Meeting Abstract 27.3  Jan. 5  How Dinosaurs Build Beaks: Homology Between Avian Rhamphotheca and Diapsid Facial Scales HIERONYMUS, TL*; WITMER, LM; Ohio University; Ohio University th108702@ohiou.edu Studying the evolution of facial integument in non-avian dinosaurs requires an initial framework of proposed transformational homologs for various diapsid skin features, including facial scales and avian rhamphothecae. The most thoroughly […]

Meeting Abstract 27.1  Jan. 5  Do Tetragnatha spider jaws scale like genitalia or like armaments? BRANDT, Y*; ANDRADE, MCB; University of Toronto at Scarborough; University of Toronto at Scarborough ybrandt@utsc.utoronto.ca In many animal taxa, copulatory appendages show negative allometry (relative appendage size decreases as body size increases) whereas appendages used in fighting and threat display are positively […]

Meeting Abstract 27.2  Jan. 5  Development and functional variation of barnacle penis morphology HOCH, JM; Stony Brook University jmatth@life.bio.sunysb.edu Barnacles are simultaneous hermaphrodites that reproduce by copulating with neighbors. To accomplish this, barnacles must extend their penis into the water column, locate receptive functional females and deposit sperm. This may take several minutes, during which the mating […]

Meeting Abstract 27.5  Jan. 5  Cranial ossification and growth patterns of balaenopteroid mysticetes WALSH, B.M.*; BERTA, A.B.; San Diego State University; San Diego State University bredamckay@yahoo.com The sequence of ossification of sutures in the skull of baleen whales (mysticetes) can be used to characterize the relative age of these animals. We examined occipital suture closure in four […]

Meeting Abstract 27.7  Friday, Jan. 4  The role of badge size, bite performance and display behavior in predicting dominance in male ornate tree lizards. MEYERS, J.J.*; IRSCHICK, D.J.; University of Massachusetts, Amherst; University of Massachusetts, Amherst jmeyers@bio.umass.edu Social dominance among males has a profound effect on fitness in many species. Yet the characteristics that make up winners […]

Meeting Abstract 27.2  Friday, Jan. 4  Sexual selection and functional morphology: A new frontier? IRSCHICK, Duncan J; University of Massachusetts at Amherst irschick@bio.umass.edu Sexual selection has been studied for many decades, yet many of its central theories remain unresolved, in large part because of the difficulty of resolving issues of male quality and female choice. An emerging […]

Meeting Abstract 27.3  Friday, Jan. 4  Polyandrous female house wrens increase the size, but not immunocompetence, of their extra-pair young FORSMAN, AM*; VOGEL, LA; SAKALUK, SK; JOHNSON, LS; MASTERS, BS; JOHNSON, BG; THOMPSON, CF; Cornell University; Illinois State University; Illinois State University; Towson University; Towson University; Towson University; Illinois State University amf226@cornell.edu Extra-pair fertilizations (EPFs) occur in […]

Meeting Abstract 27.8  Friday, Jan. 4  How do hormones, performance, sexual signals, and behavior interact to predict dominance in brown anoles? MINER, S.V.*; MEYERS, J.J.; HUSAK, J.F.; IRSCHICK, D.J.; Univ. of Massachusetts, Amherst; Univ. of Massachusetts, Amherst; Univ. of Massachusetts, Amherst; Univ. of Massachusetts, Amherst simon@bittennails.com Males of many species utilize elaborate secondary sex characteristics and behaviors […]

Meeting Abstract 27.5  Friday, Jan. 4  Do androgens mediate seasonal changes in sexual signal size and bite-force performance in green anoles (Anolis carolinensis)? HENNINGSEN, JP*; HUSAK, JF; IRSCHICK, DJ; University of Massachusetts Amherst; University of Massachusetts Amherst and Virginia Tech; University of Massachusetts Amherst justinh@bio.umass.edu Sexually dimorphic structures are common in nature and often play an important […]

Meeting Abstract 27.6  Friday, Jan. 4  Disentangling sperm speed from sperm length HUMPHRIES, S.**; EVANS, J.P.; SIMMONS, L.W.; University of Sheffield; University of Western Australia; University of Western Australia s.humphries@sheffield.ac.uk Sperm competition is a form of post-copulatory sexual selection that has implications across a wide range of biology. Sperm length is often used as a proxy for […]