The objective of this study was to determine the toxicity of the neem biopesticide azadirachtin (NEEM-ON, Brand name) on the freshwater fish ‘Labeo rohita’. Fishes were exposed to various concentrations of botanical insecticide azadirachtin for 96 h and the percent mortality was recorded. The 96h LC50 value determined by Finney’s Probit Analysis Method was found to be 42.66 ppm. Behavioural pat...

Curcumin, an orange-yellow phytochemical, hydrophobic and polyphenolic compound of turmeric (Curcuma longa Linn.), has been known to be a potent immunomodulatory agent in mice, horse, human and other higher vertebrates. In the present study, we have found its immunostimulatory properties in fish Labeo rohita (H.). Curcumin at low doses (15 and 1.5 μg) significantly (P<0.05) increased some non-s...

This study was conducted to assess the effects of water-borne Fe+Zn mixture on catalase activity in different organs Cirrhina mrigala and Labeo rohita. 90-day old fingerlings both fish species were exposed 1/2nd 1/5th their respective 96-hrs LC50 concentrations mixture, separately, at constant temperature (280C), pH (7.5), total hardness (225mgL-1). Fish sampling from each treatment done after ...

The study was conducted to evaluate the efficacy of Mikania cordata leaf powder on non-specific immune response and disease resistance of Labeo rohita fingerlings against the Aphanomyces invadans infection. M. cordata extract was incorporated in the diets (at 0.0%, 1%, 2% and 3%) of L. rohita fingerlings (19±0.95g). Blood and serum sampling was carried out on 0th day, 14th day, 28th day and 42t...

Rohu (Labeo rohita) is a species of fish of the carp family cyprinidae. A survey was carried out from September, 2012 to August, 2013 to study the prevalence of bacterial ulcerative disease in L. rohita, cultivated in a freshwater farm located at Moongilthuraipattu Village of Villupuram District, Tamil Nadu, India. To mimic the infection in healthy fish, organs such as liver, gill and ulcerativ...

Summer season with 30C is taken as control, where as rainy season with 20C is taken as cold stress and winter season with 15C is taken as cold adaptation. During summer season (control) The Acetyl Choline Esterase Increases, fats decreases and fatty acids increases. The fatty acids are utilized by the fish for its strenuous activity during summer. During Rainy, season due to cold stress the fat...

Personal care products (PCPs) are among the most commonly detected compounds in surface water. PCPs have used large amount of metal and metal oxide nanoparticles (NPs). In the present study an attempt was made to study the bioaccumulation and biochemical constituents changes in gill tissues of a freshwater fish labeo rohita exposed to metal and metal oxide nanoparticles in domestic wastewater c...

Assessment of beneficial properties by in vitro approaches forms the basis selection a potential probiotic. Moreover, bacterial strains autochthonous origin are considered more useful than from allochthonous sources. In this study, strain Pseudomonas entomophila COFCAU_PEP4, isolated intestine Indian major carp rohu (Labeo rohita), was evaluated for its probiotic using range tests, along with s...

Atrazine (2-chloro-4-ethylamino-6-isopropylamino 1,3,5-triazine) is a widely used selective herbicide. Due to its persistence, it is present in the surface waters, contaminating non-target organisms such as fish. Herbicide atrazine was administered to Labeo rohita fingerlings in 120 hours. The used dose of atrazine was 0.18 mg/l for 120 hours (LC ). The histopathological changes in the gill tis...