Differences in heavy metal concentrations and in the response of the antioxidant system to hypoxia and air exposure in the Antarctic limpet Nacella concinna

Weihe, Ellen; Kriews, Michael; Abele, Doris

doi:10.1016/j.marenvres.2009.09.003

Cited by 49 publications

(28 citation statements)

References 28 publications

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“…In accordance with sediment data, Fe was the most bioaccumulated metal in digestive gland of A. atra atra, especially by mussels from Folías Wreck that would come from the corrosion of the ship. This highest value was 2-3 times lower than values reported for Antarctic clam Laternula elliptica (Ahn et al, 1996) and for Antarctic limpet Nacella concinna (Weihe et al, 2010) and similar to the maximum value measured in digestive gland mussel Mytilus edulis chilensis from an aquaculture area in South Patagonia . Zn and Cu were accumulated in higher proportion by mussels from Storni Dock, while Al by those from Punta Cuevas.…”

Section: Discussionsupporting

confidence: 76%

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Assessment of antioxidant responses and trace metal accumulation by digestive gland of ribbed mussel Aulacomya atra atra from Northern Patagonia

Giarratano

Gil

Malanga

2013

Ecotoxicology and Environmental Safety

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. Seasonal variations of trace metals did not appear to influence those of biochemical parameters, which generally showed an opposite trend with higher enzymatic activities in summer when trace metal concentrations were lower. Organisms from Punta Cuevas (control site) showed higher induction of reactive oxygen species production than those from both considered impacted sites, suggesting the possibility of some biochemical adaptation in organisms or a higher modulation of environmental and physiological factors on antioxidant responses than levels of trace metals. This study, which is the first in the area in this matter, showed that seasonal variations of potential biomarkers should be incorporated into interpretation of long-term biomonitoring studies in this marine coastal ecosystem.

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Section: Discussionsupporting

confidence: 76%

“…Zn and Cu were accumulated in higher proportion by mussels from Storni Dock, while Al by those from Punta Cuevas. Concentrations of Zn were higher than those reported for mussel by and for limpet N. concinna (Weihe et al, 2010). Cu was slightly higher than the value measured in mussel, but 3 times lower than that found in Antarctic clam.…”

Section: Discussioncontrasting

confidence: 65%

Assessment of antioxidant responses and trace metal accumulation by digestive gland of ribbed mussel Aulacomya atra atra from Northern Patagonia

Giarratano

Gil

Malanga

2013

Ecotoxicology and Environmental Safety

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“…These results are in line with a study of gill tissues of N. magellanica and N. deaurata from Ushuaia, Argentina by Malanga et al (2005). To the contrary, SOD and CAT activities in digestive gland varied between intertidal and sublitoral limpets at Ushuaia (Malanga et al 2004) and in the Antarctic (Weihe et al 2010), and we conclude that antioxidant enzyme activities in South American limpets are a tissue specific phenomenon which, in gills, reflects the oxygenation levels the animals encounter in their respective habitats. The antioxidant activities in gills of the Antarctic congener N. concinna (Weihe et al 2010), however, revealed considerably higher levels of both antioxidants.…”

Section: Hsr On a Biogeographic Climate Gradient Along The Patagonianmentioning

confidence: 66%

“…In the previous study, intertidal Antarctic limpets (N. concinna) had a delayed response to air exposure stress compared to their subtidal conspecifics, indicating adaptation to periodical air exposure in the intertidal specimens (Weihe et al 2010). In addition, we performed parallel experiments in which animals were kept immersed during the whole low tidal cycle, to investigate whether either the Hsp expression or the antioxidant defense systems feature intrinsic patterns adaptive to tidal periodicity, as recently observed in a microarray study of intertidal Mytilus mussels (Gracey et al 2008).…”

Section: Introductionmentioning

confidence: 83%

“…As a consequence of the steep vertical gradients in exposure, the marine intertidal is often characterized by a pronounced faunal zonation. Distinctly adapted species typically occupy different positions on the environmental gradient, but also conspecific specimens can choose microhabitats at different shore heights of rocky intertidal zones, according to their individual tolerance towards tidal exposure (Tomanek and Sanford 2003;Weihe and Abele 2008;Weihe et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Heat-shock response and antioxidant defense during air exposure in Patagonian shallow-water limpets from different climatic habitats

Pöhlmann

Koenigstein

Alter

et al. 2011

Cell Stress and Chaperones

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Climate warming involves not only a rise of air temperature means, but also more frequent heat waves in many regions on earth, and is predicted to intensify physiological stress especially in extremely changeable habitats like the intertidal. We investigated the heat-shock response (HSR) and enzymatic antioxidant defense levels of Patagonian shallow-water limpets, adapted to distinct tidal exposure conditions in the sub-and intertidal. Limpets were sampled in the temperate Northern Patagonia and the subpolar Magellan region. Expression levels of two Hsp70 genes and activities of the antioxidants superoxide dismutase (SOD) and catalase (CAT) were measured in submerged and 2-and 12-h air-exposed specimens. Air-exposed Patagonian limpets showed a tiered HSR increasing from South to North on the latitudinal gradient and from high to low shore levels on a tidal gradient. SOD activities in the Magellan region correlated with the tidal rhythm and were higher after 2 and 12 h when the tide was low at the experimental site compared to the 6 h value taken at high tide. This pattern was observed in intertidal and subtidal specimens, although subtidal individuals are little affected by tides. Our study shows that long-term thermal adaptation shapes the HSR in limpets, while the oxidative stress response is linked to the tidal rhythm. Close to the warm border of their distribution range, energy expenses to cope with stress might become overwhelming and represent one cause why the limpets are unable to colonize the shallow intertidal zone.

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Oxidative Challenges in Polar Seas

Regoli

Benedetti

Krell

et al. 2011

Oxidative Stress in Aquatic Ecosystems

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Differences in heavy metal concentrations and in the response of the antioxidant system to hypoxia and air exposure in the Antarctic limpet Nacella concinna

Cited by 49 publications

References 28 publications

Assessment of antioxidant responses and trace metal accumulation by digestive gland of ribbed mussel Aulacomya atra atra from Northern Patagonia

Assessment of antioxidant responses and trace metal accumulation by digestive gland of ribbed mussel Aulacomya atra atra from Northern Patagonia

Heat-shock response and antioxidant defense during air exposure in Patagonian shallow-water limpets from different climatic habitats

Oxidative Challenges in Polar Seas

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