Meaning of Oviparous Animals

What are oviparous animals:

Oviparous animals are called species that produce and lay eggs where embryos develop. As an example of oviparous animals, we can mention birds, amphibians, reptiles and various species of fish and insects.

The word oviparous derives from the Latin oviparusmade up of the words ovum What does “egg” mean? give birth which expresses “give birth”.

Fertilization of oviparous animals

hen, oviparous

The fertilization process of oviparous animals can be carried out in two ways:

Internal fertilization: It is carried out through copulation between the male and female of the same species, for example the rooster and the hen.

Then, the female lays the egg in a suitable space for the development of her eggs, and that will end with hatching, that is, with the rupture of the shell that covers the egg and the exit of the young towards the outside.

external fertilization: The females release their unfertilized eggs into a watery medium, then the male spreads his sperm on them to fertilize them.

For example, mollusks, fish or amphibians. The number of eggs laid or released varies depending on the species of oviparous animal that lays the eggs.

It is worth mentioning that, regardless of the type of fertilization of the egg, its hatching always occurs outside the maternal womb, that is, in the external environment, and a new living being is born.

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Scientists consider that oviparous animals have a more developed reproductive strategy compared to, for example, viviparous ones.

egg care

nest, oviparous

Oviparous animals have various types of care for their eggs to protect them from other predators. In general, for example, birds lay their eggs in nests on the branches of trees, on the ground or on rocks.

For their part, turtles and reptiles bury their eggs in the sand, some fish lay them in corals, among others.

Examples of oviparous animals

reptile, oviparous

Various oviparous animals are mentioned below:

  • Birds: chickens, ostriches, eagles, ducks, geese, quails, parrots, doves, sparrows, macaws, penguins, storks, hummingbirds, among others.
  • Reptiles: crocodiles, turtles, snakes, coralillos, lizards, komodo dragons, iguanas, chameleons, among others.
  • Fish: eels, sardines, anchovies, salmon, catfish, swordfish, piranhas, tuna, among others.
  • amphibians: salamanders, frogs, toads, among others.
  • Insects: ants, bees, flies, butterflies, beetles, mosquitoes, spiders, among others.
  • Shellfish: octopus, snails, crabs, among others.
  • mammals: platypus and echidnas.

ovoviviparous animals

Ovoviviparous animals are those that lay eggs, which remain inside the mother until the opportune moment of hatching when the embryo is fully developed. For example, sharks or rattlesnakes, among others.

Oviparous and ovoviviparous animals are similar in that the nutrition of the embryo depends on the egg reserve.

viviparous animals

Viviparous animals are those that, after their internal fertilization, develop and nourish in the mother’s womb, in a variable time depending on the species, and are born once their gestation process has been completed. They do not lay eggs.

For example, mammals like dogs or cats, and marsupials like kangaroos, among others.

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See also Animal Kingdom.