Beacham and Murray, 1987



Citation


No detailed citation.

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Oncorhynchus keta Spawning conditions Spawning water type Habitat ranging from tidal areas, to small streams only a few kilometres in length, to the mainstreams of large rivers over 200 km from salt water No category
Oncorhynchus keta Male Male sexual dimorphism Males had larger heads, thicker caudal peduncles, and larger dorsal fins than females, but females had larger anal fins than males Absent
Oncorhynchus keta Egg Incubation time In Central coast: time to 50% hatching 186.8 [At 2.2°C], 124.5 [4.1°C] and 69.3 [8.1°C] 50.0 days
Oncorhynchus keta Female Age at sexual maturity Range from 2 to 6 yr, with 3 and 4 yr being the dominant ages of maturity [Both sex] 2.0 years
Oncorhynchus gorbuscha Egg Temperature for incubation The embryos were incubated at 15°C for 10 days until epiloby was complete, then the temperature was lowered 0.5°C every 2 days until a 9°C incubation temperature was obtained, and the embryos were maintained at 9°C until hatching 15.0 °C
Oncorhynchus keta Egg Temperature for incubation Highest embryo survival rates for most stocks were recorded at an incubation temperature of 8°C, while the lowest were at 2°C 8.0 °C
Oncorhynchus keta Spawning conditions Spawning migration distance Habitat ranging from tidal areas, to small streams only a few kilometres in length, to the mainstreams of large rivers over 200 km from salt water 200.0 km
Oncorhynchus keta Egg Egg size after water-hardening Water hardened diameter means range between different populations from 7.89 to 8.59 7.89 mm
Oncorhynchus keta Spawning conditions Spawning season As early as July in northern and central areas of British Columbia and as late as January in the southern region ['January', 'July']
Oncorhynchus gorbuscha Larvae Temperature during larval development Once hatching was complete, the temperature in the incubator was increased 0.5°C every 2 days until a target of 13.5°C was reached, and then the alevins were maintained at this temperature until 50% had the yolk sac completely covered wtih chromatophores 0.5 °C
Oncorhynchus keta Larvae Temperature during larval development As with the embryo, the highest alevin survival rates were recorded at an incubation temperature of 8°C, while the lowest were recorded at 2°C 8.0 °C
Oncorhynchus keta Spawning conditions Homing Return to spawn to their natal streams Present
Oncorhynchus keta Larvae Full yolk-sac resorption In Central coast: time to 50% emergence 327.6-186.8 [At 2.2°C], 204.1-124.5 [4.1°C] and 132.3-69.3 [8.1°C] 257.2 °C * day
Oncorhynchus keta Female Length at sexual maturity In Central coast, for females, mean size of 49-53.5 [Age 3], 53.1-59 [Age 4] and 63.2 [Age 5] 51.25 cm
Oncorhynchus keta Male Length at sexual maturity In Central coast, for males, mean size of 49.2-56.7 [Age 3], 53.8-61.3 [Age 4] and 66.8 [Age 5] 52.95 cm
Oncorhynchus keta Larvae Initial larval size Alevins hatchings at 8°C were the longest 22.9 mm, those at 4°C slightly shorter (22.5), and those at 12°C (22.2), and 2°C (20.6) 8.0 mm
Oncorhynchus keta Female Age at sexual maturity Range from 2 to 6 yr, with 3 and 4 yr being the dominant ages of maturity [Both sex] 2.0 year