Difference between revisions of "Chipmunk Reproduction - Anatomy & Physiology"

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== Male ==
+
<big><center>[[Reproductive System|'''BACK TO REPRODUCTIVE SYSTEM''']]</center></big>
  
=== Penis ===
+
<big><center>[[Reproductive_System#Small_Domestic_Mammals|'''BACK TO SMALL DOMESTIC MAMMALS''']]</center></big>
  
* Os penis lies within the tissue of the penis.
 
  
  
=== Testes ===
+
* [[Chipmunk -Male- Anatomy & Physiology|Male]]
 +
* [[Chipmunk -Female- Anatomy & Physiology|Female]]
  
* Two testes in an external scrotum.
 
* Testes descend into the scrotum at the beginning of the mating season (January) and begin spermatogenesis.
 
* Open inguinal canals throughout life.
 
** Allows testes to shrink and return to the abdomen in the non-breeding season.
 
  
=== Puberty and Sexual Maturity ===
 
  
* Sexually mature at 6-7 weeks.
+
= MALE =
  
 +
== Penis ==
  
=== Mammary Gland ===
+
* Os penis lies within the tissue of the penis.
  
* Teats are absent.
+
----
== Female ==
 
  
=== Reproductive Tract ===
+
== Testes ==
  
* [[Uterus - Anatomy & Physiology#Anatomical_Types_of_Uteri|Bicornate uterus]]
+
* Two testes in an external scrotum.
** Short uterine body
+
* Testes descend into the scrotum in January and begin spermatogenesis.
** Single [[Cervix - Anatomy & Physiology|cervix]]
+
* Open inguinal canals throughout life.
 +
** Allows testes to shrink and return to the abdomen in the non-breeding season.
  
 +
----
  
=== Puberty and Sexual Maturity ===
+
== Puberty and Sexual Maturity ==
  
* Sexually mature at 12 months.
+
* Sexually mature at 6-7 weeks.
  
 +
----
  
=== Oestrous Cyclicity ===
+
== Mammary Gland ==
  
* Seasonally Polyoestrous.
+
* Teats are absent.
* Spontaneous ovulator.
+
----
* Breeding season is March-September.
 
* Length of [[Oestrous Cycle - Anatomy & Physiology|oestrous cycle]]: 14 days
 
* '''Oestrus''' lasts three days.
 
* Advertises willingness to mate with persistent chipping noise on the second day of oestrus.
 
 
 
=== Gestation and Offspring ===
 
 
 
==== Gestation ====
 
 
 
* Gestation period 28-32 days.
 
 
 
==== Litter ====
 
 
 
* Litter size 2-6
 
* Altricial young
 
** Weaned at 6-7 weeks
 
 
 
=== Mammary Gland ===
 
 
 
* 4 pairs of teats.
 
 
 
 
 
[[Category:Small Mammal Reproduction]]
 
[[Category:Bullet Points]]
 

Revision as of 11:33, 21 July 2008

BACK TO REPRODUCTIVE SYSTEM
BACK TO SMALL DOMESTIC MAMMALS



MALE

Penis

  • Os penis lies within the tissue of the penis.

Testes

  • Two testes in an external scrotum.
  • Testes descend into the scrotum in January and begin spermatogenesis.
  • Open inguinal canals throughout life.
    • Allows testes to shrink and return to the abdomen in the non-breeding season.

Puberty and Sexual Maturity

  • Sexually mature at 6-7 weeks.

Mammary Gland

  • Teats are absent.