On Density of Chum Salmon (Oncorhynchus keta) Eggs in Shallow Matrix Substrate Incubators
- 1 February 1983
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Fisheries and Aquatic Sciences
- Vol. 40 (2) , 185-191
- https://doi.org/10.1139/f83-028
Abstract
Eyed chum salmon (Oncorhynchus keta) eggs were loaded at seven equidistant densities ranging from 10 760 to 75 350 eggs/m2 of gravel into Netarts-type shallow matrix substrate incubators. Egg density did not affect fry survival but altered emergence timing which influenced fry quality. Fry emergence was most premature in the 32 290 and 43 060 eggs/m2 treatments. Early migrants had higher development index values, more variable lipid contents, and lower water contents than peak and late migrants. Results are discussed in relation to economic and biological optimization of hatchery incubation.Key words: Oncorhynchus keta, egg density, gravel incubators, fry survival, fry qualityThis publication has 2 references indexed in Scilit:
- Seawater Adaptation and Parr–Smolt Transformation of Juvenile Atlantic Salmon, Salmo salarJournal of the Fisheries Research Board of Canada, 1978
- Studies of metabolism in embryonic development—II. Biosynthesis of lipids im embroynated trout ovaComparative Biochemistry and Physiology, 1968