title: Effects of light on trace elements and triiodothyronine levels in plasma of mirror carp (Cyprinus carpio).
abstract: The changes of copper, zinc, iron, magnesium, manganese, and triiodothyronine as a result of short- and long-term isothermal exposure to light were determined in the plasma of mirror carp (Cyprinus carpio). Two groups of fish were subject to a 3-mo treatment that consisted of (1) 8 h of light followed by 16 h of darkness and (2) 16 h of light followed by 8 h of darkness at 25 degrees C. No significant changes were recorded between the two groups at the beginning of the study. After 3 mo, the triiodothyronine and elements levels as well as the growth rates of fish in the long-time exposure period were significantly higher than those in the short-time exposure (p<0.05).
authors.affiliation: Department of Aquaculture, Agriculture Faculty, Science and Art Faculty, Ataturk University, 25240 Erzurum, Turkey.
authors.forename: Ozer
authors.initials: O
authors.lastname: Ayik
authors.forename: Olcay
authors.initials: O
authors.lastname: Hisar
authors.forename: Ilhami
authors.initials: I
authors.lastname: Gulcin
authors.forename: Sukriye
authors.initials: S
authors.lastname: Aras-Hisar
authors.forename: Telat
authors.initials: T
authors.lastname: Yanik
mesh_terms: D000818:Animals; D002347:Carps / Q000097:blood*; D003300:Copper / Q000097:blood; D007501:Iron / Q000097:blood; D008027:Light; D008274:Magnesium / Q000097:blood; D008345:Manganese / Q000097:blood; D017440:Photoperiod; D013696:Temperature; D014131:Trace Elements / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood*; D015032:Zinc / Q000097:blood
chemical_list: D014131:Trace Elements; D014284:Triiodothyronine; D008345:Manganese; D003300:Copper; D007501:Iron; D008274:Magnesium; D015032:Zinc