However, even in those species of salmon that may survive to spawn more than once (iteroparity), postspawning mortality is quite high (perhaps as high as 40 to 50%).
然而，即便能够存活下来进行多次繁殖（反复生殖），这些种类的鲑产卵后死亡率也是非常高的（可能高达 40% 至 50%）。