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dc.contributor.authorTubbs, Christopher W.
dc.date.accessioned2020-06-12T01:40:24Z
dc.date.available2020-06-12T01:40:24Z
dc.date.issued2016
dc.identifier.issnnull
dc.identifier.doi10.1080/23273747.2016.1173766
dc.identifier.urihttp://hdl.handle.net/20.500.12634/377
dc.description.abstractIn 1987, the last free-flying California condor (Gymnogyps californianus) was captured and brought into captivity, rendering the species extinct in the wild. At the time, only 27 condors remained. Today, the population numbers approximately 430 individuals and though condors continue their remarkable recovery, they still face numerous challenges. One challenge, specific to condors inhabiting coastal regions, is exposure to the endocrine disrupting chemical (EDC) p,p'-DDE, through the scavenging of marine mammal carcasses. The exposure levels these birds currently experience appears to be causing eggshell thinning, reminiscent of the phenomenon that nearly collapsed populations of several avian species decades ago. We were interested in further exploring the potential effects of EDCs on California condors. Investigating EDC effects on a critically endangered species like the condor can be difficult, with limited options for studies that can be feasibly conducted. Therefore, we conducted non-invasive, in vitro estrogen receptor (ESR) activation assays to characterize activation by EDCs that coastal condors encounter. Here, I give a brief history of EDCs effects on birds, and in particular the California condor. Additionally, our ESR data are summarized and mechanisms of eggshell thinning are reviewed, highlighting the potential implications of EDC exposure on the continued recovery of the California condor.
dc.language.isoen
dc.relation.urlhttp://dx.doi.org/10.1080/23273747.2016.1173766
dc.rights© 2016 The Author(s). Published with license by Taylor & Francis© Christopher W. Tubbs. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/
dc.subjectCALIFORNIA CONDORS
dc.subjectENDOCRINE SYSTEM
dc.subjectPOLLUTION
dc.subjectWILDLIFE CONSERVATION
dc.subjectEGGS
dc.titleCalifornia condors and DDT: Examining the effects of endocrine disrupting chemicals in a critically endangered species
dc.typeArticle
dc.source.journaltitleEndocrine Disruptors
dc.source.volume4
dc.source.issue1
dc.source.beginpagee1173766
refterms.dateFOA2020-06-17T02:07:49Z
html.description.abstractIn 1987, the last free-flying California condor (Gymnogyps californianus) was captured and brought into captivity, rendering the species extinct in the wild. At the time, only 27 condors remained. Today, the population numbers approximately 430 individuals and though condors continue their remarkable recovery, they still face numerous challenges. One challenge, specific to condors inhabiting coastal regions, is exposure to the endocrine disrupting chemical (EDC) p,p'-DDE, through the scavenging of marine mammal carcasses. The exposure levels these birds currently experience appears to be causing eggshell thinning, reminiscent of the phenomenon that nearly collapsed populations of several avian species decades ago. We were interested in further exploring the potential effects of EDCs on California condors. Investigating EDC effects on a critically endangered species like the condor can be difficult, with limited options for studies that can be feasibly conducted. Therefore, we conducted non-invasive, in vitro estrogen receptor (ESR) activation assays to characterize activation by EDCs that coastal condors encounter. Here, I give a brief history of EDCs effects on birds, and in particular the California condor. Additionally, our ESR data are summarized and mechanisms of eggshell thinning are reviewed, highlighting the potential implications of EDC exposure on the continued recovery of the California condor.


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© 2016 The Author(s). Published with license by Taylor & Francis© Christopher W. Tubbs. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.
Except where otherwise noted, this item's license is described as © 2016 The Author(s). Published with license by Taylor & Francis© Christopher W. Tubbs. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.