Did you know that about 20% of the 9,000 known snakes and lizards are viviparous? These reptile groups are able to adapt their reproductive strategies of the most surprising forms to the habitat in which they live. Thus, according to the conditions of the medium, they use an efficient vivipara reproduction during the pregnancy of their young. As for fish, would you say that there are also live species? The answer is yes, although in a lower percentage than the case of reptiles, since only 2% of the known species of fish have young lively.
In this interesting ecology article, you will learn in detail about the VIVÍPAROS ANIMALS: What are, characteristics and examplesas well as some curious data on the reproduction and gestation strategies that we carry out, both mammals, and the rest of the groups of animals.
What are live animals
Referring to the type of reproduction and gestation of new animal individuals, it is possible to group as lived animals all those characterized by a Internal Embryo Development.
In this way, embryos, after mating and fertilization by two adult individuals of different sex, They grow and develop within the female bellyin a specialized structure for it. In this structure, the embryos of the live species cover their nutritional and respiratory needs necessary to develop their organs, grow and mature until the time of their birth comes.
In the next sections of this article we will see more characteristics that define live animals, as well as several examples of different groups of animals that follow a vivid reproduction and gestation.
Characteristics of live animals
The main characteristics of liver animalsthat allow us to identify and differentiate them from animals with other types of reproduction, are:
- Direct birth of living offspring.
- Internal fertilization by male individuals to females, differentiating different sexual reproductive organs and various mating strategies to carry out such fertilization, which will allow the development of embryos in viviparum.
- The embryos grow and develop within the mother, either in placental or non -placental systems, thus directly receiving the food it needs to grow, through an umbilical cord that directly connects the blood torrents of the mother and that of the embryos.
- After their birth, the young need to be breastfed by their mothers during a certain period of breastfeeding, in the exclusive case of mammals. In the rest of the groups of lively animals, the youth are already being prepared to face the new conditions of the medium and feed on their own.
Types of reproduction of live animals
Within the wide set of lively animals that exist in nature, they have different types of reproduction and gestation. Among the types of reproduction of live animals we can differentiate:
- PLACENTARY VIVIPARISM: It corresponds to the “viviparism par excellence” and the most developed of the types of reproduction vivipara. It is characterized by the presence of a placental system inside the belly of the female that is brewing, which provides protection and food to embryos during their development.
- Marsupial Viviparism: This other type of viviparism is characterized by the absence of placenta, so that the fetus is born in a premature state that forces the mother to facilitate new conditions of protection and food until her complete development. This is the case of the so -called marsupials, in which females have an outer or marsupio bag, in which it transports and cares for the young. In this other ecology article, we explain everything about what marsupial animals are.
- OVIVIPARRISM: This type of reproduction combines characteristics of both viviparism and oviparism. The females give birth to living offspring, which hatch of eggs internally. To do this, during their internal embryonic development, embryos nourish themselves from the reserves of the egg yolk (vitelino bag) in which they are immersed, since there is no placental system that connects the mother and embryos during pregnancy.
Examples of lively animals
Next, we show you a List of examples of live animals taking into account species from different groups of animals:
Examples of lively mammals
- Be Huamano (Homo sapiens sapiens)
- Koala (Phascolarctos Cinereus)
- Las Nieves Leopard (Panthera Uncia)
- Rabbits (genus oryctolagus)
- Lazy bay (Bradypus variegatus)
Examples of live reptiles
- Underground lizard (Pasteiodon Reynoldsi)
- Fujian lizard (Popei Potiodon)
- Jackson Tryoceros Chameleon (Jacksonii Troceros)
- Rayada snake (Thamnophis Sirtalis)
- Three fingers (Saiphos Equalis)
Examples of liver amphibians
- Frog of the Island of Célebres (Limnonectes larvaepartus)
- Surinam toad (Pipa pipe)
- Cecílidos (Caecility Family)
- Herpélidos (Herpelidae family)
- Tiflonéctides (Typholonectidae family)
Examples of live fish
- Tigre Arenero Shark (Carcharias Taurus)
- Lemon Shark (Carcharhinus acronotus)
- Musola Tigre (Mustelus lenticulatus)
- Guppy fish (Poecilia Reticulata)
- Endler fish (Poecilia WingeYo)
If you want to read more articles similar to VIVÍPAROS ANIMALS: What are, characteristics and exampleswe recommend that you enter our biology category.
- Writing equipment. You will surprise the way of birth of these animals. National Geographic Spain-Animals.
- Muñoz, FJ (2015) Reproductive effort and thermal ecology of two lively species of the genus Potiodon (Squamata: Scinidae) of Mexico. University Center for Biological and Agricultural Sciences, Mexico.
- Sánchez, TJ (1997) Teaching reproduction of oviparous and liver animals. National Pedagogical University, Mexico.
