Ingestion rates of Limnomysis benedeni, an invasive omnivorous crustacean feeding on various plankton species

These data support the manuscript “Temperature-driven diet shift in an invasive omnivorous crustacean feeding on plankton” currently under review at Limnology and Oceanography Letters. The dataset includes the source data used for analyses presented in the manuscript. Rising temperatures from global climate change alter the physiology of ectotherms, potentially shifting omnivores’ diets toward increased herbivory. However, the relevance and generality of these dietary shifts remain poorly understood in multispecies context due to a lack of studies using live prey. To address this gap, we conducted laboratory grazing experiments with an invasive mysid Limnomysis benedeni. Mysids were offered different combinations of autotrophic prey (Cryptomonas sp.) and heterotrophic prey (the ciliate Coleps sp., the rotifer Brachionus calyciflorus, and juvenile Daphnia magna) differing in body size across three temperature treatments (16, 23, and 30 °C). The dataset contains measurements of prey abundances before and after the experiment, from which prey-specific ingestion rates, autotrophic-to-heterotrophic ingestion ratios, and total ingested carbon biomass were calculated. These data enable the testing of temperature-dependent changes in feeding allocation between autotrophic and heterotrophic prey by an invasive omnivorous consumer.本数据集支撑已投往《湖沼学与海洋学快报（Limnology and Oceanography Letters）》待审的论文《摄食浮游生物的入侵性杂食甲壳类动物的温度驱动饮食转变》，其中包含该论文分析环节所使用的全部原始源数据。 全球气候变化引发的气温升高会改变变温动物（ectotherms）的生理机能，可能推动杂食动物的饮食向更高比例的植食性方向转变。然而，由于目前缺乏以活体猎物开展的相关研究，这类饮食转变在多物种群落背景下的相关性与普遍性仍未得到充分阐明。为填补这一研究空白，我们针对入侵性贝氏湖糠虾（Limnomysis benedeni）开展了室内牧食实验。实验设置16℃、23℃、30℃三个温度处理组，为受试糠虾提供不同组合的自养猎物（隐藻属（Cryptomonas sp.））与异养猎物：包括纤毛虫鞘居虫属（Coleps sp.）、萼花臂尾轮虫（Brachionus calyciflorus）以及大型溞幼体（Daphnia magna），各类猎物的体型存在差异。本数据集包含实验前后的猎物丰度测量数据，基于该数据可计算得到猎物特异性摄食率、自养与异养摄食比率以及总摄入碳生物量。本数据集可用于验证入侵性杂食消费者在自养与异养猎物间的摄食分配随温度变化的规律。