State of thermal tolerance in an endangered himalayan fish Tor putitora revealed by expression modulation in environmental stress related genes.

Increasing temperature due to global warming in the Himalayan regions has severe implications for the survival of aquatic ectotherms. To study the thermal acclimation and heat tolerance of an endangered Himalayan fish species, Tor putitora, we examined tissue-specific mRNA expression patterns of heat-shock proteins (HSP90β; HSP70, HSP60, HSP47, HSP30, and HSP20), warm-temperature acclimation proteins (WAP65-1) and cyclin-dependent kinase inhibitor 1B (CDKN1B) genes in liver, brain, gill, kidney, muscle, and gonad tissues at the intervals of 10, 20, and 30 days during a high-temperature treatment (34.0 °C) for 30 days.

Detrimental influence of industrial effluents, especially heavy metals, on limnological parameters of water and nutritional profile in addition to enzymatic activities of fish, Sperata seenghala (Sykes, 1839) from diverse Ramsar sites, India (Punjab).

The present research was designed to determine the nutritive value of the liver and intestine of fish, Sperata seenghala, the impact of effluence load on limnological parameters of water and proximate composition of fish organs, especially on fatty acids, liver enzymatic activities, seasonal variations in the nutritional profile of fish, and to check and compare the pollution status of Ramsar sites in Punjab by calculating the water quality index, heavy metal pollution index, and metal index from June 2018 to August 2020. WQI of Harike wetland was found to be 53.95, which depicts that water quality in this region is "poor".

Impact of industrial effluents on physico-chemical parameters of water and fatty acid profile of fish, Labeo rohita (Hamilton), collected from the Ramsar sites of Punjab, India.

In this contemporary era, wetlands and the entire aquatic diversity are suffering from major pollution problem. Not only the aggregation of higher population in metropolitan causes the production of plenty of solid, liquid and gaseous wastes, but also the high-technological industries contribute to a mammoth of wastes in the ecosystem. During the process of industrial effluent discharge into the water bodies, the toxic substances available in these wastes can affect the aquatic flora and fauna, resultantly disturbing the entire system and constituting human health hazards indirectly or directly.

Alterations in ultra-structures and elemental composition of ovaries of Labeo rohita (Hamilton-Buchanan) as a pollution indicator in Harike Wetland (Ramsar Site), India.

Teleosts are the largest class of bony fishes and account for more than 90% of fish species. Their reproductive systems are the key feature to adopt gradual evolutionary change under aquatic environmental conditions. Aquatic ecosystems are faced with a serious threat to their proliferation due to the discharge of untreated industrial effluents into them.