Histology study of Asian clam (corbicula fluminea) reproductive gonad

Corbicula fluminea is freshwater clam that can endure with various climate and environment atmosphere. For morphology, the species is yellowish brown at outer shell and the inside is white, while the umbone area is light orange and there is purple flash along the teeth. An experiment was conducted in order to investigate oogenesis, spermatogenesis and the sexual cycle of the bivalve Corbicula fuminea. 40 samples
were collected from Kampung Tok Uh, Tumpat, Kelantan in September 2017. Corbiculidea clam, Corbicula fluminea were assessed by histological analysis of gonad. Other than that, the stages of development of sex gonad were investigated
throughout light microscope. Based on result obtained, 19 (47.5%) of Corbicula fluminea specimens were males, 15 (37.5%) females and 6 (15%) were hermaphrodites with some stages of reproductive cycle found.