3.4 Individual-level environmental
control
For female Sakhalin taimen, between-year correlations of water
temperature reached a maximum in the critical time window of 160–200 h
(6.7–8.3 days) prior to each spawner’s arrival at a tributary site
(r = 0.665, P = 0.001, Fig. 4a). The maximum correlation
of water level occurred in the critical time window of 80–224 h
(3.3–9.3 days) for the females (r = 0.602, P = 0.014,
Fig. 4b). For males, however, neither water temperature nor water level
produced significant maximum correlations (r = 0.484 and 0.508,
respectively; P > 0.05).