Temporal changes in Sander vitreus egg thiamine levels
Abstract:Thiamine pyrophosphate was the predominant form of thiamine present initially in walleye Sander vitreus eggs from two spawning locations in Lake Oahe, South Dakota, U.S.A. Total thiamine content in the eggs at fertilization was 5·18 and 7·97 nmol g−1 for eggs from the Moreau and Grand River spawning sites respectively, and egg thiamine content in all its forms dropped dramatically at the next sampling period of 48 temperature units (TU). Thiamine values did not significantly drop after the 48 TU period, but mean total thiamine composition was < 0·9 nmol g−1 at the last sampling date (156 TU) just prior to hatching.
Document Type: Research Article
Affiliations: 1: South Dakota Department of Game, Fish and Parks, McNenny State Fish Hatchery, 19619 Trout Loop, Spearfish, South Dakota 57783, U.S.A., 2: Department of Chemistry, Black Hills State University, 1200 University Spearfish, South Dakota 57799, U.S.A. and 3: South Dakota Department of Game, Fish and Parks, Blue Dog State Fish Hatchery, 44437 139 A Street, Waubay, South Dakota 57273, U.S.A.
Publication date: October 1, 2005