Geographical variation in rotifers associated with Microcystis blooms

Abstract

Lake George, Uganda, lies on the equator and shows little variation in temperature or in the dominance of Microcystis in the phytoplankton. The dominant planktonic rotifers in Lake George are compared to those found in lakes in other parts of the world, ranging from tropical and subtropical lakes with semi-permanent blooms of Microcystis to temperate localities with summer blooms or less regular blooms at multiannual intervals. A modified Sorensen Similarity Index is used to show a latitudinal gradient in the rotifers associated with Microcystis.

Tropical cyanobacterial blooms: a review of prevalence, problem taxa, toxins and influencing environmental factors

“…1). Blooms in Australian water bodies were tested using mouse bioassays in the 1990s, and later by HPLC for more detailed toxin results (Saker and Griffiths, 2001;Griffiths and Saker, 2003;White et al, 2003;Bor- (Mizuno and Mori, 1970;Lewis 1973Lewis , 1978Green et al, 2004). In the case of tropical Africa, many of the blooms were detected in reservoirs and lakes used for drinking water, highlighting a need for toxicity testing in these countries (Akin-Oriola et al, 2006 o n l y McGregor and Fabbro, 2000;Saker and Griffiths, 2001; o n l y Saker and Griffiths, 2001;Griffiths and Saker, 2003; o n l y .…”

Ecological mechanisms regulating the dynamics of the field rotifer population in a subtropical lake: evidence from the density, reproduction, and morphology of a case rotifer,Brachionus angularis

“…Brachionus angularis is one of the most frequent rotifer species in plankton dominated by Microcystis spp. (Green 2011). It is preferred in aquaculture and ecotoxicology research focusing on the effects of environmental factors on population growth rate (Gama-Flores et al 2004;Hu and Xi 2008;Ogata et al 2011;Miracle et al 2014;Matus et al 2017).…”