Changes in plasma @entity134 and thyroid hormones and insulin during final maturation and spawning of the XXXX , @entity26962 .

@entity844 @entity1955 @entity53 @entity134 @entity26962 @entity1718 @entity3800 @entity1954
Circulating levels of plasma @entity53 -17 beta, @entity3800 , @entity1955 , @entity1954 , immunoreactive insulin, plasma @entity1718 , and protein were measured at interval during the period of final gonadal maturation, prior to spawning of male and female @entity26962 . Plasma @entity53 levels fluctuated significantly and generally covaried in males and females through time. In females, possibly in relation to environmental changes, mean plasma @entity53 levels peaked four times during the final spawning period but decreased sharply at the time of ovulation. In males, mean plasma @entity53 peaked seven times during the final prespawning period and, in contrast to females, peaked significantly at the time of final spermiation. Plasma @entity3800 were extremely low and covaried in males and females through time. Like plasma @entity134 profiles, there were coordinated changes in plasma @entity1954 and @entity1955 levels in males and females through the prespawning season. There was a slight increase in plasma insulin during the terminal maturation of the lampreys. However, at ovulation, the insulin levels abruptly decreased in females, whereas in males they remained unchanged. Plasma protein and @entity844 levels gradually decreased until ovulation/spermiation. At ovulation plasma @entity844 levels increased.
