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61,005 resultsShowing papers similar to Survey of parasitic fauna of some fishes from Osun river, Osun state, southwestern, Nigeria
ClearNematodes as indicators of environmental changes in a river with different levels of anthropogenic impact
Researchers investigated whether nematode parasite communities in Geophagus brasiliensis fish could serve as bioindicators of environmental change in a river with varying pollution levels in Brazil. Changes in parasite diversity and abundance at three sampling points tracked environmental degradation, supporting nematodes as sensitive ecological health indicators.
Comparative Study of the Parasitic Helminth Burden of Clarias gariepinus and Tilapia zilli In Fresh Water Reservoir (Zobe Dam) Dutsin-Ma, Katsina, Nigeria
Researchers examined helminth parasite burdens in catfish (Clarias gariepinus) and redbelly tilapia (Tilapia zilli) from Zobe Dam in Nigeria, comparing parasite prevalence and species composition between the two fish hosts.
Seasonal variations of water physico-chemistry, heavy metal concentrations and ecological abundance and biodiversity of fish from two Lagoon streams
Researchers monitored water chemistry, heavy metal concentrations, and fish biodiversity across seasons in two Nigerian lagoon streams. Heavy metals often adsorb to microplastics in aquatic environments, and documenting baseline contamination levels is important for understanding cumulative pollution impacts on freshwater fish communities.
Seasonal patterns of infestation by monogenean parasites of fish and their relationship with water parameters in two rivers with different disturbance gradients in southeastern Brazil
This study examined how seasonal changes in water chemistry and host fish condition affected infection rates of monogenean parasites in two Brazilian rivers with different levels of human disturbance. Environmental pollution, including contaminants that affect host immunity, can alter parasite dynamics in freshwater fish populations.
Occurrence and distribution of microplastics in water, sediment, and aquatic insects of the Owena River, Osun state, Nigeria
Researchers surveyed microplastic contamination in water, sediment, and aquatic insects from the Owena River in Nigeria over a 12-month period. Microplastics were found across all sample types and river sections, with fibers and fragments being the most common forms. The study suggests that aquatic insects can serve as biological indicators of microplastic pollution in freshwater ecosystems.
Assessment of fishes, sediment and water from some inland rivers across the six geopolitical zones in Nigeria for microplastics
Researchers analyzed fish, sediment, and water samples from inland rivers in Nigeria for microplastic contamination, finding particles across all matrices sampled. The study provides baseline pollution data for a region with limited prior microplastic monitoring.
A Survey of Ecto-Parasites in Oreochromis niloticus (Linnaeus, 1758) (Nile Tilapia) in Zobe Reservoir, Katsina State
This study examined ectoparasite infestations in Nile tilapia from a reservoir in Nigeria. This is an aquaculture parasitology paper with no direct connection to microplastics research.
Freshwater insects of different feeding guilds ingest microplastics in two Gulf of Guinea tributaries in Nigeria
Scientists collected freshwater insects from two Nigerian tributaries of the Gulf of Guinea and found microplastics ingested across different feeding guilds, providing rare baseline data on microplastic contamination of African freshwater ecosystems.
Detection and occurrence of microplastics in the stomach of commercial fish species from a municipal water supply lake in southwestern Nigeria
Researchers screened and detected microplastics in the stomachs of commonly consumed fish from a Nigerian municipal water supply lake, providing baseline data for a region where such records are scarce and raising concerns about human dietary exposure.
Presence and Abundance of Microplastics in Benthic Organisms from Some Niger Delta, Nigeria Coastal Rivers
Researchers investigated the presence and abundance of microplastics in benthic organisms collected from coastal rivers in the Niger Delta region of Nigeria, documenting contamination levels in organisms from these ecologically significant waterways.
Microplastics Pollution of Water, Sediment, and Selected Fish Species from Bayelsa State, Nigeria
Researchers sampled water, sediment, and multiple fish species from three communities in Sagbama, Bayelsa State, Nigeria, to characterize microplastic contamination across aquatic compartments. Microplastics were detected in all matrices, with fibers dominating, establishing baseline contamination data for this Niger Delta region where residents rely heavily on local fish for food.
Microplastics Pollution of Water, Sediment, and Selected Fish Species from Bayelsa State, Nigeria
Researchers sampled water, sediment, and multiple fish species from three communities in Sagbama, Bayelsa State, Nigeria, to characterize microplastic contamination across aquatic compartments. Microplastics were detected in all matrices, with fibers dominating, establishing baseline contamination data for this Niger Delta region where residents rely heavily on local fish for food.
