title: Differences induced by incubation temperature, versus androgen manipulation, in male leopard geckos (Eublepharis macularius).
abstract: A fundamental tenet of sexual selection is that in sexually dimorphic traits, there is variation within a sex. In leopard geckos (Eublepharis macularius), a species with temperature-dependent sex determination, embryonic temperature contributes both to sex determination and polymorphisms within each sex. In this study we report that males from different incubation temperatures, one hitherto untested, exhibit significant differences in behavior even when castrated. Further, treatment with dihydrotestosterone increases scent marking, a territorial behavior. This supports previous results indicating that temperature has a direct organizing action on brain and sociosexual behavior independent of gonadal hormones.
authors: Section of Integrative Biology, 2401 Speedway, University of Texas at Austin, TX 78712, USA.
authors: Victoria
authors: V
authors: Huang
authors: David
authors: D
authors: Crews
mesh_terms: D000728:Androgens / Q000494:pharmacology*; D000818:Animals; D001703:Biophysics; D002369:Castration; D013196:Dihydrotestosterone / Q000494:pharmacology*; D004625:Embryo, Nonmammalian; D008116:Lizards; D008297:Male; D018782:Maze Learning / Q000187:drug effects; D012724:Sex Attractants / Q000378:metabolism; D012732:Sex Determination Analysis; D012733:Sex Differentiation / Q000187:drug effects* / Q000502:physiology; D012726:Sexual Behavior, Animal / Q000187:drug effects* / Q000502:physiology; D013696:Temperature; D013731:Territoriality; D013997:Time Factors
chemical_list: D000728:Androgens; D012724:Sex Attractants; D013196:Dihydrotestosterone