Please enable JavaScript.
Coggle requires JavaScript to display documents.
Reproduction
and
Breeding (Factors (Photoperiod & breeding season…
Reproduction
and
Breeding
Female
-
Reproductive process
1) Oogenesis
(produce egg)
2) Ovulation
(release egg)
3) Steroidogenesis
(produce hormone)
4) Fertilization
(union of sperm and ova)
5) Implantation
(embtryo attach to uterine wall)
6) Pregnancy
(fetal growth and development)
7) Parturition
(giving birth)
Reproductive Organs
-
-
-
-
-
-
-
-
Reproductive adaptation
-
Fish
Freshwater fish
a) Demersal eggs
b) long incubation period
c) small number of eggs spawn
d) larger and less vulnerable larvae
e) has short life cycle
f) rapid turnover of generation
g) less larval forms
h) development involve larger and yolkier eggs (molluscs) / brood pouches (crustacean water flea)
i) direct insemination
j) protective dormant stage than shelled eggs
Marine fish
a) buoyant/pelagic eggs
b) short incubation period
c) large number of eggs spawn
d) vulnerable larvae
e) use both asexual and sexual modes reproduction
f) large number of invertebrates are hermaphrodite because some have ovotestis
e) direct sex change (in shrimp/anemone fish)
-
Signs of Estrus
-
-
Red, swollen vulva of a female in heat
-
-
Follicular growth
1) Oogonia
(enters prophase of first meiotic division
2)Oocytes
(growth bigger in size in resting phase)
3)Primary follicles
(grow layer of cell called granulosa cells and form a mucopolysaccharide layer called zona pelucida)
4)Secondary follicle
5) Undergo Ovulation