Influence of dimethoate on acetylcholinesterase activity and locomotor function in terrestrial isopods
Locomotor behavior in terrestrial organisms is crucial for burrowing, avoiding predators, food seeking, migration, and reproduction; therefore, it is a parameter with ecological relevance. Acetylcholinesterase (AChE) is a nervous system enzyme inhibited by several compounds and widely used as an exp...
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Veröffentlicht in: | Environmental toxicology and chemistry 2005-03, Vol.24 (3), p.603-609 |
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description | Locomotor behavior in terrestrial organisms is crucial for burrowing, avoiding predators, food seeking, migration, and reproduction; therefore, it is a parameter with ecological relevance. Acetylcholinesterase (AChE) is a nervous system enzyme inhibited by several compounds and widely used as an exposure biomarker in several organisms. Moreover, changes in energy reserves also may indicate an exposure to a stress situation. The aim of this study is to link biomarkers of different levels of biological organization in isopods exposed to increasing doses of dimethoate in semifield conditions. Locomotor parameters, AChE activity, and energy reserves (lipid, glycogen, and protein contents) were evaluated in the isopod Porcellio dilatatus after 48‐h and 10‐d exposure to dimethoate‐contaminated soil. Results showed a clear impairment of both locomotor and AChE activity during the entire study, although effects were more pronounced after 48 h. Most locomotor parameters and AChE activity showed a clear dose‐response relationship. By contrast, no clear trend was observed on energetic components. A positive and significant relationship was found between AChE activity and those locomotor parameters indicating activity, and the opposite was observed with those locomotor parameters indicating confusion and disorientation. The results obtained in this study enhance the importance of linking biochemical responses to parameters with ecological relevance at individual level, the value of locomotor behavior as an important marker to assess effects of toxicants, and also the usefulness and the acquisition of ecological relevance by AChE as a biomarker, by linking it with ecologically relevant behavioral parameters. |
doi_str_mv | 10.1897/04-131R.1 |
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V. M.</creator><creatorcontrib>Engenheiro, Elizabeth L. ; Hankard, Peter K. ; Sousa, Jose P. ; Lemos, Marco F. ; Weeks, Jason M. ; Soares, Amadeu M. V. M.</creatorcontrib><description>Locomotor behavior in terrestrial organisms is crucial for burrowing, avoiding predators, food seeking, migration, and reproduction; therefore, it is a parameter with ecological relevance. Acetylcholinesterase (AChE) is a nervous system enzyme inhibited by several compounds and widely used as an exposure biomarker in several organisms. Moreover, changes in energy reserves also may indicate an exposure to a stress situation. The aim of this study is to link biomarkers of different levels of biological organization in isopods exposed to increasing doses of dimethoate in semifield conditions. Locomotor parameters, AChE activity, and energy reserves (lipid, glycogen, and protein contents) were evaluated in the isopod Porcellio dilatatus after 48‐h and 10‐d exposure to dimethoate‐contaminated soil. Results showed a clear impairment of both locomotor and AChE activity during the entire study, although effects were more pronounced after 48 h. Most locomotor parameters and AChE activity showed a clear dose‐response relationship. By contrast, no clear trend was observed on energetic components. A positive and significant relationship was found between AChE activity and those locomotor parameters indicating activity, and the opposite was observed with those locomotor parameters indicating confusion and disorientation. The results obtained in this study enhance the importance of linking biochemical responses to parameters with ecological relevance at individual level, the value of locomotor behavior as an important marker to assess effects of toxicants, and also the usefulness and the acquisition of ecological relevance by AChE as a biomarker, by linking it with ecologically relevant behavioral parameters.</description><identifier>ISSN: 0730-7268</identifier><identifier>EISSN: 1552-8618</identifier><identifier>DOI: 10.1897/04-131R.1</identifier><identifier>PMID: 15779760</identifier><identifier>CODEN: ETOCDK</identifier><language>eng</language><publisher>Hoboken: Wiley Periodicals, Inc</publisher><subject>Acetylcholinesterase ; Acetylcholinesterase - metabolism ; Animal, plant and microbial ecology ; Animals ; Applied ecology ; Biochemistry ; Biological and medical sciences ; Biomarker ; Biomarkers ; Crustaceans ; Dimethoate ; Dimethoate - toxicity ; Ecotoxicology, biological effects of pollution ; Energy ; Energy reserves ; Fundamental and applied biological sciences. Psychology ; General aspects ; Glycogen - analysis ; Insecticides - toxicity ; Isopoda ; Isopoda - drug effects ; Isopoda - metabolism ; Isopoda - physiology ; Lipids - analysis ; Locomotor behavior ; Motor ability ; Motor Activity - drug effects ; Porcellio dilatatus ; Porcellionidae ; Predators ; Proteins - analysis ; Soil contamination ; Soil Pollutants - toxicity ; Stress analysis ; Survival Analysis ; Terrestrial ecosystems ; Toxicants</subject><ispartof>Environmental toxicology and chemistry, 2005-03, Vol.24 (3), p.603-609</ispartof><rights>Copyright © 2005 SETAC</rights><rights>2005 INIST-CNRS</rights><rights>Copyright Allen Press, Inc. 