Search Results - "Janzen, Fredric"

Putting Eggs in One Basket: Ecological and Evolutionary Hypotheses for Variation in Oviposition-Site Choice by Refsnider, Jeanine M, Janzen, Fredric J

“…Oviposition-site choice is a major maternal effect by which females can affect the survival and phenotype of their offspring. Across oviparous species, the…”
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On the origin of patterns of temperature-dependent sex determination by Krueger, Caleb J, Janzen, Fredric J

“…Species with temperature-dependent sex determination (TSD) exhibit significant variation in the relationship between incubation temperatures and the sex ratios…”
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Demographic history and genomic signatures of selection in a widespread vertebrate ectotherm by Judson, Jessica M., Hoekstra, Luke A., Janzen, Fredric J.

“…Environmental conditions vary greatly across large geographic ranges, and yet certain species inhabit entire continents. In such species, genomic sequencing…”
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Predicting the effects of climate change on incubation in reptiles: methodological advances and new directions by Carter, A L, Janzen, Fredric J

“…The unprecedented advancement of global climate change is affecting thermal conditions across spatial and temporal scales. Reptiles with temperature-dependent…”
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Behavioural plasticity may compensate for climate change in a long-lived reptile with temperature-dependent sex determination by Refsnider, Jeanine M., Janzen, Fredric J.

“…► In a common garden, turtle populations differed in nest depth and nesting phenology. ► Populations did not differ in choice of shade cover over nests. ►…”
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Temperature-Dependent Sex Determination under Rapid Anthropogenic Environmental Change: Evolution at a Turtle's Pace? by Refsnider, Jeanine M, Janzen, Fredric J

“…Organisms become adapted to their environment by evolving through natural selection, a process that generally transpires over many generations. Currently,…”
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What Have Long-Term Field Studies Taught Us About Population Dynamics? by Reinke, Beth A, Miller, David A.W, Janzen, Fredric J

“…Long-term studies have been crucial to the advancement of population biology, especially our understanding of population dynamics. We argue that this progress…”
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Delayed trait development and the convergent evolution of shell kinesis in turtles by Cordero, Gerardo A, Quinteros, Kevin, Janzen, Fredric J

“…Understanding developmental processes is foundational to clarifying the mechanisms by which convergent evolution occurs. Here, we show how a key convergently…”
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Joint estimation of growth and survival from mark—recapture data to improve estimates of senescence in wild populations by Reinke, Beth A., Hoekstra, Luke, Bronikowski, Anne M., Janzen, Fredric J., Miller, David

“…Understanding age-dependent patterns of survival is fundamental to predicting population dynamics, understanding selective pressures, and estimating rates of…”
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Decades of field data reveal that turtles senesce in the wild by Warner, Daniel A., Miller, David A. W., Bronikowski, Anne M., Janzen, Fredric J.

“…Lifespan and aging rates vary considerably across taxa; thus, understanding the factors that lead to this variation is a primary goal in biology and has…”
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Modeling the Effects of Climate Change–Induced Shifts in Reproductive Phenology on Temperature-Dependent Traits by Telemeco, Rory S., Abbott, Karen C., Janzen, Fredric J.

“…By altering phenology, organisms have the potential to match life-history events with suitable environmental conditions. Because of this, phenological…”
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Climate Change and Temperature‐Dependent Sex Determination: Can Individual Plasticity in Nesting Phenology Prevent Extreme Sex Ratios? by Schwanz, Lisa E., Janzen, Fredric J.

“…Under temperature‐dependent sex determination (TSD), temperatures experienced by embryos during development determine the sex of the offspring. Consequently,…”
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A Brief Review of Non-Avian Reptile Environmental DNA (eDNA), with a Case Study of Painted Turtle (Chrysemys picta) eDNA Under Field Conditions by Adams, Clare, Hoekstra, Luke, Muell, Morgan, Janzen, Fredric

“…Environmental DNA (eDNA) is an increasingly used non-invasive molecular tool for detecting species presence and monitoring populations. In this article, we…”
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The anti-predator role of within-nest emergence synchrony in sea turtle hatchlings by Santos, Robson G., Pinheiro, Hudson Tercio, Martins, Agnaldo Silva, Riul, Pablo, Bruno, Soraya Christina, Janzen, Fredric J., Ioannou, Christos C.

“…Group formation is a common behaviour among prey species. In egg-laying animals, despite the various factors that promote intra-clutch variation leading to…”
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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 by Crowther, Claudia, Adams, Clare I. M., Fondren, Andy, Janzen, Fredric J.

