Differential tolerance to ultraviolet-B light and photoenzymatic repair in cladocerans from a Chilean lake

Ramos‐Jiliberto, Rodrigo; Dauelsberg, Patricia; Zúñiga, Luis Rodríguez

doi:10.1071/mf03027

Cited by 15 publications

(18 citation statements)

References 41 publications

(47 reference statements)

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“…This study demonstrated that the UV sensitivity of D. magna, 1 4 days of age, decreased with age at exposure. Similarly, Ramos-Jiliberto et al (14) showed that Ceriodaphnia duhia less than 48 h of age exposed to either UV-B, or UV-B with simultaneous exposure to UV-A and PAR were significantly more sensitive than adults of the same species. Clearly, consideration of the age distribution of a population and knowledge of the age-related impact of UV exposure on a species are important in making predictions regarding the effects of UV radiation on populations or communities.…”

Section: Discussionmentioning

confidence: 85%

“…Harmful effects of UV-B radiation on freshwater organisms have been demonstrated for primary producers (4), zooplankton including rotifers (5,6), copepods (7) and cladocerans (5,8,(9)(10)(11)(12)(13)(14), and fish (8,15). Of the few aquatic organisms studied for age-related vulnerability to UV-B radiation, most become less sensitive to UV-B with age (14-18).…”

Section: Introductionmentioning

confidence: 99%

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Age-Dependent Survival, Reproduction and Photorepair Activity in Daphnia magna (Straus, 1820) After Exposure to Artificial Ultraviolet Radiation

Huebner

Young

Loadman

et al. 2006

Photochem Photobiol

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We examined age-related vulnerability of Daphnia magna to UV-B (ultraviolet-B radiation, 280-320 nm), the age-related relationships between UV-B dosage and reproduction, and the effects of duration of PRR (photorecovery radiation) on survival and fecundity. Animals were exposed to 0, 6, 9 or 12 h UV-B (peak emission 312 nm) at 1, 2, 3 or 4 days of age and followed to 12 days. Survival decreased with increasing exposure to UV-B, but increased with age at exposure. Duration of UV-B, but not age at exposure, decreased offspring production. Survival increased with an increase in duration of PRR for animals of all ages; however, the effect was not age related. Three-day-old animals were exposed to 6 h of UV-B followed by 0-600 min of PRR. Survival was greatest in controls, lowest in the group that received no PRR and similar for all other groups. Most mortality occurred within the first 72 h postirradiation. Offspring production was highest in light controls, lowest in the UV-B-exposed group that received no PRR and not significantly different among other groups. This study demonstrates the need to consider age when examining the effects of UV-B on zooplankton and the need to monitor responses over a sufficient length of time.

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Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Age-Dependent Survival, Reproduction and Photorepair Activity in Daphnia magna (Straus, 1820) After Exposure to Artificial Ultraviolet Radiation

Huebner

Young

Loadman

et al. 2006

Photochem Photobiol

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“…One remaining issue that is yet to be resolved is whether juvenile Daphnia are more UV tolerant than adults as suggested by Hansson and Hylander (2009) or less UV tolerant as indicated in other experiments (Huebner et al 2006). Age-dependent mortality resulting from greater growth rates and high surface-area-to-volume ratios in juveniles have been shown to result in juveniles responding more strongly to UV in situ (Ramos-Jiliberto et al 2004;Huebner et al 2006). Studies show that juvenile daphnids, copepods, and early Chaoborus instars are less tolerant to UV than adults (Leech and Williamson 2000).…”

Section: Discussionmentioning

confidence: 97%

“…Age-dependent mortality resulting from greater growth rates and high surface-area-to-volume ratios in juveniles have been shown to result in juveniles responding more strongly to UV in situ (Ramos-Jiliberto et al 2004;Huebner et al 2006). Studies show that juvenile daphnids, copepods, and early Chaoborus instars are less tolerant to UV than adults (Leech and Williamson 2000).…”

Section: Discussionmentioning

confidence: 99%

The role of ultraviolet radiation and fish in regulating the vertical distribution of Daphnia

