Dispersal in freshwater invertebrates
Increased use of molecular markers has provided considerable insight into the frequency of dispersal in freshwater invertebrates, particularly for groups such as crustaceans and bryozoans that disperse passively through the transport of desiccation-resistant propagules.
The Monopolization Hypothesis and the dispersal–gene flow paradox in aquatic organisms
Group living and the effects of spatial position in aggregations of Mytilus edulis
- B. Okamura
- 1 June 1986
The mussel Mytilus edulis typically occurs in aggregations and several consequences of living in groups were studied, and it is suggested that a greater number of negative effects will arise in groups as mobility decreases.
Influence of seasonal variation in temperature, salinity and food availability on module size and colony growth of the estuarine bryozoan Conopeum seurati
Abstract Zooid size and colony growth of the estuarine bryozoan Conopeum seurati (Canu) (order: Cheilostomatida; suborder: Malacostegina) were examined over 15 mo at Avonmouth Dock, Avon, England.…
The effects of ambient flow velocity, colony size, and upstream colonies on the feeding success of bryozoa. I. Bugula stolonifera Ryland, an arborescent species
- B. Okamura
- Environmental Science, Geography
- 14 December 1984
Pliocene climate and seasonality in North Atlantic shelf seas
- M. Williams, A. Haywood, J. Zalasiewicz
- Environmental Science, GeographyPhilosophical Transactions of the Royal Society A…
- 13 January 2009
Fossil assemblages and stable isotope data demonstrate northwards extension of subtropical faunas along the coast of the Carolinas–Virginia relative to the present day, suggesting a more vigorous Florida Current, with reduced seasonality and warm water extending north of Cape Hatteras, and supports conceptual models of increased meridional heat transport for the Pliocene.
Life cycle complexity, environmental change and the emerging status of salmonid proliferative kidney disease
Environmental change is likely to cause PKD outbreaks in more northerly regions as warmer temperatures promote disease development, enhance bryozoan biomass and increase spore production, but may also reduce the geographical range of this unique multihost-parasite system.
Biodiversity and evolution of the Myxozoa.
Cymothoid isopod parasites in aquaculture: a review and case study of a Turkish sea bass (Dicentrarchus labrax) and sea bream (Sparus auratus) farm.
The first case of infection by a cymothoid isopod (Ceratothoa oestroides) in Turkish aquaculture is reported, and its effects on sea bass Dicentrarchus labrax are analyzed.
A New Class and Order of Myxozoans to Accommodate Parasites of Bryozoans with Ultrastructural Observations on Tetracapsula bryosalmonae (PKX Organism)
- E. Canning, A. Curry, S. Feist, M. Longshaw, B. Okamura
- BiologyJournal of Eukaryotic Microbiology
- 1 September 2000
Special features of the new class are the sac-like proliferative body, valve cells not covering the exit point of the polar filament, lack of a stopper-like structure sealing the exit, maintenance of valve cell integrity even at spore maturity, absence of hardened spore walls and unique structure of sporoplasmosomes in the sporoplasms.