Persistent Organic Contaminants and Steroid Hormones Levels in Morelet’s Crocodiles From the Southern Gulf of Mexico
Effects of endocrine disruptors on reproductive variables of top predators, such as alligators and crocodiles, have long been cited. Due to their long life span, these predators provide us with historic contaminant annals. In this study we tried to test whether lifestyle (free-ranging vs. farm anima...
Gespeichert in:
| Veröffentlicht in: | Archives of environmental contamination and toxicology 2012-04, Vol.62 (3), p.445-454 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 454 |
|---|---|
| container_issue | 3 |
| container_start_page | 445 |
| container_title | Archives of environmental contamination and toxicology |
| container_volume | 62 |
| creator | Gonzalez-Jauregui, Mauricio Valdespino, Carolina Salame-Méndez, Arturo Aguirre-León, Gustavo Rendón-vonOsten, Jaime |
| description | Effects of endocrine disruptors on reproductive variables of top predators, such as alligators and crocodiles, have long been cited. Due to their long life span, these predators provide us with historic contaminant annals. In this study we tried to test whether lifestyle (free-ranging vs. farm animals) and reproductive age of Morelet’s crocodiles in Campeche, Mexico, affect the bioaccumulation of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). Subsequently, we tested to see whether their concentration was related to steroid hormones (testosterone and estradiol-17β) levels once normal cyclic hormone variation and reproductive age had been taken into account. From the group of contaminants considered (analyzed as families), only frequency of hexachlorocyclohexanes (∑HCH) and ∑PCB permitted analyses. Whereas there was a greater concentration of ∑HCH bioaccumulated by free-ranging crocodiles, ∑PCB was found in equal quantities in free-ranging and farm animals. No difference was observed in relation to reproductive age for any of the contaminants. However, ∑PCB concentrations were related to testosterone levels among female crocodiles. This androgenic effect of ∑PCB has not been reported previously. Because testosterone promotes aggressive behavior in vertebrates, excessive aggression during the estrous season, or when female crocodiles should be caring for their young, could result in reproductive failure in Morelet’s crocodiles and potential long-term decline of the population. |
| doi_str_mv | 10.1007/s00244-011-9716-5 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_968184117</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>928908852</sourcerecordid><originalsourceid>FETCH-LOGICAL-c531t-e48cd664b0c82f6c76d0e3e872de2cdbbe43b4887d3b75064ea7be1a31a564723</originalsourceid><addsrcrecordid>eNqF0c9qFTEUBvBBLPZafQA3EgTRzWhO_s9SLrYVbqlQXQ-ZzJmaMpPUZKboztfw9XwSc723FgR1dRb5nS8JX1U9AfoKKNWvM6VMiJoC1I0GVct71QoEZzXVlN-vVpQ2tBZcwGH1MOcrSoEZIx5Uh4yVTW3kqrp5jyn7PGOYyXm6tME7so5htpMPNsyZ2NCTixlT9D05jWmKATPZ4A2OmfhAzmLCEecf375nsk7Rxd6PBRynOJH5E5KLuJSRAjlZxoHEgZzhF-_io-pgsGPGx_t5VH08fvthfVpvzk_erd9saic5zDUK43qlREedYYNyWvUUORrNemSu7zoUvBPG6J53WlIl0OoOwXKwUgnN-FH1Ypd7neLnBfPcTj47HEcbMC65bZQBIwD0_yUzDTVGbjNf_lOC0iClEaIp9Nkf9CouKZQfb_O4lvIXgh1yKeaccGivk59s-toCbbc9t7ue29Jzu-25lWXn6T546Sbsf2_cFlvA8z2w2dlxSDY4n--cAgHciOLYzuVyFC4x3b3w77f_BPxZwEQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>928375549</pqid></control><display><type>article</type><title>Persistent Organic Contaminants and Steroid Hormones Levels in Morelet’s Crocodiles From the Southern Gulf of Mexico</title><source>MEDLINE</source><source>SpringerLink Journals - AutoHoldings</source><creator>Gonzalez-Jauregui, Mauricio ; Valdespino, Carolina ; Salame-Méndez, Arturo ; Aguirre-León, Gustavo ; Rendón-vonOsten, Jaime</creator><creatorcontrib>Gonzalez-Jauregui, Mauricio ; Valdespino, Carolina ; Salame-Méndez, Arturo ; Aguirre-León, Gustavo ; Rendón-vonOsten, Jaime</creatorcontrib><description>Effects