An accurate description of trophic interactions is crucial to understand ecosystem functioning and sustainably manage marine ecosystems exploitation. Carbon and nitrogen stable isotopes were coupled with stomach content analyses to investigate whiting (Merlangius merlangus, Linnaeus, 1758) feeding behavior in the Eastern English Channel and Southern North Sea. Whiting juveniles and adults were sampled in autumn and winter to investigate both ontogenetic and seasonal changes. In addition, queen scallops (Aequipecten opercularis) samples were collected along with fish to be used as isotopic benthic baseline. Results indicated an ontogenetic diet change from crustaceans to fish and cephalopods. In autumn, δ¹⁵N values generally increased with fish size while in winter, a decrease of δ¹⁵N values with fish size was observed, as a potential result of spatial variation in baseline δ¹⁵N values. In winter, a nutrient-poor period, an increase in feeding intensity was observed, especially on the copepod Temora longicornis. This study provides further insights into whiting trophic ecology in relation to ontogenetic and seasonal variations, and it confirms the importance of combining several trophic analysis methods to understand ecosystem functioning.

营养相互作用的准确描述对于理解生态系统功能和可持续管理海洋生态系统开发至关重要。碳和氮稳定同位素与胃内容物分析相结合，以调查东部英吉利海峡和南北海地区的whi鱼（Merlangius merlangus，Linnaeus，1758）的进食行为。在秋季和冬季对白鲸幼体和成虫进行了采样，以调查个体发生和季节变化。此外，还收集了女王扇贝（Aequipecten opercularis）样品和鱼类，以用作同位素底栖生物基线。结果表明从甲壳动物到鱼类和头足类动物的饮食发生了变化。在秋季，Δ ¹⁵的n值通常与鱼的大小增加，而在冬季，的δ的减少¹⁵，观察到n，其中鱼的大小的值，如在δ基线空间变化的电势结果¹⁵的N值。在冬季，即营养不足的时期，尤其是在the足类长爪em（Temora longicornis）上，摄食强度增加了。这项研究为了解与个体发育和季节变化有关的白白营养生态学提供了进一步的见解，并且证实了结合多种营养分析方法以了解生态系统功能的重要性。