eCite Digital Repository

Grazing by Mayorella sp (Protozoa: Sarcodina) on Cyanobacteria


Laybourn-Parry, J and Jones, K and Holdich, JP, Grazing by Mayorella sp (Protozoa: Sarcodina) on Cyanobacteria, Functional Ecology, 1, (2) pp. 99-104. ISSN 0269-8463 (1987) [Refereed Article]

DOI: doi:10.2307/2389711


The feeding selectivity and reproductive rates of a Mayorella sp., an amoeba isolated from a salt marsh in Morecambe Bay, Lancashire, and fed on the cyanobacteria Anabaena cylindrica, Anabaena sp., Nostoc sp. and Calothrix sp. and the green alga Chlorella, were investigated at 26oC. Different rates of plaque extension and, in the case of cyanobacteria, reduced N-fixation (acetylene reduction), occurred with different food species. Calothrix was not observed inside food vacuoles; its morphology prevented it from being ingested. Amoeba reproductive rates varied in relation to diet, with generation times ranging between 41.6 h and 100 h, but rates of reproduction did not relate to the rates of plaque extension or acetylene reduction on any given diet, suggesting varying degrees of digestive efficiency on different algal and blue-green diets.-from Authors

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Laybourn-Parry, J (Professor Johanna Laybourn-Parry)
ID Code:49492
Year Published:1987
Web of Science® Times Cited:22
Deposited By:Research Division
Deposited On:2007-12-14
Last Modified:2011-10-06

Repository Staff Only: item control page