Physiological Response of the Freshwater Mussel Unio douglasiae in Microcystis aeruginosa Bloom Waters

Table 3

Algal removal activity (ARE) of Unio douglasiae in river water (RW) and lake water (LW). . Zero and negative values indicate the absence of and increase in algal density, respectively, following mussel introduction. Asterisks indicate new detectable phytoplankton observed following mussel introduction.

Water type	Species observed	ARE (%)
		0.3 individuals·L^-1	1.0 individuals·L^-1	2.0 individuals·L^-1
RW	Anabaena flos-aquae
	Ankistrodesmus falcatus	0.0	-133.3	0.0
	Asterionella formosa	65.2	11.4	15.6
	Cryptomonas ovata
	Diatoma vulgare	40.0	40.0	100.0
	Microcystis aeruginosa	100.0	96.6	100.0
	Navicula sp.	100.0	100.0	100.0
	Nitzschia holisatica
	Pinnularia major	0.0	0.0	100.0
	Stephanodiscus hantzschii	78.5	51.4	68.4
	Synedra ulna
LW	Aulacoseira granulata	100.0	36.4	100.0
	Chroococcus turgidus	58.1	-3.2	-35.5
	Cryptomonas ovata	92.9	87.5	46.4
	Diatoma vulgare	61.1	30.6	55.6
	Melosira varians	100.0	83.3	100.0
	Microcystis aeruginosa
	Navicula sp.	100.0	100.0	0.0
	Pediastrum simplex	100.0	-87.5	-100.0
	Scenedesmus acuminatus	100.0	-140.0	-180.0
	Scenedesmus quadricauda	53.8	68.4	57.1
	Synedra ulna	24.2	17.7	29.1
	Tetraedron caudatum	0.0	11.1	33.3