Biological half-lives of chemicals in fishes

Niimi, A. J.

doi:10.1007/978-1-4613-8719-0_1

Cited by 66 publications

(35 citation statements)

References 165 publications

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“…The mechanisms by which temperature modifies accumulation of metals are not yet fully understood. Activity of fish may increase by increasing the water temperature that can lead to increased gill ventilation rates owing to higher oxygen demand for metabolic requirement and / or decreasing oxygen concentration in water (Heath, 1987;Niimi, 1987;Douben, 1990). Data of the present study coincide with the previous studies that reported Increased of metals concentration in fish tissues with increasing of temperature.…”

Section: -Metals Concentration In Different Fish Organssupporting

confidence: 87%

Comparative Study on the Levels of Heavy Metals in the Bitter Lakes and Lake Timsah, (Suez Canal) in Relation to the Reproductive Cycle of the Rabbit Fish Siganus Rivula Tus.

Elhalfawy

Mahmoud

Ramadan

et al. 2006

Egypt. J. of Aquatic Biolo. and Fish.

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T he concentrations of Cu, Zn, Pb, Cd, Fe, Mn, Cr, Ni and Co in muscles, liver and gonads of the marine rabbit fish Siganus rivulaivs from the Bitter lakes and lake Timsah, (Suez Canal) were investigated seasonally, over the course of one year (November 2002 -August 2003. Muscles recorded the lowest concentrations of metals than other organs which ranged between 0.22-0.76 and 0.27 -1.23, 1.95 -3.67 and 3. 01 -5.08, 0.09 -0.43 and 0.24 -0.51, 0.04 -0.16 and 0.11 -0.37, 4.32 -5.66 and 5.01 -10.33, 0.12 -0.29 and 0.26 -1.35,0.06 -0.09 and 0.05 -0.16, 0.02 -0.39 and 0.03 -0.51 and 0.05 -0.24 and 0.06 -0.31 jig/g wet weight for Cu, Zn, Pb, Cd, Fe, Mn, Cr, Ni and Co in Bitter lakes and lake Timsah, respectively. The highest concentrations of all studied metals were found in gonads. Variation of metals in fish muscles through different seasons indicated that the most studied metals exhibited their highest value during the hot seasons (spring & summer). Gonadosomatic index (GSI) and its relationship with metal accumulation was calculated for the studied fish. By using seasonal changes in the values of gonadosomatic index, it was found that their spawning season is during spring.

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Section: -Metals Concentration In Different Fish Organssupporting

confidence: 87%

Comparative Study on the Levels of Heavy Metals in the Bitter Lakes and Lake Timsah, (Suez Canal) in Relation to the Reproductive Cycle of the Rabbit Fish Siganus Rivula Tus.

Elhalfawy

Mahmoud

Ramadan

et al. 2006

Egypt. J. of Aquatic Biolo. and Fish.

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“…Varanasi et al (1985) ranked the extent of benzo[a]pyrene metabolism by aquatic organisms as follows: fish > shrimp > amphipod crustaceans > clams. Half-lives for elimination of PAHs in fish ranged from >2 days to 9 days (Niimi 1987).…”

Section: Potential For Human Exposurementioning

confidence: 99%

The Gulf Oil Spill

2011

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“…Simazine does not biomagnify in the food web, and its bioaccumulation potential is low, with bioconcentration factors (BCF) < 100. The depuration half-life in fish is < 7 days if the organism is transferred to uncontaminated water following exposure, indicating that simazine is rapidly excreted or metabolized (Niimi, 1987). Simazine is the second most commonly detected pesticide in surface and ground waters in the U.S., Europe, and Australia, presumably due to relatively high persistence (Inoue et al, 2006).…”

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confidence: 99%