General Parasitology and Helminthology: Male reproductive system

Male reproductive system

MALE REPRODUCTIVE SYSTEM

It consists of single testis, vas deferens, seminal vesicle and ejaculatory duct. These ejaculatory duct opens into the cloaca. In most of the species have one or two spicules.
Spicules are lying in the sheath, which opens into the cloaca, spicules are chitinized, pigmented, they vary in size and shape. The number, size and shape is very important character for identification of species.
Function of spicules: For attachment during copulation and expand the vagina for direct the flow of sperms.
In many species, the wall of the cloaca is provided with cuticular thickening. This thickening assists the spicule movement.
Cuticular thickening on the dorsal wall of cloaca is called as ‘gubernaculum’, cuticular thickening on the ventral wall of cloaca is called as telamon.

Male Caudal bursa Nematode-Male_reproductive_system

Last modified: Tuesday, 19 June 2012, 7:32 AM

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VPA 211: General Veterinary Parasitology and Helminthology (3+1)

Male reproductive system

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