Figure 2 in Confirmation of functional hermaphroditism in six grouper species (Epinephelidae: Epinephelinae) from the Gulf of Mexico

Figure 2. - Histological sections of gonads from five groupers from Campeche Bank (Gabe and Martoja's one-step trichrome stain). A: Mycteroperca venenosa, female in regressing reproductive phase (71.5 cm FL), collected April 2009 at Bajos del Norte, showing atretic follicles in intermediate and advanced atretic stages. B: Mycteroperca microlepis, female in regenerating reproductive phase (97.0 cm FL), collected July 1998 in offshore waters, showing muscle bundles. C: Epinephelus guttatus, transitional individual (50.0 cm FL), collected February 2009 at Bajos del Norte, showing atretic follicles in advanced atretic stage and crypts of spermatocytes and spermatozoa. D: Epinephelus morio, transitional individual (40.5 cm FL), collected February 2003 in offshore waters, showing remnant of the former ovarian lumen, atretic follicles in advanced atretic stage, muscle bundles and crypts of spermatocytes. E: Mycteroperca tigris, transitional individual (48.2 cm FL), collected June 2008 at Bajos del Norte, showing remnant of the former ovarian lumen, atretic follicles in advanced atretic stage, muscle bundles and crypts of spermatocytes. F: Mycteroperca bonaci, transitional individual (121.5 cm FL), collected December 1997 in offshore waters, showing remnant of the former ovarian lumen, muscle bundle and crypts of spermatogonia and spermatocytes. G-H: Mycteroperca venenosa, transitional individual (55.0 cm FL), collected January 2009 at Bajos del Norte, showing muscle bundle and crypts of spermatogonia, spermatocytes and spermatozoa (G); and sperm sinus within gonad capsule (H). AF: atretic follicle; AAS: advanced atretic stage; IAS: intermediate atretic stage; GC: gonadal capsule; L: lumen; MB: muscle bundle; PG: primary growth oocyte; Sc: spermatocyte; Sg: spermatogonia; SS: sperm sinus; Sz: spermatozoa. Scale bars = 50 µm.