Four sympatric ecomorphs – detritivorous, predator, benthivorous, and phytophagous – of the cyprinid fish Schizopygopsis stolickai were recorded in a young Pamir lake, Lake Yashilkul, located at > 3,700 m above sea level. Some ecomorphs are divergent in diet, gut length, and stable isotopes of δ 13 C and δ 15 N. The predator ecomorph has a shorter gut, and is the most enriched in δ 15 N (14.5‰), indicating its occupation of the highest trophic level. The lowest δ 15 N values (11.1‰) were detected in the detritivorous ecomorph. There was significant overlap in the diet of some individuals belonging to different ecomorphs, reflecting high trophic plasticity despite ongoing trophic specialization.

中文翻译：

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帕米尔山年轻湖泊中裂殖藻（鲤科）同域生态形态的营​​养资源分配：初步结果

鲤科鱼类 Schizopygopsis stolickai 的四种同域生态形态——食腐性、捕食性、底栖性和植食性——被记录在一个年轻的帕米尔湖中，Yashilkul 湖，位于海拔 3,700 米以上。一些生态形态在饮食、肠道长度和 δ 13 C 和 δ 15 N 的稳定同位素方面存在差异。捕食性生态形态的肠道较短，其中 δ 15 N 含量最高（14.5‰），表明其占据最高的营养级。最低的 δ 15 N 值 (11.1‰) 在食腐性生态形态中检测到。一些属于不同生态形态的个体的饮食存在显着重叠，这反映了尽管正在进行营养专业化，但营养可塑性很高。