Search Results - "Ketterson, E.D."

Exposure to artificial light at night accelerates but does not override latitude-dependent seasonal reproductive response in a North American songbird by Singh, D., Montoure, J., Ketterson, E.D.

“…In the modern era of industrialization, illuminated nights have become a common defining feature of human-occupied environments, particularly cities…”
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Songbird preen oil odour reflects haemosporidian parasite load by Talbott, K.M., Becker, D.J., Soini, H.A., Higgins, B.J., Novotny, M.V., Ketterson, E.D.

“…Investigating the impact of parasitism on host phenotype is key to understanding parasite transmission ecology, host behavioural ecology and host–parasite…”
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Breeding at higher latitude is associated with higher photoperiodic threshold and delayed reproductive development in a songbird by Singh, D., Reed, S.M., Kimmitt, A.A., Alford, K.A., Stricker, C.A., Polly, P.D., Ketterson, E.D.

“…Many seasonally breeding animals exhibit a threshold day length (critical photoperiod; CPP) for gonadal growth, and populations breeding at higher latitudes…”
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Hormones and honest signals: males with larger ornaments elevate testosterone more when challenged by MCGLOTHLIN, J.W, JAWOR, J.M, GREIVES, T.J, CASTO, J.M, PHILLIPS, J.L, KETTERSON, E.D

“…When male investment in mating varies with quality, reliable sexual signals may evolve. In many songbirds, testosterone mediates mating investment, suggesting…”
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Editorial: behavioural neuroscience editorial by Ketterson, E.D

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Egg Yolk Layers Vary in the Concentration of Steroid Hormones in Two Avian Species by Lipar, J.L., Ketterson, E.D., Nolan, V., Casto, J.M.

“…Maternally derived steroid hormones are known to be present in the yolks of avian eggs; however, the physiological mechanisms involved in their deposition…”
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