Line 1: |
Line 1: |
− | <big><center>[[Reproductive System|'''BACK TO REPRODUCTIVE SYSTEM''']]</center></big>
| |
− |
| |
− | <big><center>[[Reproductive_System#Exotics|'''BACK TO EXOTICS''']]</center></big>
| |
− |
| |
− | <big><center>[[Exotics_-_Avian_Reproductive_Anatomy_and_Physiology_-_Anatomy_%26_Physiology|'''BACK TO AVIAN REPRODUCTIVE ANATOMY & PHYSIOLOGY''']]</center></big>
| |
− |
| |
− |
| |
− |
| |
− |
| |
| == Breeding Cycles == | | == Breeding Cycles == |
| * Classified according to length of cycle and the time of year when the species becomes reproductively active. | | * Classified according to length of cycle and the time of year when the species becomes reproductively active. |
Line 16: |
Line 7: |
| * Usually lay one or more eggs in a clutch and terminate laying to incubate the eggs. | | * Usually lay one or more eggs in a clutch and terminate laying to incubate the eggs. |
| * Number of eggs per clutch and total number of clutches vary with species and season. | | * Number of eggs per clutch and total number of clutches vary with species and season. |
− |
| |
− | ----
| |
| | | |
| == Endocrine Control == | | == Endocrine Control == |
| * In females, '''FSH''' is mainly responsible for follicular growth. | | * In females, '''FSH''' is mainly responsible for follicular growth. |
| * Developing follicles produce '''Oestrogen''' from '''Theca and interstitial cells''' and '''Progesterone''' from '''Granulosa cells'''. | | * Developing follicles produce '''Oestrogen''' from '''Theca and interstitial cells''' and '''Progesterone''' from '''Granulosa cells'''. |
− | * Increasing levels of Oestrogen stimulate an '''LH surge''' to cause the follicle to split and release the primary oocyte. | + | * Increasing levels of Oestrogen stimulate an '''LH surge''' to cause the [[Follicles - Anatomy & Physiology|follicle]] to split and release the primary [[Oogenesis - Anatomy & Physiology|oocyte]]. |
− | * '''Oestrogen mobilizes calcium''' from the bone, increasing plasma concentrations for egg formation. | + | * '''Oestrogen mobilizes calcium''' from the bone, increasing plasma concentrations for [[Egg Composition and Formation - Anatomy & Physiology|egg formation]]. |
| * '''Progesterone''' secretion continues to inhibit further ovulation and stimulate behavioural changes associated with '''broodiness and incubation'''. | | * '''Progesterone''' secretion continues to inhibit further ovulation and stimulate behavioural changes associated with '''broodiness and incubation'''. |
| * '''Prolactin''' stimulates the production of '''crop milk''' in male and female columbiformes. | | * '''Prolactin''' stimulates the production of '''crop milk''' in male and female columbiformes. |
| * '''Oviposition''' is controlled by '''prostaglandins and Arginine Vasotocin'''. | | * '''Oviposition''' is controlled by '''prostaglandins and Arginine Vasotocin'''. |
− |
| |
− | ----
| |
| | | |
| == Ovulation== | | == Ovulation== |
| * Number of ovulations varies with species, mostly lay one clutch a year. | | * Number of ovulations varies with species, mostly lay one clutch a year. |
− | * Infundibulum catches the oocyte, facillitated by the left abdominal air sac which tightly encloses the ovary. | + | * [[Avian Female Reproductive System#Infundibulum|Infundibulum]] catches the [[Oogenesis - Anatomy & Physiology|oocyte]], facillitated by the left abdominal air sac which tightly encloses the [[Avian Female Reproductive System#Ovary|ovary]]. |
− | * Once ovulation has taken place, the follicle shrinks and regresses. | + | * Once ovulation has taken place, the [[Follicles - Anatomy & Physiology|follicle]] shrinks and regresses. |
− | * '''No corpus luteum''' remains, as there is no developing embryo to maintain. | + | * '''No [[Corpus Luteum - Anatomy & Physiology|corpus luteum]]''' remains, as there is no developing embryo to maintain. |
− | | |
− | ----
| |
| | | |
| == Oviposition == | | == Oviposition == |
| * Expulsion of the egg | | * Expulsion of the egg |
− | * Contraction of the Uterine shell gland (Vagina) with relaxation of abdominal muscles. | + | * Contraction of the [[Avian Female Reproductive System#Vagina|Uterine shell gland (Vagina)]] with relaxation of abdominal muscles. |
| * Minutes to hours | | * Minutes to hours |
| ** Cuckoos lay their eggs in seconds so they can get away before the host returns. | | ** Cuckoos lay their eggs in seconds so they can get away before the host returns. |
| | | |
| + | == Post-Lay == |
| + | |
| + | * Enters a non-breeding state whilst incubating and caring for the brood. |
| + | * Resting ovary appears shrunken, similar to the juvenile [[Avian Female Reproductive System#Ovary|ovary]]. |
| + | * [[Avian Female Reproductive System#Oviduct|Oviduct]] regresses into an inconspicous, narrow tube. |
| | | |
− | ----
| |
| | | |
− | == Post-Lay ==
| |
| | | |
− | * Enters a non-breeding state whilst incubating and caring for the brood.
| + | [[Category:Avian Reproduction]] |
− | * Resting ovary appears shrunken, similar to the juvenile ovary.
| + | [[Category:Bullet Points]] |
− | * Oviduct regresses into an inconspicous, narrow tube.
| |