Effects of salinity and temperature on the biology of <i>Daphnia menucoensis</i> Paggi, 1996 (Crustacea, Cladocera)

Vignatti, Alicia María; Echaniz, Santiago Andrés; Cabrera, Gabriela Cecilia

doi:10.1080/10236244.2022.2047965

Cited by 5 publications

(3 citation statements)

References 40 publications

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“…Our results, though, were somewhat different from those obtained by the authors since the individuals at 5000 μS cm −1 lived for mean value of 10 days longer and evidenced twice the number of moults, thus also resulting in a higher age of the first reproduction (~25 days in the present bioassays). By contrast, laboratory bioassays done with halophyte species indicated that the organisms resisted lower salinity concentrations than those tolerated in natural waters bodies, such as in the example of D. menucoensis (Vignatti et al, 2022) whose optimum was 12 and 7 g L −1 , at 15 and 22°C, with the salinity range under natural conditions being between 6 and 43 g L −1 -for example, in the shallow saline lakes of the central pampa (Echaniz et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Strategic population responses of Daphnia spinulata Birabén, 1917 to salinity changes through laboratory bioassays

et al. 2022

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Zooplankton play a key role in aquatic ecosystems constituting an essential intermediate component in aquatic food webs. Cladocerans in particular are widely studied as model of generalist filter feeders. At the regional level, the cladoceran Daphnia spinulata is found in numerous habitats with wide conductivity range (160 μS cm −1 to 14.000 μS cm −1 ), but information about the species's tolerance range or life history is scarce. Our objective was to generate essential information about D. spinulata's life history and the main parameters related to two contrasting salinity levels representative of water bodies of the pampean plain.Results obtained in laboratory bioassays showed that individuals at low conductivity (700 μS cm −1 ) had more moults, a lower mortality and a higher life expectancy at birth, a higher generation time, and an earlier peak density than those at high-conductivity treatments (5000 μS cm −1 ). The maximum density reached was similar for both conductivities indicating a similar growth capability attained by different strategies. Moreover, the results indicated that D. spinulata at different conductivities was able to reproduce, with the offspring thus contributing to population growth. This study provided a knowledge of the life history strategies of this endemic cladoceran at two different conductivities, thus generating crucial information on the population dynamics and for evaluating the species's role as a possible salinity indicator in pampean water bodies. Nevertheless, future investigations will be necessary in order to identify the absolute limits of tolerance and the optimum conductivity for this species and determinate which stressors will act as a mictic stimuli. ResumenEl zooplancton cumple un papel esencial en los ecosistemas acuáticos, constituyendo un eslabón intermedio en las tramas tróficas acuáticas. Los cladóceros, en particular, son ampliamente estudiados como modelos de filtradores generalistas. A nivel regional, el cladócero Daphnia spinulata es encontrado en numerosos ambientes con un amplio rango de conductividad (desde 160 μS cm −1 hasta 14.000 μS cm −1 ), pero la información en relación a sus rangos de tolerancia o historia de vida, es muy escasa. Nuestro objetivo fue

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Section: Discussionmentioning

confidence: 99%

Strategic population responses of Daphnia spinulata Birabén, 1917 to salinity changes through laboratory bioassays

et al. 2022

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“…The stock culture was maintained at 22°C (± 1°C) with a light:dark photo-period of 16:8 h. The culture media were changed weekly and the organisms were fed with Chlorella vulgaris from axenic cultures three times per week, as described in Vignatti et al (2022).…”

Section: Culture Of D Spinulatamentioning

confidence: 99%

“…The salinization of water and soil could be, on the one hand, due to natural processes such as rock weathering or marine sprays or, on the other hand, due to the result of various anthropogenic activities such as agriculture, mining, industry, sewage wastes and climate change, among others ( ). However, its range of tolerance to salinity is unknown (but see Vignatti et al 2019). This is crucial because the species' survival in these ecosystems depends on the extent of this tolerance (Goncalvez et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Daphnia spinulata Birabén, 1917 to glyphosate at different salinity levels

Lares,

Vignatti,

Echaniz

et al. 2024

Environ Sci Pollut Res

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Daphnia spinulata Birabén, 1917 is an endemic cladoceran species, frequent in the zooplankton communities of the shallow lakes of the Pampean region of Argentina. These lakes have varying salinity levels and, being located in agricultural areas, are frequently subject to pesticide pollution. This study aimed to determine the effects of the herbicide glyphosate (Panzer Gold®) in combination with different salinity levels on the biological parameters of D. spinulata and its recovery ability after a short exposure. Three types of assays were performed: an acute toxicity test, a chronic assessment to determine survival, growth and reproduction, and recovery assays under optimal salinity conditions (1 g L − 1 ). The LC 50 -48h of glyphosate was 7.5 mg L − 1 (3. 15-11.72). Longevity and the number of offspring and clutches were signi cantly reduced by glyphosate and high salinity exposure, whether in isolation or combined. The timing of the rst offspring did not recover after glyphosate exposure. Our results reveal that D. spinulata is sensitive to the herbicide, which causes stronger negative effects in conditions of higher salinity. Further research is needed to shed further light on the sensitivity of this cladoceran to glyphosate and its variability under other interactive stress factors.

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Combined effects of two abiotic stressors (salinity and temperature) on a laboratory-simulated population of Daphnia longispina

et al. 2023

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Sea level rise is expected to continue apace, with a concomitant rise in temperature on the globe's surface. Natural populations genetic pool compromised by increased salinity would contribute to decrease resilience under future temperature changes. Therefore, this work aimed to understand the long-term effects of salinization on the genetic diversity of a cladoceran-simulated laboratory population under different temperature regimes. For that, six clonal lineages of the cladoceran Daphnia longispina were chosen based on their reported differential lethal sensitivity (LCx) to salinity. The chronic experiment was initiated when each individual clonal lineage reached the population’s carrying capacity, and then were exposed to the LC70,48 h for the most tolerant clonal lineage of D. longispina (corresponding to 5.91 mS/cm) to 17°C, 20°C and 23°C for at least 30 days. Salinity affected D. longispina survival and reproduction, with the disappearance of salt-tolerant earlier than salt-sensitive lineages after chronic exposures. Different sensitivity ranks were observed for clonal lineages when comparing short-term and chronic survival, most probably due to acclimation-driven population recovery. Non-optimal tested temperatures (17°C and 23°C) enhanced negative effects of salinity through loss of the most sensitive clonal lineages, suggesting a potential future synergistic effect between both abiotic factors.

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Effects of salinity and temperature on the biology of Daphnia menucoensis Paggi, 1996 (Crustacea, Cladocera)

Cited by 5 publications

References 40 publications

Strategic population responses of Daphnia spinulata Birabén, 1917 to salinity changes through laboratory bioassays

Strategic population responses of Daphnia spinulata Birabén, 1917 to salinity changes through laboratory bioassays

Sensitivity of Daphnia spinulata Birabén, 1917 to glyphosate at different salinity levels

Combined effects of two abiotic stressors (salinity and temperature) on a laboratory-simulated population of Daphnia longispina

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