of endocrine disruptors on reproductive variables of top predators, such as alligators and crocodiles, have long been cited. Due to their long life span, these predators provide us with historic contaminant annals. In this study we tried to test whether lifestyle (free-ranging vs. farm animals) and reproductive age of Morelet’s crocodiles in Campeche, Mexico, affect the bioaccumulation of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). Subsequently, we tested to see whether their concentration was related to steroid hormones (testosterone and estradiol-17β) levels once normal cyclic hormone variation and reproductive age had been taken into account. From the group of contaminants considered (analyzed as families), only frequency of hexachlorocyclohexanes (∑HCH) and ∑PCB permitted analyses. Whereas there was a greater concentration of ∑HCH bioaccumulated by free-ranging crocodiles, ∑PCB was found in equal quantities in free-ranging and farm animals. No difference was observed in relation to reproductive age for any of the contaminants. However, ∑PCB concentrations were related to testosterone levels among female crocodiles. This androgenic effect of ∑PCB has not been reported previously. Because testosterone promotes aggressive behavior in vertebrates, excessive aggression during the estrous season, or when female crocodiles should be caring for their young, could result in reproductive failure in Morelet’s crocodiles and potential long-term decline of the population.</description><identifier>ISSN: 0090-4341</identifier><identifier>EISSN: 1432-0703</identifier><identifier>DOI: 10.1007/s00244-011-9716-5</identifier><identifier>PMID: 22002785</identifier><identifier>CODEN: AECTCV</identifier><language>eng</language><publisher>New York: Springer-Verlag</publisher><subject>Aggressive behavior ; Alligators ; Alligators and Crocodiles - metabolism ; Amphibia. Reptilia ; Animal, plant and microbial ecology ; Animals ; Applied ecology ; Aquatic animals ; Aquatic reptiles ; Bioaccumulation ; Biological and medical sciences ; Contaminants ; Crocodiles ; Earth and Environmental Science ; Ecotoxicology ; Ecotoxicology, biological effects of pollution ; Endocrine disruptors ; Endocrine Disruptors - metabolism ; Endocrine Disruptors - toxicity ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental impact ; Environmental Monitoring ; Farms ; Female ; Females ; Fundamental and applied biological sciences. Psychology ; General aspects ; Gonadal Steroid Hormones - metabolism ; Hexachlorocyclohexane ; Hormones ; Hydrocarbons, Chlorinated - metabolism ; Hydrocarbons, Chlorinated - toxicity ; Indicator organisms ; Male ; Mexico ; Monitoring/Environmental Analysis ; Organic compounds ; Organic contaminants ; Organochlorine pesticides ; Ovaries ; PCB ; Pesticides ; Pesticides - metabolism ; Pesticides - toxicity ; Plasma ; Pollution ; Polychlorinated biphenyls ; Polychlorinated Biphenyls - metabolism ; Polychlorinated Biphenyls - toxicity ; Population decline ; Predators ; Seasons ; Soil Science & Conservation ; Steroid hormones ; Steroids ; Studies ; Testosterone ; Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution ; Water Pollutants, Chemical - metabolism ; Water Pollutants, Chemical - toxicity ; Water pollution ; Water Pollution, Chemical - statistics & numerical data</subject><ispartof>Archives of environmental contamination and toxicology, 2012-04, Vol.62 (3), p.445-454</ispartof><rights>Springer Science+Business Media, LLC 2011</rights><rights>2015 INIST-CNRS</rights><rights>Springer Science+Business Media, LLC 