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Thyroid function of steatitis-affected Mozambique tilapia Oreochromis mossambicus from a sub-tropical African reservoir

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dc.contributor.author Dabrowski, J
dc.contributor.author Oberholster, Paul J
dc.contributor.author Steyl, J
dc.contributor.author Osthoff, G
dc.contributor.author Hugo, A
dc.contributor.author Power, DM
dc.contributor.author Van Wyk, JH
dc.date.accessioned 2017-11-10T10:00:35Z
dc.date.available 2017-11-10T10:00:35Z
dc.date.issued 2017-07
dc.identifier.citation Dabrowski, J. et al. 2017. Thyroid function of steatitis-affected Mozambique tilapia Oreochromis mossambicus from a sub-tropical African reservoir. Diseases of Aquatic Organisms, vol. 125(2): 101-113 en_US
dc.identifier.issn 0177-5103
dc.identifier.uri doi: 10.3354/dao03138
dc.identifier.uri https://www.ncbi.nlm.nih.gov/pubmed/28737156
dc.identifier.uri http://www.int-res.com/articles/dao2017/125/d125p101.pdf
dc.identifier.uri http://hdl.handle.net/10204/9763
dc.description Copyright: 2017 Inter-Research. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, kindly consult the publisher's website. en_US
dc.description.abstract Thyroid function and nutritional indicators were measured in obese, steatitis-affected Mozambique tilapia Oreochromis mossambicus from Loskop Reservoir (LR), South Africa. Plasma thyroid hormones (especially T3) and thyroid follicle histomorphology revealed high levels of activity in every aspect of the thyroid cascade measured in fish from LR compared to a reference population of steatitis-free fish. Concurrent measurements of nutritional state including plasma lipids, liver lipid content and hepatocyte size showed that fish from LR had significant energy stores indicative of abundant nutritional intake. There were distinct sex and seasonal differences, with the highest plasma lipids and T3 levels observed in steatitis-affected females during spring and summer. Positive correlations were observed between plasma lipids (especially cholesterol) and T3 concentrations in fish from both populations, indicating a link between lipid metabolism and thyroid function. There was no direct evidence of thyroid disruption, but this cannot be ruled out until further research determines the factors that underlie the homeostatic shift leading to elevated plasma and liver lipids and T3 levels in steatitis-affected tilapia. en_US
dc.language.iso en en_US
dc.publisher Inter-Research, Germany en_US
dc.relation.ispartofseries Worklist;19753
dc.subject Thyroid follicle en_US
dc.subject Pansteatitis en_US
dc.subject Obesity en_US
dc.subject Yellow fat disease en_US
dc.subject Olifants River en_US
dc.subject Loskop reservoir en_US
dc.title Thyroid function of steatitis-affected Mozambique tilapia Oreochromis mossambicus from a sub-tropical African reservoir en_US
dc.type Article en_US


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