151
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Seguel M, George RC, Maboni G, Sanchez S, Page-Karjian A, Wirth E, McFee W, Gottdenker NL. Pathologic findings and causes of death in bottlenose dolphins Tursiops truncatus stranded along the Georgia coast, USA (2007-2013). DISEASES OF AQUATIC ORGANISMS 2020; 141:25-38. [PMID: 32940248 DOI: 10.3354/dao03509] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Between 2007 and 2013, before the 2013 cetacean morbillivirus outbreak, 26 fresh bottlenose dolphin carcasses were necropsied on the coast of Georgia, USA. Here, we present the pathological and microbiological findings associated with their most likely causes of death. The primary cause of death was determined in 25 individuals and included systemic bacterial infection (n = 7), verminous and bacterial bronchopneumonia (n = 5), drowning/entanglement (n = 5), disseminated histoplasmosis (n = 1), intestinal intussusception (n = 1), vegetative endocarditis (n = 1), meningitis (n = 1), necrotizing dermatitis (n = 1), disseminated angiomatosis (n = 1), emaciation (n = 1) and stingray spine trauma (n = 1). Histiocytic and eosinophilic bronchopneumonia associated with Halocerchus sp. infection was observed in 69% of the animals (18/26) and eosinophilic gastritis due to Anisakidae nematodes was found in 36% of the examined stomachs (8/22). Moderate to severe eosinophilic pancreatitis with fibrosis was observed in 4 animals infected with Brachycladiidae trematodes. Proliferative and ulcerative lymphoplasmacytic dermatitis was found in 5 animals and was considered to contribute to deteriorated health status in 2 calves. Pulmonary and lymph node angiomatosis were observed in 15 and 10 animals, respectively. In at least 2 animals, the concentration of polychlorinated biphenyls (PCBs) in the blubber exceeded 1500 µg g-1 of lipid. Bottlenose dolphins stranded on the Georgia coast have a wide range of inflammatory lesions associated with a variety of helminth, bacterial, and fungal pathogens. Some resident animals have also been exposed to high levels of PCB contamination, which could reduce host immunocompetence. Higher exposure to these or other pathogens could result in further decline in the health of resident and migrant dolphin populations in this region.
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Affiliation(s)
- M Seguel
- Department of Pathology, College of Veterinary Medicine, The University of Georgia, Athens, GA 30602, USA
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152
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POSTMORTEM COMPUTED TOMOGRAPHY AND MAGNETIC RESONANCE IMAGING FINDINGS IN A CASE OF COINFECTION OF DOLPHIN MORBILLIVIRUS AND ASPERGILLUS FUMIGATUS IN A JUVENILE BOTTLENOSE DOLPHIN ( TURSIOPS TRUNCATUS). J Zoo Wildl Med 2020; 51:448-454. [PMID: 32549578 DOI: 10.1638/2019-0087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/02/2020] [Indexed: 11/21/2022] Open
Abstract
A freshly dead juvenile bottlenose dolphin (Tursiops truncatus), recovered from the waters near Sand Key, Clearwater, FL, was imaged postmortem using computed tomography and magnetic resonance imaging prior to conventional necropsy. The pattern of imaging findings in the brain was compatible with severe multifocal meningoencephalitis with intralesional necrosis and/or hemorrhage, and the pattern of imaging findings in the lungs was compatible with severe multifocal bronchopneumonia. The subsequent investigation included necropsy, histology, culture, and molecular diagnostics and demonstrated disseminated coinfection of dolphin morbillivirus and Aspergillus fumigatus. This is the first report documenting the cross-sectional imaging findings of this important cetacean comorbidity and demonstrates advances in modern, cooperative investigations of marine mammal mortality events.
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153
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Chen MH, Lin YT, Lai CC, Chou LS, Chen CY. Tissue concentrations of Fe, Zn, Cu and Mn of four Taiwanese toothed cetaceans. MARINE POLLUTION BULLETIN 2020; 158:111094. [PMID: 32753165 DOI: 10.1016/j.marpolbul.2020.111094] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 03/18/2020] [Accepted: 03/18/2020] [Indexed: 06/11/2023]
Abstract
Concentrations of Fe, Mn, Zn, and Cu in the muscle, lung, liver, and kidney tissues of 49 cetaceans, including 11 Kogia sima (Ks), 10 Lagenodelphis hosei (Lh), 14 Grampus griseus (Gg), and 14 Stenella attenuata (Sa) from 1994 to 2012 in Taiwan were measured. Ks exhibited the highest Fe, and the lowest Zn, Cu and Mn tissue concentrations. The Kogiid and Delphinid groups were significantly categorized by nMDS analysis. Fe muscle concentrations were found to be positively correlated with Ks, Lh, and Gg but not Sa body length. The different levels of Zn-, Cu-, and Mn- tissue concentrations of the two families were due to their different SOD systems. Their calves contained higher Cu liver concentrations. The four essential elements in cetaceans regulate homeostasis to meet their eco-physiological demand. The baseline levels for these four elements in these four tissues in the Delphinid group are defined.
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Affiliation(s)
- Meng-Hsien Chen
- Department of Oceanography (Marine Biology group), National Sun Yat-sen University, 804 Kaohsiung, Taiwan; Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, 807 Kaohsiung, Taiwan.
| | - Yu-Ting Lin
- Department of Oceanography (Marine Biology group), National Sun Yat-sen University, 804 Kaohsiung, Taiwan
| | - Chien-Cheng Lai
- Department of Oceanography (Marine Biology group), National Sun Yat-sen University, 804 Kaohsiung, Taiwan
| | - Lien-Siang Chou
- Institute of Ecology and Evolutionary Biology, National Taiwan University, 106 Taipei, Taiwan
| | - Chiee-Young Chen
- Department of Marine Environmental Engineering, National Kaohsiung University, 811 Kaohsiung, Taiwan
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154
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Capanni F, Muñoz-Arnanz J, Marsili L, Fossi MC, Jiménez B. Assessment of PCDD/Fs, dioxin-like PCBs and PBDEs in Mediterranean striped dolphins. MARINE POLLUTION BULLETIN 2020; 156:111207. [PMID: 32510364 DOI: 10.1016/j.marpolbul.2020.111207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Bio-accumulation of high levels of persistent organic pollutants represent a serious conservation concern for Mediterranean marine odontocetes. In this study, blubber samples from 10 striped dolphins (Stenella coeruleoalba) stranded along the Italian coasts during 2015-2016 were analyzed. All specimens showed dl-PCBs > PBDEs ≫ PCDD/Fs. Median concentrations were 1820 ng/g l.w., 456 ng/g l.w. and 23.9 pg/g l.w., respectively. dl-PCBs accounted for 93.3% of total TEQs. PBDE concentrations suggest that the Mediterranean basin may be considered a hotspot for organobromine compounds. OCDD did not represent the greatest contributor to PCDD/Fs profile, most likely due to a change in dioxin environmental sources in the last two-three decades. Despite international regulations, the present study emphasized that POP exposure levels in Mediterranean striped dolphins have not declined significantly in recent years. Toxicological and risk assessment studies on this sentinel species may provide an early indication of potential adverse health effects on Mediterranean ecosystems.
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Affiliation(s)
- Francesca Capanni
- Dept. Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain; Dept. Physical Sciences, Earth and Environment, University of Siena, via P. A. Mattioli 4, 53100 Siena, Italy.
| | - Juan Muñoz-Arnanz
- Dept. Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Letizia Marsili
- Dept. Physical Sciences, Earth and Environment, University of Siena, via P. A. Mattioli 4, 53100 Siena, Italy
| | - M Cristina Fossi
- Dept. Physical Sciences, Earth and Environment, University of Siena, via P. A. Mattioli 4, 53100 Siena, Italy
| | - Begoña Jiménez
- Dept. Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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155
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Per- and Polyfluoroalkyl Substances (PFAS) Neurotoxicity in Sentinel and Non-Traditional Laboratory Model Systems: Potential Utility in Predicting Adverse Outcomes in Human Health. TOXICS 2020; 8:toxics8020042. [PMID: 32549216 PMCID: PMC7355795 DOI: 10.3390/toxics8020042] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/04/2020] [Accepted: 06/11/2020] [Indexed: 02/06/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a class of chemicals that were widely used in manufacturing and are now present in the environment throughout the world. It is known that various PFAS are quantifiable in human in blood, but potential adverse health outcomes remain unclear. Sentinel and non-traditional model species are useful to study potential toxicity of PFAS in order to understand the relationship between environmental and human health. Here, we present a critical review of studies on the neurotoxicity of PFAS in sentinel and non-traditional laboratory model systems, including Caenorhabditis elegans (nematode), Dugesia japonica (planarian), Rana pipiens (frogs), Danio rerio and Oryzias melastigma (fish), and Ursus maritimus (polar bears). PFAS have been implicated in developmental neurotoxicity in non-traditional and traditional model systems as well as sentinel species, including effects on neurotransmitter levels, especially acetylcholine and its metabolism. However, further research on the mechanisms of toxicity needs to be conducted to determine if these chemicals are affecting organisms in a similar manner. Overall, findings tend to be similar among the various species, but bioaccumulation may vary, which needs to be taken into account in future studies by quantifying target organ concentrations of PFAS to better compare different species. Furthermore, data on the majority of PFAS is lacking in neurotoxicity testing, and additional studies are needed to corroborate findings thus far.
