Results: 293

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

Braz. j. biol; 84 (), 2024
The basic aim of this study was aimed to determine the ichthyofaunal diversity of River Panjkora in both upper and lower Dir districts in Khyber Pakhtunkhwa province of Pakistan.Fish samples were collected by using fishnets from March to September 2020. A total of 724 specimens were collected and classif...

Fatty acid profile variations after exposure to textile industry effluents in Indian Major Carps

Braz. j. biol; 84 (), 2024
Abstract Indian major carps are the widely consumed fish species of Pakistan, being a cheap source of proteins and unsaturated fatty acids, they are good for cardiovascular health. Water pollution due to discharge of untreated industrial waste water into water bodies contaminates this precious source of ...

Assessment of anthropogenic-causing-agents act on waterbirds-diversity in the vicinity of Tarbela Dam, Indus River, Pakistan

Braz. j. biol; 84 (), 2024
Abstract Birds are among the best bio-indicators, which can guide us to recognize some of the main conservation concerns in ecosystems. Anthropogenic impacts such as deforestation, habitat degradation, modification of landscapes, and decreased quality of habitats are major threats to bird diversity. The ...

Benthic community ecology for Algerian river Seybouse

Braz. j. biol; 84 (), 2024
Abstract The Seybouse is the second largest river basin in Algeria, hosting an important biodiversity and providing various ecosystem services. This watershed is highly influenced by agricultural and industrial activities, which threaten its biodiversity and ecosystem integrity. The use of benthic macroi...

Length-weight relationship for Potamotrygon wallacei (Carvalho, Rosa and Araújo, 2016) caught in the middle Negro River, Barcelos, Brazilian Amazon

Braz. j. biol; 84 (), 2024
Abstract This research aimed to estimate the length-weight ratio (LWR) of the stingray Potamotrygon wallacei, known locally as the cururu, which was caught in streams and lakes in the middle Negro River region, Amazonas, Brazil. The stingrays were captured during the night (from 11 pm to 1 am) near the s...

Trophic ecology of Acestrorhynchus falcirostris Cuvier, 1819 in island lakes on the lower stretch of the Solimões River, Amazon Basin

Braz. j. biol; 84 (), 2024
Abstract The aim objective of this study was to determine the trophic ecology of juvenile and adult Acestrorhynchus falcirostris during the rising and flood (high-water) period in six island lakes adjacent to the Solimões River. As such, we investigated: i) the trophic position, through the fractional t...

Características del hábitat que regulan la estructura de las comunidades de macroinvertebrados en ríos tropicales de montaña (Antioquía, Colombia)

Rev. biol. trop; 71 (1), 2023
Introducción: Las comunidades de macroinvertebrados son afectadas simultáneamente por la calidad del agua y las características físicas del hábitat acuático, complicando su uso en la bioindicación. Objetivo: Determinar cuáles variables del hábitat condicionan la comunidad de macroinvertebrados a...

Effects of environmental stability and phycoperiphyton structure on the macroinvertebrate community of regulated Andean rivers

Rev. biol. trop; 71 (1), 2023
Introduction: The variability in the structure of aquatic communities is frequently attributed to environmental changes; however, in stable environments such as regulated rivers, trophic interactions could be another key environmental factor determining the structure of these communities. These alteratio...

Evolución 2010-2019 de la mortalidad neonatal en la cuenca Matanza Riachuelo. Comparación con Argentina, provincia de Buenos Aires y Ciudad Autónoma de Buenos Aires, 2019

Arch. argent. pediatr; 121 (5), 2023
Introducción. La tasa de mortalidad neonatal (TMN) es un indicador de condiciones socioeconómicas, ambientales y sanitarias. La cuenca Matanza Riachuelo (CMR) es la más contaminada de Argentina. Objetivo. Analizar la evolución de la mortalidad neonatal (MN) en la CMR entre los años 2010 y 2019, sus ...

Lumbriculus variegatus (Müller, 1774) (Oligochaeta, Lumbriculidae) in Campos do Jordão State Park, São Paulo, Brazil

Braz. j. biol; 83 (), 2023
Abstract The aim of this paper was recording the occurrence of the species Lumbriculus variegatus (Müller, 1774) (Oligochaeta, Lumbriculidae) in lotic systems of the State of São Paulo. Specimens were collected in Sapucaí River, located in Campos do Jordão State Park. The mapping of geographical dist...