Histological studies on oogenesis and ovarian development of Pomacea canaliculate

Objective The main typical characteristics of each ovary developmental stage of Pomacea canaliculate were studied.

Method Micromorphology of ovarian developmental process and each stage of oocyte development of invader P.canaliculate were observed using histologic sectioning and hematoxylin-eosin staining methods.

Result The ovarian developmental process of P.canaliculata is divided into five stages including proliferating stage, growing stage, maturing stage, spawning stage and recovering stage, based on different histological characteristics.During ovarian development, ovum forming cells experienced a series of morphological and structural changes, and eventually developed into mature eggs.The formation of P.canaliculata ovum consisted the oogonium stage, early yolk synthesis stage, late yolk synthesis stage and maturation stage.

Conclusion The ovarian of P.canaliculata is a tubular branching gland, the oogonium goes through five development stages to form the mature ovum, and the structural and physiological characteristics of its ovarian development provide a basis for high fertility of P.canaliculata.