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c531t-e48cd664b0c82f6c76d0e3e872de2cdbbe43b4887d3b75064ea7be1a31a564723</citedby><cites>FETCH-LOGICAL-c531t-e48cd664b0c82f6c76d0e3e872de2cdbbe43b4887d3b75064ea7be1a31a564723</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00244-011-9716-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00244-011-9716-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26141384$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22002785$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gonzalez-Jauregui, Mauricio</creatorcontrib><creatorcontrib>Valdespino, Carolina</creatorcontrib><creatorcontrib>Salame-Méndez, Arturo</creatorcontrib><creatorcontrib>Aguirre-León, Gustavo</creatorcontrib><creatorcontrib>Rendón-vonOsten, Jaime</creatorcontrib><title>Persistent Organic Contaminants and Steroid Hormones Levels in Morelet’s Crocodiles From the Southern Gulf of Mexico</title><title>Archives of environmental contamination and toxicology</title><addtitle>Arch Environ Contam Toxicol</addtitle><addtitle>Arch Environ Contam Toxicol</addtitle><description>Effects of endocrine disruptors on reproductive variables of top predators, such as alligators and crocodiles, have long been cited. Due to their long life span, these predators provide us with historic contaminant annals. In this study we tried to test whether lifestyle (free-ranging vs. farm animals) and reproductive age of Morelet’s crocodiles in Campeche, Mexico, affect the bioaccumulation of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). Subsequently, we tested to see whether their concentration was related to steroid hormones (testosterone and estradiol-17β) levels once normal cyclic hormone variation and reproductive age had been taken into account. From the group of contaminants considered (analyzed as families), only frequency of hexachlorocyclohexanes (∑HCH) and ∑PCB permitted analyses. Whereas there was a greater concentration of ∑HCH bioaccumulated by free-ranging crocodiles, ∑PCB was found in equal quantities in free-ranging and farm animals. No difference was observed in relation to reproductive age for any of the contaminants. However, ∑PCB concentrations were related to testosterone levels among female crocodiles. This androgenic effect of ∑PCB has not been reported previously. Because testosterone promotes aggressive behavior in vertebrates, excessive aggression during the estrous season, or when female crocodiles should be caring for their young, could result in reproductive failure in Morelet’s crocodiles and potential long-term decline of the population.</description><subject>Aggressive behavior</subject><subject>Alligators</subject><subject>Alligators and Crocodiles - metabolism</subject><subject>Amphibia. Reptilia</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Applied ecology</subject><subject>Aquatic animals</subject><subject>Aquatic reptiles</subject><subject>Bioaccumulation</subject><subject>Biological and medical sciences</subject><subject>Contaminants</subject><subject>Crocodiles</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Ecotoxicology, biological effects of pollution</subject><subject>Endocrine disruptors</subject><subject>Endocrine Disruptors - metabolism</subject><subject>Endocrine Disruptors - toxicity</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental Health</subject><subject>Environmental impact</subject><subject>Environmental Monitoring</subject><subject>Farms</subject><subject>Female</subject><subject>Females</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Gonadal Steroid Hormones - metabolism</subject><subject>Hexachlorocyclohexane</subject><subject>Hormones</subject><subject>Hydrocarbons, Chlorinated - metabolism</subject><subject>Hydrocarbons, Chlorinated - toxicity</subject><subject>Indicator organisms</subject><subject>Male</subject><subject>Mexico</subject><subject>Monitoring/Environmental Analysis</subject><subject>Organic compounds</subject><subject>Organic contaminants</subject><subject>Organochlorine pesticides</subject><subject>Ovaries</subject><subject>PCB</subject><subject>Pesticides</subject><subject>Pesticides - metabolism</subject><subject>Pesticides - toxicity</subject><subject>Plasma</subject><subject>Pollution</subject><subject>Polychlorinated