Red-eyed tree frogs lay eggs on leaves suspended above ponds. When the eggs hatch, the tadpoles fall into the pond, states the University of Wisconsin's BioWeb. Gray tree frogs lay eggs in swamps, ponds and puddles, says Nature Works, a project of New Hampshire Public Television.Continue Reading
During the rainy season, the male red-eyed tree frogs gather above ponds. They vocalize and jostle among themselves to establish territories. When a female appears, the males fight to see which one gets to mate. The winner clasps the female's back. She climbs down to the pond, fills an internal bladder with water and climbs back up into the trees. She selects a leaf hanging over the pond and lays eggs on it. The male fertilizes the eggs. The female then covers the eggs with water from her bladder, describes the BioWeb, a student research project of the University of Wisconsin LaCrosse. The eggs hatch 5 to 11 days later, releasing the tadpoles.
During late spring and summer, male gray tree frogs gather around ponds and swamps. They vocalize and aggressively defend their territories from other males. Females appear to select males based on their calls. The female lays eggs on the surface of any available shallow water. Swamps, ponds, swimming pools, puddles and even water-filled tires are likely locations. The male fertilizes the eggs. The eggs are usually tethered to vegetation to keep them from washing away, says Nature Works.Learn more about Animal Reproduction
Insects that lay eggs are called orthopterans, which consist of common species such as praying mantis, cockroaches, crickets and grasshoppers. Although these insects all lay eggs, they have different methods of carrying out the egg laying process. All egg-producing insects have distinct methods of carrying, hatching and raising their young.Full Answer >
Platyhelminthes, also known as flatworms, are hermaphrodites, meaning individuals of the species produce both sperm and eggs. These are released from the platyhelminthes where they become cross-fertilized by other platyhelminthes. Two types of platyhelminthes, trematoda and cestoda, lay eggs constantly. The turbellarian class has a seasonal cycle. Turbellaria also reproduce asexually by dividing. Turbellaria are the only class able to regenerate body parts.Full Answer >
A male killer whale inserts its penis into a female whales vagina and releases semen to inseminate the female's eggs. The female vaginal opening is in the middle of three patches near the tail-end of the whale's body. The areas on either side of the vagina are mammary gland slits that contain the nursing nipples, which withdraw when not in use. A single black slit covers a male penis.Full Answer >
Disadvantages of external fertilization include a reliance on water and the large amount of wasted sperm and eggs that never reach a corresponding gamete, even when the organisms releasing the eggs and sperm are in close proximity. Additionally, the eggs released can have no shells, as these would stop sperm.Full Answer >