveal global ontogenetic patterns in ocean sunfish trophic ecology and habitat use
Bulk tissue and amino acid stable isotope analyses reveal global ontogenetic patterns in ocean sunfish trophic ecology and habitat use
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体组织和氨基酸稳定同位素分析揭示了海洋翻车鱼营养生态和栖息地利用的全球个体发育模式
DOI：
10.3354/meps13166
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发表时间：
2020
影响因子：
2.5
通讯作者：
Chris Harrod
中科院分区：
文献类型：
--
作者：
N. Phillips;E. Smith;S. Newsome;J. Houghton;Carol D. Carson;J. Alfaro‐Shigueto;J. Alfaro‐Shigueto;Jeffrey C. Mangel;Lawrence E. Eagling;L. Kubicek;Chris Harrod
5海洋翻车鱼（翻车鱼属）在很大程度上被认为是专门吃冰淇淋的动物，然而最近的研究表明，它们经历了一个不寻常的生活史转变。在这项研究中，7分析了大量和氨基酸氮（δ 15 N）和碳（δ 13 C）稳定同位素比值8，以详细了解太阳鱼营养生态学和栖息地利用的个体发育变异，并评估是否有任何观察到的模式在世界各地的10个种群中是共同的。通过这种综合方法，在海洋翻车鱼的营养生态学和栖息地利用中发现了明显的个体发育转变11，表明随着鱼的长大，从更多的底栖到中上层来源的猎物在连续尺度上发生变化的复杂的营养作用12。数据还显示了强大的人口结构，有可能使用同位素分析评估不同群体之间的连通性。综合起来，15这些对翻车鱼生态的新见解可能对养护管理16小组有价值，表明其广泛的生态作用、独特的种群聚集和可能的跨大西洋运动。这些结果表明，目前大量的海洋太阳鱼副渔获物18可能具有深远的生态影响，并进一步强调了对这一脆弱属进行保护管理的日益增长的需求。20
5 Ocean sunfish (Mola spp.) have largely been considered as obligate gelativores, however 6 recent research has suggested that they undergo an unusual life history shift. In this study 7 analyses of bulk and amino acid nitrogen (δ15N) and carbon (δ�13C) stable isotope ratios 8 were employed to provide detailed insight into ontogenetic variation in sunfish trophic 9 ecology and habitat-use and to assess whether any observed patterns were common to 10 populations around the world. Through this combined approach, a clear ontogenetic shift 11 was identified in both trophic ecology and habitat-use of ocean sunfish indicating a complex 12 trophic role that changes from more benthic to pelagic-derived prey on a continuous scale 13 as fish grow larger. The data also revealed strong population structuring with potential to 14 assess connectivity between distinct groupings using isotopic analysis. When combined, 15 these new insights into sunfish ecology may be of value to conservation management 16 teams, indicating a broad ecological role, distinct population clustering and possible trans17 Atlantic movements. These results suggest that the current mass bycatch of ocean sunfish 18 may have far-reaching ecological implications and further highlights the growing need for 19 conservation management of this vulnerable genus. 20
影响因子：
2.7
作者：
Nielsen, Jens M.;Popp, Brian N.;Winder, Monika
通讯作者：
Winder, Monika