biphenyls</subject><subject>Polychlorinated Biphenyls - metabolism</subject><subject>Polychlorinated Biphenyls - toxicity</subject><subject>Population decline</subject><subject>Predators</subject><subject>Seasons</subject><subject>Soil Science & Conservation</subject><subject>Steroid hormones</subject><subject>Steroids</subject><subject>Studies</subject><subject>Testosterone</subject><subject>Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution</subject><subject>Water Pollutants, Chemical - metabolism</subject><subject>Water Pollutants, Chemical - toxicity</subject><subject>Water pollution</subject><subject>Water Pollution, Chemical - statistics & numerical data</subject><issn>0090-4341</issn><issn>1432-0703</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqF0c9qFTEUBvBBLPZafQA3EgTRzWhO_s9SLrYVbqlQXQ-ZzJmaMpPUZKboztfw9XwSc723FgR1dRb5nS8JX1U9AfoKKNWvM6VMiJoC1I0GVct71QoEZzXVlN-vVpQ2tBZcwGH1MOcrSoEZIx5Uh4yVTW3kqrp5jyn7PGOYyXm6tME7so5htpMPNsyZ2NCTixlT9D05jWmKATPZ4A2OmfhAzmLCEecf375nsk7Rxd6PBRynOJH5E5KLuJSRAjlZxoHEgZzhF-_io-pgsGPGx_t5VH08fvthfVpvzk_erd9saic5zDUK43qlREedYYNyWvUUORrNemSu7zoUvBPG6J53WlIl0OoOwXKwUgnN-FH1Ypd7neLnBfPcTj47HEcbMC65bZQBIwD0_yUzDTVGbjNf_lOC0iClEaIp9Nkf9CouKZQfb_O4lvIXgh1yKeaccGivk59s-toCbbc9t7ue29Jzu-25lWXn6T546Sbsf2_cFlvA8z2w2dlxSDY4n--cAgHciOLYzuVyFC4x3b3w77f_BPxZwEQ</recordid><startdate>20120401</startdate><enddate>20120401</enddate><creator>Gonzalez-Jauregui, Mauricio</creator><creator>Valdespino, Carolina</creator><creator>Salame-Méndez, Arturo</creator><creator>Aguirre-León, Gustavo</creator><creator>Rendón-vonOsten, Jaime</creator><general>Springer-Verlag</general><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7T7</scope><scope>7TV</scope><scope>7U7</scope><scope>7WY</scope><scope>7WZ</scope><scope>7X7</scope><scope>7XB</scope><scope>87Z</scope><scope>88E</scope><scope>88I</scope><scope>8C1</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8FL</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BEZIV</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FRNLG</scope><scope>FYUFA</scope><scope>F~G</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K60</scope><scope>K6~</scope><scope>K9.</scope><scope>L.-</scope><scope>M0C</scope><scope>M0S</scope><scope>M1P</scope><scope>M2P</scope><scope>P64</scope><scope>PATMY</scope><scope>PQBIZ</scope><scope>PQBZA</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>7SU</scope><scope>KR7</scope><scope>7X8</scope></search><sort><creationdate>20120401</creationdate><title>Persistent Organic Contaminants and Steroid Hormones Levels in Morelet’s Crocodiles From the Southern Gulf of Mexico</title><author>Gonzalez-Jauregui, Mauricio ; Valdespino, Carolina ; Salame-Méndez, Arturo ; Aguirre-León, Gustavo ; Rendón-vonOsten, Jaime</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c531t-e48cd664b0c82f6c76d0e3e872de2cdbbe43b4887d3b75064ea7be1a31a564723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Aggressive behavior</topic><topic>Alligators</topic><topic>Alligators and Crocodiles - metabolism</topic><topic>Amphibia. Reptilia</topic><topic>Animal, plant and microbial ecology</topic><topic>Animals</topic><topic>Applied ecology</topic><topic>Aquatic animals</topic><topic>Aquatic reptiles</topic><topic>Bioaccumulation</topic><topic>Biological and medical sciences</topic><topic>Contaminants</topic><topic>Crocodiles</topic><topic>Earth and Environmental Science</topic><topic>Ecotoxicology</topic><topic>Ecotoxicology, biological effects of pollution</topic><topic>Endocrine disruptors</topic><topic>Endocrine Disruptors - metabolism</topic><topic>Endocrine Disruptors - toxicity</topic><topic>Environment</topic><topic>Environmental Chemistry</topic><topic>Environmental Health</topic><topic>Environmental impact</topic><topic>Environmental Monitoring</topic><topic>Farms</topic><topic>Female</topic><topic>Females</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>Gonadal