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Temperature selection by male and female Daphnia magna exposed to different environmental stressesa and allowed to select their preferred depth in experimental tubes
| Sex | Temperature (°C) | ||
|---|---|---|---|
| Min. | Max. | Variance | |
| Male | 14.96 | 16.29 | 1.01 |
| Female | 16.26 | 20.63 | 40.18 |
aEnvironmental stresses included exposure to toxic cyanobacteria, Cylindrospermopsis raciborskii; to water which held crucian carp, Carassius carassius; and to toxic polychlorinated biphenyls (see Methods and Materials)
