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Showing 1 to 7 of 7 for “"Prosobranch"”.
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Population Dynamics and Productivity of the Prosobranch Snail Goniobasis Potosiensis
Abundance, growth, and production of Goniobasis potosiensis were studied from March 1981 to February 1982, at three locations in the James River, Missouri. A total of 24,004 snails were collected and measured. The species was univoltine and individuals lived from 19 to 21 months. Recruitment …
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The Effects of Landfill Leachate on the Behavior, Feeding Rate, and Growth Rate of the Freshwater Prosobranch Snail Elimia Potosiensis
… behavior, feeding rate, and growth rate of the prosobranch snail Elimia potosiensis by comparing two sites, one non-contaminated (Site NC) and one contaminated (Site C). The copper concentration resulting in a decreased feeding rate was also established. An in-situ enclosure experiment at Site …
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Tertiary marine prosobranchs: larval dispersal and geographic range
… ocean basin. Sixteen genera/subgenera of marine prosobranch gastropods were selected as the data base for the study. Eight of the genera were widely distributed (have fossil representatives on both the eastern and western margins of the North Atlantic Ocean) during the Neogene, and eight genera …
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Freshwater snail diversity in relation to Schistosomiasis in the middle Zambezi basin in Lusaka Province
… Physa acuta and Ferrissia burnupi burnupi. The prosobranch species consisted of Bellamya cappillata, Cleopatra nsendwensis, Gabbiella kisalensis, Gabbiella sp, Lanistes ovum and Melanoides tuberculata. Linear regression was used to determine the relationship between snail diversity (species …
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Historical and contemporary distributions of aquatic mollusks in the upper Conasauga River system of Georgia and Tennessee
… of unionids (Bivalvia: Unionidae), 11 species of prosobranch gastropods (Mollusca: Gastropoda), and 3 species of sphaerid (Bivalvia: Sphaeridae) clams. I collected records from several museums ranging from 1914 to 1990 to chronicle the historical diversity of the Conasauga River system, and …
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The escape of veligers from the egg capsules of Nassarius obsoletus and Nassarius trivittatus (gastropoda, prosobranchia)
Many species of prosobranch gastropod deposit their eggs in tough capsules affixed to hard substrates. Generally, there is a small opening near the top of such capsules, occluded by a firm plug (operculum) which must be removed before the veligers can escape. Although the removal of the operculum …