Changes

Jump to navigation Jump to search
Line 1: Line 1: −
<big><center>[[Reproductive System|'''BACK TO REPRODUCTIVE SYSTEM''']]</center></big>
+
== Lizards (Squamata) ==
   −
<big><center>[[Reproductive_System#Exotics|'''BACK TO EXOTICS''']]</center></big>
+
=== Male ===
   −
<big><center>[[Exotics_-_Reptile_Reproductive_Anatomy_and_Physiology_-_Anatomy_%26_Physiology|'''BACK TO REPTILE REPRODUCTIVE ANATOMY & PHYSIOLOGY''']]</center></big>
+
[[Image:Reproductive Tract Male Lizard.jpg|thumb|right|150px|<p>Anatomy of the Male Lizard</p><sup> © L.Wilkie 2008</sup>]]
 +
[[Image:Lateral Male Chameleon.jpg|thumb|right|150px|<p>Lateral View of the Male Chameleon</p><sup> © L.Wilkie 2008</sup>]]
   −
 
+
==== Testes ====
 
  −
= Lizards (Squamata) =
  −
 
  −
 
  −
== Male ==
  −
 
  −
 
  −
=== Testes ===
      
* Located cranial to the kidneys.
 
* Located cranial to the kidneys.
Line 23: Line 16:  
** Has its own testicular blood vessels.
 
** Has its own testicular blood vessels.
   −
=== Phallus ===
+
==== Phallus ====
    
* Paired hemipenes
 
* Paired hemipenes
Line 36: Line 29:  
== Female ==
 
== Female ==
   −
 
+
[[Image:Reproductive Tract Female Lizard.jpg|thumb|right|150px|<p>Anatomy of the Female Lizard</p><sup> © L.Wilkie 2008</sup>]]
 +
[[Image:Ventral Female Lizard.jpg|thumb|right|150px|<p>Ventral View of the Female Lizard</p><sup> © L.Wilkie 2008</sup>]]
 
=== Ovary ===
 
=== Ovary ===
   Line 88: Line 82:     
== Male ==
 
== Male ==
 +
 +
[[Image:Snake Anatomy male.png|thumb|right|150px|<p>Anatomy of the Male Snake:  (1. Oesophagus 2. Trachea 3. Tracheal lungs 4. Rudimentary left lung 5. Right lung 6. Heart 7. Liver 8. Stomach 9. Air sac 10. Gallbladder 11. Pancreas 12. Spleen 13. Intestine 14. Testes 15. Kidneys )
 +
</p><sup> ©RVC 2008</sup>]]
    
=== Testes ===
 
=== Testes ===
Line 108: Line 105:     
== Female ==
 
== Female ==
 +
 +
Female snakes can be oviparous, or viviparous.
    
=== Ovary ===
 
=== Ovary ===
Line 117: Line 116:     
=== Sperm Storage ===
 
=== Sperm Storage ===
 +
 +
* Some female snakes can store sperm in a cavity lined by mucosa glands near the top of the oviduct.
 +
** Stored here until conditions are right.
 +
* Can be stored for months or even years.
 +
** Thus snakes may suddenly appear fertile in abscence of a male.
    
=== Maternal Behaviour ===
 
=== Maternal Behaviour ===
 +
 +
The '''Indian Python''' is the only reptile to exibit maternal behaviour.  This can be achieved owing to her large body size.
 +
* Generate a 7ºC increase in heat by spasmodic contractions of muscles as they coil around the eggs.
 +
* Coil tightly around the egg mass to prevent heat loss from the eggs.
 +
* Unlike mammalian shivering, the muscle contractions are coordinated.
 +
* Metabolic rate of the mother increases 20-fold.
    
== Breeding Season ==
 
== Breeding Season ==
Line 132: Line 142:     
== Copulation ==
 
== Copulation ==
 +
 +
* Male initates courtship by moving his body over the female and rubbing his tail against her.
 +
* If female is receptive, she dilates her cloaca and raises her tail.
 +
* Copulation lasts 2-20 hours.
 +
* During copulation one hemipene is evaginated and inserted into the female cloaca.
 +
* Hemipene has spines and ridges that enable it to remain in the cloaca for a long period of time.
 +
* Hemipene is withdrawn at the end of copulation by contraction of the retractor muscle.
 +
* During multiple mating, the male can use the left and right hemipene alternately.
 +
 +
 +
[[Category:Exotic Reproduction]]
 +
[[Category:Bullet Points]]
Author, Donkey, Bureaucrats, Administrators
53,803

edits

Navigation menu