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156
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50 Years of Cetacean Strandings Reveal a Concerning Rise in Chilean Patagonia. Sci Rep 2020; 10:9511. [PMID: 32528030 PMCID: PMC7290033 DOI: 10.1038/s41598-020-66484-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/21/2020] [Indexed: 11/28/2022] Open
Abstract
Cetacean strandings (CS) have been reported in increasing numbers in coastal areas worldwide. Although the causes of these strandings are unknown, a number of anthropogenic and environmental factors have been suggested. This paper aims to characterize CS patterns and describe their fine-scale spatiotemporal dynamics. We analysed spatial and spatiotemporal CS patterns in Chile from January 1968 to January 2020. We identified a total of 389 CS events affecting eight cetacean families, 21 genera, and 35 species, which represent more than 85% of the reported species richness for the country. Most CS events (94.1%) were single (i.e., ≤two individuals). There were also 18 mass stranding (three to 24 individuals, 4.1%) and nine unusually large mass stranding events (>25 individuals, 2%). Purely spatial tests showed CS events appearing in random occurrence along the Chilean coast. Local tests for spatio-temporal clusters, however, identified a greater number of hotspots reported in the southernmost part of the country, namely, Chilean Patagonia. Specifically, significant spatio-temporal clusters were identified and defined as containing three or more individuals within a two-month period as a focal coastal event (<1 km radius). It is a cause of concern that CS events in Chile have been increasing consistently over the last decades, and although we were not able to identify their causes, we are able to highlight the importance of changes in climate conditions and of an increase in monitoring activities as primary drivers for such patterns, particularly important in Chilean Patagonia.
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157
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Robles-Malagamba MJ, Walsh MT, Ahasan MS, Thompson P, Wells RS, Jobin C, Fodor AA, Winglee K, Waltzek TB. Characterization of the bacterial microbiome among free-ranging bottlenose dolphins ( Tursiops truncatus). Heliyon 2020; 6:e03944. [PMID: 32577542 PMCID: PMC7305398 DOI: 10.1016/j.heliyon.2020.e03944] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/07/2020] [Accepted: 05/05/2020] [Indexed: 12/11/2022] Open
Abstract
Marine animals represent a dynamic and complex habitat for diverse microbial communities. The microbiota associated with bottlenose dolphins (Tursiops truncatus) are believed to influence their health status, but it remains poorly understood. We therefore characterized and compared the bacterial microbiome of bottlenose dolphins from six different anatomical sites that represent four different body systems (respiratory, digestive, reproductive, and integumentary). In this study, a total of 14 free-ranging bottlenose dolphins were sampled during the 2015 Sarasota Bay Dolphin Health Assessment. Bacterial diversity and abundance were assessed by PCR amplification of the hypervariable V3-V4 regions of the bacterial 16S rRNA gene for each sample, followed by sequencing on an Illumina MiSeq platform. Analysis showed that bottlenose dolphins harbor diverse bacterial communities with a unique microbial community at each body system. Additionally, the bottlenose dolphin bacterial microbiome was clearly distinct to the aquatic microbiome from their surrounding habitat. These results are in close agreement with other cetacean microbiome studies, while our study is the first to explore what was found to be a diverse bottlenose dolphin genital microbiome. The core bacterial communities identified in this study in apparently healthy animals might be informative for future health monitoring of bottlenose dolphins.
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Affiliation(s)
- María José Robles-Malagamba
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - Michael T. Walsh
- Department of Comparative, Diagnostic and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - Mohammad Shamim Ahasan
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
- Department of Medicine, Surgery and Obstetrics, Faculty of Veterinary and Animal Sciences, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh
| | - Patrick Thompson
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - Randall S. Wells
- Chicago Zoological Society's Sarasota Dolphin Research Program, Mote Marine Laboratory, Sarasota, Florida, USA
| | - Christian Jobin
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
- Division of Gastroenterology, Hepatology, and Nutrition, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Anthony A. Fodor
- Department of Bioinformatics and Genomics, University of North Carolina, Charlotte, North Carolina, USA
| | - Kathryn Winglee
- Department of Bioinformatics and Genomics, University of North Carolina, Charlotte, North Carolina, USA
| | - Thomas B. Waltzek
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
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158
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Apprill A, Miller CA, Van Cise AM, U'Ren JM, Leslie MS, Weber L, Baird RW, Robbins J, Landry S, Bogomolni A, Waring G. Marine mammal skin microbiotas are influenced by host phylogeny. ROYAL SOCIETY OPEN SCIENCE 2020; 7:192046. [PMID: 32537203 PMCID: PMC7277249 DOI: 10.1098/rsos.192046] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
Skin-associated microorganisms have been shown to play a role in immune function and disease of humans, but are understudied in marine mammals, a diverse animal group that serve as sentinels of ocean health. We examined the microbiota associated with 75 epidermal samples opportunistically collected from nine species within four marine mammal families, including: Balaenopteridae (sei and fin whales), Phocidae (harbour seal), Physeteridae (sperm whales) and Delphinidae (bottlenose dolphins, pantropical spotted dolphins, rough-toothed dolphins, short-finned pilot whales and melon-headed whales). The skin was sampled from free-ranging animals in Hawai'i (Pacific Ocean) and off the east coast of the United States (Atlantic Ocean), and the composition of the bacterial community was examined using the sequencing of partial small subunit (SSU) ribosomal RNA genes. Skin microbiotas were significantly different among host species and taxonomic families, and microbial community distance was positively correlated with mitochondrial-based host genetic divergence. The oceanic location could play a role in skin microbiota variation, but skin from species sampled in both locations is necessary to determine this influence. These data suggest that a phylosymbiotic relationship may exist between microbiota and their marine mammal hosts, potentially providing specific health and immune-related functions that contribute to the success of these animals in diverse ocean ecosystems.
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Affiliation(s)
- Amy Apprill
- Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
| | - Carolyn A. Miller
- Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
| | - Amy M. Van Cise
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
| | - Jana M. U'Ren
- BIO5 Institute and Department of Biosystems Engineering, University of Arizona, Tucson, AZ, USA
| | | | - Laura Weber
- Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
| | | | | | - Scott Landry
- Center for Coastal Studies, Provincetown, MA, USA
| | - Andrea Bogomolni
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
| | - Gordon Waring
- NOAA Northeast Fisheries Science Center, Protected Species Branch, Woods Hole, MA, USA
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159
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López-Berenguer G, Peñalver J, Martínez-López E. A critical review about neurotoxic effects in marine mammals of mercury and other trace elements. CHEMOSPHERE 2020; 246:125688. [PMID: 31896013 DOI: 10.1016/j.chemosphere.2019.125688] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/16/2019] [Accepted: 12/16/2019] [Indexed: 05/26/2023]
Abstract
Marine mammals are more exposed to mercury (Hg) than any others animals in the world. As many trace elements, Hg it is able to impair the brain function, which could be a cause of population decline. Nevertheless, these issues have been scarcely studied because of the technical and ethical difficulties. We conducted a systematic review about marine mammals' brain exposition to Hg and other trace elements, and their neurotoxic effects. Information was scarce and the lack of standardization of nomenclature of brain structures, sample collecting and results presentation made it difficult to obtain conclusions. Hg was the most studied metal and toothed whales the most studied group. Despite being its target organ, brain accumulates lesser concentrations of Hg than other tissues as liver. We found a significant positive correlation between both organs' burden (rho = 0.956 for cetaceans; rho = 0.756 for pinnipeds). Reported Hg values in brain of cetaceans (median 3.00 ppm ww) surpassed by one or two orders of magnitude those values found in other species as pinnipeds (median 0.33 ppm ww) or polar bears (median 0.07 ppm ww). Such values exceeded neurotoxicity thresholds. Although marine mammals ingest mostly the organic and more toxic form MeHg, different fractions of inorganic mercury can appear in brain, which could suggest some detoxification mechanisms. Other suggested mechanisms include Se-Hg interaction and liver sequestration. Although other elements are subjected to a rigid homeostatic control, appear in low concentrations or do not exert an important neurotoxic effect, they should be more studied to elucidate their neurotoxicity potential.
