The two strains have spawn times that differ by approximately 1 month so it was not possible to create reciprocal hybrids in this first generation of fish captured from wild populations.
Learn the routes of the map and the item spawn times.
Distance matrices were generated using R (dist function) for the following variables: mean April temperature, mean April salinity, spawning time temperature, spawning time salinity, and latitude.
Further work relating spawning migration timing, actual spawning time, development rate, emergence dates and fry size distributions based on pedigrees, PIT tagging, PIT antennas and detailed temperature maps should help clarify sources of variation in fry size distributions.
In addition, we included the biologically relevant interaction terms mean April temperature × mean April Salinity, and spawning time temperature × spawning time salinity.
In each case, the explanatory variables were: distance from the entrance to the Baltic Sea, latitude, mean April temperature, mean April salinity, spawning time temperature, and spawning time salinity.
In total we had 806 alleles which were tested against the following explanatory variables: latitude, distance from the entrance to the Baltic, mean April temperature, mean April salinity, mean spawning time temperature and mean spawning time salinity.
Their colors are much more vivid, not just at spawning time".
Biology Look Homeward, Salmon Pacific salmon are born in freshwater rivers that empty into the ocean, and then — in migration patterns that amaze and baffle — often return to their rivers of birth at spawning time.
Whereas, minimum levels were found from spring to early summer, during active gametogenic period and spawning time.
