external vs internal fertilization (in CC amphib glossary)

fishkeeper

New member
Joined
May 7, 2007
Messages
563
Reaction score
11
Points
0
Age
31
Country
United States
Display Name
Joseph S
simple defs here.
 

Jan

Site Contributor
Joined
Mar 3, 2006
Messages
1,626
Reaction score
33
Points
48
Location
Philadelphia, PA
Country
United States
Sexual reproduction is achieved through the process of fertilization i.e., the fusing of cell nuclei from a male gamete (sperm) and a female gamete (egg) to produce a zygote which through various stages of development produces an adult. Fertilization is achieved through one of two methods:

Internal fertilization - The fusion of the male and female gametes occurs within the female’s reproductive tract either through copulation (mammals) or [cloacal] fertilization (examples include [caecilians], most [salamanders] and many reptiles).

External fertilization – The fusion of the male and female gametes occurs outside of the animals’ body usually in a watery environment. These animals spawn or release their gametes into the water and by random chance the gametes join and fuse. [Anurans] and egg-laying fish are examples of animals that reproduce in this fashion.
 

Jennewt

Administrator
Staff member
Joined
May 27, 2005
Messages
12,421
Reaction score
85
Points
48
Location
USA
Country
United States
Great, I'll move this to the "dones".
 
General chit-chat
Help Users
  • No one is chatting at the moment.
    blackxreptiles: there a salamander farm in the US? +1
    Top