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Ovoviviparity
 
 
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Ovoviviparous, also known as oviviparous, animal
Animal

Animals are a major group of multicellular, eukaryotic organisms of the Kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life....
s develop within egg
Egg (biology)

In most birds and reptiles, an egg is the zygote, resulting from fertilization of the ovum. To enable incubation the egg is usually kept within a favourable temperature range as it nourishes and protects the growing embryo....
s that remain within the mother's body up until they hatch or are about to hatch. This strategy of birth
Childbirth

Childbirth is the culmination of a human pregnancy or gestation period with the delivery of one or more newborn infants from a woman's uterus. The process of normal human childbirth is categorized in three stages of labour: the shortening and dilation of the cervix, descent and delivery of the infant, and delivery of the placenta.....
 is known as ovoviviparity. It is similar to vivipary
Vivipary

A viviparous animal is an animal employing vivipary: the embryo develops inside the body of the mother, as opposed to outside in an Egg ....
 in that the embryo develops within the mother's body. Unlike the embryos of viviparous species, ovoviviparous embryo
Embryo

An embryo is a multicellular organism ploidy eukaryote in its earliest stage of development, from the time of first cell division until birth, Egg , or germination....
s are nourished by the egg yolk
Egg yolk

An egg yolk is the part of an Egg which serves as the food source for the developing embryo inside. Prior to fertilization the yolk together with the germinal disc is a single Cell ....
 rather than by the mother's body.






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Ovoviviparous, also known as oviviparous, animal
Animal

Animals are a major group of multicellular, eukaryotic organisms of the Kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life....
s develop within egg
Egg (biology)

In most birds and reptiles, an egg is the zygote, resulting from fertilization of the ovum. To enable incubation the egg is usually kept within a favourable temperature range as it nourishes and protects the growing embryo....
s that remain within the mother's body up until they hatch or are about to hatch. This strategy of birth
Childbirth

Childbirth is the culmination of a human pregnancy or gestation period with the delivery of one or more newborn infants from a woman's uterus. The process of normal human childbirth is categorized in three stages of labour: the shortening and dilation of the cervix, descent and delivery of the infant, and delivery of the placenta.....
 is known as ovoviviparity. It is similar to vivipary
Vivipary

A viviparous animal is an animal employing vivipary: the embryo develops inside the body of the mother, as opposed to outside in an Egg ....
 in that the embryo develops within the mother's body. Unlike the embryos of viviparous species, ovoviviparous embryo
Embryo

An embryo is a multicellular organism ploidy eukaryote in its earliest stage of development, from the time of first cell division until birth, Egg , or germination....
s are nourished by the egg yolk
Egg yolk

An egg yolk is the part of an Egg which serves as the food source for the developing embryo inside. Prior to fertilization the yolk together with the germinal disc is a single Cell ....
 rather than by the mother's body. However, the mother's body does provide gas exchange
Gas exchange

Gas exchange or respiration takes place at a respiratory surface?a boundary between the external environment and the interior of the body....
 (respiration).

Ovoviviparity is employed by many aquatic life forms such as fish
Fish

A fish is any marine biology vertebrate animal that is typically ectothermic , covered with scale , and equipped with two sets of paired fins and several unpaired fins....
 and some shark
Shark

Sharks are a type of fish with a full Cartilage skeleton and a highly Streamlines, streaklines and pathlinesd body. They respire with the use of five to seven gill slits....
s, reptile
Reptile

Reptiles, or members of the class Reptilia, are air-breathing, cold-blooded vertebrates that have skin covered in scale as opposed to hair or feathers....
s, and invertebrate
Invertebrate

An invertebrate is an animal lacking a vertebral column. The group includes 98% of all animal species ? all animals except those in the Chordate subphylum vertebrate ....
s. The young of ovoviviparous amphibians are sometimes born as larva
Larva

A larva is a young form of animal with indirect developmental biology, going through or undergoing metamorphosis .The larva can look completely different from the adult form, for example, a caterpillar differs from a butterfly....
e, and undergo metamorphosis outside the body of the mother.

See Oviparous and Viviparous for other examples of development in animals and humans.

See also

  • Oviparous
  • Viviparous
  • Live-bearing aquarium fish
    Live-bearing aquarium fish

    Live-bearing aquarium fish, often simply called livebearers, are fish that retain the eggs inside the body and give birth to live, free-swimming young....
  • Sand tiger shark
  • Giffordius
    Giffordius

    Giffordius is a gastropod genus, consisting of terrestrial snails in the family Polygyridae. The two known species, found on New Providence, Bahamas, were named after the early conservationist and politician, Gifford Pinchot and his wife, Cornelia, who discovered them....
    , a snail