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Affiliation(s)
- G López-Berenguer
- Area of Toxicology, Department of Health Sciences, Faculty of Veterinary Medicine, University of Murcia, 30100, Murcia, Spain
| | - J Peñalver
- Area of Toxicology, Department of Health Sciences, Faculty of Veterinary Medicine, University of Murcia, 30100, Murcia, Spain; Fisheries and Aquaculture Service (CARM), 30100, Murcia, Spain
| | - E Martínez-López
- Area of Toxicology, Department of Health Sciences, Faculty of Veterinary Medicine, University of Murcia, 30100, Murcia, Spain; Toxicology and Risk Assessment Group, Biomedical Research Institute of Murcia (IMIB-Arrixaca), University of Murcia, 30100, Murcia, Spain.
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160
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McCormack MA, Jackson BP, Dutton J. Effects of Formalin Fixation on Trace Element Concentrations in Bottlenose Dolphin (Tursiops truncatus) Tissues. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:1149-1164. [PMID: 32164038 DOI: 10.1002/etc.4709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/27/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
Odontocetes are considered ideal sentinel species to monitor environmental trace element concentrations. Although frozen tissues are preferable for trace element analysis, formalin-fixed tissues are often the only samples available; however, it is uncertain whether formalin fixation alters tissue trace element concentrations. To explore whether formalin-fixed tissues could be utilized for toxicology studies, concentrations of 14 trace elements (arsenic [As], cadmium, cobalt, chromium, copper, iron, mercury, manganese, nickel, lead, selenium, tin, vanadium, and zinc [Zn]) were measured in frozen and formalin-fixed bottlenose dolphin (Tursiops truncatus) tissues following short-term (6 wk; tissues: blubber, liver, and lung) and long-term preservation (3-7 yr; tissues: blubber, brain, kidney, liver, lung, and skin) using inductively coupled plasma mass spectrometry. Following both short-term and long-term preservation, there were significant differences in tissue trace element concentrations between preservation methods. Some trace elements were found in greater concentrations in frozen tissues compared with formalin-fixed tissues, suggesting leaching (e.g., mean As concentrations were between 1.4 and 7.6 times greater in frozen tissues). In contrast, other trace elements were found in greater concentrations in formalin-fixed tissues compared with frozen tissues, suggesting contamination (e.g., mean Zn concentrations were up to 8.7 times higher in some formalin-fixed tissues). Our results suggest that it may be possible to account for the effects of formalin fixation for some trace elements, but leaching and contamination should be carefully considered. Environ Toxicol Chem 2020;39:1149-1164. © 2020 SETAC.
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Affiliation(s)
- Meaghan A McCormack
- Department of Biology, Texas State University, Aquatic Station, San Marcos, Texas, USA
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire, USA
| | - Jessica Dutton
- Department of Biology, Texas State University, Aquatic Station, San Marcos, Texas, USA
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161
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Sham RCT, Tao LSR, Mak YKY, Yau JKC, Wai TC, Ho KKY, Zhou GJ, Li Y, Wang X, Leung KMY. Occurrence and trophic magnification profile of triphenyltin compounds in marine mammals and their corresponding food webs. ENVIRONMENT INTERNATIONAL 2020; 137:105567. [PMID: 32087482 DOI: 10.1016/j.envint.2020.105567] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 01/31/2020] [Accepted: 02/09/2020] [Indexed: 06/10/2023]
Abstract
The occurrence of triphenyltin (TPT) compounds, a highly toxic antifouling biocide, has been documented in marine environments and organisms all over the world. While some studies showed that marine mammals can be used as sentinel organisms to evaluate the pollution status of emerging contaminants in the environment because of their long lifespans and high trophic levels, information regarding the contamination status of TPT in marine mammal species has been limited over the past decade. More importantly, the primary bioaccumulation pathway of TPT in these long-lived apex predators and the corresponding marine food web is still uncertain. Therefore, this study aimed to evaluate the contamination statuses of TPT in two marine mammal species, namely the finless porpoise and the Indo-Pacific humpback dolphin, and assess the trophic magnification potential of TPT along the food webs of these two species, using stable isotope analysis, and chemical analysis with gas chromatography-mass spectrometry. The results showed that TPT is the predominant residue in majority of the analyzed individuals of two marine mammals, with concentrations ranging from 426.2 to 3476.6 ng/g wet weight in their muscle tissues. Our results also demonstrated an exponential increase in the concentration of TPT along the marine food web, indicating that trophic magnification occurs in the respective food webs of the two marine mammals. The range of trophic magnification factors of TPT in the food webs of finless porpoise and Indo-Pacific humpback dolphin was 2.51-3.47 and 2.45-3.39, respectively. These results suggest that high trophic organisms may be more vulnerable to the exposure of TPT-contaminated environments due to the high trophic magnification potential, and thus ecological risk of these compounds ought to be assessed with the consideration of their bioaccumulation potentials in these marine mammals.
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Affiliation(s)
- Ronia Chung-Tin Sham
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Lily Shi Ru Tao
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Yanny King Yan Mak
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Jason Kin Chung Yau
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Tak Cheung Wai
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong Special Administrative Region
| | - Kevin King Yan Ho
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Guang-Jie Zhou
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Yongyu Li
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Xinhong Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Kenneth Mei Yee Leung
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region; State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong Special Administrative Region.
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162
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Monteiro F, Lemos LS, de Moura JF, Rocha RCC, Moreira I, Di Beneditto APM, Kehrig HA, Bordon IC, Siciliano S, Saint'Pierre TD, Hauser-Davis RA. Total and subcellular Ti distribution and detoxification processes in Pontoporia blainvillei and Steno bredanensis dolphins from Southeastern Brazil. MARINE POLLUTION BULLETIN 2020; 153:110975. [PMID: 32275533 DOI: 10.1016/j.marpolbul.2020.110975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 01/29/2020] [Accepted: 02/10/2020] [Indexed: 06/11/2023]
Abstract
Titanium (Ti), used in many dailyuse products, such as shampoos and sunscreen filters, in the form of TiO2 nanoparticles (NPs), may elicit adverse marine biota effects. Marine mammal Ti data is scarce, and subcellular distribution and detoxification information is non-existent. Ti concentrations and metalloprotein detoxification in Pontoporia blainvillei and Steno bredanensis dolphins from Southeastern Brazil were assessed. Metallothionein (MT) concentrations were determined spectrophotometrically, total and subcellular Ti, by ICP-MS and detoxification, by HPLC-ICP-MS. Ti detoxification occurred through MT complexation. Statistical Ti-MT associations were observed in S. bredanensis liver, indicating TiO2 NPs contamination, as Ti binds to MT only as NPs. MT-Ti correlations were observed for both the coastal (P. blainvillei) and offshore (S. bredanensis) dolphins, evidencing oceanic TiO2 diffusion. Ti detoxification through binding to reduced glutathione occurred in both species. Thermostable subcellular fractions are a valuable tool for cetacean Ti detoxification assessments and should be applied to conservation efforts.
