The ovoviviparous animals They are a class of animals that hatch from eggs, eggs that remain inside the mother until just before hatching. Ovoviparity or ovoviparism is therefore a mix between oviparism (animals that lay eggs to reproduce) and viviparism (animals that develop inside the mother’s body). They are, in short, an example of genetic evolution based on survival. Since nature is so wise and we know that it never ceases to amaze you, at OneHowTo.com we explain what are ovoviviparous animals.
Ovoviviparous fish
Despite its resemblance to whales or dolphins, the shark is not a mammalbut a fish. And they are incredible fish, there are anyway: viviparous, oviparous and ovoviviparous.
Most fish generate a large number of small eggs that they deposit in places they consider safe for their young, waiting for the male to fertilize them by spraying them with his sperm. But this technique is ineffective, since most eggs die shortly after and the newly hatched larvae have a very low survival rate due to predators and environmental conditions.
This is why some sharks and other fish like the Manta Ray, Guppys, Mollys or Plattys, have opted for a more intelligent form of reproduction: the ovoviparity. As in viviparous animals, the eggs are fertilized internally and are well protected inside the females that nourish them through a placenta like mammals.
Ovoviviparous snakes
Like sharks snakes also have all three modes of gestation and birth (oviparism, viviparism, ovoviviparism. velvet snake, for example, it is viviparous. The young of this very poisonous specimen are born alive from the mother, who can give birth to an average of 30 young after a pregnancy that lasts between 180 and 240 days. Of course, once they are born the female does not take care of the babies: from the first day of its life the velvet snake is dedicated to hunting.
The coral snake, another extremely poisonous species, is an oviparous snake. The mother lays the eggs in a place that she considers suitable and waits for the eggs to be excluded in the middle of nature, with all the risks that this entails. If you want to read more about poisonous animals, you will be interested in our article which is the most poisonous animal in the world.
For its part, Boa constrictor, one of the largest snakes in the world (it can weigh 30 kilograms and measure up to 4 meters) is ovoviviparous. Inside, the mother keeps the eggs for 7 months and can give birth to up to 25 young.
But if we talk about which are the largest ovoviviparous snakes, the number 1 position is for the Anaconda. Up to 200 kilograms in weight and 12 meters long, the also known as the water boa maintains a gestation of eggs for 6 months and can reach 50 babies.
Other reptiles and amphibians
Also exist some species of chameleons that are ovoviviparous and have a gestation of between 5 and 7 months.
The Suriname toad Finally, it is an extremely strange species of amphibian, although not only because it is ovoviviparous, but because of its flat and gray appearance. And their strangeness do not end there. Unlike other ovoviviparous animals, this amphibian does not carry its eggs inside, but creates a transparent secondary skin layer on its back to deposit them and carry them safely with it everywhere. It can carry between 60 and 100 young on its back!
If you want to know more about strange species, you may be interested in the oneHowTo.com article What are the 10 rarest animals in the world.
Insects
Neither do all flies lay eggs. Some of the species of this very common and annoying insect are ovoviviparous (the larvae do not see the light until they hatch), such as the tachinidae fly, insects a little larger than house flies and that inhabit the entire planet.
Other ovoviviparous insects are many species of beetles such as the metallic beetle.
If you want to read more articles similar to What are ovoviviparous animals, we recommend that you enter our category of The Animal World.