To what extent will contaminated water affect physical, haematological and lipid properties of Clarias gariepinus?

Adeyemi, O.; Oginni, Fadekemi Olufunmilayo; Igbakin, Ayanfe P.; Adeyemi, Oyeyemi; Osubor, Chris C.

doi:10.1016/j.etp.2009.09.009

Cited by 3 publications

(1 citation statement)

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“…The higher CI and lipid accumulation rates at Buenos Aires, indicated by the significantly higher lipidbody mass slopes, suggested that sewage-derived organic matter was a cost-efficient food resource allowing a higher body mass gain through an enhanced lipogenesis. Besides the abundant dietary inputs of fresh anthropogenic matter as the main factor leading to this metabolic alteration, a possible interference of the high contaminant load at Buenos Aires in lipid metabolism cannot be ruled out, since enhanced lipid accumulation, triglyceride deposition, and body mass gain have been observed in fish exposed to organic pollutants (Addison 1982;Geyer et al 1994;Adeyemi et al 2011;Marit and Weber 2011). The ''obesogen'' character of organic pollutants has been effectively demonstrated in rats and fish (Grun and Blumberg 2009;Janesick and Blumberg 2011;Meador et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Cost-benefit of feeding on anthropogenic organic matter: lipid changes in a detritivorous fish (Prochilodus lineatus)

et al. 2013

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The lipid composition of muscle and liver of detritivorous fish Prochilodus lineatus, settling particles and sediments from reference and polluted areas of the Parana ´-Rio de la Plata basin were analyzed to evaluate the impact of feeding on contaminated detritus. Overall, muscular lipids were highly variable (14 ± 13 % wet mass, ww) and increased with body mass trough a rapid triglyceride accumulation [82 ± 7.9 % neutral lipids (NL) for fish weighing less than 1 kg to 99 ± 0.51 % NL for fish weighing more than 4 kg] with a parallel decrease of free fatty acid (13 ± 6.0 to 0.11 ± 0.23 % NL). Liver lipids were more uniform (6.0 ± 2.1 % ww) and were dominated by triglycerides (40 ± 21 % NL) and free fatty acids (34 ± 19 % NL). Compared with fish from reference areas in the North, polluted fish from Buenos Aires presented higher muscular lipid contents (24 ± 13 vs. 3.9 ± 3.1 % ww) and triglyceride abundance (98 ± 3.5 vs. 84 ± 9.7 % NL), and enlarged livers (Hepatosomatic index 1.4 ± 0.4 vs. 0.7 ± 0.2) enriched with esterified cholesterol (20 ± 9.1 vs. 11 ± 9.9 % NL). These differences were consistent with the higher proportions of lipids, enriched with free fatty acids and triglycerides, in stomach contents, settling particles and sediments from Buenos Aires relative to the North of the basin. The change in Prochilodus lineatus diet from organic-poor vegetal detritus in the north to polluted but abundant and fresh anthropogenic matter at Buenos Aires resulted in multiple alterations of lipid metabolism.

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