Rose

Williamson

Fischer

et al. 2012

Limnology & Oceanography

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Previous studies have demonstrated independent effects of both solar ultraviolet radiation (UV; 280-400 nm) and planktivorous fish on the vertical distribution of Daphnia. We examined the behavioral response of adult and juvenile Daphnia to both UV and planktivorous fish simultaneously in a small temperate lake in eastern Pennsylvania by conducting a large-scale (15 m deep) in situ mesocosm experiment with full factorial treatments (6 UV and 6 fish). UV induced an avoidance of the surface waters in both juvenile and adult Daphnia. In contrast, the response of Daphnia to fish depended on the presence of UV, with a clear interactive effect. In the presence of both UV and fish, Daphnia were deeper in the water column than they were in the absence of either UV or fish. Sampling of the lake also revealed a rapid upward shift in the depth distribution of both juveniles and adults following a rare and intense early-summer storm that reduced the lake's transparency to both UV (for example, 380 nm UV-A) and photosynthetically active radiation (400-700 nm) by 44% and 39%, respectively. Evidence of a novel benefit to UV avoidance behavior was also observed: surface avoidance of UV reduces the hazards of Daphnia getting caught in the surface air-water interface and perishing. These results highlight the interactive effects of fish and UV on Daphnia vertical distribution under near-natural conditions in situ.

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“…Several species of the freshwater microcrustacean Daphnia are among the most thoroughly studied, and differences exist among species and among populations in photoprotective melanin pigmentation (Hebert & Emery 1990;Hessen 1996;Scoville & Pfrender 2010) and the propensity to vertically migrate away from UVR (Leech et al 2005;Williamson et al 2011). In addition, DNA photorepair is a key UVR tolerance mechanism for zooplankton (Malloy et al 1997;Zagarese et al 1997;Grad et al 2001Grad et al , 2003Williamson et al 2002;Ramos-Jiliberto et al 2004;Tartarotti et al 2014), including Daphnia Williamson et al 2001;MacFadyen et al 2004), where it differs in efficiency among species (Connelly et al 2009). How existing interspecies differences in DNA photorepair efficiency arose is a question with considerable evolutionary significance.…”

Section: Introductionmentioning

confidence: 99%

Divergence in DNA photorepair efficiency among genotypes from contrasting UV radiation environments in nature

et al. 2015

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Populations of organisms routinely face abiotic selection pressures, and a central goal of evolutionary biology is to understand the mechanistic underpinnings of adaptive phenotypes. Ultraviolet radiation (UVR) is one of earth's most pervasive environmental stressors, potentially damaging DNA in any organism exposed to solar radiation. We explored mechanisms underlying differential survival following UVR exposure in genotypes of the water flea Daphnia melanica derived from natural ponds of differing UVR intensity. The UVR tolerance of a D. melanica genotype from a high-UVR habitat depended on the presence of visible and UV-A light wavelengths necessary for photoenzymatic repair of DNA damage, a repair pathway widely shared across the tree of life. We then measured the acquisition and repair of cyclobutane pyrimidine dimers, the primary form of UVR-caused DNA damage, in D. melanica DNA following experimental UVR exposure. We demonstrate that genotypes from high-UVR habitats repair DNA damage faster than genotypes from low-UVR habitats in the presence of visible and UV-A radiation necessary for photoenzymatic repair, but not in dark treatments. Because differences in repair rate only occurred in the presence of visible and UV-A radiation, we conclude that differing rates of DNA repair, and therefore differential UVR tolerance, are a consequence of variation in photoenzymatic repair efficiency. We then rule out a simple gene expression hypothesis for the molecular basis of differing repair efficiency, as expression of the CPD photolyase gene photorepair did not differ among D. melanica lineages, in both the presence and absence of UVR.

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Differential tolerance to ultraviolet-B light and photoenzymatic repair in cladocerans from a Chilean lake

Cited by 15 publications

References 41 publications

Age-Dependent Survival, Reproduction and Photorepair Activity in Daphnia magna (Straus, 1820) After Exposure to Artificial Ultraviolet Radiation

Age-Dependent Survival, Reproduction and Photorepair Activity in Daphnia magna (Straus, 1820) After Exposure to Artificial Ultraviolet Radiation

The role of ultraviolet radiation and fish in regulating the vertical distribution of Daphnia

Divergence in DNA photorepair efficiency among genotypes from contrasting UV radiation environments in nature

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