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This study investigates sex steroids, gonadal histology and some biological indices of fall and spring spawning migrants of Caspian lamprey Caspiomyzon wagneri (Kessler, 1870). Blood and gonad(More)
Maturing degree-days, gonadal histology, and changes in serum sex steroids (progesterone, P; testosterone, T; and 17β-estradiol, E2) were examined in maturing and mature spring migrant Caspian(More)