Detection of Microplastic Pollutants and the Wellbeing of Clarias gariepinus (African Catfish) in Jama’are River, Bauchi State, Nigeria
Researchers detected multiple types of microplastics — including polyethylene, polypropylene, and PVC — in water and fish from a Nigerian river, and found that African catfish living there showed signs of tissue damage and altered blood markers, indicating that microplastic contamination is harming freshwater fish health in the region.
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.
Assessment of Microplastics Found in Two Fish Species of Clarias gariepinus and Oreochromis niloticus From River Niger, Lokoja, Kogi State, Nigeria
Researchers assessed microplastic contamination in two commercially important fish species, Clarias gariepinus and Oreochromis niloticus, collected from the River Niger at Lokoja in Kogi State, Nigeria. The study found microplastics present in both species, highlighting the riverine pollution burden and potential for human dietary exposure through fish consumption.
Microplastics profile in fishes from selected burrow pits: a case of plastic pollution in Kano metropolis, Nigeria
Researchers detected microplastics in the gastrointestinal tracts, gills, and muscle tissues of Nile tilapia and redbelly tilapia collected from burrow pits in Kano, Nigeria, confirming that plastic pollution has penetrated freshwater fish in a landlocked urban African setting.
Effect of environmental factors on blood counts of Gambusia affinis caught at Brantas River watershed, Indonesia
Researchers assessed the ecosystem health of the Brantas River in Indonesia by combining six water quality parameters with hematological biomarker analysis of Gambusia affinis fish collected from 10 sampling sites, examining how environmental contamination levels relate to fish blood count profiles as indicators of aquatic health.
Microplastics Contamination of Surface Water and Selected Fish Species in Ovia River, Southern Nigeria
Researchers examined microplastic contamination in surface water and two fish species (Notopterus afer and Heterobranchus bidorsalis) from Ovia River in Southern Nigeria, using SEM, FTIR, and EDX to characterize particle size distribution, polymer composition, and elemental contamination. The study provides baseline data on microplastic pollution in a West African river system and documents uptake of plastic particles by commercially important fish species.
Ingestão e efeitos morfofisiológicos dos microplásticos em espécies de peixes da Amazônia Central
This Brazilian thesis investigates microplastic ingestion and its effects on fish from the Amazon basin, one of the world's most biodiverse freshwater systems. Given that aquatic organisms in even remote areas are exposed to microplastics, the research highlights risks to Amazon fish diversity and the potential for microplastics to disrupt aquatic food webs in previously pristine ecosystems.
Microplastic occurrence in fish species from the Iquitos region in Peru, western Amazonia
Researchers surveyed microplastic contamination in 61 fish from 15 commercial species in the Peruvian Amazon near Iquitos. The study found microplastics in 100% of sampled fish, with an average of 38.3 particles per individual detected across gills and internal organs, demonstrating that microplastic pollution has reached even remote areas of the western Amazon basin.
Avaliando a poluição plástica em ecossistemas brasileiros: um estudo integrado da poluição em organismos e ambientes.
Researchers examined plastic ingestion by freshwater fish across 23 species in the Upper Parana River floodplain in Brazil, finding that nine species ingested plastics and that seasonality significantly influenced ingestion rates, with the highest levels recorded during dry season. The study also synthesized trends and gaps in Brazilian plastic pollution research, linking plastic contamination patterns to fishing activities, domestic waste, and anthropogenic pressures in aquatic ecosystems.
Heavy Metals and their Effects on Macroinvertebrates Present in the Ojo River, Lagos, Nigeria
Researchers investigated heavy metal concentrations in the tissues of crab, prawn, and crayfish from the Ojo River in Lagos, Nigeria, assessing contamination levels in commercially harvested crustaceans and their implications for human health and aquatic ecosystem integrity.
Effectiveness assessment of using water environmental microHI to predict the health status of wild fish
Researchers tested whether measuring the health of microbial communities in river water could predict the health status of wild fish living there. The study found that the environmental microbiota health index was effective for bottom-dwelling fish but less reliable for fish living in the open water, suggesting this non-invasive monitoring approach works best for certain types of aquatic species.
Characterisation of Ingested Microplastic Particles and Textile Microfibres in the Gastrointestinal Tract of Demersal Fish from a Peri-Urban Open Access Lagoon in Lagos Nigeria
Researchers characterized microplastic particles and textile microfibres in the gastrointestinal tracts of demersal fish from multiple genera caught in a peri-urban lagoon bordering Lagos, Nigeria. They found evidence of microplastic ingestion across multiple fish species, contributing to the limited but growing body of data on microplastic exposure in West African aquatic food webs.