“…ABSTRACT Sex‐ratio theory predicts that parents can optimise their fitness by producing offspring of the rare sex, yet there is a dearth of empirical evidence…”
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Offspring dispersal ability covaries with nest-site choice by Delaney, David M, Janzen, Fredric J

“…Nesting strategy shifts with offspring dispersal ability. In snapping turtles, larger offspring have higher survival than smaller offspring when dispersing…”
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Becoming creatures of habit: Among‐ and within‐individual variation in nesting behaviour shift with age by Delaney, David M., Hoekstra, Luke A., Janzen, Fredric J.

“…The quantification of repeatability has enabled behavioural and evolutionary ecologists to assess the heritable potential of traits. For behavioural traits…”
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Diverse aging rates in ectothermic tetrapods provide insights for the evolution of aging and longevity by Reinke, Beth A., Cayuela, Hugo, Janzen, Fredric J., Lemaître, Jean-François, Gaillard, Jean-Michel, Lawing, A. Michelle, Iverson, John B., Christiansen, Ditte G., Martínez-Solano, Iñigo, Sánchez-Montes, Gregorio, Gutiérrez-Rodríguez, Jorge, Rose, Francis L., Nelson, Nicola, Keall, Susan, Crivelli, Alain J., Nazirides, Theodoros, Grimm-Seyfarth, Annegret, Henle, Klaus, Mori, Emiliano, Guiller, Gaëtan, Homan, Rebecca, Olivier, Anthony, Muths, Erin, Hossack, Blake R., Bonnet, Xavier, Pilliod, David S., Lettink, Marieke, Whitaker, Tony, Schmidt, Benedikt R., Gardner, Michael G., Cheylan, Marc, Poitevin, Françoise, Golubović, Ana, Tomović, Ljiljana, Arsovski, Dragan, Griffiths, Richard A., Arntzen, Jan W., Baron, Jean-Pierre, Le Galliard, Jean-François, Tully, Thomas, Luiselli, Luca, Capula, Massimo, Rugiero, Lorenzo, McCaffery, Rebecca, Eby, Lisa A., Briggs-Gonzalez, Venetia, Mazzotti, Frank, Pearson, David, Lambert, Brad A., Green, David M., Jreidini, Nathalie, Angelini, Claudio, Pyke, Graham, Thirion, Jean-Marc, Joly, Pierre, Léna, Jean-Paul, Tucker, Anton D., Limpus, Col, Priol, Pauline, Besnard, Aurélien, Bernard, Pauline, Stanford, Kristin, King, Richard, Garwood, Justin, Bosch, Jaime, Souza, Franco L., Bertoluci, Jaime, Famelli, Shirley, Grossenbacher, Kurt, Lenzi, Omar, Matthews, Kathleen, Boitaud, Sylvain, Olson, Deanna H., Jessop, Tim S., Gillespie, Graeme R., Clobert, Jean, Richard, Murielle, Valenzuela-Sánchez, Andrés, Fellers, Gary M., Kleeman, Patrick M., Halstead, Brian J., Grant, Evan H. Campbell, Byrne, Phillip G., Frétey, Thierry, Le Garff, Bernard, Levionnois, Pauline, Maerz, John C., Pichenot, Julian, Olgun, Kurtuluş, Üzüm, Nazan, Avcı, Aziz, Miaud, Claude, Elmberg, Johan, Brown, Gregory P., Shine, Richard, Bendik, Nathan F., O’Donnell, Lisa, Davis, Courtney L., Lannoo, Michael J., Stiles, Rochelle M.

“…Comparative studies of mortality in the wild are necessary to understand the evolution of aging; yet, ectothermic tetrapods are underrepresented in this…”
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Effects of the egg incubation environment on turtle carapace development by Cordero, Gerardo A., Birk, Katie, Ruane, Sarah, Dinkelacker, Stephen A., Janzen, Fredric J.

“…Developing organisms are often exposed to fluctuating environments that destabilize tissue‐scale processes and induce abnormal phenotypes. This might be common…”
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Mother knows best: nest-site choice homogenizes embryo thermal environments among populations in a widespread ectotherm by Bodensteiner, Brooke L, Iverson, John B, Lea, Carter A, Milne-Zelman, Carrie L, Mitchell, Timothy S, Refsnider, Jeanine M, Voves, Kameron, Warner, Daniel A, Janzen, Fredric J

“…Species with large geographical ranges provide an excellent model for studying how different populations respond to dissimilar local conditions, particularly…”
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