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61,005 resultsShowing papers similar to Conservation status of anamniotes reported from Khanwari pond of district Kaushambi (U.P.), India
ClearIndigenous Freshwater Ichthyofauna in the Dhanu River and Surrounding Wetlands of Bangladesh: Species Diversity, Availability, and Conservation Perspectives
Researchers documented 91 indigenous fish species across 29 families in the Dhanu River and surrounding wetlands of Bangladesh, compiling detailed data on habitat preferences, conservation status, population trends, and threats. The study provides a baseline checklist to support freshwater biodiversity conservation in this data-poor region.
Fish diversity of Dahaura Lake, Bahraich, U.P.
Researchers investigated fish diversity in Dahaura Lake, Bahraich (Uttar Pradesh, India), recording 28 fish species belonging to 21 genera, 15 families, and 7 orders under a mopping survey programme, with Siluriformes (9 species) and Cypriniformes (7 species) as the dominant orders in this wetland ecosystem.
Biodiversity, distributions and isolation of microplastics pollution in finfish species in the Panjkora River at Lower and Upper Dir districts of Khyber Pakhtunkhwa province of Pakistan
Researchers documented fish biodiversity and microplastic pollution across 10 sites in the Panjkora River, Pakistan, collecting 724 fish specimens representing 18 species across 5 families and characterizing microplastic contamination in fish tissues, with Cyprinidae dominating the community and microplastics detected throughout the sampling area.
Diversity and relative abundance of aquatic insects of Dahaura Lake, Bahraich, U.P.
This ecological survey documented aquatic insect diversity and abundance in Dahaura Lake in India over a six-month period, finding 25 genera from multiple orders. Aquatic insects are bioindicators of water quality and could be used to assess the ecological impacts of microplastic contamination in freshwater ecosystems.
Assessment on Microplastics Contamination in Freshwater Fish: a Case Study of the Ubolratana Reservoir, Thailand
Researchers examined microplastic contamination in freshwater fish from the Ubolratana Reservoir, Thailand, finding that 96.4% of 14 examined species had ingested microplastics, and assessed abundance, size, colour, and shape of particles from stomach and intestinal contents across sampling stations.
The Herpetofauna Present in the Province of Pastaza in Ecuador: Diversity and Conservation Status
This study found 75 species of frogs, lizards, snakes, and salamanders in Ecuador's Pastaza province, including 28 species that are at risk of disappearing forever. The research shows these Amazon animals are struggling, with their numbers going up and down dramatically from year to year. This matters because healthy populations of amphibians and reptiles help control disease-carrying insects and indicate whether ecosystems that humans depend on are in good shape.
Characterization of microplastics in commercially valued Gangetic fishes and its exposure assessment on humans
Researchers characterized microplastics in commercially sold fish from the Ganges River in India, finding plastic contamination across multiple species and providing an initial exposure assessment for human consumers who rely on freshwater fish as a primary protein source.
Micro(nano)plastics as an emerging risk factor to the health of amphibian: A scientometric and systematic review
Only 12 studies have examined microplastic effects on amphibians, concentrated in Brazil and China and limited mostly to the Anura order; lab-tested concentrations were far from environmentally relevant levels, leaving significant knowledge gaps about mechanisms of toxicity in this vertebrate group.
Fishes at Risk: Unveiling the Hidden Diversity of a Vulnerable Lake in the Peruvian Amazon Region
This study conducted the first fish diversity survey of Huachana lake in the Peruvian Amazon, a vulnerable ecosystem receiving urban wastewater from the city of Iquitos. Researchers documented previously unknown ichthyological diversity in the lake, highlighting the importance of baseline surveys for conservation planning in threatened Amazonian water bodies.
Identifying the presence of microplastics in frogs from the largest delta of the world
Researchers found microplastics in 90% of frogs collected from nine species across the Bengal delta, with fibers being the most common type — indicating that amphibians in this major river system are heavily exposed to plastic pollution, which may contribute to their global population decline.
Lake Guidimouni: Diversity of Vertebrate Fauna and its Threats
Researchers assessed the diversity of vertebrate fauna and associated human-induced threats at Lake Guidimouni, a dryland lake in the West African Sahel of Niger, using field investigations and questionnaires. The survey recorded 21 species across fish, bird, reptile, and amphibian classes, with Cichlidae being the dominant fish family, and documented multiple anthropogenic threats to the lake ecosystem.
Aquatic pollution and its effects on fish health
Laboratory and field experiments in Bihar, India examined how plastic microbeads, pesticides, mercury, crude oil, and pharmaceuticals affect fish health, finding organ damage, reproductive failure, and elevated mortality across multiple pollutant types.
