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Sunday, October 27, 2019

Female Reproductive System of Cockroach



1.     The female reproductive system consists of pair of ovaries, lying laterally in the 4th – 6th abdominal segments.
2.     Each ovary is formed of a group of eight ovarioles, consists of various stages of developing ova.
3.     From each ovary arise delicate duct called oviducts.
4.     Each oviduct unite into a single median oviduct, also called vagina.
5.     Vagina opens into the genital chamber.
6.     A pair of spermatheca is present in the 6th segment dorsally, which opens into the genital chamber.
7.     Spermatheca consists of finger like projection called diverticulum and bag like ampulla.
8.     Sperms are stored into the diverticulum which are received form male during copulation. Ampulla contain sperm activation fluid. 
9.     Sperms are transferred through spermatophores.
10.                        Fertilized eggs are enclosed in capsules called ootheca.
11.                        Ootheca is a dark reddish to blackish brown capsule.
12.                        Ootheca is laid in warm and damp places.

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