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Affiliation(s)
- Fernanda Monteiro
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225, Gávea, 22453-900 Rio de Janeiro, RJ, Brazil
| | - Leila S Lemos
- Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos (GEMM-Lagos), Rua São José 1.260, Praia Seca, Araruama, RJ 28970-000, Brazil; Marine Mammal Institute, Hatfield Marine Science Center, Oregon State University, 2030 SE Marine Science Dr, Newport, OR 97365, USA
| | - Jailson Fulgêncio de Moura
- Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos (GEMM-Lagos), Rua São José 1.260, Praia Seca, Araruama, RJ 28970-000, Brazil; Leibniz Center for Tropical Marine Ecology - ZMT, Systems Ecology Group, Fahrenheitstraße 6, 28359 Bremen, Germany
| | - Rafael Christian Chávez Rocha
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225, Gávea, 22453-900 Rio de Janeiro, RJ, Brazil
| | - Isabel Moreira
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225, Gávea, 22453-900 Rio de Janeiro, RJ, Brazil
| | - Ana Paula M Di Beneditto
- Universidade Estadual do Norte Fluminense, Laboratório de Ciências Ambientais, 28013-602 Campos dos Goytacazes, RJ, Brazil
| | - Helena A Kehrig
- Universidade Estadual do Norte Fluminense, Laboratório de Ciências Ambientais, 28013-602 Campos dos Goytacazes, RJ, Brazil
| | - Isabella C Bordon
- UNESP - Universidade Estadual Paulista, Campus do Litoral Paulista, Núcleo de Estudos em Poluição e Ecotoxicologia Aquática (NEPEA), Praça Infante Dom Henrique s/n°, Parque Bitaru, 11330-900 São Vicente, SP, Brazil
| | - Salvatore Siciliano
- Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos (GEMM-Lagos), Rua São José 1.260, Praia Seca, Araruama, RJ 28970-000, Brazil; Laboratório de Biodiversidade, Instituto Oswaldo Cruz, Fiocruz, Pavilhão Mourisco sala 217, Av. Brasil, 4.365, Manguinhos, Rio de Janeiro, RJ 21040-900, Brazil
| | - Tatiana D Saint'Pierre
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225, Gávea, 22453-900 Rio de Janeiro, RJ, Brazil.
| | - Rachel Ann Hauser-Davis
- Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos (GEMM-Lagos), Rua São José 1.260, Praia Seca, Araruama, RJ 28970-000, Brazil; Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, 4.365, Manguinhos, Rio de Janeiro, 21040-360, Brazil.
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163
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Imlau M, Conejeros I, Muñoz-Caro T, Zhou E, Gärtner U, Ternes K, Taubert A, Hermosilla C. Dolphin-derived NETosis results in rapid Toxoplasma gondii tachyzoite ensnarement and different phenotypes of NETs. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 103:103527. [PMID: 31655127 DOI: 10.1016/j.dci.2019.103527] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 10/20/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
Toxoplasma gondii is a cosmopolitan zoonotic parasite and nowadays considered as an emerging neozoan pathogen in the marine environment. Cetacean innate immune reactions against T. gondii stages have not yet been investigated. Thus, T. gondii tachyzoites were utilized to trigger neutrophil extracellular traps (NETs) in bottlenose dolphin (Tursiops truncatus) polymorphonuclear neutrophils (PMN). Scanning electron microscopy unveiled T. gondii tachyzoites as potent and rapid inducers of cetacean-derived NETosis. Co-localization of extracellular chromatin with global histones, granulocytic myeloperoxidase and neutrophil elastase confirmed classical characteristics of NETosis. Interestingly, different phenotypes of NETs were induced by tachyzoites resulting in spread, diffuse and aggregated NET formation and moreover, 'anchored' and 'cell free' NETosis was also detected. Current data indicate that cetacean-derived NETosis might represent an early, ancient and well-conserved host innate defense mechanism that not only acts against T. gondii but might also occur in response to other closely related emerging apicomplexan parasites affecting marine cetaceans.
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Affiliation(s)
- Michelle Imlau
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany.
| | - Iván Conejeros
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany.
| | - Tamara Muñoz-Caro
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
| | - Ershun Zhou
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
| | - Ulrich Gärtner
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen, Giessen, Germany
| | | | - Anja Taubert
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
| | - Carlos Hermosilla
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Giessen, Germany
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164
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Monteiro SS, Bozzetti M, Torres J, Tavares AS, Ferreira M, Pereira AT, Sá S, Araújo H, Bastos-Santos J, Oliveira I, Vingada JV, Eira C. Striped dolphins as trace element biomonitoring tools in oceanic waters: Accounting for health-related variables. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 699:134410. [PMID: 31678876 DOI: 10.1016/j.scitotenv.2019.134410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
In Europe, monitoring contaminant concentrations and their effects in the marine environment is required under the Marine Strategy Framework Directive (MSFD, 2008/56/EC). The striped dolphin (Stenella coeruleoalba) is the most abundant small cetacean species in Portuguese oceanic waters, representing a potential biomonitoring tool of contaminant levels in offshore waters. Concentrations of nine trace elements were evaluated by ICP-MS in kidney, liver and muscle samples of 31 striped dolphins stranded in the Portuguese continental coast. The mean renal Cd concentration was high (19.3 μg.g-1 wet weight, range 0.1-69.3 μg.g-1 wet weight) comparing to striped dolphins from other locations. Therefore, the present study reports a possibly concerning level of Cd in the oceanic food chain in Portuguese offshore areas. This study also aimed at evaluating potential relationships between trace element concentrations and striped dolphins' biological and health-related variables. Individual length was related with some of the trace element concentrations detected in striped dolphins. Indeed, Cd, Hg and Se bioaccumulated in larger animals, whereas the reverse was observed for Mn and Zn. Striped dolphins with high parasite burdens showed higher levels of Hg, while animals showing gross pathologies presented higher concentrations of Cd and Se. This study reported relationships between trace element concentrations and health-related variables for the first time in striped dolphins and it also provided information on the relative contamination status of Portuguese oceanic waters in comparison to other regions in the world.
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Affiliation(s)
- Silvia S Monteiro
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal.
| | - Márcia Bozzetti
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal
| | - Jordi Torres
- Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Av. Joan XXIII, s/n, 08028 Barcelona, Spain; Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Av. Diagonal, 645, 08028 Barcelona, Spain
| | - Ana S Tavares
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal
| | - Marisa Ferreira
- Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal; Departamento de Biologia & CBMA, Universidade de Minho, Campus de Gualtar, 4710-047 Braga, Portugal
| | - Andreia T Pereira
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal
| | - Sara Sá
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal
| | - Hélder Araújo
- Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal; Campus do Mar, International Campus of Excellence, Pontevedra, Spain
| | - Jorge Bastos-Santos
- Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal; Campus do Mar, International Campus of Excellence, Pontevedra, Spain
| | - Isabel Oliveira
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal
| | - José V Vingada
- Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal; Departamento de Biologia & CBMA, Universidade de Minho, Campus de Gualtar, 4710-047 Braga, Portugal
| | - Catarina Eira
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal; Sociedade Portuguesa de Vida Selvagem, Universidade de Minho, Departamento de Biologia, Campus de Gualtar, 4710-047 Braga, Portugal
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165
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Bioaccumulation and Toxicological Effects of UV-Filters on Marine Species. THE HANDBOOK OF ENVIRONMENTAL CHEMISTRY 2020. [DOI: 10.1007/698_2019_442] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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166
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Bioavailability and Bioaccumulation of Pyrethroid Insecticides in Wildlife and Humans. THE HANDBOOK OF ENVIRONMENTAL CHEMISTRY 2020. [DOI: 10.1007/698_2020_466] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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167
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Trukhin AM, Boyarova MD. Organochlorine pesticides (HCH and DDT) in blubber of spotted seals (Phoca largha) from the western Sea of Japan. MARINE POLLUTION BULLETIN 2020; 150:110738. [PMID: 31759636 DOI: 10.1016/j.marpolbul.2019.110738] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
In 2014-2019, a total of 31 blubber samples were collected from spotted seals (Phoca largha) in the western Sea of Japan. The samples were analyzed by gas chromatography to determine level of organochlorine pesticides (OCPs). The concentration of hexachlorocyclohexane and its isomers (∑HCH) ranged from 389 to 50,070 ng/g lipid weght; the concentration of dichlorodiphenyltrichloroethane and its metabolites (∑DDT), ranged from 62,720 to 1,110,930 ng/g lipid wt. Transfer of HCH and DDT from mother to pup during pregnancy and lactation was documented. The OCP concentration in blubber of spotted seals from the western Sea of Japan is one to two orders of magnitude higher than in spotted seals inhabiting waters off the Japan coast. Organochlorines detected in the western Sea of Japan likely come from some countries of Southeast Asia still using OCPs in the agriculture sector.
