Testicular Steroidogenesis and Locomotor Activity Are Regulated by Gonadotropin-Inhibitory Hormone in Male European Sea Bass
Fig 2
Histological analysis of testicles of European sea bass at end of the experiment (February, spermiation).
Full spermiating control fish (A) with lobules mostly filled with sperm (inset). Gnih-1 (B) and Gnih-2 (C) treated fish testicles exhibiting only isolated clusters of sperm and abundant type A spermatogonia (SgA, insets). Bars 50 μm, 100 μm (inset in A) and 10 μm (insets in B and C).