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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]
Females also gain nutrients from sperm storage so the more a female mates with different males the more nutritional access she will obtain. [40] After copulation, some female lizard species chose the sex of their offspring based on the male's sperm. Females produce sons with sperm from larger sires, and daughters from sperm with smaller sires. [41]
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The desert grassland whiptail lizard (Aspidoscelis uniparens) is an all-female species of reptiles in North America. It was formerly placed in the genus Cnemidophorus. A common predator of the whiptail lizard is the leopard lizard that preys on A. uniparens by using ambush and stalk hunting tactics. [2] [3] [4] These reptiles reproduce by ...
The New Mexico whiptail (Aspidoscelis neomexicanus) is a female-only species of lizard found in New Mexico and Arizona in the southwestern United States, and in Chihuahua in northern Mexico. It is the official state reptile of New Mexico. [2] It is one of many lizard species known to be parthenogenetic.
The size of a female's clutch varies according to the season, and it will vary according to the geographical location of the female lizard. The latitude the reproducing female inhabits will change in the reproductive outcomes of the females. All the female's hatchlings will reach sexual maturity within one year of hatching. The hatchlings ...
Agama atra male, showing the tympanum.Compare coloration with the picture of a female below Agama atra gravid female, note how coloration differs from male.. Agama (from Sranan Tongo meaning "lizard") is a genus of small-to-moderate-sized, long-tailed, insectivorous Old World lizards.
The female armadillo girdled lizard gives birth to one [3] or two [6] live young; the species is one of the few lizards that does not lay eggs. The female may even feed her young, which is also unusual for a lizard. Females give birth once a year at most; some take a year off between births.