Communications: Blood chemistry of laboratory-reared Golden trout

Journal of Aquatic Animal Health
By: , and 

Links

Abstract

Golden trout Oncorhynchus aguabonita obtained from a wild stock as fertilized eggs were reared in the laboratory for 21 months. The laboratory-reared golden trout in our study reached sexual maturity earlier and grew more rapidly than wild golden trout do (according to the scientific literature). Male fish averaged 35.6 cm in total length and 426 g in weight, and females averaged 36.2 cm and 487 g. All golden trout were sexually mature when used for hematological analysis. The hematological profile (hematocrit, red blood cells, white blood cells, and thrombocytes) of golden trout was similar to that reported elsewhere for other trout species. Male and female golden trout did not have significantly different thrombocyte counts; however, the immobilization treatment used on the fish (anesthesia versus a blow to the head) resulted in significant treatment differences in thrombocyte numbers and interaction effect of sex in treatment for hematocrits. Gravid female golden trout had significantly higher plasma protein and calcium levels than did males. The ionic compositions of plasma (sodium, potassium, calcium, magnesium, copper, zinc, iron, and chloride) and gallbladder bile (calcium and chloride) were similar to those reported for other salmonids.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Communications: Blood chemistry of laboratory-reared Golden trout
Series title Journal of Aquatic Animal Health
DOI 10.1577/1548-8667(1992)004<0218:CBCOLR>2.3.CO;2
Volume 4
Issue 3
Year Published 1992
Language English
Publisher Taylor & Francis
Contributing office(s) Columbia Environmental Research Center
Description 5 p.
First page 218
Last page 222