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 […]

PHILLIPS, N.E.: The effects of larval nutritional history on larval condition and post-settlement juvenile growth of the mussel Mytilus galloprovincialis For organisms with planktonic feeding larvae, variation in food availability during the larval stage influences the condition of larvae as they develop, and may also have effects on the performance of juveniles after they settle. […]

ABGRALL, M-J.*; WALTERS, L.J.: Settlement preferences and recruitment of the bryozoan Bugula neritina on drift macroalgae in Mosquito Lagoon, Florida In Mosquito Lagoon (the northernmost region of the Indian River Lagoon, Florida), significant differences in the abundance and diversity of drift macroalgae were found when sampled on a monthly basis from January 1998 – March […]

Collin, R.*; Chaparro, O. R.: Loss of Feeding Larvae in Crepidula (Gastropoda: Calyptraeidae) is Not Irreversible It is thought that species of marine invertebrates with planktotrophic development commonly give rise to species with direct development. Direct developers often lose the complex morphological characters necessary for planktotrophic development and therefore cannot give rise to species with […]