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The effect of growth inhibiting factors on the total lipid content of the zebrafish, Brachydanio rerio (Hamilton‐Buchanan)
Author(s) -
Roales R. R.
Publication year - 1981
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1981.tb03813.x
Subject(s) - biology , zebrafish , activated charcoal , extraction (chemistry) , fish <actinopterygii> , lipid metabolism , zoology , food science , biochemistry , chromatography , fishery , chemistry , adsorption , organic chemistry , gene
The effects of growth inhibiting factors on the total lipid content of zebrafish was studied. Crowded zebrafish were subjected to extraction of the aquarium water using activated charcoal. Control fish were crowded, but were not subjected to extraction. This resulted in a gain in mean wet weight of 10.9% for the crowded, extracted fish (experimentals) as compared to the controls. In order to determine the effects of crowding on the total lipid content of the crowded fish, lipid analyses were conducted at the conclusion of the growth studies. These studies indicate that the fish in the extracted system had a greater lipid content than those in the‐non‐extracted system (15.4% v. 10.4% mean lipid). It is proposed that growth inhibiting factors libeerated from the crowded fish may affect the thyroid gland, causing lipid mobilization from the tissues resulting in resulting in lowered total lipid in these animals. Extraction of the aquarium water with activated charcoal removes the growth inhibiting factor, possibly decreasing thyroid function with a resulting higher total lipid content.