Dataset on microplastic presence, bioconcentration factor and health indices of four commercial fish species in the Lagos Lagoon, Nigeria

Our research hypothesized microplastic accumulation in fish tissues, probable microplastics bioconcentration factor greater than 1 and subsequent impact on condition factor of the fish species across the dry and wet seasons in the Lagos Lagoon, Nigeria. The data set describes microplastic concentrations in commercially available fish species in the Lagos Lagoon, Nigeria. The bioconcentration factor of microplastics and the health index/condition factor of the fish species were computed using the Microsoft office Excel 2016. This dataset also presents this information across the two major seasons experienced in Nigeria: the dry and the wet seasons. 128 fish samples were collected from four different sampling points during the dry and wet seasons. Microplastics were isolated from fish tissues and were analysed for the identification of different polymer types. Condition factor of the fish species were analysed using the formula: 100 ×weight/(Length^3 ). Bioconcentration factor of microplastics in each species was calculated as: (Concentration of microplastics in fish tissue)/(Concentration of microplastics in water). Microplastics were isolated from the fish tissues by tissue digestion in potassium hydroxide (1:4, w/v) with incubation in 40 ℃ for 3 days and extracted by ultrafiltration. Extracted microplastics were identified using the Fourier Transform Infrared spectrometer. The health index/condition factor of the fish species and bioconcentration factor of microplastics were computed using the Microsoft Office Excel 2016. The importance of this data set is that provides an insight into the presence of microplastics in the visceral tissues and subsequent health indices of four commercial fish species in the Lagos Lagoon. Furthermore, ecotoxicologists and environmental protection agencies will find the data useful for toxicological studies on edible fish species exposed to environmentally relevant concentrations of microplastics. This data set is useful for further safety investigations into the risks posed to the physiological functions of aquatic organisms due to microplastic ingestion.

本研究提出假设：在尼日利亚拉各斯潟湖（Lagos Lagoon）的旱季与雨季中，鱼类组织内存在微塑料（microplastic）累积，其微塑料生物浓缩因子（bioconcentration factor）大概率大于1，并会对该水域鱼类的条件因子产生后续影响。本数据集记录了尼日利亚拉各斯潟湖市售鱼类的微塑料浓度。研究人员采用Microsoft Office Excel 2016计算了鱼类的微塑料生物浓缩因子与健康指数/条件因子。本数据集同时涵盖了尼日利亚两大季节——旱季与雨季的相关数据。研究期间于旱季与雨季从4个不同采样点共采集128份鱼类样本。研究人员从鱼类组织中分离微塑料，并对不同聚合物类型进行鉴定。鱼类条件因子采用公式：100×体重/(体长³)进行计算。各物种的微塑料生物浓缩因子按如下公式计算：(鱼类组织中微塑料浓度)/(水体中微塑料浓度)。研究通过氢氧化钾（potassium hydroxide，1:4，质量体积比）组织消解、40℃孵育3天，结合超滤法从鱼类组织中分离微塑料。采用傅里叶变换红外光谱仪（Fourier Transform Infrared spectrometer）对提取的微塑料进行鉴定。研究人员再次通过Microsoft Office Excel 2016完成了鱼类健康指数/条件因子与微塑料生物浓缩因子的计算。本数据集的价值在于，可为拉各斯潟湖4种市售鱼类内脏组织中的微塑料存在情况及其后续健康指数变化提供研究视角。此外，生态毒理学家与环境保护机构可利用本数据集开展针对暴露于环境相关浓度微塑料的食用鱼类的毒理学研究。本数据集还可用于进一步开展微塑料摄入对水生生物生理功能造成风险的安全性调查。

搜集汇总

背景与挑战

背景概述

该数据集聚焦于尼日利亚拉各斯潟湖四种商业鱼类中微塑料的存在、生物浓缩因子及健康指数。它覆盖干湿两季，包含128个样本，通过实验方法分析微塑料浓度和聚合物类型，并计算鱼类的条件因子和微塑料生物浓缩因子。数据集旨在为微塑料对水生生物的生态毒理影响提供基础数据，支持环境安全研究。