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Fig. 8. Changes in the levels of gonadotropin (GTH) subunit mRNAs in the pituitary,
and pituitary and plasma levels of follicle-stimulating hormone FSH and
luteinizing hormone LH during upstream migration in 2002. Pre-spawning and
mature adults were collected along their homing pathway from the coast to the
hatchery, as shown in Fig. 1B.
Fish near or at the hatchery almost completed final maturation, so that they
were considered as mature adults. Furthermore, data are compared with those
from maturing adult I in the Bering Sea. Date of sampling and the number of
fish are shown in Table 4.
Value are means ± s.e.m. n.a., not applicable. Significant differences
among sampling points are identified with different letters
(P<0.05 one-way ANOVA and Tukey's test). Asterisks indicate
significant difference (P<0.05) when compared with the maturing
adult 1 in the central Bering Sea.
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