TITLE:
Landlocked Fall Chinook Salmon Egg Storage for Delayed Fertilization
AUTHORS:
Hunter Eide, Michael E. Barnes
KEYWORDS:
Delayed Fertilization, Chinook Salmon, Egg Storage, Oncorhynchus tshawytscha
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.11 No.5,
May
14,
2020
ABSTRACT: Delayed fertilization of salmonid eggs can be a
useful option to enhance the efficiency of artificial spawning operations. This
experiment examined the fertility of landlocked fall Chinook salmon (Oncorhynchus
tshawytscha) eggs stored for various times after removal from female
broodstock. Fertilization occurred either immediately after spawning or the
eggs were stored with oxygen at 11°C and fertilized at 4, 6, 8, 12, or 20 hours
post-spawn. Survival to the eyed stage of egg development was significantly
greater in the eggs fertilized immediately or after four, six, or eight hours
of storage compared to those eggs stored for 12 or 20 hours prior to
fertilization (P = 0.024). Survival to hatch was also significantly different
(P = 0.018) and followed the same pattern. This study is the first to document
the successful fertilization of landlocked fall Chinook salmon eggs after eight
hours of storage.