Effect of Environmental Color on the Behavioral and Physiological Response of Nile Tilapia, Oreochromis Niloticus

1
Dr. Dalia M. Sabri
Dr. Dalia M. Sabri
2
Nagwa Elnwishy
Nagwa Elnwishy
3
Francis Nwonwu
Francis Nwonwu
1 Suez Canal University (New Campus), Ismailia, Egypt.

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GJSFR Volume 12 Issue C4

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Behavioral response, Acetylecholinesterase activity, total protein level and protein fractions of the Nile tilapia, Oreochromis niloticus were investigated after 37 days exposure period to different environmental colors (Yellow, blue, green, red and darkness). Groups of 10 individuals each with initial body weight of 10.01±0.15 g were reared in 60x30x50 cm) aquarium. Two replicate groups for each color were covered with blue, green, red or black cellophane (no cellophane was used for yellow light). Fish Behavior was observed daily in the containers. Enzyme activity, mortality, total protein, albumin/globulin ratio and protein fractions were measured in 7, 37 and 45 days (7 days recovery). Results showed different behavioraland biological changes in responce to the change of color in all tested parameters. Mortality ratios were also affected by changes in surrounding color. Fish showed preference for blue light followed by green light, while red light was the most unfavorable to fish. Therefore, authors recommend applying blue color lighting in aquaculture system in order to obtain the best conditions for fish production.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Dr. Dalia M. Sabri. 2012. \u201cEffect of Environmental Color on the Behavioral and Physiological Response of Nile Tilapia, Oreochromis Niloticus\u201d. Global Journal of Science Frontier Research - C: Biological Science GJSFR-C Volume 12 (GJSFR Volume 12 Issue C4): .

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GJSFR Volume 12 Issue C4
Pg. 11- 20
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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April 21, 2012

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English

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Behavioral response, Acetylecholinesterase activity, total protein level and protein fractions of the Nile tilapia, Oreochromis niloticus were investigated after 37 days exposure period to different environmental colors (Yellow, blue, green, red and darkness). Groups of 10 individuals each with initial body weight of 10.01±0.15 g were reared in 60x30x50 cm) aquarium. Two replicate groups for each color were covered with blue, green, red or black cellophane (no cellophane was used for yellow light). Fish Behavior was observed daily in the containers. Enzyme activity, mortality, total protein, albumin/globulin ratio and protein fractions were measured in 7, 37 and 45 days (7 days recovery). Results showed different behavioraland biological changes in responce to the change of color in all tested parameters. Mortality ratios were also affected by changes in surrounding color. Fish showed preference for blue light followed by green light, while red light was the most unfavorable to fish. Therefore, authors recommend applying blue color lighting in aquaculture system in order to obtain the best conditions for fish production.

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Effect of Environmental Color on the Behavioral and Physiological Response of Nile Tilapia, Oreochromis Niloticus

Dr. Dalia M. Sabri
Dr. Dalia M. Sabri Suez Canal University (New Campus), Ismailia, Egypt.
Nagwa Elnwishy
Nagwa Elnwishy
Francis Nwonwu
Francis Nwonwu

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