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  1. No Access

    Article

    A lengthy solution to the optimal propagule size problem in the large-bodied South American freshwater turtle, Podocnemis unifilis

    In oviparous vertebrates lacking parental care, resource allocation during reproduction is a major maternal effect that may enhance female fitness. In general, resource allocation strategies are expected to fo...

    Tibisay Escalona, Dean C. Adams, Nicole Valenzuela in Evolutionary Ecology (2018)

  2. No Access

    Article

    Development of sexing primers in Glyptemys insculpta and Apalone spinifera turtles uncovers an XX/XY sex-determining system in the critically-endangered bog turtle Glyptemys muhlenbergii

    In species or developmental stages where the sex of an individual cannot be reliably identified through external morphology, molecular markers can provide a critical tool to study sex-specific traits that are ...

    Robert Literman, Srihari Radhakrishnan, Jeff Tamplin… in Conservation Genetics Resources (2017)

  3. No Access

    Article

    Divergent Sex-Specific Plasticity in Long-Lived Vertebrates with Contrasting Sexual Dimorphism

    Sex-specific plasticity can profoundly affect sexual size dimorphism (SSD), but its influence in female-larger-SSD vertebrates remains obscure. Theory predicts that sex-specific plasticity may drive SSD evolut...

    Claudia Patricia Ceballos, Omar E. Hernández, Nicole Valenzuela in Evolutionary Biology (2014)

  4. No Access

    Article

    A survey of DNA methylation across social insect species, life stages, and castes reveals abundant and caste-associated methylation in a primitively social wasp

    DNA methylation plays an important role in the epigenetic control of developmental and behavioral plasticity, with connections to the generation of striking phenotypic differences between castes (larger, repro...

    Susan A. Weiner, David A. Galbraith, Dean C. Adams… in Naturwissenschaften (2013)

  5. No Access

    Article

    Phylogenetic Patterns of Sexual Size Dimorphism in Turtles and Their Implications for Rensch’s Rule

    Sexual size dimorphism (SSD) is widespread in nature and may result from selection operating differentially on males and females. Rensch’s rule, the increase of SSD with body size in male-biased-SSD species (o...

    Claudia P. Ceballos, Dean C. Adams, John B. Iverson… in Evolutionary Biology (2013)

  6. No Access

    Article

    The Role of Sex-specific Plasticity in Sha** Sexual Dimorphism in a Long-lived Vertebrate, the Snap** Turtle Chelydra serpentina

    Sex-specific plasticity, the differential response that the genome of males and females may have to different environments, is a mechanism that can affect the degree of sexual dimorphism. Two adaptive hypothes...

    Claudia Patricia Ceballos, Nicole Valenzuela in Evolutionary Biology (2011)

  7. No Access

    Article

    Population genetics of the endangered South American freshwater turtle, Podocnemis unifilis, inferred from microsatellite DNA data

    We studied the population genetics of Podocnemis unifilis turtles within and among basins in the Orinoco and Amazon drainages using microsatellites. We detected high levels of genetic diversity in all sampled loc...

    Tibisay Escalona, Tag N. Engstrom, Omar E. Hernandez… in Conservation Genetics (2009)