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Affiliation(s)
- Alexey M Trukhin
- V.I. Il'ichev Pacific Oceanological Institute (POI), Far Eastern Branch, Russian Academy of Science, ul. Baltiyskaya 41, 690043 Vladivostok, Russia.
| | - Margarita D Boyarova
- School of Biomedicine, Far Eastern Federal University, ul. Sukhanova 8, 690091 Vladivostok, Russia
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168
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Lynch KM, Fair PA, Houde M, Muir DC, Kannan K, Bossart GD, Bartell SM, Gribble MO. Temporal Trends in Per- and Polyfluoroalkyl Substances in Bottlenose Dolphins ( Tursiops truncatus) of Indian River Lagoon, Florida and Charleston, South Carolina. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:14194-14203. [PMID: 31804805 PMCID: PMC7051242 DOI: 10.1021/acs.est.9b04585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Temporal trends in plasma concentrations of per- and polyfluoroalkyl substances (PFAS) in free-ranging bottlenose dolphins (Tursiops truncatus) inhabiting two geographic areas: Indian River Lagoon, Florida over the years 2003-2015 and the waters surrounding Charleston, South Carolina over 2003-2013, were examined. Nine PFAS met the inclusion criteria for analysis based on percent of values below level of detection and sampling years. Proportionate percentiles parametric quantile regression assuming lognormal distributions was used to estimate the average ratio of PFAS concentrations per year for each chemical. Plasma concentrations decreased over time for perfluorodecanoate (PFDA), perfluorohexane sulfonate (PFHxS), perfluorooctanoate (PFOA), perfluorooctane sulfonate (PFOS), and perfluoroundecanoate (PFUnDA) in both locations. Perfluorononanoate (PFNA) decreased with time in Indian River Lagoon dolphins. Perfluorododecanoate (PFDoDA) concentrations significantly increased over time among female Indian River Lagoon dolphins. Regulation and phaseout of specific PFAS groups may have led to the decreasing levels of those PFAS and increasing levels of other replacement PFAS.
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Affiliation(s)
- Katie M. Lynch
- Department of Environmental Health, Emory University Rollins School of Public Health, Atlanta, GA 30322, USA
| | - Patricia A. Fair
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29412, USA
| | - Magali Houde
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, Montreal, Quebec H2Y 2E7, Canada
| | - Derek C.G. Muir
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, Burlington, Ontario L7S 1A1, Canada
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Empire State Plaza, Albany, NY 12201, USA
| | | | - Scott M. Bartell
- Program in Public Health and Department of Statistics, University of California, Irvine, CA 92697, USA
| | - Matthew O. Gribble
- Department of Environmental Health, Emory University Rollins School of Public Health, Atlanta, GA 30322, USA
- Corresponding author: Matthew Gribble, PhD DABT, Address: 1518 Clifton Road NE, Mailstop 1518-002-2BB, Atlanta, Georgia 30322, T: 404-712-8908,
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169
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Backer LC, Bolton B, Litz JA, Trevillian J, Kieszak S, Kucklick J. Environmental contaminants in coastal populations: Comparisons with the National Health and Nutrition Examination Survey (NHANES) and resident dolphins. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:134041. [PMID: 32636572 PMCID: PMC7340099 DOI: 10.1016/j.scitotenv.2019.134041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND People living in coastal communities are at risk for exposure to environmental hazards, including legacy chemicals. We can use databases such as NHANES to assess whether contaminants in coastal communities are present in higher levels than in the United States overall. We can use information from studies of local animal populations to assess which of these contaminants could have been transferred to people from their shared environment. OBJECTIVE Our objectives were to examine the POP profiles in human populations in areas where there are published POP profiles in resident dolphins and to compare our results with data from NHANES and the dolphin studies. METHODS We identified three areas where POPs have been analyzed in local resident dolphin populations (total N =73). We identified human communities in the same areas, and asked 27 eligible adults to read and sign a consent form, complete a questionnaire about demographics and seafood consumption, provide nine 10-mL blood samples, and provide one sample of seafood (N = 33). Blood and seafood were analyzed for a suite of POPs similar to those analyzed in published dolphin population studies. We compared the results from human blood analyses with NHANES and with data from the published reports of dolphin studies. RESULTS Levels and proportions of specific POPs found in people and animals reflect POPs found in the local environment. Compared with the nationally representative data reported in NHANES, the levels of many POPs found in high levels in dolphins were also higher in the corresponding human communities. CONCLUSIONS Contaminants measured in marine animals, such as dolphins, can be used to identify the types and relative levels of environmental contaminants expected to occur in people sharing the same environment. Likewise, contaminants measured in coastal human populations can provide insight into which contaminants may be found in nearby animal populations.
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Affiliation(s)
- Lorraine C. Backer
- National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Birgit Bolton
- National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
- International Trachoma Initiative, The Task Force for Global Health, Decatur, GA, USA
| | | | | | - Stephanie Kieszak
- National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - John Kucklick
- National Institute of Standards and Technology, Charleston, SC, USA
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170
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Barratclough A, Wells RS, Schwacke LH, Rowles TK, Gomez FM, Fauquier DA, Sweeney JC, Townsend FI, Hansen LJ, Zolman ES, Balmer BC, Smith CR. Health Assessments of Common Bottlenose Dolphins ( Tursiops truncatus): Past, Present, and Potential Conservation Applications. Front Vet Sci 2019; 6:444. [PMID: 31921905 PMCID: PMC6923228 DOI: 10.3389/fvets.2019.00444] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 11/26/2019] [Indexed: 01/14/2023] Open
Abstract
The common bottlenose dolphin (Tursiops truncatus) is a global marine mammal species for which some populations, due to their coastal accessibility, have been monitored diligently by scientists for decades. Health assessment examinations have developed a comprehensive knowledge base of dolphin biology, population structure, and environmental or anthropogenic stressors affecting their dynamics. Bottlenose dolphin health assessments initially started as stock assessments prior to acquisition. Over the last four decades, health assessments have evolved into essential conservation management tools of free-ranging dolphin populations. Baseline data enable comparison of stressors between geographic locations and associated changes in individual and population health status. In addition, long-term monitoring provides opportunities for insights into population shifts over time, with retrospective application of novel diagnostic tests on archived samples. Expanding scientific knowledge enables effective long-term conservation management strategies by facilitating informed decision making and improving social understanding of the anthropogenic effects. The ability to use bottlenose dolphins as a model for studying marine mammal health has been pivotal in our understanding of anthropogenic effects on multiple marine mammal species. Future studies aim to build on current knowledge to influence management decisions and species conservation. This paper reviews the historical approaches to dolphin health assessments, present day achievements, and development of future conservation goals.
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Affiliation(s)
| | - Randall S Wells
- Chicago Zoological Society's Sarasota Dolphin Research Program, Mote Marine Laboratory, Sarasota, FL, United States
| | - Lori H Schwacke
- National Marine Mammal Foundation, San Diego, CA, United States
| | - Teresa K Rowles
- NOAA, National Marine Fisheries Service, Office of Protected Resources, Silver Spring, MD, United States
| | - Forrest M Gomez
- National Marine Mammal Foundation, San Diego, CA, United States
| | - Deborah A Fauquier
- NOAA, National Marine Fisheries Service, Office of Protected Resources, Silver Spring, MD, United States
| | | | | | - Larry J Hansen
- National Marine Mammal Foundation, San Diego, CA, United States
| | - Eric S Zolman
- National Marine Mammal Foundation, San Diego, CA, United States
| | - Brian C Balmer
- National Marine Mammal Foundation, San Diego, CA, United States
| | - Cynthia R Smith
- National Marine Mammal Foundation, San Diego, CA, United States
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171
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Di Salvo AR, Chomel BB. Zoonoses and potential zoonoses of bears. Zoonoses Public Health 2019; 67:3-13. [PMID: 31828973 DOI: 10.1111/zph.12674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/10/2019] [Accepted: 11/20/2019] [Indexed: 11/30/2022]
Abstract
Captive and free-ranging wild bears can carry and transmit several zoonotic pathogens. A review of nearly 90 years of scientific publications concerning confirmed and potential zoonotic diseases that can be present in any of the eight species of bears in the world was conducted. The findings were organized amongst the following disease sections: bacterial, viral, protozoal, mycotic, helminth and arthropod-borne. The most commonly reported pathogens of concern were of parasitic (Trichinella, Toxoplasma) and bacterial (Francisella, Brucella) origin.
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Affiliation(s)
- Andrew R Di Salvo
- Karen C. Drayer Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California.,Wildlife Investigations Laboratory, California Department of Fish and Wildlife, Rancho Cordova, California
| | - Bruno B Chomel
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, California
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172
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Pace A, Dipineto L, Fioretti A, Hochscheid S. Loggerhead sea turtles as sentinels in the western Mediterranean: antibiotic resistance and environment-related modifications of Gram-negative bacteria. MARINE POLLUTION BULLETIN 2019; 149:110575. [PMID: 31550577 DOI: 10.1016/j.marpolbul.2019.110575] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 07/18/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
Sea turtles possess relevant characteristics to serve as sentinel species for monitoring the health of marine ecosystems, which is currently threatened. This study examined 35 loggerhead turtles from the western Mediterranean, focusing on the oral and cloacal prevalence of aerobic Gram-negative bacteria, their antibiotic resistance and the influence of several variables linked both to the animal and the environment (i.e. estimated life stage; area, season and cause of recovery; plastic ingestion). Conventional bacteriology methods led to the isolation of bacterial families commonly regarded as opportunistic pathogens (i.e. Aeromonadaceae; Enterobacteriaceae; Pseudomonadaceae; Shewanellaceae; Vibrionaceae), but pointing out sea turtles as carriers of potential zoonotic agents. The high rates of antibiotic resistance, here detected, raise important concerns on the dissemination of this phenomenon in marine environments. Moreover, several of the examined variables showed a significant influence on the prevalence of bacterial families, strengthening the role of sea turtles as mirrors of their ecosystems.
