Effects of different light/dark regimes and algal food on growth, fecundity, ephippial induction and molting of freshwater cladoceran, Ceriodaphnia quadrangula

Taghavi, Delaram; Farhadian, Omidvar; Soofiani, Nasrollah Mahboobi; Keivany, Yazdan

doi:10.1016/j.aquaculture.2013.06.026

Cited by 14 publications

(8 citation statements)

References 61 publications

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“…In the laboratory, the acclimatization of both lineages was performed by keeping them separately at 20°C and 12:12 hr light:dark photoperiod (Taghavi, Farhadian, Soofiani, & Keivany, 2013), for 60 days. All animals were fed ad libitum three times a week with an algal culture mainly composed of Scenedesmus sp.…”

Section: Methodsmentioning

confidence: 99%

Disentangling population strategies of two cladocerans adapted to different ultraviolet regimes

Fernández

Campero

Uvo

et al. 2018

Ecology and Evolution

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Zooplankton have evolved several mechanisms to deal with environmental threats, such as ultraviolet radiation (UVR), and in order to identify strategies inherent to organisms exposed to different UVR environments, we here examine life‐history traits of two lineages of Daphnia pulex. The lineages differed in the UVR dose they had received at their place of origin from extremely high UVR stress at high‐altitude Bolivian lakes to low UVR stress near the sea level in temperate Sweden. Nine life‐history variables of each lineage were analyzed in laboratory experiments in the presence and the absence of sub‐lethal doses of UVR (UV‐A band), and we identified trade‐offs among variables through structural equation modeling (SEM). The UVR treatment was detrimental to almost all life‐history variables of both lineages; however, the Daphnia historically exposed to higher doses of UVR (HighUV) showed a higher overall fecundity than those historically exposed to lower doses of UVR (LowUV). The total offspring and ephippia production, as well as the number of clutches and number of offspring at first reproduction, was directly affected by UVR in both lineages. Main differences between lineages involved indirect effects that affected offspring production as the age at first reproduction. We here show that organisms within the same species have developed different strategies as responses to UVR, although no increased physiological tolerance or plasticity was shown by the HighUV lineage. In addition to known tolerance strategies to UVR, including avoidance, prevention, or repairing of damages, we here propose a population strategy that includes early reproduction and high fertility, which we show compensated for the fitness loss imposed by UVR stress.

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Section: Methodsmentioning

confidence: 99%

Disentangling population strategies of two cladocerans adapted to different ultraviolet regimes

Fernández

Campero

Uvo

et al. 2018

Ecology and Evolution

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“…Light and temperature are largely acknowledged as the main triggers for hatching zooplankton resting eggs (Vandekerkhove et al, 2005). The light effect on hatching was rst acknowledged in temperate systems, where abrupt changes in the photoperiod over seasons signalize changes in food abundance and other environmental conditions (Taghavi et al 2013;Stewart et al 2017). The photoperiod in tropical ecosystems where the resting eggs of this study originated does not drastically change over seasons, but light intensity may still vary as water depth and turbidity changes, thus potentially in uencing hatching patterns.…”

Section: Discussionmentioning

confidence: 99%

Hatching Under Brownification: DOC-Mediated Changes in Physical, but Not Chemical Properties of Water Affect Hatching Patterns of Cladocera Resting Eggs

Vargas¹,

Santangelo²,

Bozelli³

2021

Preprint

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Dissolved organic carbon (DOC) is often related to the brownification of water in continental aquatic systems and to changes in the physiology of zooplankton organisms. Zooplankton resting eggs are particularly sensitive to changes in light and chemical characteristics of water, but the physical and chemical effects associated to DOC on dormant stages have never been tested before. Herein we tested how DOC affects hatching rates and time to hatching of Cladocera (Diaphanosoma birgei) resting eggs. In order to analyze the chemical (i.e. toxic) and physical (i.e. light attenuation) effects of DOC on hatching patterns, resting eggs were exposed to different concentrations of DOC in an experimental design which isolated chemical from physical effects. We observed higher hatching rates and lower time to hatching at intermediate DOC concentrations. DOC effects on hatching mainly relied on light attenuation, while chemical effects were likely of minor importance. We conclude that DOC may change Cladocera emergence patterns mainly through light attenuation in the water column.

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“…Cladocerans are preferred by most fish larvae and successfully used as food in the fish farming industry for fish larvae (Taghavi et al,2013;Armin et al, 2014). Cladocerans are considered palatable and attractive food for many ornamental fish and prawn seed (Saini et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

A review on the improvement of cladocera (Moina) nutrition as live food for aquaculture: using valuable plankton fisheries resources

Rasdi¹,

Arshad²,

Ikhwanuddin³

et al. 2020

JEB

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Effects of different light/dark regimes and algal food on growth, fecundity, ephippial induction and molting of freshwater cladoceran, Ceriodaphnia quadrangula

Cited by 14 publications

References 61 publications

Disentangling population strategies of two cladocerans adapted to different ultraviolet regimes

Disentangling population strategies of two cladocerans adapted to different ultraviolet regimes

Hatching Under Brownification: DOC-Mediated Changes in Physical, but Not Chemical Properties of Water Affect Hatching Patterns of Cladocera Resting Eggs

A review on the improvement of cladocera (Moina) nutrition as live food for aquaculture: using valuable plankton fisheries resources

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