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John Steffen
John Steffen
Assistant Professor of Biology, Penn State Erie, The Behrend College
Geverifieerd e-mailadres voor psu.edu
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Contributions of pterin and carotenoid pigments to dewlap coloration in two anole species
JE Steffen, KJ McGraw
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular …, 2007
912007
Host Stress Response Is Important for the Pathogenesis of the Deadly Amphibian Disease, Chytridiomycosis, in Litoria caerulea
JD Peterson, JE Steffen, LK Reinert, PA Cobine, A Appel, L Rollins-Smith, ...
PLoS One 8 (4), e62146, 2013
822013
How dewlap color reflects its carotenoid and pterin content in male and female brown anoles (Norops sagrei)
JE Steffen, KJ McGraw
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular …, 2009
642009
Carotenoid access, nutritional stress, and the dewlap color of male brown anoles
JE Steffen, GE Hill, C Guyer
Copeia 2010 (2), 239-246, 2010
462010
Display behaviour and dewlap colour as predictors of contest success in brown anoles
JE Steffen, CC Guyer
Biological Journal of the Linnean Society 111 (3), 646-655, 2014
362014
Carotenoid Composition of Colorful Body Stripes and Patches in the Painted Turtle (Chrysemys picta) and Red-Eared Slider (Trachemys scripta)
JE Steffen, KM Learn, JS Drumheller, SM Boback, KJ McGraw
Chelonian Conservation and Biology 14 (1), 56-63, 2015
292015
Perch-height specific predation on tropical lizard clay models: implications for habitat selection in mainland neotropical lizards
JE Steffen
Revista de Biología Tropical 57 (3), 859-864, 2009
192009
A field test of female mate preference for male plumage coloration in eastern bluebirds
M Liu, L Siefferman, H Mays Jr, JE Steffen, GE Hill
Animal Behaviour 78 (4), 879-885, 2009
152009
Abundance of the long-nosed leopard lizard (Gambelia wislizeni) is influenced by shrub diversity and cover in southeast Oregon
JE Steffen, RA Anderson
The American Midland Naturalist 156 (1), 201-207, 2006
152006
The effect of dietary carotenoid increase on painted turtle spot and stripe color
JE Steffen, J Hultberg, S Drozda
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular …, 2019
132019
Perch height differences among female Anolis polylepis exhibiting dorsal pattern polymorphism
JE Steffen
Reptiles & Amphibians 17 (3), 172-174, 2010
112010
Dewlap color variation based on pterin and carotenoid pigments in three subspecies of Anolis jubar of the Cuban southern coast
YU Alfonso, HJ Morris, A Gutiérrez, L Rodríguez-Schettino, D Denis, ...
Copeia 2013 (2), 201-205, 2013
102013
An assessment of allometry for sexual size dimorphism in mainland anoles
JE Steffen
South American Journal of Herpetology 4 (3), 245-252, 2009
92009
Do Contrastingly Colored Unripe Fruits of the Neotropical Tree Ardisia nigropunctata Attract Avian Seed Dispersers?
LK Amsberry, JE Steffen
Biotropica 40 (5), 575-580, 2008
92008
The effect of temperature on standard metabolic rate of Brown Anoles
JE Steffen, AG Appel
Amphibia-Reptilia 33 (2), 297-302, 2012
62012
Carotenoid deprivation and beta-carotene's effects on male and female turtle color
JE Steffen, R Quigley, I Whibley, KJ McGraw
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular …, 2021
42021
Chytridiomycosis is metabolically costly and induces sickness behavior and immune effects that are linked to increased corticosterone secretion
JD Peterson, JE Steffen, AG Appel, LA Rollins-Smith, MT Mendonca
Integrative and Comparative Biology 51, E108-E108, 2011
42011
Ecological Correlates of Habitat Use for the Long Nose Leopard Lizard, Gambelia Wislizenii, in Southeast Oregon
JE Steffen
Western Washington University, 2002
32002
The Optics of Life: A Biologist’s Guide to Light in Nature. Sönke Johnsen.
JE Steffen
Integrative and Comparative Biology 52 (2), 331-331, 2012
12012
Carotenoid-based dewlap color as a visual signal in social communication of brown anoles (Norops sagrei)
JE Steffen
Auburn University, 2007
12007
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Artikelen 1–20