Highlight: Our Reptilian Brethren: Mammals and Live-Bearing Lizards Show Similar Pregnancy Mechanisms
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منابع مشابه
Highlight: Our Reptilian Brethren: Mammals and Live-Bearing Lizards Show Similar Pregnancy Mechanisms
It is easy to think that, as mammals, we have cornered the market on innovative parenting. Our name as a group of animals is even taken from the glands that mothers use to feed their young. But while mammals represent the bestknown example of vivipary, many other animals have made the same leap. Reptiles have, it seems, a prolific ability to jump from egg laying to live birth. They hold the rec...
متن کاملThe Evolution of Live-bearing in Lizards and Snakes
Most reptiles lay eggs, but many lizards and snakes are live-bearers. Taxonomic and embryological evidence indicates that egg-laying is ancestral (Weekes 1935; Matthews 1955; Amoroso 1960), so the common occurrence of genera containing both live-bearers and egg-layers shows that live-bearing has arisen from egg-laying several times (table 1). This paper considers the ecological conditions favor...
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Although the morphological and physiological changes involved in pregnancy in live-bearing reptiles are well studied, the genetic mechanisms that underlie these changes are not known. We used the viviparous African Ocellated Skink, Chalcides ocellatus, as a model to identify a near complete gene expression profile associated with pregnancy using RNA-Seq analyses of uterine transcriptomes. Pregn...
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Herbivory has evolved in many groups of vertebrates, but it is rare among both extinct and extant nonavian reptiles. Among squamate reptiles, (lizards, snakes, and their relatives), <2% of the >7,800 species are considered to be herbivorous, and herbivory is restricted to lizards. Here, we show that within a group of South American lizards (Liolaemidae, approximately 170 species), herbivory has...
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The review article, “Mitochondrial Mechanisms in Septic Cardiomyopathy” by Cimolai and colleagues, examines the role that mitochondria may play in the pathogenesis of cardiac dysfunction, a well-described, life-threatening complication in patients with severe sepsis and septic shock. Despite current therapies that mostly aim to reduce systemic infection and inflammation, sepsis remains the bigg...
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ژورنال
عنوان ژورنال: Genome Biology and Evolution
سال: 2012
ISSN: 1759-6653
DOI: 10.1093/gbe/evs019