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Llamas have an unusual reproductive cycle for a large animal. Female llamas are induced ovulators. [24] Through mating, the female releases an egg and is often fertilized on the first attempt. Female llamas do not go into estrus ("heat"). [25] Like humans, llama males and females mature sexually at different rates.
Induced ovulation occurs in some animal species that do not ovulate cyclically or spontaneously. [ 1 ] [ 2 ] Ovulation can be induced by externally-derived stimuli during or before mating , such as sperm , pheromones , or mechanical stimulation during copulation .
In a paired mating system (one male mates with one female, such as in clownfish or moray eels) the male can only fertilize one batch of eggs, whereas the female needs only a small male to fertilize her batch of eggs. so the larger she is, the more eggs she'll be able to produce and have fertilized.
Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop inside eggs that remain in the mother's body until they are ready to hatch.
Brandon Rahe, a contractor with the FWC’s Python Action Team, needed a boat to reach the nest, which was well hidden in a hallow of dead grass and weeds.. Video shared on YouTube shows the ...
Oviparous animals laying eggs with thick calcium shells, such as chickens, or thick leathery shells generally reproduce via internal fertilisation so that the sperm fertilises the egg without having to pass through the thick, protective, tertiary layer of the egg. Ovoviviparous and viviparous animals also use internal fertilisation.
They hold the eggs internally for several weeks, providing nutrients, and then lay them and cover them like birds. Like marsupial " joeys ", monotreme " puggles " are larval and fetus-like, [ 9 ] as like them they cannot expand their torso due to the presence of epipubic bones, forcing them to produce undeveloped young.
Parthenogenesis (/ ˌ p ɑːr θ ɪ n oʊ ˈ dʒ ɛ n ɪ s ɪ s,-θ ɪ n ə-/; [1] [2] from the Greek παρθένος, parthénos, 'virgin' + γένεσις, génesis, 'creation' [3]) is a natural form of asexual reproduction in which the embryo develops directly from an egg without need for fertilization.