4,503
edits
Changes
Chinchilla Reproduction - Anatomy & Physiology (view source)
Revision as of 11:27, 21 July 2008
, 11:27, 21 July 2008no edit summary
* [[Chinchilla -Male- Anatomy & Physiology|Male]]
* [[Chinchilla -Male- Anatomy & Physiology|Male]]
* [[Chinchilla -Female- Anatomy & Physiology|Female]]
* [[Chinchilla -Female- Anatomy & Physiology|Female]]
= MALE =
== Scrotum and Testes ==
* Only a very slight scrotal region is visible externally (no true scrotum).
* Thin-walled '''scrotal diverticula''' extend cranially on either side of the base of the penis.
* Each diverticulum is occupied by the tail of the '''epididymis'''.
* On either side of the anus are two '''postanal sacs'''.
** Caudal epididymis can lie in the postanal sacs.
* '''Testes''' and head of the '''epididymis''' is in the region of the '''inguinal ring'''.
* Large fat body extends cranially into the abdominal cavity from the cranial pole of each testis.
----
== Accessory Sex Glands==
* '''Vesicular glands''' are very long and tubular.
* '''Prostate gland''' has paired large ventral lobes and paired small dorsal lobes.
* '''Bulbourethral glands''' are dorsolateral to '''ischiocavernosus muscles'''.
** Isciocavernosus muscles are enormous, swelling on either side of the rectum and meeting over its top.
----
== Penis ==
* Penis points caudally when relaxed and cranially when [[Reproductive_Behaviour_-_Erection_-_Anatomy_%26_Physiology|erect]].
* 1.5cm in length
* '''Sigmoid flexure'''
* '''Os penis''' in the distal portion.
** The small supporting bone is known as the '''baculum'''.
----
== Copulation ==
* [[Male_Reproductive_Tract_-Spermatogenesis_and_Spermiation_-_Anatomy_%26_Physiology&action|Spermatogenesis]] occurs at about 2-3 months.
* Copulatory maturity is not until about 8 months.
* Breeds all year round.
* '''Copulatory plug''' at mating.