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3 results for “Leporinus piau”
FIGURE 3 in Comparative analysis of the reproductive activity of Leporinus piau (Characiformes: Anostomidae) in lentic and lotic environments
FIGURE 3 | Bimonthly distribution of stages of gonadal maturation of female and male Leporinus piau in sections 1 and 2 of the São Francisco River (SFR) basin from May 2015 to April 2016.
FIGURE 2 in Comparative analysis of the reproductive activity of Leporinus piau (Characiformes: Anostomidae) in lentic and lotic environments
FIGURE 2 | Histological sections of testes of Leporinus piau in different stages of gonadal maturation stained by HE. (A) At rest (M1), containing only spermatogonia (SPG) and lumen of closed seminiferous tubules. (B) Initiation of maturation with a small number of spermatozoa (SPZ) in the lumen of the seminiferous tubules. (C) Maturation/mature (M2), with seminiferous tubules filled with spermatozoa (SPZ). (D) Spent (M3), with the lumen of the seminiferous tubules open and an appreciable amount of spermatozoa. Bars: A and D = 40µm; B and C = 200µm.
FIGURE 1 in Comparative analysis of the reproductive activity of Leporinus piau (Characiformes: Anostomidae) in lentic and lotic environments
FIGURE 1 | Histological sections of ovaries of Leporinus piau stained by HE. (A) Ovary in rest (F1) with initial perinucleolar oocytes (O1) containing basophilic cytoplasm and nucleus with various nucleoli and advanced perinucleolar ovocytes (O2) containing finely granular cytoplasm and nucleus with nucleoli close to the nuclear envelope. (B) Beginning of maturation with the appearance of pre-vitellogenic follicles with characteristic cortical alveoli (O3) in the peripheral ooplasm. (C) Maturation/mature (F2) with vitellogenic oocyte (O4) and cytoplasm filled with yolk globules, thin zona radiata (ZR), and squamous follicular cells. (D) Spawned (F3) with post-ovulatory follicles (POF) alongside follicles at all stages of development. (E) Detail of post-ovulatory follicle (POF). (F) Detail of atresic follicle (AF). Bars: A and B = 200µm; C = 300µm; D and F = 150µm; E = 50µm.
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