Effects of ultraviolet-B stressed diatom food on the reproductive output in Mediterranean Calanus helgolandicus (Crustacea; Copepoda)

Kouwenberg, J. H. M.; Lantoine, François

doi:10.1016/j.jembe.2006.10.047

Cited by 22 publications

(14 citation statements)

References 72 publications

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“…In this experiment the dose of irradiation of 45.9 KJ/m 2 was sufficient to generate changes in cell morphology. It was observed a migration chloroplast to the periphery, nearby de cell wall and the increase of the cell volume, also described by Kouwenber and Lantoine [27]. At the same time, these results cannot be extrapolated to what happens in oceanic conditions or in the sea of Chile.…”

Section: The Action Of Ultra-violet Raysmentioning

confidence: 73%

“…The final dose was calculates in 45.9 KJ•m −2 , concerning the radiation of 15.3 KJ•m −2 found at 1 m depth accumulated over three days, as described [27].…”

Section: Experimental Designmentioning

confidence: 99%

“…We can assume that the path of enzymes involved in the synthesis of PUA remained active with no direct effect by UV light in their functions. Kouwenber and Lantoine [27] suggested that the effect of ultra-violet in Skeletonema costatum cells, could potentiate their toxicity through the synthesis of secondary metabolites, subjected to UV irradiation, mainly for the production of reactive oxygen species (ROS). In this study we found that the ultra-violet has a direct effect on the physiology of microalgae promoting similar conditions of radiation in temperate zones.…”

Section: The Action Of Ultra-violet Raysmentioning

confidence: 99%

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The Effect of UV Light and CO2 in the Production of Polyunsaturated Aldehydes in Skeletonema costatum (Bacillariophycea)

Pacheco¹,

Uribe²,

Pino³

et al. 2014

AJPS

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Skeletonema costatum was submitted to two experiments using UV lights and CO2with the purpose of observing changes in the lipids profile and the synthesis of polyunsaturated aldehydes (PUA) after cell disruption. When cells receive CO2 supply, it was noticed that the production of PUA was significantly lower. The same was observed when the culture was treated with a dose of 45.9 kJ•m −2 of ultraviolet A/B ray. The premise to all experiments was the production of 2,4-heptadienal compared to the supply of EPA as substrate. As a result, the same synthesis rate was observed both when the CO2 treatment was applied and in the experiment control. On the other hand, the culture subjected to ultraviolet radiation showed a 68% greater demand with the utilization of the substrate. These observations suggested that EPA was consumed before cell disruption and was probably exuded to the surrounding environment as a sign of stress. Changes in cell morphology could be observed by the migration of the chloroplast nearby the cell wall, where PUA was produced, indicating a defense strategy.

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Section: The Action Of Ultra-violet Raysmentioning

confidence: 73%

“…The final dose was calculates in 45.9 KJ•m −2 , concerning the radiation of 15.3 KJ•m −2 found at 1 m depth accumulated over three days, as described [27].…”

Section: Experimental Designmentioning

confidence: 99%

Section: The Action Of Ultra-violet Raysmentioning

confidence: 99%

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The Effect of UV Light and CO2 in the Production of Polyunsaturated Aldehydes in Skeletonema costatum (Bacillariophycea)

Pacheco¹,

Uribe²,

Pino³

et al. 2014

AJPS

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“…In addition to the decreased egg production and increased proportion of naupliar deformities (Kouwenberg & Lantoine, 2007), exposure to UVR can kill marine copepods directly (Lacuna & Uye, 2000; Fig. 4 Absorption spectra of the methanol extract of the copepods Pseudodiaptomus marinus and Labidocera bipinnata.…”

Section: Discussionmentioning

confidence: 99%

Impacts of UV radiation on respiration, ammonia excretion, and survival of copepods with different feeding habits

Gao

2012

Hydrobiologia

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Solar ultraviolet radiation (UVR) is known to harm aquatic organisms by damaging key molecules. Here, we showed that UV-A as well as UV-B affected differentially the respiration, ammonia excretion, and mortality of the copepods Pseudodiaptomus marinus (herbivorous) and Labidocera bipinnata (omnivorous). Adding UV-A (320-400 nm, 62.4 W m -2 ) to PAR (400-700 nm, 278 W m -2 ) decreased respiration by 10.2% in P. marinus and 46.1% in L. bipinnata, and additionally, the presence of UV-B (280-320 nm, 2.63 W m -2 ) further decreased it by 8.1 and 18.8%, respectively. The ammonia excretion of P. marinus was suppressed by 13.9% in 30 min exposures to PAR ? UV-A compared with those receiving PAR only; however, in the presence of UV-B, it decreased by 13.8% compared to the control. In L. bipinnata, exposure to PAR decreased the ammonia excretion by 33.4%, while the presence of UV-B caused additional suppression by 15.8%. The mortalities of both copepod species increased with prolonged duration under all radiation treatments. More carotenoids and UV-absorbing compounds were found in P. marinus than in L. bipinnata, which could have been responsible for the higher resistance of the former to solar UVR.