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Affiliation(s)
- Antonino Pace
- Department of Veterinary Medicine and Animal Productions, University Federico II, Via Delpino 1, 80137 Naples, Italy; Marine Turtle Research Centre, Stazione Zoologica Anton Dohrn, Via Nuova Macello 16, 80055 Portici, NA, Italy.
| | - Ludovico Dipineto
- Department of Veterinary Medicine and Animal Productions, University Federico II, Via Delpino 1, 80137 Naples, Italy.
| | - Alessandro Fioretti
- Department of Veterinary Medicine and Animal Productions, University Federico II, Via Delpino 1, 80137 Naples, Italy.
| | - Sandra Hochscheid
- Marine Turtle Research Centre, Stazione Zoologica Anton Dohrn, Via Nuova Macello 16, 80055 Portici, NA, Italy.
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173
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Mosquera-Guerra F, Trujillo F, Parks D, Oliveira-da-Costa M, Van Damme PA, Echeverría A, Franco N, Carvajal-Castro JD, Mantilla-Meluk H, Marmontel M, Armenteras-Pascual D. Mercury in Populations of River Dolphins of the Amazon and Orinoco Basins. ECOHEALTH 2019; 16:743-758. [PMID: 31712931 DOI: 10.1007/s10393-019-01451-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 10/03/2019] [Indexed: 05/26/2023]
Abstract
In the Amazon and Orinoco basins, mercury has been released from artisanal and industrial gold mining since the Colonial time, as well as a result of deforestation and burning of primary forest, that release natural deposits of methyl mercury, affecting the local aquatic vertebrate fauna. This study reports the presence of mercury in river dolphins' genera Inia and Sotalia. Mercury concentrations were analysed in muscle tissue samples collected from 46 individuals at the Arauca and Orinoco Rivers (Colombia), the Amazon River (Colombia), a tributary of the Itenez River (Bolivia) and from the Tapajos River (Brazil). Ranges of total mercury (Hg) concentration in muscle tissue of the four different taxa sampled were: I. geoffrensis humboldtiana 0.003-3.99 mg kg-1 ww (n = 21, Me = 0.4), I. g. geoffrensis 0.1-2.6 mg kg-1 ww (n = 15, Me = 0.55), I. boliviensis 0.03-0.4 mg kg-1 ww (n = 8, Me = 0.1) and S. fluviatilis 0.1-0.87 mg kg-1 ww (n = 2, Me = 0.5). The highest Hg concentration in our study was obtained at the Orinoco basin, recorded from a juvenile male of I. g. humboldtiana (3.99 mg kg-1 ww). At the Amazon basin, higher concentrations of mercury were recorded in the Tapajos River (Brazil) from an adult male of I. g. geoffrensis (2.6 mg kg-1 ww) and the Amazon River from an adult female of S. fluviatilis (0.87 mg kg-1 ww). Our data support the presence of total Hg in river dolphins distributed across the evaluated basins, evidencing the role of these cetaceans as sentinel species and bioindicators of the presence of this heavy metal in natural aquatic environments.
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Affiliation(s)
- F Mosquera-Guerra
- Fundación Omacha, Calle 84 No. 21-64, Barrio El Polo, Bogotá, DC, Colombia.
- Grupo de Ecología del Paisaje y Modelación de Ecosistemas-ECOLMOD, Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia, Cra 30 No. 45-03, Bogotá, DC, Colombia.
| | - F Trujillo
- Fundación Omacha, Calle 84 No. 21-64, Barrio El Polo, Bogotá, DC, Colombia
| | - D Parks
- Whitley Fund for Nature, 110 Princedale Road l, London, W11 4NH, UK
| | | | - P A Van Damme
- Faunagua, final Av. Max Fernández final s/n - Plazuela Chillijchi (Arocagua Norte) - Sacaba, Cochabamba, Bolivia
| | - A Echeverría
- Faunagua, final Av. Max Fernández final s/n - Plazuela Chillijchi (Arocagua Norte) - Sacaba, Cochabamba, Bolivia
| | - N Franco
- Fundación Omacha, Calle 84 No. 21-64, Barrio El Polo, Bogotá, DC, Colombia
| | - J D Carvajal-Castro
- Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Bogotá, DC, Colombia
| | - H Mantilla-Meluk
- Programa de Biología, Universidad del Quindío, Carrera 15 No. 12 Norte, Armenia, Quindío, Colombia
| | - M Marmontel
- Instituto Mamirauá de Desenvolvimento Sustentável, Estrada do Bexiga, 2.584 Bairro Fonte Boa, Cx. Postal 38, Tefé, AM, 69.553-225, Brazil
| | - D Armenteras-Pascual
- Grupo de Ecología del Paisaje y Modelación de Ecosistemas-ECOLMOD, Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia, Cra 30 No. 45-03, Bogotá, DC, Colombia
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174
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Harley JR, Gill VA, Lee S, Kannan K, Santana V, Burek-Huntington K, O'Hara TM. Concentrations of organohalogens (PCBs, DDTs, PBDEs) in hunted and stranded Northern sea otters (Enhydra lutris kenyoni) in Alaska from 1992 to 2010: Links to pathology and feeding ecology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 691:789-798. [PMID: 31326802 PMCID: PMC6711818 DOI: 10.1016/j.scitotenv.2019.07.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
Many organohalogen compounds (OHCs) are persistent organic pollutants (POPs) found in appreciable concentrations in marine predators. While production of some POPs has declined or ceased in recent decades, their capacity for global transport and bioaccumulation results in observations of unchanging or increasing concentrations in marine systems. Sea otters (Enhydra lutris) have been advocated as an environmental sentinel for contaminants due to their longevity, site fidelity and prey species that often overlap with human consumption. Using archived (1992-2010) samples of livers from Northern sea otters (n = 50) from Alaska we examine concentrations of chlordanes (CHLs), polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDTs), and polybrominated diphenyl ethers (PBDEs) and associated metabolites. We found some evidence for declining ΣPCBs over the two decades, however for most animals concentrations were low compared to toxicological thresholds. Six animals had relatively high concentrations of ΣPCBs (mean = 262,000 ng/g lipid weight), ΣDDTs (mean = 8,800 ng/g lw), and ΣPBDEs (mean = 4,600 ng/g lw), with four of these six animals experiencing hepatic parasitism or hepatitis. In order to assess whether differences in POP concentrations are associated with feeding ecology, we examined stable isotopes of C and N in archived muscle and whisker samples. In general, there were no significant relationships between ΣPOP concentrations and stable isotope ratios. There were small differences in stable isotope profiles in animals with high POP concentrations, although it was unclear if these differences were due to feeding ecology or disease processes. This study highlights the importance of considering feeding ecology and necropsy (health and disease status) data while conducting contaminant surveys, and confirms some previous reports of trends in OHCs in Alaska marine mammals.
