All rights reserved. A male anglerfish bottom right attaches to a female. The animals fertilize eggs outside their bodies. Men, be glad you're not an anglerfish.
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A High-Throughput Method For Zebrafish Sperm Cryopreservation and In Vitro Fertilization
Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, to spawn refers to the process of releasing the eggs and sperm, and the act of both sexes is called spawning. Most aquatic animals, except for aquatic mammals and reptiles , reproduce through the process of spawning. Spawn consists of the reproductive cells gametes of many aquatic animals, some of which will become fertilized and produce offspring. The process of spawning typically involves females releasing ova unfertilized eggs into the water, often in large quantities, while males simultaneously or sequentially release spermatozoa milt to fertilize the eggs.
External and internal fertilization are forms of reproduction that vary in method and embryo development. External fertilization usually occurs in aquatic environments where both eggs and sperm are released into the water. After the sperm reaches the egg, fertilization can then take place. Most external fertilization happens during the process of spawning where one or several females release their eggs and the male s release sperm in the same area, at the same time. The release of the reproductive material may be triggered by water temperature or the length of daylight.
Correspondence to: M. All Rights Reserved. Motility is an important function of the male gamete, which allows sperm to actively reach and penetrate the female gamete in organisms with internal and external fertilization.