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Hamster Reproduction - Anatomy & Physiology (view source)
Revision as of 12:09, 3 September 2008
, 12:09, 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 ==
The anogenital distance is longer in the male, which has a more prominent genital papilla.
The anogenital distance is longer in the male, which has a more prominent genital papilla.
== Penis ==
=== Penis ===
* Os penis lies within the tissue of the penis.
* Os penis lies within the tissue of the penis.
*** Baculum consists of two lateral prongs and a dorsal prong.
*** Baculum consists of two lateral prongs and a dorsal prong.
== Testes==
=== Testes===
* Two large testes in an external scrotum.
* Two large testes in an external scrotum.
** Testes remain internal.
** Testes remain internal.
== Accessory Sex Glands ==
=== Accessory Sex Glands ===
* Several large [[Male_Reproductive_Tract_-Accessory_Sex_Glands_-_Anatomy_%26_Physiology|accessory glands]] including:
* Several large [[Male_Reproductive_Tract_-Accessory_Sex_Glands_-_Anatomy_%26_Physiology|accessory glands]] including:
* Scent gland on each flank to mark territory.
* Scent gland on each flank to mark territory.
== Mammary Gland==
=== Mammary Gland===
* Teats are absent.
* Teats are absent.
== Female ==
= Female =
=== Reproductive Tract ===
== Reproductive Tract ==
==== Ovary ====
=== Ovary ===
* [[Female_Reproductive_Tract_-The_Ovary_-_Anatomy_%26_Physiology|Ovaries]] are oval in shape, situated dorsolateral to the kidneys.
* [[Female_Reproductive_Tract_-The_Ovary_-_Anatomy_%26_Physiology|Ovaries]] are oval in shape, situated dorsolateral to the kidneys.
** Coils of the ovarian and uterine arteries anastoamose close to the [[Female_Reproductive_Tract_-The_Ovary_-_Anatomy_%26_Physiology|ovary]].
** Coils of the ovarian and uterine arteries anastoamose close to the [[Female_Reproductive_Tract_-The_Ovary_-_Anatomy_%26_Physiology|ovary]].
=== Oviduct ===
==== Oviduct ====
* [[Female_Reproductive_Tract_-The_Oviduct_-_Anatomy_%26_Physiology|Oviduct]] is long and tighly coiled.
* [[Female_Reproductive_Tract_-The_Oviduct_-_Anatomy_%26_Physiology|Oviduct]] is long and tighly coiled.
=== Uterus ===
==== Uterus ====
* [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Duplex Uterus]]
* [[Female_Reproductive_Tract_-The_Uterus_-_Anatomy_%26_Physiology#Anatomical_Types_of_Uteri|Duplex Uterus]]
** Uterine horns remain divided until uniting in a single [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]].
** Uterine horns remain divided until uniting in a single [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]].
=== Vagina ===
==== Vagina ====
* The urinary opening is cranial and the anus is caudal with the vaginal opening in between.
* The urinary opening is cranial and the anus is caudal with the vaginal opening in between.
** Extend caudally, terminating at the level of the vaginal orifice.
** Extend caudally, terminating at the level of the vaginal orifice.
== Oestrous Cyclicity ==
=== Oestrous Cyclicity ===
* Spontaneous [[The_Ovary_-_Ovulation_-_Anatomy_%26_Physiology|ovulator]].
* Spontaneous [[The_Ovary_-_Ovulation_-_Anatomy_%26_Physiology|ovulator]].
* Post-partum oestrus
* Post-partum oestrus
== Copulation ==
=== Copulation ===
* Lasts 30 minutes.
* Lasts 30 minutes.
* Pseudopregnancy can occur after an infertile mating.
* Pseudopregnancy can occur after an infertile mating.
== Mammary Gland ==
=== Mammary Gland ===
* 6 pairs of teats
* 6 pairs of teats
== Breed Differences ==
=== Breed Differences ===
=== Syrian (Golden) hamster ===
==== Syrian (Golden) hamster ====
[[Image:hamster fetus.jpg|thumb|right|150px|Syrian Hamster Foetus during Late Gestation- Courtesy of Andrew Crook, Copyright RVC 2008]]
[[Image:hamster fetus.jpg|thumb|right|150px|Syrian Hamster Foetus during Late Gestation- Courtesy of Andrew Crook, Copyright RVC 2008]]
** Weaned at 21-28 days.
** Weaned at 21-28 days.
=== Russian Hamster ===
==== Russian Hamster ====
* Sexually mature at 6-8 weeks
* Sexually mature at 6-8 weeks
** Weaned at 16-18 days.
** Weaned at 16-18 days.
=== Chinese Hamster ===
==== Chinese Hamster ====
* Sexually mature at 7-14 weeks
* Sexually mature at 7-14 weeks
** Will cannabilise young if disturbed.
** Will cannabilise young if disturbed.
** Weaned at 21 days.
** Weaned at 21 days.