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Affiliation(s)
- John R Harley
- Alaska Coastal Rainforest Center, University of Alaska Southeast, 11066 Auke Lake Way, Juneau, AK 99801, USA.
| | - Verena A Gill
- United States Fish and Wildlife Service, Marine Mammals Management, 1011 East Tudor Road, MS 341, Anchorage, AK 99503, USA; National Oceanic and Atmospheric Administration Fisheries, 222 W. 7th Ave, Rm 552, Anchorage, AK 99513, USA
| | - Sunmi Lee
- Wadsworth Center, New York State Department of Health, Albany, NY 12201, USA; School of Public Health, State University of New York, Albany, NY 12201, USA
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Albany, NY 12201, USA; School of Public Health, State University of New York, Albany, NY 12201, USA
| | - Vanessa Santana
- Department of Biology and Wildlife, University of Alaska, Fairbanks, 982 Koyukuk Dr, Fairbanks, AK 99775-7750, USA
| | - Kathy Burek-Huntington
- Alaska Veterinary Pathology Services, 23834 The Clearing Drive, Eagle River, AK 99577, USA
| | - Todd M O'Hara
- Department of Veterinary Medicine, University of Alaska, Fairbanks, 901 Koyukuk Dr, Fairbanks, AK 99775-7750, USA
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175
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Mafra LL, Nolli PKW, Mota LE, Domit C, Soeth M, Luz LFG, Sobrinho BF, Leal JG, Di Domenico M. Multi-species okadaic acid contamination and human poisoning during a massive bloom of Dinophysis acuminata complex in southern Brazil. HARMFUL ALGAE 2019; 89:101662. [PMID: 31672229 DOI: 10.1016/j.hal.2019.101662] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 08/01/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
On June 2016, a major bloom of Dinophysis acuminata complex was noticed over the coast of Paraná State (PR), southern Brazil, an area unprotected by any official monitoring program. Here we report the results of an extensive sampling effort that ultimately led PR authorities to issue the first State shellfish-harvesting ban due to multi-species okadaic acid (OA) contamination. During its peak, the bloom covered an area of 201 km2 (∼2.0-3.5 × 54.0 km), attaining unprecedentedly high cell densities along the shallow (<15 m) continental shelf (mean 2.2 × 105, maximum 2.1 × 106 cells L-1) and adjacent sandy beaches (mean 2.8 × 105, maximum 5.2 × 106 cells L-1). Only OA was detected in suspension (max. 188 ng L-1). Toxin levels measured in bivalves were several times greater than the regulatory limit of 160 ng g-1, reaching up to 3600 ng g-1 in Crassostrea gasar, by far the highest OA concentrations ever reported in oysters worldwide, 7700 ng g-1 in brown mussels, Perna perna, and lower levels in clams, Anomalocardia brasiliana, and mangrove mussels, Mytella spp. Nine cases of human intoxication were officially reported and five people were hospitalized with typical symptoms of Diarrhetic Shellfish Poisoning linked to the consumption of contaminated bivalves. All bivalves quickly converted most of the OA into its esterified form, DTX-3, and eliminated the toxins only a few weeks following the bloom, with C. gasar being the slowest-detoxifying species. Lower OA levels were accumulated in zooplankton, gastropods and several novel toxin vectors, including benthic organisms such as sand dollars Mellita quinquiesperforata and the ghost-shrimp Callichirus major, which may act as a good indicator of the presence of toxins in sandy beaches, and pelagic fish species that can serve as potential alternative sources of OA to humans (Chaetodipterus faber and Mugil liza). Monitoring toxin contamination in seafood other than bivalves is thus recommended to ensure comprehensive human health protection during massive Dinophysis blooms. Additionally, since OA was also present at low concentrations in the liver of Guiana dolphins Sotalia guianensis and penguins Spheniscus magellanicus, exposure to biotoxins should be considered in conservation actions involving threatened and near-threatened marine organisms in this region.
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Affiliation(s)
- L L Mafra
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil.
| | - P K W Nolli
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
| | - L E Mota
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
| | - C Domit
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
| | - M Soeth
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
| | - L F G Luz
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
| | - B F Sobrinho
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
| | - J G Leal
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
| | - M Di Domenico
- Centro de Estudos do Mar, Universidade Federal do Paraná. P.O. Box 61. Pontal do Paraná, PR, 83255-976, Brazil
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176
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Obusan MCM, Villanueva RMD, Siringan MAT, Rivera WL, Aragones LV. Leptospira spp. and Toxoplasma gondii in stranded representatives of wild cetaceans in the Philippines. BMC Vet Res 2019; 15:372. [PMID: 31655601 PMCID: PMC6815370 DOI: 10.1186/s12917-019-2112-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 09/24/2019] [Indexed: 01/26/2023] Open
Abstract
Background The stranding events of cetaceans in the Philippines provide opportunities for gathering biological information and specimens, especially from the pelagic forms. As part of an effort to monitor the health of wild cetaceans, this study detected Leptospira spp. and Toxoplasma gondii, causative agents of the emerging zoonotic diseases leptospirosis and toxoplasmosis respectively, in their stranded representatives. From October 2016–August 2018, 40 cetaceans (representing 14 species) that stranded nationwide were sampled for brain, cardiac muscle, skeletal muscle, kidney, and blood tissues, urine, and sera. These were subjected to molecular, serological, culture, and histopathological analyses to detect the target pathogens. Results T. gondii was detected in 20 (71%) of the 28 cetaceans with biological samples subjected to either molecular detection through RE gene amplification or IgG antibodies detection through agglutination-based serological assay. On the other hand, Leptospira was detected in 18 (64%) of 28 cetaceans with biological samples subjected to bacterial culture, molecular detection through 16S rDNA amplification, or IgM antibodies detection through ELISA-based serological assay. Conclusions There is the plausibility of toxoplasmosis and leptospirosis in cetacean populations found in the Philippines, however, acute or chronic phases of infections in sampled stranded individuals cannot be confirmed in the absence of supporting pathological observations and corroborating detection tests. Further studies should look for more evidences of pathogenicity, and explore the specific mechanisms by which pelagic cetacean species become infected by Leptospira spp. and T. gondii. As there is growing evidence on the role of cetaceans as sentinels of land-sea movement of emerging pathogens and the diseases they cause, any opportunity, such as their stranding events, should be maximized to investigate the health of their populations. Moreover, the role of leptospirosis or toxoplasmosis in these stranding events must be considered.
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Affiliation(s)
- Marie Christine M Obusan
- Institute of Biology, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines. .,Natural Sciences Research Institute, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines.
| | - Ren Mark D Villanueva
- Institute of Biology, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines.,Natural Sciences Research Institute, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines
| | - Maria Auxilia T Siringan
- Institute of Environmental Science and Meteorology, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines
| | - Windell L Rivera
- Institute of Biology, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines.,Natural Sciences Research Institute, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines
| | - Lemnuel V Aragones
- Natural Sciences Research Institute, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines.,Institute of Environmental Science and Meteorology, College of Science, University of the Philippines, Diliman, Quezon City, 1101, Philippines
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177
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Microbiota fingerprints within the oral cavity of cetaceans as indicators for population biomonitoring. Sci Rep 2019; 9:13679. [PMID: 31548611 PMCID: PMC6757053 DOI: 10.1038/s41598-019-50139-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 09/05/2019] [Indexed: 12/13/2022] Open
Abstract
The composition of mammalian microbiota has been related with the host health status. In this study, we assessed the oral microbiome of 3 cetacean species most commonly found stranded in Iberian Atlantic waters (Delphinus delphis, Stenella coeruleoalba and Phocoena phocoena), using 16S rDNA-amplicon metabarcoding. All oral microbiomes were dominated by Proteobacteria, Firmicutes, Bacteroidetes and Fusobacteria bacteria, which were also predominant in the oral cavity of Tursiops truncatus. A Constrained Canonical Analysis (CCA) showed that the major factors shaping the composition of 38 oral microbiomes (p-value < 0.05) were: (i) animal species and (ii) age class, segregating adults and juveniles. The correlation analysis also grouped the microbiomes by animal stranding location and health status. Similar discriminatory patterns were detected using the data from a previous study on Tursiops truncatus, indicating that this correlation approach may facilitate data comparisons between different studies on several cetacean species. This study identified a total of 15 bacterial genera and 27 OTUs discriminating between the observed CCA groups, which can be further explored as microbiota fingerprints to develop (i) specific diagnostic assays for cetacean population conservation and (ii) bio-monitoring approaches to assess the health of marine ecosystems from the Iberian Atlantic basin, using cetaceans as bioindicators.
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178
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Zanuttini C, Gally F, Scholl G, Thomé JP, Eppe G, Das K. High pollutant exposure level of the largest European community of bottlenose dolphins in the English Channel. Sci Rep 2019; 9:12521. [PMID: 31515499 PMCID: PMC6742642 DOI: 10.1038/s41598-019-48485-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 07/16/2019] [Indexed: 11/10/2022] Open
Abstract
The objective of this study was to assess the levels of persistent organic pollutants (POPs) and mercury (T-Hg) in the blubber and skin, respectively, of the free-ranging bottlenose dolphins, Tursiops truncatus, from the Normanno-Breton Gulf, one of the largest identified coastal population in Europe. Among all the POPs analysed in this study, the ∑NDL-PCBs were the most abundant compounds found in the blubber (mean: 1.33 × 105-0.65 × 105 ng.g-1 lipid weight (lw) for males and females respectively), followed by ∑DDX (1.11 × 104-4.67 × 103 ng.g-1 lw) > ∑DL-PCBs (8.06 × 103-2.62 × 103ng.g-1 lw) > ∑PBDEs (1.95 × 103-0.64 × 103ng.g-1 lw) > dieldrin (1.86 × 103-0.18 × 103 ng.g-1 lw) > ∑endosulfan (405-62 ng.g-1 lw) > HCB (86-52 ng.g-1 lw) > ∑HCHs (47-60 ng.g-1 lw) > ∑chlordane (24-0.97 ng.g-1 lw) > ∑PCDFs (0.3-0.1 ng.g-1 lw) > ∑PCDDs (0.06-0.05 ng.g-1 lw). The T-Hg concentrations were highly variable between individuals (2.45 × 103 ng.g-1 to 21.3 × 103 ng.g-1 dry weight, dw). The reported concentrations are among the highest reported for cetaceans. We strongly recommend that the Normanno-Breton Gulf be a special area of conservation (cSAC) candidate because it contains the last large European population of bottlenose dolphins (rare or threatened within a European context) designated under the EC Habitats Directive.
