Meeting Abstract S4.1 Monday, Jan. 5 08:30 Soft bodies, hard jaws: structure, function and diversity as exemplified by the rotifers HOCHBERG, R.*; WALSH, E.; WALLACE, R.; Univ. Massachusetts, Lowell; Univ. Texas, El Paso; Ripon College, WI rick_hochberg@uml.edu Jaws have evolved numerous times in the animal kingdom and display a wide variety of structural, compositional, and functional differences […]
sessions: S4
Small Worms, Big Teeth Evolution of Feeding Structures in the Marine Nematode Subclass Enoplia
Meeting Abstract S4.7 Monday, Jan. 5 13:30 Small Worms, Big Teeth: Evolution of Feeding Structures in the Marine Nematode Subclass Enoplia SMYTHE, A.B.; Virginia Military Institute smytheab@vmi.edu http://web.vmi.edu/asmythe/Default.asp Members of the subclass Enoplia form one of three primary clades in Nematoda. Enoplia includes Enoplida, primarily aquatic nematodes, and Triplonchida, aquatic and terrestrial nematodes. The presence of presumed […]
Prey capture, feeding and functional anatomy of jaws in velvet worms (Onychophora)
Meeting Abstract S4.5 Monday, Jan. 5 11:00 Prey capture, feeding and functional anatomy of jaws in velvet worms (Onychophora) MAYER, G; University of Leipzig, Germany gmayer@onychophora.com Onychophorans (velvet worms) are carnivorous, terrestrial invertebrates that occur in tropical and temperate forests of the southern hemisphere and around the equator. Together with tardigrades (water bears), onychophorans are regarded as […]
Pharyngeal structures and piercing stylets in tardigrades their evolution and relationships with the feeding habits
Meeting Abstract S4.8 Monday, Jan. 5 14:00 Pharyngeal structures and piercing stylets in tardigrades: their evolution and relationships with the feeding habits GUIDETTI, Roberto*; VECCHI, Matteo; CESARI, Michele; ALTIERO, Tiziana; BERTOLANI, Roberto; REBECCHI, Lorena; Univ. of Modena and Reggio Emilia (Italy) roberto.guidetti@unimore.it Tardigrade feeding apparatus is a complex cuticular structure with considerable taxonomic significance. It can be […]
Muscle articulations an assessment of multifunctional jaw joints made of soft tissue
Meeting Abstract S4.6 Monday, Jan. 5 11:30 Muscle articulations: an assessment of multifunctional jaw joints made of soft tissue UYENO, TA*; CLARK, AJ; Valdosta State University; College of Charleston tauyeno@valdosta.edu This study surveys animals that use soft tissues rather than rigid links to build jaw joints. Rigid biting elements are useful; having hard surfaces to use on […]
What Next Unanswered questions about extraocular photoreception and how we might answer them
Meeting Abstract S4-12 Tuesday, Jan. 5 15:00 What Next? Unanswered questions about extraocular photoreception and how we might answer them JOHNSEN, S.; Duke Univ. sjohnsen@duke.edu http://sites.biology.duke.edu/johnsenlab/ Recent advances in genomics have led to the discovery of diverse arrays of opsins in a myriad of tissues, which, together with behavioral and histological approaches, has greatly advanced the field […]
Photoreception in Phytoplankton
Meeting Abstract S4-3 Tuesday, Jan. 5 08:30 Photoreception in Phytoplankton COLLEY, N.J.*; NILSSON, D-E.; Univ. of Wisconsin; Lund University njcolley@wisc.edu In many organisms, from protists to humans, simple photoreceptors monitor ambient lighting. They function to assess the time of day for circadian rhythms and seasonal changes, as well as for the detection of harmful UV light and […]
Opsins without eyes – precursors or derivatives
Meeting Abstract S4-4 Tuesday, Jan. 5 09:00 Opsins without eyes – precursors or derivatives? OAKLEY, TH*; RAMIREZ, MD; Univ. of California, Santa Barbara; Univ. of California, Santa Barbara oakley@lifesci.ucsb.edu https://labs.eemb.ucsb.edu/oakley/todd/ A common conception of eye evolution is the “Gradual-Morphological (GM) model”, which posits that eyes originated as a simple light sensitive patch that gradually elaborated into eyes […]
Ocular and extraocular photosensitivity and opsin expression in the American horseshoe crab Limulus polyphemus, a chelicerate arthropod
Meeting Abstract S4-7 Tuesday, Jan. 5 11:00 Ocular and extraocular photosensitivity and opsin expression in the American horseshoe crab Limulus polyphemus, a chelicerate arthropod. BATTELLE, B-A; University of Florida, Whitney Laboratory battelle@whitney.ufl.edu Limulus has been a favorite preparation for vision scientists since the 1930’s; therefore much is known about its photosensitivity. More recently, the opsin repertoire and […]
New roles for ganglion cell photoreceptors
Meeting Abstract S4-10 Tuesday, Jan. 5 14:00 New roles for ganglion cell photoreceptors SCHMIDT, T.M.*; SONODA, T.; ALAM, N.M; CHEN, S.; KOFUJI, P.; LI, W; PRUSKY, G.T.; HATTAR, S.; Northwestern Univ.; Northwestern Univ.; Weill Cornell Medical College; National Eye Institute, National Institutes of Health; University of Minnesota; National Eye Institute, National Institutes of Health; Weill Cornell Medical […]