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A Brazilian rainbow boa constrictor kept at a school in England gave birth to 14 babies last month, despite having no contact with another snake for nearly a decade.
The boa in the U.K., a 6-foot, 13-year-old Brazilian Rainbow Boa named Ronaldo, gave birth last week after having no contact with any other snakes for at least nine years, according to the City of ...
Parthenogenesis is a mode of asexual reproduction in which offspring are produced by females without the genetic contribution of a male. Among all the sexual vertebrates, the only examples of true parthenogenesis, in which all-female populations reproduce without the involvement of males, are found in squamate reptiles (snakes and lizards). [1]
Instead, they give birth to live young. Eight is an average-size brood, with the number depending on the snake's size, according to Roberts. Roberts is studying how temperature changes and ...
Parthenogenesis does not apply to isogamous species. [46] Parthenogenesis occurs naturally in aphids , Daphnia , rotifers , nematodes , and some other invertebrates, as well as in many plants. Among vertebrates , strict parthenogenesis is only known to occur in lizards, snakes, [ 47 ] birds, [ 48 ] and sharks. [ 49 ]
Like other natricine snakes such as water snakes (genus Nerodia) and garter snakes (genus Thamnophis), S. dekayi is a viviparous species, giving birth to live young. [13] Sexual maturity is reached at two to three years. Mating takes place in the spring, after snakes emerge from brumation. Between 3 and 41 young are born in late summer. [14]
Although many kinds of snakes and other reptiles are oviparous (lay eggs), rattlesnakes are ovoviviparous (give birth to live young after carrying eggs inside). [77] The female produces the ova ("eggs") in her ovaries, after which they pass through her body cavity and into one of her two oviducts.
Ronaldo, a 6-foot Brazilian rainbow boa constrictor kept at a school in England, was thought to be male — until the snake gave birth to 14 babies last month.