Meeting Abstract S11-1.3  Monday, Jan. 7  Gonochorists or hermaphrodites? Gonochoric worms with flexible sex allocation LORENZI, M.C.*; SELLA, G.; Univ. of Turin, Italy; Univ. of Turin, Italy cristina.lorenzi@unito.it Related species share genetic and developmental backgrounds. Therefore, hidden genetic variation for sex determination may allow separate sex species – that share recent common ancestors with hermaphroditic species – […]

Meeting Abstract S11-1.6  Monday, Jan. 7  Genetic, Environmental and Social Control of Sex Change in Molluscs COLLIN, R; STRI, Panama collinR@si.edu Molluscs show a wide diversity of sexual strategies and mechanisms of sex determination. There are both gastropod and bivalve families that are each primarily dioecious, simultaneous hermaphrodites, or sequential hermaphrodites. The multiple evolutionary origins of sex […]

Meeting Abstract S11-1.7  Monday, Jan. 7  Evolution of hermaphroditism in fishes ERISMAN, Brad; Scripps Institution of Oceanography, UC San Diego berisman@ucsd.edu Sexual patterns in fishes are incredibly diverse compared to other vertebrates, as hermaphroditism is taxonomically widespread and takes on many forms including simultaneous, protogynous, and protandrous hermaphroditism, bi-directional sex change and androdioecy. The proximate mechanisms that […]

Meeting Abstract S11-1.5  Monday, Jan. 7  Environmental influences on plasticity in sexual investment in Daphnia WALSH, M. R.; Univ. of Texas Arlington matthew.walsh@uta.edu Sex and dormancy are directly connected in organisms that engage in asexual and sexual reproduction. The transition between asexual and sexual reproduction typically results in a dormant stage that provides a mechanism to persist […]

Meeting Abstract S11-1.4  Monday, Jan. 7  Diverse and plastic sexual systems in barnacles YUSA, Yoichi*; SAWADA, Kota; YAMAGUCHI, Sachi; Nara Women’s University; The Graduate University for Advanced Studies; Kyushu University yusa@cc.nara-wu.ac.jp Barnacles (Crustacea: Thoracica) show diverse sexual systems, including simultaneous hermaphroditism, androdioecy (hermaphrodites + males), and dioecy (females + males). When males occur, they are always smaller […]

Meeting Abstract S10-2.3  Monday, Jan. 7  Uncovering gene family expansion and molecular convergence of the photoreceptive protein opsin in scallop (Bivalvia: Pectinidae) SERB, J.M.*; KRAUSE, A.J.; Iowa State University; Iowa State University serb@iastate.edu Gene duplication is one of the key factors driving genetic diversification and innovation, and may play an important role in phenotypic novelty. We investigated […]

Meeting Abstract S10-2.1  Monday, Jan. 7  Multiple mechanisms of eye reduction within a single population of the cave crustacean, Asellus aquaticus PROTAS, M. E.*; TRONTELJ, P.; PATEL, N. H.; Univ. of California, San Francisco; University of Ljubljana; Univ. of California, Berkeley ProtasM@vision.ucsf.edu Cave animals are an amazing group of organisms. Cave dwelling animals can have the following […]

Meeting Abstract S10-2.4  Monday, Jan. 7  Gene expression differences underlying sexual dimorphism in ostracod eyes: Insights from transcriptomics RIVERA, Ajna S*; SAJUTHI, Andrea; CARILLO-ZAZUETA, Brenna; LAMPEH, Rebecca; SPEISER, Dan; HU, Brianna; Univ. of the Pacific; Univ. of the Pacific; Univ. of the Pacific; Univ. of Kansas Natural History Museum; Univ. of California, Santa Barbara; Univ. of the […]

Meeting Abstract S10-2.2  Monday, Jan. 7  Deep transcriptome insights into cave beetle eyes FRIEDRICH, M.; Wayne State University friedrichwsu@gmail.com The small carrion beetle genus Ptomaphagus diversified into more than 50 species, which range from ancestral surface dwellers to facultative and obligatory cave inhabitants in the Southeast of the United States. One of the best-studied representatives is the […]

Meeting Abstract S10-1.5  Monday, Jan. 7  Watch your steps! Opsins and photoreceptors in sea urchin tube feet ULLRICH-LUTER, Esther; ARNONE, Maria Ina*; Univ. of Bonn and Natural History Museum, Berlin; Stazione Zoologica Anton Dohrn, Napoli miarnone@szn.it Sea urchins, due to their derived morphological body plan, have long been considered to be of limited value regarding the reconstruction […]