Steroid Hormones - metabolism</topic><topic>Hexachlorocyclohexane</topic><topic>Hormones</topic><topic>Hydrocarbons, Chlorinated - metabolism</topic><topic>Hydrocarbons, Chlorinated - toxicity</topic><topic>Indicator organisms</topic><topic>Male</topic><topic>Mexico</topic><topic>Monitoring/Environmental Analysis</topic><topic>Organic compounds</topic><topic>Organic contaminants</topic><topic>Organochlorine pesticides</topic><topic>Ovaries</topic><topic>PCB</topic><topic>Pesticides</topic><topic>Pesticides - metabolism</topic><topic>Pesticides - toxicity</topic><topic>Plasma</topic><topic>Pollution</topic><topic>Polychlorinated biphenyls</topic><topic>Polychlorinated Biphenyls - metabolism</topic><topic>Polychlorinated Biphenyls - toxicity</topic><topic>Population decline</topic><topic>Predators</topic><topic>Seasons</topic><topic>Soil Science & Conservation</topic><topic>Steroid hormones</topic><topic>Steroids</topic><topic>Studies</topic><topic>Testosterone</topic><topic>Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution</topic><topic>Water Pollutants, Chemical - metabolism</topic><topic>Water Pollutants, Chemical - toxicity</topic><topic>Water pollution</topic><topic>Water Pollution, Chemical - statistics & numerical data</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gonzalez-Jauregui, Mauricio</creatorcontrib><creatorcontrib>Valdespino, Carolina</creatorcontrib><creatorcontrib>Salame-Méndez, Arturo</creatorcontrib><creatorcontrib>Aguirre-León, Gustavo</creatorcontrib><creatorcontrib>Rendón-vonOsten, Jaime</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Access via ABI/INFORM (ProQuest)</collection><collection>ABI/INFORM Global (PDF only)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>ABI/INFORM Global (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>Public Health Database</collection><collection>Technology Research Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ABI/INFORM Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Business Premium Collection</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Business Premium Collection (Alumni)</collection><collection>Health Research Premium Collection</collection><collection>ABI/INFORM Global (Corporate)</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Business Collection (Alumni Edition)</collection><collection>ProQuest Business Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ABI/INFORM Professional Advanced</collection><collection>ABI/INFORM Global</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>ProQuest One Business</collection><collection>ProQuest One Business (Alumni)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>Environmental Engineering Abstracts</collection><collection>Civil Engineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Archives of environmental contamination and toxicology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gonzalez-Jauregui, Mauricio</au><au>Valdespino, Carolina</au><au>Salame-Méndez, Arturo</au><au>Aguirre-León, Gustavo</au><au>Rendón-vonOsten, Jaime</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Persistent Organic Contaminants and Steroid Hormones Levels in Morelet’s Crocodiles From the Southern Gulf of Mexico</atitle><jtitle>Archives of environmental contamination and toxicology</jtitle><stitle>Arch Environ Contam Toxicol</stitle><addtitle>Arch Environ Contam Toxicol</addtitle><date>2012-04-01</date><risdate>2012</risdate><volume>62</volume><issue>3</issue><spage>445</spage><epage>454</epage><pages>445-454</pages><issn>0090-4341</issn><eissn>1432-0703</eissn><coden>AECTCV</coden><abstract>Effects of endocrine disruptors on reproductive variables of top predators, such as alligators and crocodiles, have long been cited. Due to their long life span, these predators provide us with historic contaminant annals. In this study we tried to test whether lifestyle (free-ranging