Meeting Abstract 61.3  Wednesday, Jan. 6  Headstands: a sexually selected signal in the swordtail fish Xiphophorus nezahualcoyotl LYONS, S.M.*; MORRIS, M.R.; Ohio University; Ohio University sl411302@ohio.edu Behaviors associated with aggression in male–male competition may also be used in courtship. Headstands are performed by male Xiphophorus nezahualcoyotl during male–male interactions and by both males and females during courtship. […]

Meeting Abstract 61.1  Wednesday, Jan. 6  Costs and benefits of unreliable signalling in males of the two-toned fiddler crab (Uca vomeris). BYWATER, C.L.*; WILSON, R.S.; The University of Queensland; The University of Queensland c.bywater@uq.edu.au Many species possess exaggerated secondary sexual structures which are used for signalling during mate attraction and pre-fight assessment. Signals are either reliable, where […]

Meeting Abstract 61.4  Wednesday, Jan. 6  Bigger is better: The effect of female ornamentation on male mate choice in the striped plateau lizard, Sceloporus virgatus BALBAG, B.S.; WEISS, S.L.*; Univ. of Puget Sound; Univ. of Puget Sound sweiss@pugetsound.edu When females vary in reproductive quality, they may be selected to honestly signal that quality and males may be […]

Meeting Abstract 60.6  Wednesday, Jan. 6  The effect of male group size on female multiple mating and male reproductive success in the golden silk spider RITTSCHOF, C.C.; University of Florida critter@ufl.edu Across a variety of animal taxa, the outcome of male-male contests depends on size. Winners are larger or have bigger weapons. However, in some cases, large-male […]

Meeting Abstract 60.4  Wednesday, Jan. 6  The Role of Good Genes and Genetic Compatibility in Multiply Mating Horseshoe Crabs JOHNSON, S.L.*; BROCKMANN, H. J.; University of Florida; University of Florida sheriljohnson@ufl.edu Why do females of so many species mate with several males when the sperm from a single male is often sufficient to fertilize all their eggs? […]

Meeting Abstract 60.5  Wednesday, Jan. 6  Sex, death and aging: life history trade-offs between reproductive investment and whole-organism performance in Teleogryllus commodus crickets LAILVAUX, SP*; ZAJITSCHEK, F; BROOKS, R; University of New Orleans; La Station d’Ecologie Experimentale du CNRS à Moulis; University of New South Wales slailvaux@gmail.com Age-related declines in survival and reproductive performance have been reported […]

Meeting Abstract 60.3  Wednesday, Jan. 6  Pelvic Sexual Dimorphism in the Carnivora: A Phylogenetic Approach SCHUTZ, H*; KRIEGER, J.D.; GURALNICK, R.P.; GARLAND, T. Jr.; Univ. of California, Riverside; The Natural History Museum; Univ. of Colorado, Boulder; Univ. of California, Riverside heidisc@ucr.edu In many mammalian groups, the pelves of females are differently shaped and are relatively and absolutely […]

Meeting Abstract 60.2  Wednesday, Jan. 6  Allometry of male fiddler crab genitalia varies with size relationships in mating pairs: a test of the one-size-fits-all hypothesis CHRISTY, J.H.*; VARGAS, L.E.; Smithsonian Tropical Research Institute; Universidad de Costa Rica christyj@si.edu Sexual selection on male traits used as signals to court females or as weapons to fight other males typically […]

Meeting Abstract 59.4  Wednesday, Jan. 6  To breed or not to breed: stress and reproductive decision-making in Galapagos marine iguanas VITOUSEK, Maren N.*; MITCHELL, Mark A.; ROMERO, L. Michael; AWERMAN, Jessica; WIKELSKI, Martin; University of Colorado, Boulder; University of Illinois at Urbana-Champaign; Tufts University; Tufts University; Max Planck Institute for Ornithology and Princeton University maren.vitousek@colorado.edu It is […]

Meeting Abstract 59.6  Wednesday, Jan. 6  Testosterone and latitude in reptiles and amphibians MOORE, I.T.*; VALIN, M.; CASASANTA, M.; EIKENAAR, C.; HUSAK, J.F.; Virginia Tech; Virginia Tech; Virginia Tech; Virginia Tech; University of South Dakota itmoore@vt.edu Latitudinal variation in life history characteristics has long been the focus of ecologists. One of the best examples has been latitudinal […]