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. […]
sessions: Session 62
Settlement preferences and recruitment of the bryozoan Bugula neritina on drift macroalgae in Mosquito Lagoon, Florida
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 […]
Loss of Feeding Larvae in Crepidula (Gastropoda Calyptraeidae) is Not Irreversible
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 […]
Intertidal embryos temperature tradeoffs during early development
Podolsky, R.D.: Intertidal embryos: temperature tradeoffs during early development Species from several phyla brood or deposit benthic embryo masses in intertidal habitats. These habitats can expose embryos to extreme environmental change on short time-scales, which can have diverse effects on development. In the mollusc Melanochlamys diomedia environmental (= developmental) temperature can change from 11 to […]
Energetics of Larval Swimming and Metamorphosis in Four Species of Bugula (Bryozoa)
WENDT, D.E.: Energetics of Larval Swimming and Metamorphosis in Four Species of Bugula (Bryozoa) The amount of energy available to larvae during swimming, location of a suitable recruitment site, and metamorphosis influences the length of time larvae can spend in the plankton. Energetic parameters such as oxygen consumption during swimming and metamorphosis, and elemental carbon […]
Adult nutrition on juvenile growth in Bugula pacifica
HENDERSON, S.Y.: Adult nutrition on juvenile growth in Bugula pacifica Bugula pacifica supplies nutrients to developing brooded larvae through a placenta-like attachment. Previous experiments of mine showed trends toward smaller larval size, slower growth, and longer time to first reproduction for juvenile colonies that came from nutritionally stressed adults when compared to larval and juvenile […]
The role of sulfur-containing amino acids in sulfide detoxification by chemoautotrophic bacteria-mollusc symbioses
JOYNER, J.L.*; LEE, R.W.: The role of sulfur-containing amino acids in sulfide detoxification by chemoautotrophic bacteria-mollusc symbioses Molluscs living at hydrothermal vents and in reducing sediments are exposed to high levels of the metabolic toxin, hydrogen sulfide. Many of these molluscs harbor intracellular chemoautotrophic bacteria. The symbiotic bacteria oxidize hydrogen sulfide to power the fixation […]
The role of mucus secretion in the harvesting of symbionts during colonization of a squid light organ
NYHOLM, SV; DEPLANCKE, B; GASKINS, HR; APICELLA, M; MCFALL-NGAI, MJ: The role of mucus secretion in the harvesting of symbionts during colonization of a squid light organ The Hawaiian bobtail squid Euprymna scolopes is colonized each generation by the bioluminescent bacterium Vibrio fischeri. During colonization, host-derived ciliary currents and mucus secretions aggregate Gram-negative bacteria outside […]
Squid hemocytes are able to discriminate the specific symbiont from other types of bacteria
STEWART, J.J.; NYHOLM, S.V.; MCFALL-NGAI, M.J.: Squid hemocytes are able to discriminate the specific symbiont from other types of bacteria. The establishment of the light organ symbiosis between the Hawaiian bobtail squid Euprymna scolopes and the marine luminous bacterium Vibrio fischeri depends on specific selection for the bacterial symbiotic partner and exclusion of other potentially […]
Characterization of a p53-like protein in the morphogenesis of a light organ symbiosis
GOODSON, M.S.*; KIMBELL, J.R.; MCFALL-NGAI, M: Characterization of a p53-like protein in the morphogenesis of a light organ symbiosis The sepiolid squid Euprymna scolopes forms a specific, environmentally transmitted, light organ symbiosis with the luminescent bacterium Vibrio fischeri. On infection with V. fischeri, the juvenile light organ undergoes morphogenic change resulting in the loss of […]