Microplastics (MPs) have recently been detected as emergent pollutants in the Ethiopian rift valley lakes located close to rapidly expanding towns. We provide the first study of MPs ingestion of commercial fish species from Lake Hawassa, Ethiopia: Catfish (Clarias gariepinus) and Nile Tilapia (Oreochromis niloticus). A total of 60 individual fish species was collected from three sampling sites of lake Hawassa in October 2020. Across all sampling sites, there was a significant difference in ingested MPs between benthic omnivore catfish and pelagic phytoplanktivorous Tilapia (χ = 15.864, p < 0.001). The most common size of ingested MPs (84.6%) was 0.5-1 mm, with fragments (59.5%) dominating, followed by fibers (25.4%). On average, 4.03 ± 1.33 MPs with sizes ranging between 60 μm and 10.53 mm were detected per individual. White and yellow MPs were particularly numerous, accounting for 36.8% and 26.4% of the total, respectively. Because Lake Hawassa's fishery is so significant, the potential impact of MP pollution on the lake biota in general, and economically valuable fish species in particular, deserves attention, additional research, and, if possible, early mitigation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11356-024-34432-1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Impact of polyvinyl chloride nano-plastics on the biochemical status of Oreochromis niloticus under a predicted global warming scenario.
Sci Rep
January 2025
Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt.
Plastic pollution and global warming are widespread issues that lead to several impacts on aquatic organisms. Despite harmful studies on both subjects, there are few studies on how temperature increases plastics' adverse effects on aquatic animals, mainly freshwater species. So, this study aims to clarify the potential impact of temperature increases on the toxicological properties of polyvinyl chloride nano-plastics (PVC-NPs) in Nile tilapia (Oreochromis niloticus) by measuring biochemical and oxidative biomarkers.
View Article and Find Full Text PDFGenomes reveal pervasive distant hybridization in nature among cyprinid fishes.
Gigascience
January 2025
State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha 410081, China.
Background: Genomic data have unveiled a fascinating aspect of the evolutionary past, showing that the mingling of different species through hybridization has left its mark on the histories of numerous life forms. However, the relationship between hybridization events and the origins of cyprinid fishes remains unclear.
Results: In this study, we generated de novo assembled genomes of 8 cyprinid fishes and conducted phylogenetic analyses on 24 species.
Arithmetic normalisation models for the effects of lipid on carbon stable isotope values in silver carp () tissue.
Isotopes Environ Health Stud
January 2025
Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, USA.
Invasive silver carp () threaten Mississippi River basin ecosystems due to their ability to outcompete native species. Stable carbon (δC) and nitrogen (δN) isotope analysis has been used to study how silver carp impact native ecosystems, but lipids in fish tissues commonly bias their δC values. Chemical lipid extraction and mathematical equations that normalise δC values for lipid content can account for this bias, but have not been assessed for silver carp.
View Article and Find Full Text PDFTerrestrial friction-reducing properties of mucus and scale anisotropy in the amphibious Northern Snakehead (Channa argus).
Integr Comp Biol
January 2025
Department of Biology, Henson School of Science and Technology, Salisbury University, Salisbury, MD 21801, USA.
The mucus coating around a fish's body is essential to its survival. It contains antimicrobial properties, aids in drag reduction, and protects against physical damage. It is versatile in the aquatic environment but little is known about the role of mucus in amphibious fishes.
View Article and Find Full Text PDFRegulatory issues surrounding the management of selenium-introduction to a special series of papers.
Integr Environ Assess Manag
January 2025
International Institute for Sustainable Development-Experimental Lakes Area, Winnipeg, Manitoba, Canada.
Selenium (Se) is a naturally occurring metalloid in soils and rocks that is released by weathering processes; it is also enriched by some anthropogenic activities, including mining and agriculture. The mechanism of Se aquatic toxicity has been understood for several decades; at elevated concentrations, dietary Se can accumulate in maternal tissues of fish and birds, become deposited into their eggs, and can potentially result in impaired embryological development. North American environmental regulations have acknowledged differences in species sensitivity and variation among aquatic environments (i.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!