Lambert, J.D.; Nagy, L.M.: The role of MAPK signaling in patterning mollusc embryos Classical experiments performed on the embryo of the mollusc Ilyanassa obsoleta demonstrate that the 3D macromere acts as an embryonic organizer, by signaling to other cells and inducing them to assume the correct pattern of cell fates. We have discovered that MAP […]

FISHER, G.R.*; DIMOCK, R.V. Jr.: The Role of the Larval Mantle Cells During Metamorphosis of Utterbackia imbecillis (Bivalvia: Unionidae) Larvae of Utterbackia imbecillis undergo a period of metamorphosis to the juvenile while parasitic on a host fish, but can also be induced to metamorphose in a modified cell culture medium. This metamorphosis involves some dramatic […]

BLACKSTONE, N.W.: Redox State, Reactive Oxygen Species (ROS), and Adaptive Growth of Hydroid Colonies Redox chemistry, involving the transfer of electrons and hydrogen atoms, is central to energy conversion in respiration, and control of gene expression by redox state commonly occurs in bacteria, allowing rapid response to environmental changes. Colonial hydroids often encrust surfaces over […]

MARTINEZ.G.M: Muscle Development in the Long-finned Squid using Phalloidin Staining Methods. Whole mounts and serial sections of embryonic and paralarval Loligo peali squids were prepared and stained with phalloidin�rhodamine flourescent stain which binds to F-actin filaments. Staining revealed a network of actin filaments at different densities at different stages. Muscles of the mantle, arms, tentacles […]

Heyland, A.*; Hodin, J.: Endogenous Thyroxine production in Sand Dollar larvae and its implication for the evolutionary loss of larval feeding Studies on thyroid hormone [T3 and thyroxine (T4)] effects on metamorphosis in amphibians have begun to elucidate how changes in thyroid hormone production and cellular responses underlie alterations in life history patterns. Recently, work […]

PAGE, L.R.: The Apical Sensory Organ of Gastropod Larvae: New Data on a Patellogastropod The larval nervous systems of annelid and molluscan larvae include an apical cluster of sensory and non-sensory neurons that is often associated with a tuft of long cilia. Some of the neurons show immunoreactivity to serotonin and the structure includes a […]

BRODIE, R.J.: Ontogenetic changes in rates of water loss and shell-wearing behaviors enable land hermit crab megalopae to avoid desiccating in air The land hermit crab, Coenobita compressus , migrates from sea to land during the megalopal stage of postlarval development. As the megalopa emerges onto land, it encounters a physical environment wholly different from […]

SANTAGATA, S.*; ZIMMER, R.L.: Muscle, neural, and epithelial tissue variation between larval and presumptive juvenile structures in different species of actinotroch larvae (Phoronida). Actinotroch larvae exhibit variation among several characteristic traits at competence. These traits include the structure of the larval and juvenile tentacles and the muscular and neural components of the hood. All actinotrochs […]

WALTERS, L.J.*; ABGRALL, M.J.: Impact of Drift Species (Gracilaria compressa, Zoobotryon verticillatum) on the Recruitment and Fitness of Sessile Invertebrates Mosquito Lagoon is the northern-most estuary in the Indian River Lagoon system. Here, large, dislodged masses of macroalgae and the bryozoan Zoobotryon verticillatum can be found drifting in the water at varying times throughout the […]

WILLIAMS. J.*; BIESIOT, P.M.: Fatty Acid Profiles Associated with Diapause Egg Production in Two Species of Freshwater Calanoid Copepods The copepods Aglaodiaptomus (= Diaptomus) stagnalis and A. clavipoides co-occur in certain ephemeral ponds. Both species hatch from diapause (resting) eggs when pond sediments are freshly inundated and mature rapidly to adults. Both are believed to […]