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Multiennial Reproduction in Females of a Viviparous, Temperate-zone Skink, Tiliqua nigrolutea
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Reproductive frequency in captive and wild-caught female of Tiliqua nigrolutea was examined over five consecutive reproductive seasons. Reproductive frequency (0.38 +/- 0.035) was clearly different from an annual pattern of 1.0 (i.e. all females reproducing every year). Individual females did not reproduce every year, but "skipped" seasons were staggered such that a proportion of the population produced a clutch each season. Skipped reproductive opportunities are attributed to a combination of a long gestation, high relative clutch mass (0.43 +/- 0.034), parturition late in the active season, a cessation of feeding in the latter stages of gestation and low autumn temperatures limiting post-partum feeding opportunities.
|Keywords:||Lizard; Multiennial cycle; Relative clutch mass; Reproductive frequency; Skink; Temperate-zone; Tiliqua nigrolutea, Viviparous|
|Journal or Publication Title:||Herpetologica|
|Page Range:||pp. 407-414|
|Date Deposited:||18 Jan 2007|
|Last Modified:||18 Nov 2014 03:12|
|Item Statistics:||View statistics for this item|
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