Ontogenetic, Sexual, and Monthly Niche Segregation of Sepia esculenta in the Northern East China Sea Revealed by Stable Carbon and Nitrogen Isotopes

IF 2.6 3区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Marine Biotechnology Pub Date : 2024-08-05 DOI:10.1007/s10126-024-10352-6

Zhenfang Zhao, Guanyu Hu, Long Chen, Yingcong Chen, Fang Guo, Zhou Fang

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Abstract

Golden cuttlefish play a significant role in the food web of the East and Yellow Seas and are a valuable fishery resource in Chinese coastal waters. Samples of golden cuttlefish were obtained from the northern East China Sea between September 2021 and March 2022, and stable isotope methods were utilized in this study to examine the variations in the forage ecology of golden cuttlefish. Our findings reveal dynamic shifts in carbon and nitrogen stable isotopes (δ¹³C and δ¹⁵N), highlighting intricate foraging strategies tailored to growth and environmental changes. A notable trend emerges: an initial growth-linked rise in δ¹³C and δ¹⁵N enrichment, followed by seasonal fluctuations mirroring seasonal food availability. The ontogenetic niche evolution displays striking habitat shifts and trophic level escalation in small mantle length stages, transitioning to niche overlap and subtle trophic shifts later on. Sex-specific differences emerge, with females occupying higher trophic levels than males in most samples. This comprehensive study underscores the complexity and adaptability of golden cuttlefish feeding ecology, inviting further inquiry into their intricate relationships within the marine ecosystem.

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稳定碳和氮同位素揭示东海北部鮨科鱼类的个体发育、性别和月度生态位分化

金乌贼在东海和黄海的食物网中发挥着重要作用，是中国近海的宝贵渔业资源。本研究于2021年9月至2022年3月期间在中国东海北部海域采集了金乌贼样本，并利用稳定同位素方法研究了金乌贼觅食生态的变化。我们的发现揭示了碳和氮稳定同位素（δ13C和δ15N）的动态变化，突显了适应生长和环境变化的复杂觅食策略。一个值得注意的趋势是：δ13C和δ15N富集最初与生长相关，随后出现季节性波动，反映了季节性食物供应情况。在套管长度较小的阶段，生态位演化显示出显著的生境变化和营养级升级，随后过渡到生态位重叠和微妙的营养级变化。性别差异显现出来，在大多数样本中，雌性比雄性占据更高的营养级。这项综合研究强调了金乌贼摄食生态的复杂性和适应性，有助于进一步研究它们在海洋生态系统中的复杂关系。

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来源期刊

Marine Biotechnology 工程技术-海洋与淡水生物学

CiteScore

4.80

自引率

3.30%

发文量

审稿时长

2 months

期刊介绍： Marine Biotechnology welcomes high-quality research papers presenting novel data on the biotechnology of aquatic organisms. The journal publishes high quality papers in the areas of molecular biology, genomics, proteomics, cell biology, and biochemistry, and particularly encourages submissions of papers related to genome biology such as linkage mapping, large-scale gene discoveries, QTL analysis, physical mapping, and comparative and functional genome analysis. Papers on technological development and marine natural products should demonstrate innovation and novel applications.