Meeting Abstract P3.81  Saturday, Jan. 5  Osmoregulation by Fiddler Crabs (genus Uca) from the Northern Caribbean THURMAN, Carl L. *; HANNA , Joshua M. ; BENNETT, Chad R.; University of Northern Iowa, Cedar Falls thurman@uni.edu The ability to regulate the osmolarity of internal body fluids has not been examined in many species of Caribbean fiddler crabs. Nine […]

Meeting Abstract P3.17  Saturday, Jan. 5  Ontogeny of the pharyngeal jaw apparatus in the zebrafish O’QUIN, C.T.*; OBERG, F.L.; HERNANDEZ, L.P.; George Washington University; George Washington University; George Washington University ctoquin@gwu.edu Cypriniforms (cyprinids, balitorids, catostomids, and cobitids) are an interesting group of fishes in that they posses a number of morphological novelties to the pharyngeal jaw apparatus […]

Meeting Abstract P3.28  Saturday, Jan. 5  Not everything is bigger in Texas; developmental analysis between Texas and Arizona populations of Spea bombifrons reveals striking intestine growth differences. STORZ, Brian/L*; NITZBERG, Brian/W; MOERLAND, Timothy/S; Florida State University, Tallahassee, FL bstorz@bio.fsu.edu Many species show phenotypic differences among populations across their distributions that can be the result of local adaptations. […]

Meeting Abstract P3.13  Saturday, Jan. 5  Multiple origins of respiratory structures in sea urchins MOOI, Rich; BRESLIN, Cara Marie*; California Acad. of Sciences, San Francisco; Univ. of California, Santa Cruz rmooi@calacademy.org The clade Irregularia consists of more or less bilaterally symmetric sea urchins such as heart urchins (Spatangoida), lamp urchins (�cassiduloids�), and sand dollars (Clypeasteroida). Many of […]

Meeting Abstract P3.73  Saturday, Jan. 5  Motor neurons involved in escape responses in white shrimp, Litopeneaus setiferus FAULKES, Z.; The University of Texas-Pan American zfaulkes@utpa.edu Many decapod crustaceans escape from predators using tailflips, which are generated by a set of giant neurons. In crayfish, medial and lateral giant interneurons make monosynaptic connections with abdominal fast flexor motor […]

Meeting Abstract P3.93  Saturday, Jan. 5  Morphological and behavioral determinants of thermal stress in northeastern Pacific Littorina. MILLER, L.P.; Hopkins Marine Station, Stanford University millerlp@stanford.edu Snails in the genus Littorina are found in the mid and upper intertidal zones along much of the coast of North America. They are often the highest living marine organisms on the […]

Meeting Abstract P3.61  Saturday, Jan. 5  Morphogenesis during asexual bud-formation and growth in the poriferan Tethya wilhelma: silica skeleton, aquiferous system and the mesohyle HAMMEL, J.U.*; BECKMANN, F.; NICKEL, M.; Institut fuer Spezielle Zoologie und Entwicklungsbiologie, FSU Jena, Germany; GKSS Research Centre, Geesthacht, Germany; Institut fuer Spezielle Zoologie und Entwicklungsbiologie, FSU Jena, Germany Hammel@porifera.net The highly contractile […]

Meeting Abstract P3.16  Saturday, Jan. 5  More than the sum of its parts: Functional development of a complex feeding system within zebrafish STAAB, K.L.*; HERNANDEZ, L.P.; The George Washington University kstaab@gwu.edu Premaxillary protrusion within Cypriniformes is mediated by a complex system of muscles, ligaments, and bones. This includes the kinethmoid, a novel ossification within the rostral skeleton. […]

Meeting Abstract P3.18  Saturday, Jan. 5  Molecular phylogenetics and egg size evolution in the sand dollar genus Mellita ZIGLER, K.S.*; MOOI, R.J.; LESSIOS, H.A.; Sewanee: The University of the South; California Academy of Sciences; Smithsonian Tropical Research Institute kzigler@sewanee.edu Mellita consists of seven recognized species of sand dollars found in shallow waters along the coasts of the […]

Meeting Abstract P3.77  Saturday, Jan. 5  Modulation of swimming in Clione limacina by nitric oxide involves spike narrowing in central pattern generator interneurons WALTON, D.B.*; WILLINGHAM, K.A.; PIRTLE, T.J.; Abilene Christian University; Abilene Christian University; Abilene Christian University Thomas.Pirtle@acu.edu Modulation of a central pattern generator�s activity produces changes in its output such as varying frequency. Two neuromodulatory […]