vs. farm animals) and reproductive age of Morelet’s crocodiles in Campeche, Mexico, affect the bioaccumulation of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). Subsequently, we tested to see whether their concentration was related to steroid hormones (testosterone and estradiol-17β) levels once normal cyclic hormone variation and reproductive age had been taken into account. From the group of contaminants considered (analyzed as families), only frequency of hexachlorocyclohexanes (∑HCH) and ∑PCB permitted analyses. Whereas there was a greater concentration of ∑HCH bioaccumulated by free-ranging crocodiles, ∑PCB was found in equal quantities in free-ranging and farm animals. No difference was observed in relation to reproductive age for any of the contaminants. However, ∑PCB concentrations were related to testosterone levels among female crocodiles. This androgenic effect of ∑PCB has not been reported previously. Because testosterone promotes aggressive behavior in vertebrates, excessive aggression during the estrous season, or when female crocodiles should be caring for their young, could result in reproductive failure in Morelet’s crocodiles and potential long-term decline of the population.</abstract><cop>New York</cop><pub>Springer-Verlag</pub><pmid>22002785</pmid><doi>10.1007/s00244-011-9716-5</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0090-4341 |
| ispartof | Archives of environmental contamination and toxicology, 2012-04, Vol.62 (3), p.445-454 |
| issn | 0090-4341 1432-0703 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_968184117 |
| source | MEDLINE; SpringerLink Journals - AutoHoldings |
| subjects | Aggressive behavior Alligators Alligators and Crocodiles - metabolism Amphibia. Reptilia Animal, plant and microbial ecology Animals Applied ecology Aquatic animals Aquatic reptiles Bioaccumulation Biological and medical sciences Contaminants Crocodiles Earth and Environmental Science Ecotoxicology Ecotoxicology, biological effects of pollution Endocrine disruptors Endocrine Disruptors - metabolism Endocrine Disruptors - toxicity Environment Environmental Chemistry Environmental Health Environmental impact Environmental Monitoring Farms Female Females Fundamental and applied biological sciences. Psychology General aspects Gonadal Steroid Hormones - metabolism Hexachlorocyclohexane Hormones Hydrocarbons, Chlorinated - metabolism Hydrocarbons, Chlorinated - toxicity Indicator organisms Male Mexico Monitoring/Environmental Analysis Organic compounds Organic contaminants Organochlorine pesticides Ovaries PCB Pesticides Pesticides - metabolism Pesticides - toxicity Plasma Pollution Polychlorinated biphenyls Polychlorinated Biphenyls - metabolism Polychlorinated Biphenyls - toxicity Population decline Predators Seasons Soil Science & Conservation Steroid hormones Steroids Studies Testosterone Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution Water Pollutants, Chemical - metabolism Water Pollutants, Chemical - toxicity Water pollution Water Pollution, Chemical - statistics & numerical data |
| title | Persistent Organic Contaminants and Steroid Hormones Levels in Morelet’s Crocodiles From the Southern Gulf of Mexico |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-22T21%3A14%3A23IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Persistent%20Organic%20Contaminants%20and%20Steroid%20Hormones%20Levels%20in%20Morelet%E2%80%99s%20Crocodiles%20From%20the%20Southern%20Gulf%20of%20Mexico&rft.jtitle=Archives%20of%20environmental%20contamination%20and%20toxicology&rft.au=Gonzalez-Jauregui,%20Mauricio&rft.date=2012-04-01&rft.volume=62&rft.issue=3&rft.spage=445&rft.epage=454&rft.pages=445-454&rft.issn=0090-4341&rft.eissn=1432-0703&rft.coden=AECTCV&rft_id=info:doi/10.1007/s00244-011-9716-5&rft_dat=%3Cproquest_cross%3E928908852%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=928375549&rft_id=info:pmid/22002785&rfr_iscdi=true |