Variation in microplastic characteristics among amphibian larvae: a comparative study across different species and the influence of human activity
Scientists examined microplastics inside amphibian larvae from 10 species and found plastic particles in all of them, with blue fibers being the most common type. Larger larvae tended to contain longer plastic fragments, and there was a relationship between human activity levels near habitats and the characteristics of the plastics found. This study shows that microplastic contamination has penetrated freshwater food webs, affecting animals during their most vulnerable developmental stages.
Combined contamination of microplastics and heavy metals in a riverine ecosystem: insights from fish and amphibian species
Researchers conducted the first simultaneous evaluation of microplastics and heavy metals in both freshwater fish and amphibians from the Seimareh River in western Iran. They found that amphibians ingested about 9% more microplastic particles than fish, and strong correlations between microplastic abundance and certain metals like lead, cadmium, and arsenic suggest that microplastics may enhance metal bioavailability. The study identifies amphibians as particularly sensitive indicators of combined pollution from microplastics and heavy metals.
Microplastics in aquatic species of Anzali wetland: An important freshwater biodiversity hotspot in Iran
Researchers surveyed microplastic contamination in seven aquatic species from Anzali Wetland in Iran, a globally recognized biodiversity hotspot. They found microplastics in the digestive tracts, gills, and skin of all species examined, with herbivorous bottom-dwelling fish showing the highest contamination levels. The findings raise concerns about the widespread penetration of microplastics into freshwater food webs at ecologically sensitive sites.
Microplastics as an emerging threat to amphibians: Current status and future perspectives
This review summarizes existing research on microplastic contamination in amphibians like frogs and salamanders, finding that over 80% of studied species had accumulated microplastics. The particles persisted in organs, showed toxic and gene-damaging effects, and could transfer through the food chain. Since amphibians are indicators of environmental health, widespread microplastic accumulation in these animals signals broader ecosystem contamination that can ultimately affect human food and water sources.
Ecotoxicological perspectives of microplastic pollution in amphibians
This review summarizes research on how microplastics affect amphibians, which are considered important indicator species for freshwater pollution. Researchers found evidence that microplastics can impair amphibian growth, immune function, and gene expression, with effects varying by species and particle characteristics. The findings raise concerns about the vulnerability of amphibian populations already threatened by habitat loss and other environmental stressors.
Distribution and Expansion of Alien Fish Species in the Karun River Basin, Iran
Researchers assessed the distribution of alien fish species across 39 sites in the Karun River Basin, Iran, documenting 10 non-native species among the 39 total species found. The alien species were primarily concentrated in impounded downstream reaches, and environmental analysis linked their distribution to specific habitat conditions. The study highlights the ecological risks of invasive fish introductions in Iranian river systems.
Characterization of fish assemblages in eleven multi-use reservoirs from North Carolina, USA
This study characterized fish assemblages in eleven North Carolina reservoirs to support multi-use management decisions. Fish assemblage data provides baseline information for assessing whether microplastic contamination in reservoir ecosystems is affecting fish community diversity and abundance over time.
A comprehensive review on assessment of plastic debris in aquatic environment and its prevalence in fishes and other aquatic animals in India
This review compiled Indian studies on plastic debris in aquatic environments and aquatic organisms, documenting widespread contamination in rivers, coastal waters, and fisheries, and identifying the lack of standardized methods and long-term monitoring as major obstacles to understanding the full extent of the problem.
Occurrence of plastics and their characterization in wild caught fish species (Labeo rohita, Wallago attu and Mystus tengara) of River Ganga (India) compared to a commercially cultured species (L. rohita)
Researchers analyzed nine wild-caught fish species from two sites along the River Ganga in Patna, India, detecting plastics in gastrointestinal tracts, liver, gills, and muscles, providing rare data on plastic contamination in one of the world's most polluted rivers.
Microplastics pollution: An emerging threat to freshwater aquatic ecosystem of India
This review examined microplastic pollution as an emerging threat to freshwater aquatic ecosystems in India, discussing sources, distribution, ecotoxicological effects on aquatic biota, and potential human health hazards. The authors highlighted that while marine microplastic research is extensive, freshwater ecosystems in India remain critically understudied relative to the scale of contamination.
Microplastic Contamination in Three Amphibian Species: Implications for Amphibian Ecosystems
Researchers investigated microplastic contamination in tadpoles of three amphibian species collected from two Thai provinces, finding 26 microplastic particles — both fragments and fibers — across all species following hydrogen peroxide digestion and stereomicroscopic analysis. The banded bullfrog (Kaloula pulchra) carried the most particles (15), all fibers, indicating widespread environmental exposure even at early developmental stages.
Aquatic Plant Diversity of Lakes in Somwarapete Taluk, Kodagu, Karnataka
Researchers documented 43 aquatic plant species across three lakes in Kodagu district, Karnataka, India over a one-year study period. Dominant families included Araceae and Hydrocharitaceae. This biodiversity survey provides a baseline for monitoring how pollution and land use changes affect freshwater ecosystems in this region.