Desert Grassland Whiptail Lizard
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| Desert Grassland Whiptail Lizard | ||||||||||||||||
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| Aspidoscelis uniparens Wright and Lowe, 1965 |
The Desert Grassland Whiptail lizard (Aspidoscelis uniparens) is an all-female species. These reptiles reproduce by parthenogenesis; eggs undergo a chromosome doubling after meiosis and develop into lizards without being fertilized. However, ovulation is enhanced by female-female courtship and "mating" (pseudocopulation) rituals that resemble the behavior of closely related species that reproduce sexually.[1][2][3]
The lizard lives in dry deserts from central Arizona to west Texas and south into Mexico.
[edit] References
- ^ Crews, D. & Fitzgerald, K.T. (1980). "Sexual" behavior in parthenogenetic lizards (Cnemidophorus). Proceedings of the National Academy of Sciences, 77, 1. pp. 499-502.
- ^ Crews, D., Grassman, D. & Lindzey, J. (1986). Behavioral Facilitation of Reproduction in Sexual and Unisexual Whiptail Lizards. Proceedings of the National Academy of Sciences, 83, 24. pp. 9547-9550.
- ^ Grassman, M. & Crews, D. (1987). Dominance and reproduction in a parthenogenetic lizard. Behavioral Ecology and Sociobiology, 21. pp. 141-147.
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