The Exposure Of &lt;i&gt;Heterobranchus bidorsalis&lt;/i&gt; Juveniles To Different Concentrations Of Bonny-Light Crude Oil And Their Effects On Amylase And Cretinine Kinase Activities

Nwamba, Helen Ogochukwu; Mgbenka, Bernard Obialo; Ugwu, Lawrence Linus Chukwuma; Chifomma, Agnes Nkechi

doi:10.4314/ari.v3i3.40782

Cited by 2 publications

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References 17 publications

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“…(Norris et al, 2001;Brewer et al, 2001). The responses of aquatic organisms to pollution are noticed through expression of several key enzymes, especially those of biotransformation systems (Nwamba et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Blood Erythrocytic And Leucocytic Components Of <i>Heterobranchus bidorsalis</i> Juveniles Stocked In Water Polluted With Crude Oil Fractions

et al. 2008

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The blood erythrocytic (RBC) and leucocytic (WBC) components of Heterobranchus bidorsalis juveniles exposed to different concentration of crude oil fract ons were studied Two study periods namely the toxicity and recovery periods were adopted. Lubricating engine oil (LBO), Bonny-light crude oil (BLCO), Kerosene (DPK) and premium motor spirit (PMS) were respectively applied at four concentrations 1 00, 2 00, 4.00 and 8.00 ml L i. .. i i f. . .-1 ,. Lower numbers of RBCs were recorded in fish samples exposed to the crude oil fract ons than in the control fish. The comparatively high RBCs in fish during the 4 days toxicity per od than during 42 days recovery periods is attributed to the greater destruction o RBCs during the toxicity period. The 4 00 ml L-1 LBO and BLCO concentration were apparently preferred by the fish to maintain a higher number of RBCs than with 1.00, 2.00, and 8.00 ml L-1 concentrations. Similarly, the 8.00 ml L-1 concentrations of DPK and PMS gave better values of RBCs than the 1 00, 2.00 and 4 00 ml L-1 concentrations. Reduced number WBCs in the fish blood during the toxicity period at concentrations of 1.00, 4.00 and 8.00 ml L-1 LBO; was recorded likely the phagocytic action of the WBCs.

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Section: Introductionmentioning

confidence: 99%

Blood Erythrocytic And Leucocytic Components Of <i>Heterobranchus bidorsalis</i> Juveniles Stocked In Water Polluted With Crude Oil Fractions

et al. 2008

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“…Although fish has oxidative enzymes for metabolic detoxification of xenobiotics including aromatic petroleum hydrocarbons (Payne and Penrose, 1975), little is known about the metabolism of crude oil compounds in juveniles of C. gariepinus. In Nigeria, work has been done on the effect of different concentrations of Bonny-light crude oil on the mortality rate of Heterobranchus bidorsalis (Nwamba et al, 2001). Also, working with Oreochromis niloticus, exposed to diesel, Dede and Kaglo (2001) suggested that death of the tilapia fingerlings might be related to decrease dissolved oxygen content in water due to presence of diesel.…”

Section: Introductionmentioning

confidence: 99%

Toxicity, Growth And Survival Of Clarias Gariepinus Juveniles Exposed To Different Concentrations Of Crude Oil Fractions-Polluted Water

et al. 2008

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Studies were carried out on the toxicity, growth and survival of Clarias gariepinus juveniles exposed to different concentrations of oil-polluted water. Thirty-nine aerated aquaria (60 × 30 × 30 cm 3 ), arranged in a 4 × 3 Complete Randomized Block Design were used for the study. Three oil types: the Bonny light crude oil (BLCO), the premium motor spirit (PMS) and kerosene (DPK) at oil concentrations of 1.00, 1.50, 2.00 and 2.50 ml L f l t t , l f i f i f l -1 were used in triplicates of 5 ml to contaminate 15 L of dechlorinated tap water and 20 fingerlings o Clarias gariepinus (22 ± 0.24 g) exposed to it. A control treatment (0.00 ml L -1 ) of non-oil contamination was a so used in riplicates. A 96-hour toxicity phase in the oil-polluted water preceded a 42 days recovery phase. 38% crude pro ein diet was fed to fish during exposure and recovery phases at 3% and 5% body weight per day respectively. Water temperature, pH, fish mortality and normalized biomass index (NBI) of each aquarium were monitored. The total organic nitrogen, soluble organic nitrogen and colloidal organic nitrogen in addition to soluble and adsorbed ammonia in the aquaria water and sediments were analyzed using standard methods. Results showed that the water temperature was 26 ± 2.04 ° C, pH was 6.50 ± 0.30 and fortnight y eed intake of fish increased between days 14 and 42. This increase, which corresponded w th the increase in the fortnightly weight gain, could be attributed to the reduction of stress caused during the 96-h toxicity phase. The increase in the soluble ammonium and the exchangeable ammonium concentrations o water correlated with the increase in the concentrations (1.50 -2.50 ml L -1 ) of BLCO, PMS and DPK. Percent mortality of f sh reduced between days 14 and 42 irrespective o oil treatment while fish exposed to the control treatment had lower percent mortality than those exposed to the oil treatments. This trend was corroborated by the relatively higher NBI for the control during the exposure (-0.02) and recovery {0.08 (14 days), 0.08 (38 days) and 0.21 (42 days)} periods than those of oi treatments (-49.64 to -0.10).

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The Exposure Of <i>Heterobranchus bidorsalis</i> Juveniles To Different Concentrations Of Bonny-Light Crude Oil And Their Effects On Amylase And Cretinine Kinase Activities

Cited by 2 publications

References 17 publications

Blood Erythrocytic And Leucocytic Components Of <i>Heterobranchus bidorsalis</i> Juveniles Stocked In Water Polluted With Crude Oil Fractions

Blood Erythrocytic And Leucocytic Components Of <i>Heterobranchus bidorsalis</i> Juveniles Stocked In Water Polluted With Crude Oil Fractions

Toxicity, Growth And Survival Of Clarias Gariepinus Juveniles Exposed To Different Concentrations Of Crude Oil Fractions-Polluted Water

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