Difference between revisions of "Pre-copulatory Behaviour - Anatomy & Physiology"
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* Curling of the upper [[Lips_-_Anatomy_%26_Physiology|lip]] closes the '''nostrils''' and allows negative pressure to form in the '''nasopalatine duct'''. | * Curling of the upper [[Lips_-_Anatomy_%26_Physiology|lip]] closes the '''nostrils''' and allows negative pressure to form in the '''nasopalatine duct'''. | ||
* Flehmen behaviour allows less volatile pheramones to be examined by sensory neurons in the '''vomeronasal organ'''. | * Flehmen behaviour allows less volatile pheramones to be examined by sensory neurons in the '''vomeronasal organ'''. | ||
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+ | * As in the males, females will display flehmen to novel compounds such as fluids associated with the placenta,newborn animals and other volatile materials. | ||
+ | * Frequently displayed by post-parturient females as they make identity discriminations between their own vurses other's neonates. | ||
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Revision as of 14:31, 10 July 2008
Search for Sexual Partner
Species | Bull | Stallion | Ram | Boar | Dog | Tom |
---|---|---|---|---|---|---|
Searching Behaviour | Approach Sexually Active group of Females,Test for Lordosis,Flehmen | Visual Search,Flehmen | Sniffing & Licking of Ano-Genital Region,Nudging Ewe,Flehmen | Moving among Females | Roaming around Territory | Prowling |
Vomeronasal Organ
- Vomeronasal organ is an accessory olfactory organ.
- Connected to two small openings in the anterior roof of the mouth just behind the upper lip.
- Fluid-borne,less volatile chemicals enter the vomeronasal organ through the oral cavity by means of nasopalatine (incisive) ducts.
Flehmen Response
- Some pheramones are less volatile and need to be detected by the vomeronasal organ.
- Bull,ram,stallion,some extent the boar.
- Male closely approaches the source of pheramones and will nuzzle the female genital region.
- Flehmen behaviour is characterized by:
- Head elevation
- Curling of the upper lip.
- Curling of the upper lip closes the nostrils and allows negative pressure to form in the nasopalatine duct.
- Flehmen behaviour allows less volatile pheramones to be examined by sensory neurons in the vomeronasal organ.
- As in the males, females will display flehmen to novel compounds such as fluids associated with the placenta,newborn animals and other volatile materials.
- Frequently displayed by post-parturient females as they make identity discriminations between their own vurses other's neonates.
Courtship
Species | Bull | Stallion | Ram | Boar | Dog | Tom |
---|---|---|---|---|---|---|
Courtship Behaviour | Nuzzling & Licking of Perineal Region,Chin Resting,Testing for Lordosis | High Degree of Excitement | Neck Outstretched,Head held Horizontally | Nuzzling,Teeth Grinding,Foams at Mouth | Sniffing,Licking of Vulva | Biting Queen on Dorsal Neck |
Sexual Arousal
Species | Bull | Stallion | Ram | Boar | Dog | Tom |
---|---|---|---|---|---|---|
Consummation Behaviour | Penile Protrusion,Dribbling of Seminal Fluid with few Spermatozoa,Erection,Attempted Mounts | Penile Protrusion,No Preejaculatory Expulsion of Seminal Fluid | Repeated Dorsal Elevation of Scrotum,Penile Protrusion,Dribbling of Seminal Fluid | Penile Protrusion,Shallow Pelvic Thrusts, Attempted Mounting | Erection,Protrusion of Penis,Mounting | Mounting |