نتایج جستجو برای: 281 fish samples were caught by gill
تعداد نتایج: 8300435 فیلتر نتایج به سال:
in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...
Recreational and subsistence fishing plays a major role in the lives of many people, although most Americans obtain their fish from supermarkets or other commercial sources. Fish consumption has generally increased in recent years, largely because of the nutritional benefits. Recent concerns about contaminants in fish have prompted federal and state agencies to analyze fish (especially freshwat...
Background and purpose: Simultaneous exposure of nanoparticles can cause serious damage to aquatic organisms including fish. The aim of this study was to investigate the toxicity effect of subchronic exposure of copper oxide nanoparticles (CuO NPs) in presence of titanium dioxide nanoparticles (TiO2 NPs) on the histopathology of gill and kidney tissues of fish model in vivo exposure. ...
Jellyfish are of particular concern for marine finfish aquaculture. In recent years repeated mass mortality episodes of farmed fish were caused by blooms of gelatinous cnidarian stingers, as a consequence of a wide range of hemolytic, cytotoxic, and neurotoxic properties of associated cnidocytes venoms. The mauve stinger jellyfish Pelagia noctiluca (Scyphozoa) has been identified as direct caus...
Microplastics are known to be emerging contaminants and there are widespread concerns about their potential toxic effects. Histopathological study is one of the appropriate methods in diagnosing the effects of environmental pollutants on aquatics. In this study, the accumulation and adsorption of polystyrene microplastics (PS-MPs) in the gills of Goldfish were identified and its toxic effect...
Abundance and diet of larger predatory fishes in Phragmitesmarsh creeks were compared with those in natural Spartina alterniflora marshes and Phragmites marshes exposed to herbicides and burning (treated marshes). The most abundant fishes (n=3,107) caught in gill nets from June to November 2001 and May to November 2002 were Morone americana (white perch; 82%) and Ictalurus punctatus (channel ca...
The purpose of the study is to analyze changes in internal organs golden mullet specious caught May 2022 scientific expeditions western part Caspian Sea. Mature mullets were examined. species weighed and measured. There made 152 histological sections 10 (liver, spleen, gills, ovaries, muscles). studied 3-4 years old. collected samples processed by classical techniques. According results conduct...
Flies are the main vector of gastrointestinal infections, so it must control them. Flytraps one fly methods that considered few risk to environmental health. This study aims determine effectiveness flytraps decoy variations in chikens farm. The used a completely randomized design (CRD), during February-April 2019. Two types bait (shrimp and fish gills) were from traditional market waste placed ...
The myxozoan Henneguya friderici is a parasite of the gills, intestine, kidney and liver of Leporinus friderici, a characiform fish belonging to the family Anostomidae. Forty-two specimens of L. friderici that had been caught in the Mogi Guaçú River, state of São Paulo, were studied. Elongated white plasmodia were found in the gill filaments of 10 host specimens (24%). The mature spores had an ...
Acanthopagrus latus is one of the major commercially exploited species in the Persian Gulf. In recent years, it has gained importance as a candidate for aquaculture. Haematological parameters of wild-caught specimens were studied during the pre-spawning period to determine if they are influenced by the sex of fish. Blood samples were collected from 55 Fish (30 female and 25 male) captured from...
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