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V. M.</creatorcontrib><title>Influence of dimethoate on acetylcholinesterase activity and locomotor function in terrestrial isopods</title><title>Environmental toxicology and chemistry</title><addtitle>Environmental Toxicology and Chemistry</addtitle><description>Locomotor behavior in terrestrial organisms is crucial for burrowing, avoiding predators, food seeking, migration, and reproduction; therefore, it is a parameter with ecological relevance. Acetylcholinesterase (AChE) is a nervous system enzyme inhibited by several compounds and widely used as an exposure biomarker in several organisms. Moreover, changes in energy reserves also may indicate an exposure to a stress situation. The aim of this study is to link biomarkers of different levels of biological organization in isopods exposed to increasing doses of dimethoate in semifield conditions. Locomotor parameters, AChE activity, and energy reserves (lipid, glycogen, and protein contents) were evaluated in the isopod Porcellio dilatatus after 48‐h and 10‐d exposure to dimethoate‐contaminated soil. Results showed a clear impairment of both locomotor and AChE activity during the entire study, although effects were more pronounced after 48 h. Most locomotor parameters and AChE activity showed a clear dose‐response relationship. By contrast, no clear trend was observed on energetic components. A positive and significant relationship was found between AChE activity and those locomotor parameters indicating activity, and the opposite was observed with those locomotor parameters indicating confusion and disorientation. The results obtained in this study enhance the importance of linking biochemical responses to parameters with ecological relevance at individual level, the value of locomotor behavior as an important marker to assess effects of toxicants, and also the usefulness and the acquisition of ecological relevance by AChE as a biomarker, by linking it with ecologically relevant behavioral parameters.</description><subject>Acetylcholinesterase</subject><subject>Acetylcholinesterase - metabolism</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Applied ecology</subject><subject>Biochemistry</subject><subject>Biological and medical sciences</subject><subject>Biomarker</subject><subject>Biomarkers</subject><subject>Crustaceans</subject><subject>Dimethoate</subject><subject>Dimethoate - toxicity</subject><subject>Ecotoxicology, biological effects of pollution</subject><subject>Energy</subject><subject>Energy reserves</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Glycogen - analysis</subject><subject>Insecticides - toxicity</subject><subject>Isopoda</subject><subject>Isopoda - drug effects</subject><subject>Isopoda - metabolism</subject><subject>Isopoda - physiology</subject><subject>Lipids - analysis</subject><subject>Locomotor behavior</subject><subject>Motor ability</subject><subject>Motor Activity - drug effects</subject><subject>Porcellio dilatatus</subject><subject>Porcellionidae</subject><subject>Predators</subject><subject>Proteins - analysis</subject><subject>Soil contamination</subject><subject>Soil Pollutants - toxicity</subject><subject>Stress analysis</subject><subject>Survival Analysis</subject><subject>Terrestrial ecosystems</subject><subject>Toxicants</subject><issn>0730-7268</issn><issn>1552-8618</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqF0k9rFDEUAPAgil1XD34BGQQVD1Pz8j9HKVqLpRZRPIZMJkNTM5NtMqPutzfLLhYE7SUhye_lJXlB6CngY1BavsGsBQqfj-EeWgHnpFUC1H20wpLiVhKhjtCjUq4xBqG1foiOgEuppcArNJxNQ1z85HyThqYPo5-vkp3raGqs8_M2uqsUw-TL7LMtvk7O4UeYt42d-iYml8Y0p9wMy1QXalCYmipz9TnY2ISSNqkvj9GDwcbinxz6Nfr6_t2Xkw_t-afTs5O3563jTPGWup46wTXlnmPfaaZtp1XnhegwsxRAWat1bxkRQJySggxWge_BAbBBOrpGr_b7bnK6WeohzBiK8zHayaelGMkoJRqoqPLlfyUBBgpLcicEqRijRN0NmaQcS17h87_gdVryVN-lZsWUCU52aV_vkcuplOwHs8lhtHlrAJtd1Q1mZlf12qzRs8OGSzf6_lYeylzBiwOwxdk4ZDu5UG6d4Fwxwapje_czRL_9d0ZTERcEE4Yp7C7U7sNC_SW__oTZ_N0ISSU33y5OzQVcXrKPGAynvwEKVdJJ</recordid><startdate>200503</startdate><enddate>200503</enddate><creator>Engenheiro, Elizabeth L.</creator><creator>Hankard, Peter K.</creator><creator>Sousa, Jose P.</creator><creator>Lemos, Marco F.</creator><creator>Weeks, Jason M.</creator><creator>Soares, Amadeu M. 