Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Ryan J. Seddon"'
Autor:
Alison G. Ossip-Drahos, Julio A. Rivera, Emília P. Martins, Ryan J. Seddon, Jake A. Pruett, Cuauhcihuatl Vital-García, Diana K. Hews, Cristina Romero-Diaz, Stephanie M. Campos, J. Jaime Zúñiga-Vega, Savannah L. Price
Publikováno v:
Zoology. 149:125961
Colorful ornaments are important visual signals for animal communication that can provide critical information about the quality of the signaler. In this study, we focused on different color characteristics of the abdominal patches of males of six li
Autor:
Diana K. Hews, Jake A. Pruett, Ryan J. Seddon, Israel Solano-Zavaleta, J. Jaime Zúñiga-Vega, Víctor Argaez
Publikováno v:
General and Comparative Endocrinology. 304:113717
Testosterone, in addition to promoting the expression of sexual ornaments can negatively affect immune function, leaving individuals more susceptible to parasites (immunocompetence handicap hypothesis). Immunosuppressive effects of testosterone also
Autor:
Ryan J. Seddon, Diana K. Hews
Publikováno v:
Journal of Experimental Zoology Part A: Ecological Genetics and Physiology. 325:491-500
Mechanisms underlying production of animal coloration can affect key traits besides coloration. Melanin, and molecules regulating melanin, can directly and indirectly affect other phenotypic traits, such as immune function. We asked whether melanizat
Autor:
Diana K. Hews, Ryan J. Seddon
Publikováno v:
General and Comparative Endocrinology. 285:113287
Hormones can mediate suites of correlated traits. Melanocortins regulate melanin synthesis and elements of the melanocortin system can directly, and indirectly, affect a number of other traits, such as stress reactivity. Trait correlations within the
Autor:
Ryan J. Seddon, Diana K. Hews
Publikováno v:
Journal of experimental zoology. Part A, Ecological and integrative physiology. 327(8)
Hormones mediate the expression of suites of correlated traits and hence may act either to facilitate or constrain adaptive evolution. Selection on one trait within a hormone-mediated suite of traits may lead to a change in the strength of the hormon
Autor:
Ryan J. Seddon, Ryan A. Johnston, Michael A. Anderson, Derec R. Dodge, Alison N. Carey, Emily R. Mattison, Joshua R. Campbell, Brian T. Miller, Nathan L. Singer
Publikováno v:
Southeastern Naturalist. 13:101-107
Ambystoma barbouri (Streamside Salamander) inhabits upland deciduous forests associated with ephemeral first- and second-order streams throughout middle Tennessee. The distribution of Streamside Salamanders is centered in north-central Kentucky and e
Autor:
Ryan J. Seddon, Matthew Klukowski
Publikováno v:
Amphibia-Reptilia. 34:585-589
The immunocompetence handicap hypothesis posits that secondary sexual coloration can honestly signal male quality because elevated testosterone, which is necessary for the expression of the coloration, also handicaps males through immunosuppression.
Autor:
Ryan J, Seddon, Diana K, Hews
Publikováno v:
Journal of experimental zoology. Part A, Ecological genetics and physiology. 325(8)
Mechanisms underlying production of animal coloration can affect key traits besides coloration. Melanin, and molecules regulating melanin, can directly and indirectly affect other phenotypic traits, such as immune function. We asked whether melanizat
Autor:
Matthew Klukowski, Ryan J. Seddon
Publikováno v:
Journal of Experimental Zoology Part A: Ecological Genetics and Physiology. 317:499-510
Environmental stressors elicit elevations of plasma glucocorticoid hormones. Stressors also result in increases in the circulating heterophil to lymphocyte ratio (H:L ratio), which has been linked to increased glucocorticoids. Recently, there has bee
Autor:
Diana K. Hews, Ryan J. Seddon
Publikováno v:
Physiologybehavior. 163
Mechanisms underlying production of animal coloration can affect key traits besides coloration. Melanin, and molecules regulating melanin, can directly and indirectly affect other phenotypic traits including aggression, stress-reactivity, and immune