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Gerbil Reproduction - Anatomy & Physiology (view source)
Revision as of 12:12, 3 September 2008
, 12:12, 3 September 2008no edit summary
{{toplink
|backcolour =EED2EE
|linkpage =Reproductive System - Anatomy & Physiology
|linktext =Reproductive System
|maplink = Reproductive System (Content Map) - Anatomy & Physiology
|pagetype =Anatomy
= Male =
|sublink1=Reproductive System - Anatomy & Physiology#Small Domestic Mammals
|subtext1=SMALL DOMESTIC MAMMALS
}}
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== Male ==
Anogenital distance in the adult is ~10mm (twice that of the female).
Anogenital distance in the adult is ~10mm (twice that of the female).
== Penis ==
=== Penis ===
* Os penis lies within the tissue of the penis.
* Os penis lies within the tissue of the penis.
== Testes ==
=== Testes ===
* Two testes in an external scrotum.
* Two testes in an external scrotum.
* In the young animal, scrotum is obvious and dark in colour.
* In the young animal, scrotum is obvious and dark in colour.
== Reproductive Behaviour ==
=== Reproductive Behaviour ===
* Abdominal sebacious gland is large and apparent at ~4 weeks.
* Abdominal sebacious gland is large and apparent at ~4 weeks.
== Mammary Gland==
=== Mammary Gland===
* Teats are absent.
* Teats are absent.
== Female ==
= Female =
=== Reproductive Tract ===
== Reproductive Tract ==
* [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Bicornuate uterus]]
* [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Bicornuate uterus]]
== Puberty and Sexual Maturity ==
=== Puberty and Sexual Maturity ===
* Sexual maturity is at ~9-12 weeks.
* Sexual maturity is at ~9-12 weeks.
== Oestrous Cyclicity ==
=== Oestrous Cyclicity ===
* Polyoestrous
* Polyoestrous
* Spontaneous [[The_Ovary_-_Ovulation_-_Anatomy_%26_Physiology|ovulator]].
* Spontaneous [[The_Ovary_-_Ovulation_-_Anatomy_%26_Physiology|ovulator]].
=== Breeding Characteristics ===
== Breeding Characteristics ==
* Monogamous (in contrast to [[Small_Mammals_-Rat-_Anatomy_%26_Physiology|rats]] and [[Small_Mammals_-Mouse-_Anatomy_%26_Physiology|mice]]).
* Monogamous (in contrast to [[Small_Mammals_-Rat-_Anatomy_%26_Physiology|rats]] and [[Small_Mammals_-Mouse-_Anatomy_%26_Physiology|mice]]).
* Copulation plug is small and lies deep in the [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]], so cannot easily be detected.
* Copulation plug is small and lies deep in the [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]], so cannot easily be detected.
=== Gestation and Offspring===
== Gestation and Offspring==
==== Gestation ====
=== Gestation ===
* [[Reproductive_System#Gestation|Gestation]] period is 22-26 days.
* [[Reproductive_System#Gestation|Gestation]] period is 22-26 days.
* Pseudopregnancy may occur.
* Pseudopregnancy may occur.
=== Litter ===
==== Litter ====
* Mean litter size is 4-5.
* Mean litter size is 4-5.
** Cannibalisation/abandonment is rare.
** Cannibalisation/abandonment is rare.
== Mammary Gland ==
=== Mammary Gland ===
* 4 pairs of teats.
* 4 pairs of teats.