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V. M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5485-3cd3c65935e50eb949ab98be66b04a3118aa99da42612c8762fa81ed1c114f7c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Acetylcholinesterase</topic><topic>Acetylcholinesterase - metabolism</topic><topic>Animal, plant and microbial ecology</topic><topic>Animals</topic><topic>Applied ecology</topic><topic>Biochemistry</topic><topic>Biological and medical sciences</topic><topic>Biomarker</topic><topic>Biomarkers</topic><topic>Crustaceans</topic><topic>Dimethoate</topic><topic>Dimethoate - toxicity</topic><topic>Ecotoxicology, biological effects of pollution</topic><topic>Energy</topic><topic>Energy reserves</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>Glycogen - analysis</topic><topic>Insecticides - toxicity</topic><topic>Isopoda</topic><topic>Isopoda - drug effects</topic><topic>Isopoda - metabolism</topic><topic>Isopoda - physiology</topic><topic>Lipids - analysis</topic><topic>Locomotor behavior</topic><topic>Motor ability</topic><topic>Motor Activity - drug effects</topic><topic>Porcellio dilatatus</topic><topic>Porcellionidae</topic><topic>Predators</topic><topic>Proteins - analysis</topic><topic>Soil contamination</topic><topic>Soil Pollutants - toxicity</topic><topic>Stress analysis</topic><topic>Survival Analysis</topic><topic>Terrestrial ecosystems</topic><topic>Toxicants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Engenheiro, Elizabeth L.</creatorcontrib><creatorcontrib>Hankard, Peter K.</creatorcontrib><creatorcontrib>Sousa, Jose P.</creatorcontrib><creatorcontrib>Lemos, Marco F.</creatorcontrib><creatorcontrib>Weeks, Jason M.</creatorcontrib><creatorcontrib>Soares, Amadeu M. 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V. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of dimethoate on acetylcholinesterase activity and locomotor function in terrestrial isopods</atitle><jtitle>Environmental toxicology and chemistry</jtitle><addtitle>Environmental Toxicology and Chemistry</addtitle><date>2005-03</date><risdate>2005</risdate><volume>24</volume><issue>3</issue><spage>603</spage><epage>609</epage><pages>603-609</pages><issn>0730-7268</issn><eissn>1552-8618</eissn><coden>ETOCDK</coden><abstract>Locomotor behavior in terrestrial organisms is crucial for burrowing, avoiding predators, food seeking, migration, and reproduction; therefore, it is a parameter with ecological relevance. Acetylcholinesterase (AChE) is a nervous system enzyme inhibited by several compounds and widely used as an exposure biomarker in several organisms. Moreover, changes in energy reserves also may indicate an exposure to a stress situation. The aim of this study is to link biomarkers of different levels of biological organization in isopods exposed to increasing doses of dimethoate in semifield conditions. Locomotor parameters, AChE activity, and energy reserves (lipid, glycogen, and protein contents) were evaluated in the isopod Porcellio dilatatus after 48‐h and 10‐d exposure to dimethoate‐contaminated soil. Results showed a clear impairment of both locomotor and AChE activity during the entire study, although effects were more pronounced after 48 h. Most locomotor parameters and AChE activity showed a clear dose‐response relationship. By contrast, no clear trend was observed on energetic components. A positive and significant relationship was found between AChE activity and those locomotor parameters indicating activity, and the opposite was observed with those locomotor parameters indicating confusion and disorientation. The results obtained in this study enhance the importance of linking biochemical responses to parameters with ecological relevance at individual level, the value of locomotor behavior as an important marker to assess effects of toxicants, and also the usefulness and the acquisition of ecological relevance by AChE as a biomarker, by linking it with ecologically relevant behavioral parameters.</abstract><cop>Hoboken</cop><pub>Wiley Periodicals, Inc</pub><pmid>15779760</pmid><doi>10.1897/04-131R.1</doi><tpages>7</tpages></addata></record> |
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subjects | Acetylcholinesterase Acetylcholinesterase - metabolism Animal, plant and microbial ecology Animals Applied ecology Biochemistry Biological and medical sciences Biomarker Biomarkers Crustaceans Dimethoate Dimethoate - toxicity Ecotoxicology, biological effects of pollution Energy Energy reserves Fundamental and applied biological sciences. Psychology General aspects Glycogen - analysis Insecticides - toxicity Isopoda Isopoda - drug effects Isopoda - metabolism Isopoda - physiology Lipids - analysis Locomotor behavior Motor ability Motor Activity - drug effects Porcellio dilatatus Porcellionidae Predators Proteins - analysis Soil contamination Soil Pollutants - toxicity Stress analysis Survival Analysis Terrestrial ecosystems Toxicants |
title | Influence of dimethoate on acetylcholinesterase activity and locomotor function in terrestrial isopods |
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