Pauley, 1988



Citation


No detailed citation.

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Oncorhynchus keta Spawning conditions Mating system After the depression is complete, the female and dominant male enter the redd and simultaneously extrude eggs and milt. Not all eggs are deposited at one time, as multiple egg pockets are made No category
Oncorhynchus keta Spawning conditions Spawning substrate Gravel substrate Lithophils
Oncorhynchus keta Spawning conditions Spawning site preparation The female chum salmon excavates the redd in gravel by turning to one side and rapidly flexing her body, creating water current and removing gravel with the caudal fin Susbtrate chooser
Oncorhynchus keta Spawning conditions Spawning period duration The time spent by adults in freshwater (time of stream entry to death) to be 11 to 18 days 11.0 weeks
Oncorhynchus keta Spawning conditions Spawning depth The average water depth over chum salmon redds in Oregon streams was 30 cm, whilein Washington streams it ranged from 23 to 46 cm 30.0 m
Oncorhynchus keta Spawning conditions Spawning migration distance Most chum salmon spawn above the saltwater zone but within 200 km of the sea, although some chum salmon have been reported to migrate up to 322 k upstream to spawn 200.0 km
Oncorhynchus keta Spawning conditions Spawning migration period Chum salmon are the last of the Pacific salmon to return to their natal streams, usually leaving the marine waters in summer and fall to begin their upstream migration ['August', 'July', 'September']
Oncorhynchus keta Female Absolute fecundity Average 2-3, range 0.9-8.0 2.5 thousand eggs
Oncorhynchus keta Larvae Temperature during larval development Chum salmon fry prefer tempratures of 12 to 14°C and avoid temperatures above 15°C 12.0 °C
Oncorhynchus keta Larvae Reaction to light After hatching, the larvae with yolk sacs attached (alevins) remain in the gravel Photopositive
Oncorhynchus keta Spawning conditions Homing Return to the stream in which they hatched Present
Oncorhynchus keta Larvae Full yolk-sac resorption The yolk sac are fully absorbed 30 to 50 days after hatching 30.0 °C * day
Oncorhynchus keta Spawning conditions Parity Die after spawning Semelparous