暖化引起的微塑料积累和鱼的生理毒性
Karen Beltran-de la Torre1, Jorge Arturo Vargas-Abúndez2, Ricardo Dzul-Caamal3
1Laboratorio de Ecotoxicología Acuática y Ecofisiología Animal de la Unidad Académica Estación El Carmen, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de Mexico, Ciudad del Carmen, Campeche, Mexico; Facultad de Ciencia y Tecnología, Universidad Simón Bolívar, Ciudad de México, Mexico.
概括
微塑料 (MP) 污染和气温上升共同危害小提琴. 高温可以减少MP的积累,但会恶化生理压力,显示环境影响的结合.
科学领域:
- 环境毒理学环境毒理学
- 海洋生物学 海洋生物学
- 甲动物生理学 甲动物生理学
背景情况:
- 生物体同时面临着微塑料 (MP) 污染和气候变化等环境压力因素.
- 了解综合压力因素的影响对于生态风险评估至关重要.
研究的目的:
- 为了研究微塑料暴露和高温对小提琴 Minuca rapax 的联合影响.
- 在不同的微塑料和温度条件下评估生理反应,抗氧化酶活性和脂质过氧化.
主要方法:
- 小提琴被暴露在24,27和30°C的聚乙烯微球 (0和2毫克L-1) 中.
- 测量的生理参数包括氧气消耗,抗氧化酶活性 (SOD,CAT,GPX) 和脂质过氧化 (LPO).
- 在,消化道和肌肉中量化了微塑料生物积累.
主要成果:
- 微塑料生物积累在上最高,在30°C下降.
- 高温 (30°C) 增加了暴露于微塑料的的氧气消耗.
- 在暴露于微塑料的中,抗氧化酶活性 (SOD,GPx) 在27°C时增加,而触酶活性和LPO在30°C时降低.
结论:
- 结合的微塑料暴露和温度压力加剧了 Minuca rapax. 的生理毒性.
- 温度影响微塑料的生物积累和生理反应.
- 评估多种压力因素对于了解微塑料污染对海洋生物的影响至关重要.
相关概念视频
Types of Toxins
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Freshwater Microbial Ecology
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic systems...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...


