Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 339-357 |
| Number of pages | 19 |
| Journal | The American Naturalist |
| Volume | 171 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2008 |
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Keywords
- Follicle-stimulating hormone
- Luteinizing hormone
- Reproduction
- Survival
Cite this
Gonadotropin hormone modulation of testosterone, immune function, performance, and behavioral trade-offs among male morphs of the lizard Uta stansburiana. / Mills, S.C.; Hazard, L.; Lancaster, L.; Mappes, T.; Miles, D.; Oksanen, T.A.; Sinervo, B.
In: The American Naturalist, Vol. 171, No. 3, 2008, p. 339-357.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Gonadotropin hormone modulation of testosterone, immune function, performance, and behavioral trade-offs among male morphs of the lizard Uta stansburiana
AU - Mills, S.C.
AU - Hazard, L.
AU - Lancaster, L.
AU - Mappes, T.
AU - Miles, D.
AU - Oksanen, T.A.
AU - Sinervo, B.
N1 - Cited By :34 Export Date: 10 August 2016
PY - 2008
Y1 - 2008
N2 - Sexual selection predicts that trade-offs maintain trait variation in alternative reproductive strategies. Experiments often focus on testosterone (T), but the gonadotropins follicle-stimulating hormone and luteinizing hormone may provide a clearer understanding of the pleiotropic relationships among traits. We assess the activational role of gonadotropins on T and corticosterone regulation in traits expressed by polymorphic male side-blotched lizards Uta stansburiana. Gonadotropins are found to enhance and suppress multiple physiological, morphological, and behavioral traits independently, as well as indirectly via T, and we demonstrate selective tradeoffs between reproduction and survival. The OBY locus, a genetic marker in our model vertebrate mating system, allows characterization of the interaction between genotype and hormone treatment on male traits. Our results suggest that oo, ob, and bb males are near their physiological and behavioral capacity for reproductive success, whereas yy and by males are maintained below their physiological maximum. Both by and yy morphs show trait plasticity, and we demonstrate that gonadotropins are likely proximate effectors that govern not only trait differences between alternative mating strategies but also morph plasticity. Gonadotropins clearly represent an important mechanism maintaining variation in physiological, morphological, and behavioral traits, as well as potentially maintaining the immunosuppression costs of male sexual signals. © 2008 by The University of Chicago. All rights reserved.
AB - Sexual selection predicts that trade-offs maintain trait variation in alternative reproductive strategies. Experiments often focus on testosterone (T), but the gonadotropins follicle-stimulating hormone and luteinizing hormone may provide a clearer understanding of the pleiotropic relationships among traits. We assess the activational role of gonadotropins on T and corticosterone regulation in traits expressed by polymorphic male side-blotched lizards Uta stansburiana. Gonadotropins are found to enhance and suppress multiple physiological, morphological, and behavioral traits independently, as well as indirectly via T, and we demonstrate selective tradeoffs between reproduction and survival. The OBY locus, a genetic marker in our model vertebrate mating system, allows characterization of the interaction between genotype and hormone treatment on male traits. Our results suggest that oo, ob, and bb males are near their physiological and behavioral capacity for reproductive success, whereas yy and by males are maintained below their physiological maximum. Both by and yy morphs show trait plasticity, and we demonstrate that gonadotropins are likely proximate effectors that govern not only trait differences between alternative mating strategies but also morph plasticity. Gonadotropins clearly represent an important mechanism maintaining variation in physiological, morphological, and behavioral traits, as well as potentially maintaining the immunosuppression costs of male sexual signals. © 2008 by The University of Chicago. All rights reserved.
KW - Follicle-stimulating hormone
KW - Luteinizing hormone
KW - Reproduction
KW - Survival
U2 - 10.1086/527520
DO - 10.1086/527520
M3 - Article
VL - 171
SP - 339
EP - 357
JO - The American Naturalist
JF - The American Naturalist
SN - 0003-0147
IS - 3
ER -