Effect of water quality and confounding factors on digestive enzyme activities in Gammarus fossarum.
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| Title: | Effect of water quality and confounding factors on digestive enzyme activities in Gammarus fossarum. |
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| Authors: | Charron, L.1 laetitia.charron@univ-reims.fr, Geffard, O.2, Chaumot, A.2, Coulaud, R.2, Queau, H.2, Geffard, A.1, Dedourge-Geffard, O.1 |
| Source: | Environmental Science & Pollution Research. Dec2013, Vol. 20 Issue 12, p9044-9056. 13p. |
| Subject Terms: | *Water quality, *Digestive enzymes, *Gammaridae, *Digestion, *Reproduction, *Power resources, *Temperature effect, *Biomarkers |
| Abstract: | The feeding activity and subsequent assimilation of the products resulting from food digestion allow organisms to obtain energy for growth, maintenance and reproduction. Among these biological parameters, we studied digestive enzymes (amylase, cellulase and trypsin) in Gammarus fossarum to assess the impact of contaminants on their access to energy resources. However, to enable objective assessment of a toxic effect of decreased water quality on an organisms’ digestive capacity, it is necessary to establish reference values based on its natural variability as a function of changing biotic and abiotic factors. To limit the confounding influence of biotic factors, a caging approach with calibrated male organisms from the same population was used. This study applied an in situ deployment at 23 sites of the Rhone basin rivers, complemented by a laboratory experiment assessing the influence of two abiotic factors (temperature and conductivity). The results showed a small effect of conductivity on cellulase activity and a significant effect of temperature on digestive enzyme activity but only at the lowest temperature (7 °C). The experimental conditions allowed us to define an environmental reference value for digestive enzyme activities to select sites where the quality of the water impacted the digestive capacity of the organisms. In addition to the feeding rate, this study showed the relevance of digestive enzymes as biomarkers to be used as an early warning tool to reflect organisms’ health and the chemical quality of aquatic ecosystems. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 92555928 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effect of water quality and confounding factors on digestive enzyme activities in Gammarus fossarum. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Charron%2C+L%2E%22">Charron, L.</searchLink><relatesTo>1</relatesTo><i> laetitia.charron@univ-reims.fr</i><br /><searchLink fieldCode="AR" term="%22Geffard%2C+O%2E%22">Geffard, O.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chaumot%2C+A%2E%22">Chaumot, A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Coulaud%2C+R%2E%22">Coulaud, R.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Queau%2C+H%2E%22">Queau, H.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Geffard%2C+A%2E%22">Geffard, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dedourge-Geffard%2C+O%2E%22">Dedourge-Geffard, O.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Pollution+Research%22">Environmental Science & Pollution Research</searchLink>. Dec2013, Vol. 20 Issue 12, p9044-9056. 13p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Water+quality%22">Water quality</searchLink><br />*<searchLink fieldCode="DE" term="%22Digestive+enzymes%22">Digestive enzymes</searchLink><br />*<searchLink fieldCode="DE" term="%22Gammaridae%22">Gammaridae</searchLink><br />*<searchLink fieldCode="DE" term="%22Digestion%22">Digestion</searchLink><br />*<searchLink fieldCode="DE" term="%22Reproduction%22">Reproduction</searchLink><br />*<searchLink fieldCode="DE" term="%22Power+resources%22">Power resources</searchLink><br />*<searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br />*<searchLink fieldCode="DE" term="%22Biomarkers%22">Biomarkers</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The feeding activity and subsequent assimilation of the products resulting from food digestion allow organisms to obtain energy for growth, maintenance and reproduction. Among these biological parameters, we studied digestive enzymes (amylase, cellulase and trypsin) in Gammarus fossarum to assess the impact of contaminants on their access to energy resources. However, to enable objective assessment of a toxic effect of decreased water quality on an organisms’ digestive capacity, it is necessary to establish reference values based on its natural variability as a function of changing biotic and abiotic factors. To limit the confounding influence of biotic factors, a caging approach with calibrated male organisms from the same population was used. This study applied an in situ deployment at 23 sites of the Rhone basin rivers, complemented by a laboratory experiment assessing the influence of two abiotic factors (temperature and conductivity). The results showed a small effect of conductivity on cellulase activity and a significant effect of temperature on digestive enzyme activity but only at the lowest temperature (7 °C). The experimental conditions allowed us to define an environmental reference value for digestive enzyme activities to select sites where the quality of the water impacted the digestive capacity of the organisms. In addition to the feeding rate, this study showed the relevance of digestive enzymes as biomarkers to be used as an early warning tool to reflect organisms’ health and the chemical quality of aquatic ecosystems. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=92555928 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11356-013-1921-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 9044 Subjects: – SubjectFull: Water quality Type: general – SubjectFull: Digestive enzymes Type: general – SubjectFull: Gammaridae Type: general – SubjectFull: Digestion Type: general – SubjectFull: Reproduction Type: general – SubjectFull: Power resources Type: general – SubjectFull: Temperature effect Type: general – SubjectFull: Biomarkers Type: general Titles: – TitleFull: Effect of water quality and confounding factors on digestive enzyme activities in Gammarus fossarum. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Charron, L. – PersonEntity: Name: NameFull: Geffard, O. – PersonEntity: Name: NameFull: Chaumot, A. – PersonEntity: Name: NameFull: Coulaud, R. – PersonEntity: Name: NameFull: Queau, H. – PersonEntity: Name: NameFull: Geffard, A. – PersonEntity: Name: NameFull: Dedourge-Geffard, O. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2013 Type: published Y: 2013 Identifiers: – Type: issn-print Value: 09441344 Numbering: – Type: volume Value: 20 – Type: issue Value: 12 Titles: – TitleFull: Environmental Science & Pollution Research Type: main |
| ResultId | 1 |
