Population dynamics of Daphnia longispina (O.F. Müller, 1785) and Diaphanosoma brachyurum (Lievin, 1848) (Crustacea, Cladocera) under stable and graded temperature regimes

Phenology of Daphnia in a Northern Italy pond during the weather anomalous 2014

“…In general, the seasonal cycle of Daphnia depends on temperature and summer oxygen depletion (Alekseev, 2007). In accordance with general reports and with data from the Bodrio in the period 2011-2013, high Daphnia density population was recorded when temperature was between 15 and 22°C and, notwithstanding the reduction of mean temperature, a significant Daphnia population decline was recorded in late spring and early summer (Margaritora, 1985;Havel, 1985;Verbitskii et al, 2009;Rossi et al, 2014). In 2014, early seasonal peak of Daphnia was anticipated to late winter, a second late spring peak was recorded just before a sharp population decrease in June-August, and two further peaks were recorded in late August and early November.…”

Spatial distribution of juvenile and adult stages of limnetic Cladocera in relation to selected environmental factors

“…In general, most of the physico-chemical factors were more correlated with the density of juvenile than adult stages. Many studies have proved that temperature impacts the physiological processes of growth and development of Cladocera, and thus plays an important role in their seasonal dynamics (Geraldes, and Boavida 2004;Verbitskii et al 2009). However, in the studied lake, the temperature correlated only with the density of juveniles and had no effect on the density of adults.…”

Interaction of changes in food quality and temperature reveals maternal effects on fitness parameters of a keystone aquatic herbivore

“…The effects of constant temperature and intergenerational temperature change on zooplankton abundance have been shown to differ (Verbitskii et al 2009), but most studies of effects of temperature on zooplankton performance and/or food quality constraints were performed at constant temperature regimes (Masclaux et al 2009;Sperfeld and Wacker 2009;Persson et al 2011). The effects of intergenerational temperature fluctuations on zooplankton are poorly understood, and the interactions of these intergenerational temperature changes with food quality are unknown.…”