نتایج جستجو برای: 281 fish samples were caught by gill
تعداد نتایج: 8300435 فیلتر نتایج به سال:
abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...
abstract the purpose of this study was to find out the effect of applying the principles of group-dynamic assessment (g-da) on learning of conditional structures in english by iranian efl learners at the intermediate level, which according to the formal educational system in iran, includes students who are in their second year of studying in high schools of koohdasht city. this study was a qua...
The spatial distribution and coexistence of monogenean dactylogyrids was assessed on the gills of 63 specimens of wild spotted rose snapper, Lutjanus guttatus (Steindachner), caught in the Mazatlan Bay, Sinaloa, Mexico. Five species are reported: Euryhaliotrema perezponcei Garcia-Vargas, Fajer-Avila et Lamothe-Argumedo, 2008, Euryhaliotrematoides sp., Haliotrematoides spinatus Kritsky et Mendoz...
A detailed microbiological and parasitological survey of salmonids and indigenous fish in the upper reaches of selected river systems in Natal was undertaken. Fish were collected from the rivers by electro-fishing, from dams by gill netting and from hatcheries along the rivers. A total of 678 fish from 26 different sites along 8 river systems were collected. No parasites could be detected on fi...
The largest river in the southern basin of the Caspian Sea is Sefidroud, and the most important native fish of that river is the large head sea bass. Due to its long route and passing through different areas, this river is exposed to various contaminants including heavy metals. The aim of this research was to investigate the amount of bioaccumulation of lead and nickel heavy metals in L. capito...
Mackerl scad, is an economically important small pelagic fish species in the waters of Ternate Island which exploited by fishermen with various types active fishing gear such as purse seine, bagan and gill net. The use that less selective activities throughout year not equipped utilization regulations, expected to cause pressure on skipjack stocks Island. . This research a type empirical carrie...
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
In this study, it was aimed to determine the length and weight relationships (LWRs) Fulton’s condition factors (K) for three commercial fish species in ?skenderun bay. For purpose, tub gurnard (Chelidonichthys lucerne, Linnaeus, 1758), sand soles (Pegusa lascaris, Risso, 1810), gilthead seabream (Sparus aurata, 1758) were collected by a single artisanal fisherman during September- December mont...
The discovery in the late 1960s of ‘dead’ or dying lakes (Beamish and Harvey, 1972) nearly devoid of living animals and plants owing to the effects of acid precipitation spawned intense research into the effects of low pH environments on the physiology of freshwater fish. Over the next decade, an extensive body of literature documented the adverse effects of acid environments on acid–base statu...
This study aims to determine the toxic effects of heavy metal pollution on carp (Cyprinus carpio) in Sapanca Lake by biochemical and histological analyses. For this reason, fish water samples were taken from lake 2015. Heavy (Cu, Fe, Zn, Pb, Cd) analyzes column tissues (muscle, liver, gill) determined ICP-OES. CAT, GSH MDA levels, which are oxidative stress bioindicators tissues, measured spect...
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