Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA
Phthalates are endocrine-disrupting chemicals added to plastics, personal care products, cleaning solutions, and pesticides. Extensive use has led to its exposure to wildlife, including common bottlenose dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA; however, there...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Oceans |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-1924/3/3/17 |
| _version_ | 1797483962610745344 |
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| author | Miranda K. Dziobak Brian C. Balmer Randall S. Wells Emily C. Pisarski Ed F. Wirth Leslie B. Hart |
| author_facet | Miranda K. Dziobak Brian C. Balmer Randall S. Wells Emily C. Pisarski Ed F. Wirth Leslie B. Hart |
| author_sort | Miranda K. Dziobak |
| collection | DOAJ |
| description | Phthalates are endocrine-disrupting chemicals added to plastics, personal care products, cleaning solutions, and pesticides. Extensive use has led to its exposure to wildlife, including common bottlenose dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA; however, there are gaps in knowledge regarding whether sample timing or geographic location influence exposure. Dolphins were evaluated for temporal and spatial variability in urinary mono(2-ethylhexyl) phthalate (MEHP) detection (2010–2019). Significant fluctuations in detectable MEHP concentrations were found across the dataset. All samples from 2014 and 2015 (<i>n</i> = 12) had detectable MEHP concentrations; thus, data were classified into cohorts to explore the significance of prevalent MEHP detection (“Cohort 1” (<i>n</i> = 10; 2010–2013), “Cohort 2” (2014–2015), and “Cohort 3” (<i>n</i> = 29; 2016–2019)). Compared to Cohorts 1 and 3, Cohort 2 had higher detectable MEHP concentrations (Dunn’s; <i>p</i> = 0.0065 and <i>p</i> = 0.0012, respectively) and a greater proportion of detectable MEHP concentrations (pairwise comparisons using Benjamini–Hochberg adjustments: <i>p</i> = 0.0016 and <i>p</i> = 0.0059, respectively). MEHP detection also varied across spatial scales. Dolphins with detectable MEHP concentrations had ranges primarily within enclosed embayments, while dolphins with nondetectable MEHP concentrations extended into open waters, potentially indicating geographically linked exposure risk. This study suggests that researchers and management agencies should consider a population’s ranging pattern, geographic habitat characteristics, and sample timing when assessing small cetacean health in relation to contaminant exposure. |
| first_indexed | 2024-03-09T22:54:38Z |
| format | Article |
| id | doaj.art-db284a21833241bea4b1301cd7a53607 |
| institution | Directory Open Access Journal |
| issn | 2673-1924 |
| language | English |
| last_indexed | 2024-03-09T22:54:38Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Oceans |
| spelling | doaj.art-db284a21833241bea4b1301cd7a536072023-11-23T18:13:55ZengMDPI AGOceans2673-19242022-06-013323124910.3390/oceans3030017Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USAMiranda K. Dziobak0Brian C. Balmer1Randall S. Wells2Emily C. Pisarski3Ed F. Wirth4Leslie B. Hart5Environmental and Sustainability Studies Graduate Program, College of Charleston, Charleston, SC 29424, USADolphin Relief and Research, Clancy, MT 59634, USAChicago Zoological Society’s Sarasota Dolphin Research Program, c/o Mote Marine Laboratory, Sarasota, FL 34236, USANational Oceanic and Atmospheric Administration, National Ocean Service/National Centers for Coastal Ocean Science, Charleston, SC 29412, USANational Oceanic and Atmospheric Administration, National Ocean Service/National Centers for Coastal Ocean Science, Charleston, SC 29412, USADepartment of Health and Human Performance, College of Charleston, Charleston, SC 29424, USAPhthalates are endocrine-disrupting chemicals added to plastics, personal care products, cleaning solutions, and pesticides. Extensive use has led to its exposure to wildlife, including common bottlenose dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA; however, there are gaps in knowledge regarding whether sample timing or geographic location influence exposure. Dolphins were evaluated for temporal and spatial variability in urinary mono(2-ethylhexyl) phthalate (MEHP) detection (2010–2019). Significant fluctuations in detectable MEHP concentrations were found across the dataset. All samples from 2014 and 2015 (<i>n</i> = 12) had detectable MEHP concentrations; thus, data were classified into cohorts to explore the significance of prevalent MEHP detection (“Cohort 1” (<i>n</i> = 10; 2010–2013), “Cohort 2” (2014–2015), and “Cohort 3” (<i>n</i> = 29; 2016–2019)). Compared to Cohorts 1 and 3, Cohort 2 had higher detectable MEHP concentrations (Dunn’s; <i>p</i> = 0.0065 and <i>p</i> = 0.0012, respectively) and a greater proportion of detectable MEHP concentrations (pairwise comparisons using Benjamini–Hochberg adjustments: <i>p</i> = 0.0016 and <i>p</i> = 0.0059, respectively). MEHP detection also varied across spatial scales. Dolphins with detectable MEHP concentrations had ranges primarily within enclosed embayments, while dolphins with nondetectable MEHP concentrations extended into open waters, potentially indicating geographically linked exposure risk. This study suggests that researchers and management agencies should consider a population’s ranging pattern, geographic habitat characteristics, and sample timing when assessing small cetacean health in relation to contaminant exposure.https://www.mdpi.com/2673-1924/3/3/17phthalatesranging patternphoto-identificationbottlenose dolphin |
| spellingShingle | Miranda K. Dziobak Brian C. Balmer Randall S. Wells Emily C. Pisarski Ed F. Wirth Leslie B. Hart Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA Oceans phthalates ranging pattern photo-identification bottlenose dolphin |
| title | Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA |
| title_full | Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA |
| title_fullStr | Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA |
| title_full_unstemmed | Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA |
| title_short | Temporal and Spatial Evaluation of Mono(2-ethylhexyl) Phthalate (MEHP) Detection in Common Bottlenose Dolphins (<i>Tursiops truncatus</i>) from Sarasota Bay, Florida, USA |
| title_sort | temporal and spatial evaluation of mono 2 ethylhexyl phthalate mehp detection in common bottlenose dolphins i tursiops truncatus i from sarasota bay florida usa |
| topic | phthalates ranging pattern photo-identification bottlenose dolphin |
| url | https://www.mdpi.com/2673-1924/3/3/17 |
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