The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

The 2017/18  impact factor of The Herpetological Journal is 1.268

ISSN 0268-0130


pdf 05. Female reproductive biology of the lizards Liolaemussarmientoi and L. magellanicus from the southern end of the world

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pp. 101-108
Authors: Fernández, Jimena B.; Medina, Marlin; Kubisch, Erika L.; Manero, Amanda A.; Scolaro, J. Alejandro & Ibargüengoytía, Nora R.

Abstract: Lizards that live in the harsh climate of the Argentinean Patagonia (40°–53° S) are active for a period restricted to spring and summer when vitellogenesis, pregnancy and birth take place. Herein, we present data on the female reproductive cycle, body size at sexual maturity, litter size and fat-body cycle of one of the world's southernmost reptiles, Liolaemus sarmientoi. We also provide preliminary data on the reproductive cycle of a sympatric species, L. magellanicus. Females of both species start vitellogenesis in late spring, probably arrested or continued at very low rates during brumation resumed in the spring of the next year. Pregnancy starts in spring and births of L. sarmientoi (2 to 7 offspring) and L. magellanicus (3 to 4 offspring) occur over a month in midsummer. Females that give birth earlier can start a new vitellogenic cycle before autumn and perform an annual reproductive cycle. However, females which give birth later delay the start of a new vitellogenic cycle until the next spring, performing a biennial reproductive cycle. Thus, females have the potential to adjust their frequency of reproduction according to the energetic restrictions imposed by environmental conditions in the southernmost lands of South America.

Keywords: LIFE HISTORY, LIOLAEMUS SARMIENTOI, LIOLAEMUS MAGELLANICUS, ANNUAL-BIENNIAL REPRODUCTIVE CYCLE, COLD CLIMATE, VIVIPARITY, FAT BODIES

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IMPORTANT NOTE - JUNE 2020

Please note that as from Volume 31 Number 1 (January 2021) on, the Herpetological Journal will be available as an online publication only - the last print edition will be Volume 30 Number 4.   

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