Environmental stressors can alter a species’ physiology and biochemistry,
including antioxidant defenses, metabolic parameters. Body condition indexes are used to assist in describing the fish health.
Dear Dr. Khalidah,
It is really an interesting question. Pollution, as an environmental stressor could exert many negative effects on fish health. This will mostly reflects in poor growth which positively correlates with condition factor and other health parameters of fish. However, there are many physiological and biochemical mechanisms that stand behind this influence.
The following links contain helpful information.
Best regards
SM Najim
http://maxwellsci.com/print/rjees/v4-945-952.pdf
http://scihub.org/ABJNA/PDF/2012/3/ABJNA-3-3-117-124.pdf
http://www.idosi.org/wjz/wjz1(2)2006/2.pdf
http://hrcak.srce.hr/file/105235
Dear Dr. Khalidah,
It is really an interesting question. Pollution, as an environmental stressor could exert many negative effects on fish health. This will mostly reflects in poor growth which positively correlates with condition factor and other health parameters of fish. However, there are many physiological and biochemical mechanisms that stand behind this influence.
The following links contain helpful information.
Best regards
SM Najim
http://maxwellsci.com/print/rjees/v4-945-952.pdf
http://scihub.org/ABJNA/PDF/2012/3/ABJNA-3-3-117-124.pdf
http://www.idosi.org/wjz/wjz1(2)2006/2.pdf
http://hrcak.srce.hr/file/105235
Dear Dr. Salah,
Thanks the rapid answer and attached files.
Best regards
KS Al-Niaeem
Condition factor is the percentage of whole live body weight divided by cubic length of fish. It is one of the important growth conditions of fish since it gives an idea about the fish health and then, the water quality. The lesser percentage in condition factor of fish showed that the pollution affects the water quality and subsequently, the growth of fish. As reported by previous scientists, the condition factor changes may reflect fairly and faithfully the changes in body protein and lipid content. It was showed from the previous studies that, there was an inverse correlation between the hepatosomatic index and pollution. It was found that the protein content and fish quality are markedly affected by water pollution. Also, the heavy metal overload of such fish can cause sever health problems in human especially kidney and liver.
However, Estuaries and coastal areas are essential fish habitat as nursery and spawning grounds but characterized by the presence of multiple interacting stressors, both natural and anthropogenic, which can represent potential threat toward aquatic organisms, especially for commercial fish species. In this context, the impacts of environmental stressors such as chemical contamination and Harmful algal blooms (HABs) have been previously studied in the environment and experimentally approach on some fish species. The scientists used various indicators such as the growth and condition indices, and immunological parameters to determine fish responses to environmental stressors.
Dear Kalidah
I attach the the file. I hope that will be helpful to you
Beast Wishes
Amjed K. Resen
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