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Sodium influx in isolated gills of the freshwater mussel,Ligumia subrostrata
Isolated gills of the freshwater mussel, Ligumia subrostrata , accumulate Na from a pondwater bathing medium. The rate of Na transport by the isolated...
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A continuous-flow system for growing fresh-water sponges in the laboratory
Two fresh-water sponge species, Ephydatia fluviatilis and Spongilla alba , were grown from gemmules in the laboratory. A system incorporating a...
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Behavioral aspects of host recognition by the symbiotic water mite Unionicola formosa (Acarina, Unionicolidae)
The occurrence and specificity of host recognition behavior of adult and nymphal Unionicola formosa and the capability of adult mites to recolonize...
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The St. Lawrence River in winter: population structure, biomass, and pattern of its primary and secondary food web components
Plankton and benthic invertebrate populations were examined along a 160 km section of the St. Lawrence River between Lake Ontario and Waddington, New...
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A Survey of Invertebrate Metamorphosis
Because of the great variety and numbers of insects, together with their undoubted economic importance, it is sometimes forgotten that they are...
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Effects of Tubificid Oligochaetes on Physical and Chemical Properties of Lake Erie Sediments
Laboratory experiments and field observations show that tubificid oligochaetes have important effects on sediment properties. Tubificids pelletize...
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Structure, dynamics and production of the benthic fauna in Lake Manitoba
The structure and diversity, including seasonal variation, and the energy budget of the benthic fauna in southern Lake Manitoba were studied and...
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Absolute Population Estimates by Sampling a Unit of Habitat — Freshwater Habitats
Phyla other than the Arthropoda are well represented in this habitat, but it is not intended in this chapter to detail the methods for the study of...
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Absolute Population Estimates by Sampling a Unit of Habitat — Freshwater Habitats
Phyla other than the Arthropoda are well represented in this habitat, but it is not intended in this chapter to detail the methods for the study of...
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Physiological basis of the species abundance-salinity relationship in molluscs: A speculation
The relationship between the osmotic pressures of the blood and the ambient medium was determined for 4 species of bivalve molluscs whose habitats...
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Constituents of unionid extrapallial fluid. ii ph and metal ion composition
The extrapallial fluid of Unionids is being studied to obtain a more complete understanding of its composition and the relationship of its components...
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Biomass turnover in populations of viviparous sphaeriid clams: Comparisons of growth, fecundity, mortality and biomass production
This paper reports studies carried out on natural populations of two species of viviparous clams, Sphaerium striatinum and S. simile , at three...
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A note on the hyperosmotic regulation in the brackish-water clamRangia cuneata
The brackish-water clam Rangia cuneata maintains the body fluids hyperosmotic to diluted sea-water of osmolalities less than 200–300 mOsm (Fig. 1)....
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The effects of salt depletion on blood and tissue ion concentrations in the freshwater mussel,Ligumia subrostrata (Say)
The extracellular and intracellular fluid volumes of pondwater acclimated Ligumia subrostrata are equal (3.9 ml/g dry tissue). Total blood solute is...
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Ionic regulation in the freshwater mussel,Ligumia subrostrata (Say)
The freshwater mussel, Ligumia subrostrata , maintains an ionic and osmotic steady state in an artificial pond water. Blood osmolality is 50 mOsm/l...
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Models for Parasite Populations
Ecological concepts and ecologists have played a prominent role in the development of two rather different kinds of models for dealing with...
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Hydrobiological Observations in Surinam
The construction of large reservoirs such as the man-made Brokopondo lake, is certainly not the result of proposals and conclusions of biological...
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Das Dispersionsmuster von Teichmuscheln (Anodonta) im Zürichsee
The dispersion pattern of mussels belonging to the genus Anodonta has been studied in a shallow area of Lake Zurich. Starting in July 1970, mussels...