来自智利中部沿海地区的海鸟便中的微塑料
Sebastian Mendez-Sanhueza1, Mariett Torres2, Karla Pozo2
1Escuela de Medicina Veterinaria, Facultad Ciencias de la Naturaleza, Universidad San Sebastián, Concepción 4081339, Chile.
Animals : an open access journal from MDPI
|September 28, 2023
概括
塑料污染影响海洋鸟类,在多米尼加海和马格兰企中发现了微塑料. 这些微塑料颗粒,主要是聚烯和 rayon,表明在智利沿海环境的食物链中循环.
科学领域:
- 海洋生物学 海洋生物学
- 环境科学 环境科学
- 生态毒理学 生态毒理学
背景情况:
- 海洋塑料污染对海洋生态系统构成重大威胁.
- 塑料颗粒,特别是中塑料和微塑料,会对身体造成伤害,如海鸟的消化道阻塞.
- 之前的研究广泛报道了海洋物种消化道中微塑料的存在.
研究的目的:
- 调查智利三种海鸟便样本中微塑料颗粒的存在和组成.
- 为了确定多米尼加海和马格兰企所摄入的微塑料的类型和流行程度.
- 评估在Biobío地区沿海环境中的食物链中微塑料循环的潜力.
主要方法:
- 在智利Biobío地区的野生动物康复中心从多米尼加海 (n=14),马格兰企 (n=8) 和洪堡企 (n=1) 收集了便样本.
- 对便样本进行了微观分析,以识别和描述微塑料颗粒.
- 组成分析的重点是确定检测到的微纤维的聚合物类型.
主要成果:
- 在多米尼加海和马格兰企的便样本中检测到微纤维.
- 确定的主要聚合物成分是聚烯 (PP) 83%和 rayon 77%.
- 在洪堡企样本中没有报告微塑料.
结论:
- 微塑料颗粒存在于智利中部的沿海环境中,其在海鸟便中的检测证明了这一点.
- 鉴定到的微塑料表明,这些污染物正在被海洋物种摄入,并可能通过食物链循环.
- 需要进一步的研究,以充分了解微塑料污染的程度及其对该地区海洋野生动物的影响.
更多相关视频
05:31Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
Published on: July 28, 2018
16.1K
08:11Ecotoxicological Effects of Microplastics on Bird Embryo Development by Hatching without Eggshell
Published on: August 14, 2021
4.5K
相关概念视频
00:53Migration
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
01:28Microbial 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...