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Studies on Plankton Parasites

Studies on Plankton Parasites Abstract This paper deals with the interrelations of populations of plankton organisms and their parasites in two English lakes. The organisms considered are diatoms, mainly Asterionella farmosa but also Tabellaria fenestrata var. asterionelloides , Fragilaria crotonensis , and Melosira italica , with a blue-green Oscillatoria agardhii var. isothrix . The parasites are the Chytrids Rhizophidium planktonicum on diatoms and R. megarrhizum on Oscillatoria . The parasites may delay the time of maximum algal number or may decrease the size of the maximum. Generally parasitism of one alga favoura the development of others. Various other complexities arise from the interaction of these factors with nutritional conditions. © Oxford University Press http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annals of Botany Oxford University Press

Studies on Plankton Parasites

Abstract

Abstract This paper deals with the interrelations of populations of plankton organisms and their parasites in two English lakes. The organisms considered are diatoms, mainly Asterionella farmosa but also Tabellaria fenestrata var. asterionelloides , Fragilaria crotonensis , and Melosira italica , with a blue-green Oscillatoria agardhii var. isothrix . The parasites are the Chytrids Rhizophidium planktonicum on diatoms and R. megarrhizum on Oscillatoria . The parasites may delay the time of maximum algal number or may decrease the size of the maximum. Generally parasitism of one alga favoura the development of others. Various other complexities arise from the interaction of these factors with nutritional conditions. © Oxford University Press
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