Aquatic invertebrate diversity in Apostle Islands and Isle Royale waters: comparison among habitats and sampling gears and to open Lake Superior. [PDF]
J Great Lakes ResTrebitz A +4 more
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Assessment of hydrological, geological, and biological parameters of a river basin impacted by old Hg mining in NW Spain. [PDF]
Environ Sci Pollut Res IntEscudero L +6 more
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Organisms Diversity and Evolution, 2006 The pea clams Sphaeriidae represent a major molluscan freshwater radiation with cosmopolitan distribution in all kinds of lotic and lentic habitats.
Matthias Glaubrecht
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Growth of two Pisidium (Bivalvia, Sphaeriidae) species in the laboratory
Oecologia, 1980Growth of Pisidium casertanum and P. subtruncatum from the profundal of the eutrophic Lake Esrom was followed at four temperatures in the laboratory. The growth rate of both species increased with increasing temperature, but the maximum in P. casertanum was attained at 12° C, instead of at 20° C as in P. subtruncatum.
Funk, Andrea, Reckendorfer, Walter
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Phylogenetic analysis of the Sphaeriidae (Mollusca: Bivalvia) based on partial mitochondrial 16s rDNA gene sequences [PDF]
Invertebrate Biology, 2000 We have constructed molecular phylogenetic trees for members of the Sphaeriidae in order to test proposed generic level relationships, and to reconstruct the evolutionary pattern of parental care, in this exclusively freshwater family of heterodont ...
Diarmaid O Foighil
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Anatomy of New Zealand species of the family Sphaeriidae (Bivalvia, Eulamellibranchia)
Molluscan Research, 1999 Abstract Mantle edge, gills, brood pouches and nephridia are described in Musculium novaezelandiae (Deshayes 1854), Pisidium hodgkini (Suter, 1905) and P. novaezelandiae Prime, 1862. Affinity of the first species to the subgenus Sphaerinova Iredale and placement of the second one in the subgenus Afropisidium Kuiper is confirmed by anatomical characters.
Korniushin, Alexei V +1 more
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The distribution and conservation of threatened Sphaeriidae on British grazing marshland
Biodiversity and Conservation, 2005Freshwater sphaeriid bivalves are poorly known ecologically, particularly uncommon species such as Pisidium pseudosphaerium (UK RDB (Red Data Book) staus = ‘rare’). In the UK, this species occupies grazing marsh where conservation opportunities might be shared with other threatened molluscs. We surveyed sphaeriids including P.
Alisa M. Watson, S.J. Ormerod
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Significance of Litter Size in Musculium Securis (Bivalvia: Sphaeriidae)
Ecology, 1978Experiments were carried out to determine the effects of population density on the natality of Musculium securis (Prime). Laboratory studies showed that: (1) total recruitment increased with increasing densities of parental stock, to an asymptotic value, (2) that recruitment was greater than the reproductive carrying capacity, and (3) that the total ...
G. L. Mackie, S. U. Qadri, R. M. Reed
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Carbon dioxide output in the respiration of three Pisidium species (Bivalvia, Sphaeriidae)
Oecologia, 1977The carbon dioxide output in respiration of Pisidium casertanum, P. henslowanum and P. conventus was studied in the laboratory. A closedbottle method was used, and the amount of dissolved inorganic carbon was measured with an infrared gas analyser. The mean value of the constant b in equation R=aW b, where R is the respiration rate and W the ash-free ...
I J, Holopainen, E, Ranta
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