The Open Fish Science Journal




(Discontinued)

ISSN: 1874-401X ― Volume 12, 2019
REVIEW ARTICLE

Landlocked Fall Chinook Salmon Maternal Liver and Egg Thiamine Levels in Relation to Reproductive Characteristics



Andrew Doyle1, Michael E. Barnes2, *, Jeremy L. Kientz2, Micheal H. Zehfus3
1 Department Benedictine College Atchison, Kansas, United States
2 McNenny State Fish Hatchery South Dakota Department of Game, Fish and Parks Spearfish, South Dakota, United States
3 Department of Chemistry Black Hills State University, University Spearfish, South Dakota, United States

Abstract

Object:

Landlocked fall Chinook Salmon Oncorhynchus tshawytscha in Lake Oahe, South Dakota, typically experience poor reproductive success.

Introduction:

Salmon diets consist of rainbow smelt Osmerus mordax and other potentially thiaminase-containing fish that could impact reproduction.

Methods:

The thiamine levels of spawning female Salmon, eggs, and reproductive characteristics, were measured in 2000, 2001, 2002, 2003, and 2005.

Results:

Thiamine concentrations varied significantly from year-to-year, with the highest mean values recorded in 2001 at 8.70 nmol/g in maternal livers and 28.80 nmol/g in eggs. Most of the thiamine in the eggs was present as free thiamine, while most of the thiamine in maternal livers was present as thiamine pyrophosphate. The lowest recorded egg total thiamine level was 2.75 nmol/g in 2000. Egg survival to hatch ranged from 20.7% in 2005 to 35.4% in 2002, and was not correlated to egg thiamine levels. Twenty-two spawns experienced total mortality prior to hatch, and had significantly lower egg free thiamine and total thiamine concentrations than eggs from the 77 successful spawns. The eggs from spawns with total mortality were also significantly smaller than those eggs from spawns that did survive, and were produced by females that weighed significantly less. Several small, but significant, correlations were observed between egg size and egg thiamine levels, and female size and liver thiamine.

There was also a significant negative correlation between the number of eggs per spawning female and egg thiamine pyrophosphate, liver thiamine monophosphate, and liver total thiamine levels.

Conclusion:

In general, Lake Oahe Chinook Salmon eggs show little indication of thiamine deficiency in the years sampled, indicating other factors are likely responsible for poor egg survival.

Keywords: Thiamine, Chinook Salmon, Reproduction, Rainbow Smelt, Thiaminase, Lake Oahe.


Article Information


Identifiers and Pagination:

Year: 2017
Volume: 10
First Page: 23
Last Page: 32
Publisher Id: TOFISHSJ-10-23
DOI: 10.2174/1874401X01710010023

Article History:

Received Date: 11/11/2016
Revision Received Date: 04/01/2017
Acceptance Date: 23/01/2017
Electronic publication date: 30/06/2017
Collection year: 2017

© 2017 Doyle et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the McNenny State Fish Hatchery South Dakota Department of Game, Fish and Parks Spearfish, South Dakota, United States, Tel: 605-642-6920, Fax: 605-642-6921; E-mail: mike.barnes@state.sd.us


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