ArticleBiology letters2019
Facultative oviparity in a viviparous skink ( Saiphos equalis).
Article in Biology letters, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 21 citations in OpenAlex.
- Post-Oviposition Embryonic Staging Scheme for the Delicate Skink, Lampropholis delicata.Journal of morphology · 2026Article
- Live birth in lizards: A process-based model for the roles of temperature, behavior, and life-history.Evolution letters · 2026Article
- Article
- Review
- Understanding the evolution of viviparity using intraspecific variation in reproductive mode and transitional forms of pregnancy.Biological reviews of the Cambridge Philosophical Society · 2022Article
- Ecological and life-history correlates of erythrocyte size and shape in Lepidosauria.Journal of evolutionary biology · 2022Article
- A comparison of uterine contractile responsiveness to arginine vasopressin in oviparous and viviparous lizards.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2020Article
- Facultative oviparity in a viviparous skink ( Saiphos equalis).Biology letters · 2019Article
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Authors and funding
3 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Facultative changes in parity mode (oviparity to viviparity and vice versa) are rare in vertebrates, yet offer fascinating opportunities to investigate the role of reproductive lability in parity mode evolution. Here, we report apparent facultative oviparity by a viviparous female of the bimodally reproductive skink Saiphos equalis-the first report of different parity modes within a vertebrate clutch. Eggs oviposited facultatively possess shell characteristics of both viviparous and oviparous S. equalis, demonstrating that egg coverings for viviparous embryos are produced by the same machinery as those for oviparous individuals. Since selection may act in either direction when viviparity has evolved recently, squamate reproductive lability may confer a selective advantage. We suggest that facultative oviparity is a viable reproductive strategy for S. equalis and that squamate reproductive lability is more evolutionarily significant than previously acknowledged.
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