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“…UVR can also impose effects on copepod fitness, that is, grazing. The few reported effects of UVR on feeding are contradictory; higher (Fields et al, ) or lower (Kouwenberg & Lantoine, ) grazing rates were observed when phytoplankton were exposed to UVR, and virtually nothing is known about the effects of UVR on feeding when only the grazer is exposed. Lacuna and Uye () found that feeding of the marine copepod Acartia omorii was diminished by exposure to UV‐B, but the feeding rates were indirectly determined by the gut pigmentation and no direct clearance rate was measured.…”

Section: Introductionmentioning

confidence: 99%

Effect of ultraviolet radiation on clearance rate of planktonic copepods with different photoprotective strategies

Laspoumaderes

Navarro

Souza

et al. 2019

Internat Rev Hydrobiol

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We studied two populations of Boeckella gracilipes and two populations of Boeckella gibbosa that inhabit mountain lakes from North-Patagonian Andes with different optical properties. We combined field and laboratory experiments to determine the effects of ultraviolet radiation (UVR) on clearance rate among these taxa that had different UVR defences. The copepod populations differed in photoprotective compounds (carotenoids and mycosporine-like amino acids [MAAs]) and antioxidant enzymes (glutathione S-transferase [GST]). These variations were related to elevation, dissolved organic carbon content and the optical features of the inhabited lakes. Laboratory experiments showed a decrease in the clearance rate (CR) in all populations exposed to UVR. Consistently, the long-term field experiment showed a negative impact of UVR on CR. We conclude that UVR exposure affects feeding, however, the magnitude of this negative effect depends on the exposure intensity and the photoprotective mechanisms used by zooplankton. K E Y W O R D Sfeeding rate, lake copepods, oxidative stress, photoprotection plasticity, UVR wileyonlinelibrary.com/journal/iroh Internat Rev Hydrobiol. 2019;104:34-44.

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Effects of ultraviolet-B stressed diatom food on the reproductive output in Mediterranean Calanus helgolandicus (Crustacea; Copepoda)

Cited by 22 publications

References 72 publications

The Effect of UV Light and CO<sub>2</sub> in the Production of Polyunsaturated Aldehydes in <i>Skeletonema costatum</i> (Bacillariophycea)

The Effect of UV Light and CO<sub>2</sub> in the Production of Polyunsaturated Aldehydes in <i>Skeletonema costatum</i> (Bacillariophycea)

Impacts of UV radiation on respiration, ammonia excretion, and survival of copepods with different feeding habits

Effect of ultraviolet radiation on clearance rate of planktonic copepods with different photoprotective strategies

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Effects of ultraviolet-B stressed diatom food on the reproductive output in Mediterranean Calanus helgolandicus (Crustacea; Copepoda)

Cited by 22 publications

References 72 publications

The Effect of UV Light and CO&lt;sub&gt;2&lt;/sub&gt; in the Production of Polyunsaturated Aldehydes in &lt;i&gt;Skeletonema costatum&lt;/i&gt; (Bacillariophycea)

The Effect of UV Light and CO&lt;sub&gt;2&lt;/sub&gt; in the Production of Polyunsaturated Aldehydes in &lt;i&gt;Skeletonema costatum&lt;/i&gt; (Bacillariophycea)

Impacts of UV radiation on respiration, ammonia excretion, and survival of copepods with different feeding habits

Effect of ultraviolet radiation on clearance rate of planktonic copepods with different photoprotective strategies

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The Effect of UV Light and CO<sub>2</sub> in the Production of Polyunsaturated Aldehydes in <i>Skeletonema costatum</i> (Bacillariophycea)

The Effect of UV Light and CO<sub>2</sub> in the Production of Polyunsaturated Aldehydes in <i>Skeletonema costatum</i> (Bacillariophycea)