Fredric J. Janzen

W.K. Kellogg Foundation — United States

Environmental Science · Physical Sciences

59h-index12.4kcitations245works0.52yr avg
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Research Topics

Turtle Biology and Conservation(165), Amphibian and Reptile Biology(109), Animal Behavior and Reproduction(94), Wildlife Ecology and Conservation(42), Avian ecology and behavior(41)

Publications245 total

Sex- and age-differences in cellular hallmarks of aging in a species with female-biased longevity and environmental sex determination
2025Open Access
Widespread sex-biased gene expression reflects female-biased longevity in a species with environmental sex determination
2025Open Access
The Interplay of Ontogeny and Phylogeny at the Transcriptome Level of the Tetrapod Heart
UNC Libraries·2025Open Access
Flash Drought and Heat Waves Influence Embryonic Development and Offspring Size in an Oviparous Ectotherm
Ecological and Evolutionary Physiology·2025· 1 cited
The Interplay of Ontogeny and Phylogeny at the Transcriptome Level of the Tetrapod Heart
Journal of Experimental Zoology Part B Molecular and Developmental Evolution·2025· 1 citedOpen Access
The tortoise and the air: climate shapes sex-ratio reaction norm variation in turtles
Evolution·2025· 1 citedOpen Access
Archival data reveals human impacts on Blanding’s turtle population persistence
Journal for Nature Conservation·2025· 2 citedOpen Access
Antipredator behavioural syndromes and nest site choice in a freshwater turtle
Animal Behaviour·2025
Developmental timing of flash drought influences offspring survival in the field
Oecologia·2025Open Access
Archival Data Reveals Human Impacts on Blanding's Turtle Population Persistence
SSRN Electronic Journal·2025Open Access
Adult Sex‐Ratio Bias Does Not Lead to Detectable Adaptive Offspring Sex Allocation Via Nest‐Site Choice in a Turtle With Temperature‐Dependent Sex Determination
Ecology and Evolution·2024Open Access
Developmental Thermal Reaction Norms of Leatherback Marine Turtles at Nesting Beaches
Animals·2024· 1 citedOpen Access
The Reptilian Offspring Sex and Incubation Environment (ROSIE) Database
Zenodo (CERN European Organization for Nuclear Research)·2024· 1 citedOpen Access
Geographic variation in incubation temperatures promoting viable offspring production in broadly co‐distributed turtles
Journal of Experimental Zoology Part A Ecological and Integrative Physiology·2024Open Access
Demographic history and genomic signatures of selection in a widespread vertebrate ectotherm
Molecular Ecology·2024· 1 citedOpen Access
Mother knows best: nest-site choice homogenizes embryo thermal environments among populations in a widespread ectotherm
Philosophical Transactions of the Royal Society B Biological Sciences·2023· 22 citedOpen Access
On the origin of patterns of temperature-dependent sex determination
Evolution·2023· 12 citedOpen Access
The Reptilian Offspring Sex and Incubation Environment (ROSIE) Database
2022Open Access
Effects of the egg incubation environment on turtle carapace development
Evolution & Development·2022· 8 citedOpen Access
Developmental asynchrony might not reduce fitness in early life in painted turtles
Frontiers in Physiology·2022· 2 citedOpen Access
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Frequent Co-authors

Edmund D. Brodie(4), Jeanine M. Refsnider(4), John K. Tucker(4), Gary L. Paukstis(3), H. Bradley Shaffer(3), Nicole Valenzuela(3), Rachel M. Bowden(3), Daniel A. Warner(3), Jean Clobert(2), Hal S. Stern(2), Anne M. Bronikowski(2), Suzanne E. McGaugh(2), Ryan T. Paitz(2), Jason J. Kolbe(2), Chih‐Horng Kuo(2), Lisa E. Schwanz(2), James G. Krenz(2), David W. Weisrock(2), Ricky‐John Spencer(2), John B. Iverson(2)