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Affiliation(s)
- Cyrielle Zanuttini
- Groupe d'Etude des Cétacés du Cotentin (GECC), Place des Justes, 50130, Cherbourg-Octeville, France
| | - François Gally
- Groupe d'Etude des Cétacés du Cotentin (GECC), Place des Justes, 50130, Cherbourg-Octeville, France
| | - Georges Scholl
- CART, UR MolSys B6c, University of Liège, 4000, Liège, Belgium
| | - Jean-Pierre Thomé
- CART-LEAE, Freshwater and Oceanic sciences Unit of reSearch (FOCUS- CART-LEAE), B6C, University of Liège, Liège, Belgium
| | - Gauthier Eppe
- CART, UR MolSys B6c, University of Liège, 4000, Liège, Belgium
| | - Krishna Das
- Freshwater and Oceanic sciences Unit of reSearch (FOCUS-Oceanology), B6C, University of Liège, Liège, Belgium.
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179
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Chan SCY, Karczmarski L. Epidermal Lesions and Injuries of Coastal Dolphins as Indicators of Ecological Health. ECOHEALTH 2019; 16:576-582. [PMID: 31328242 DOI: 10.1007/s10393-019-01428-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 04/12/2019] [Accepted: 05/30/2019] [Indexed: 06/10/2023]
Abstract
Humpback dolphins (genus Sousa), obligatory inshore delphinids, are frequently exposed to adverse effects of many human activities. In Hong Kong, one of the world's most urbanised coastal regions, ~ 50% of the dolphins suffer from at least one type of epidermal lesions, likely related to anthropogenically degraded habitat. Furthermore, one in every ten dolphins has physical injuries indicative of vessel collisions, propeller cuts and fishing-gear entanglements. As top predators with long lifespan, dolphins are good "barometers" of marine environment and their compromised health conditions are symptomatic of increasingly degraded ecological conditions of coastal seas, especially in rapidly developing regions of fast-growing economies.
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Affiliation(s)
- Stephen C Y Chan
- School of Biological Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong
- Cetacean Ecology Lab, Cetacea Research Institute, Lantau, Hong Kong
| | - Leszek Karczmarski
- School of Biological Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong.
- Cetacean Ecology Lab, Cetacea Research Institute, Lantau, Hong Kong.
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180
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Nelms SE, Parry HE, Bennett KA, Galloway TS, Godley BJ, Santillo D, Lindeque PK. What goes in, must come out: Combining scat‐based molecular diet analysis and quantification of ingested microplastics in a marine top predator. Methods Ecol Evol 2019. [DOI: 10.1111/2041-210x.13271] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sarah E. Nelms
- Plymouth Marine Laboratory Plymouth UK
- Centre for Ecology and Conservation University of Exeter Cornwall UK
| | | | | | | | - Brendan J. Godley
- Centre for Ecology and Conservation University of Exeter Cornwall UK
- Environment and Sustainability Institute University of Exeter Cornwall UK
| | - David Santillo
- Greenpeace Research Laboratories, Innovation Centre Phase 2 University of Exeter Devon UK
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181
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Costa-Silva S, Sacristán C, Gonzales-Viera O, Díaz-Delgado J, Sánchez-Sarmiento AM, Marigo J, Groch KR, Carvalho VL, Ewbank AC, Colosio AC, Marcondes MCC, Meirelles ACOD, Bertozzi CP, Lailson-Brito J, Azevedo ADF, Ruoppolo V, Oliveira L, Ott PH, Catão-Dias JL. Toxoplasma gondii in cetaceans of Brazil: a histopathological and immunohistochemical survey. ACTA ACUST UNITED AC 2019; 28:395-402. [PMID: 31411314 DOI: 10.1590/s1984-29612019051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/24/2019] [Indexed: 12/19/2022]
Abstract
Toxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii. In cetaceans, T. gondii infection is a significant cause of morbidity and mortality. Despite the worldwide range and broad cetacean host record of T. gondii infection, there is limited information on toxoplasmosis in cetaceans from the Southern hemisphere. We investigated the occurrence of T. gondii by histopathology and immunohistochemistry in tissue samples of 185 animals comprising 20 different cetacean species from Brazil. Three out of 185 (1.6%) animals presented T. gondii-associated lesions: a captive killer whale Orcinus orca, a free-ranging common bottlenose dolphin Tursiops truncatus and a free-ranging Guiana dolphin Sotalia guianensis. The main lesions observed in these animals were necrotizing hepatitis, adrenalitis and lymphadenitis associated with protozoal cysts or extracellular tachyzoites presenting immunolabeling with anti-T. gondii antibodies. This study widens the spectrum of species and the geographic range of this agent in Brazil, and provides the first reports of T. gondii infection in a captive killer whale and in a free-ranging common bottlenose dolphin in South America.
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Affiliation(s)
- Samira Costa-Silva
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Carlos Sacristán
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Omar Gonzales-Viera
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Josué Díaz-Delgado
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Angélica María Sánchez-Sarmiento
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Juliana Marigo
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Kátia Regina Groch
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Vitor Luz Carvalho
- Associação de Pesquisa e Preservação de Ecossistemas Aquáticos - AQUASIS, Caucaia, CE, Brasil
| | - Ana Carolina Ewbank
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | | | | | | | - Carolina P Bertozzi
- Biopesca, Instituto de Biociências, Universidade Estadual Paulista - UNESP, Campus do Litoral Paulista, São Vicente, SP, Brasil
| | - José Lailson-Brito
- Laboratório de Mamíferos Aquáticos e de Bioindicadores "Profa Izabel M. G. do N. Gurgel" - MAQUA, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro - UERJ, Rio de Janeiro, RJ, Brasil
| | - Alexandre de Freitas Azevedo
- Laboratório de Mamíferos Aquáticos e de Bioindicadores "Profa Izabel M. G. do N. Gurgel" - MAQUA, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro - UERJ, Rio de Janeiro, RJ, Brasil
| | - Valéria Ruoppolo
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Larissa Oliveira
- Grupo de Estudos de Mamíferos Aquáticos do Rio Grande do Sul - GEMARS, Torres, RS, Brasil.,Laboratório de Ecologia de Mamíferos, Universidade do Vale do Rio dos Sinos - UNISINOS, São Leopoldo, RS, Brasil
| | - Paulo Henrique Ott
- Grupo de Estudos de Mamíferos Aquáticos do Rio Grande do Sul - GEMARS, Torres, RS, Brasil.,Laboratório de Biodiversidade e Conservação, Universidade Estadual do Rio Grande do Sul - UERGS, Unidade Litoral Norte, Osório, RS, Brasil
| | - José Luiz Catão-Dias
- Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
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182
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Barragán-Barrera DC, Luna-Acosta A, May-Collado LJ, Polo-Silva CJ, Riet-Sapriza FG, Bustamante P, Hernández-Ávila MP, Vélez N, Farías-Curtidor N, Caballero S. Foraging habits and levels of mercury in a resident population of bottlenose dolphins (Tursiops truncatus) in Bocas del Toro Archipelago, Caribbean Sea, Panama. MARINE POLLUTION BULLETIN 2019; 145:343-356. [PMID: 31590796 DOI: 10.1016/j.marpolbul.2019.04.076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/26/2019] [Accepted: 04/29/2019] [Indexed: 06/10/2023]
Abstract
A small and genetically isolated bottlenose dolphin (Tursiops truncatus) population resides year-round in the Bocas del Toro Archipelago-Panama (BDT). Photo-identification and genetic data showed that this dolphin population is highly phylopatric and is formed exclusively by individuals of the "inshore form". This study aimed to investigate the trophic ecology and mercury concentrations of bottlenose dolphins in BDT to assess their coastal habits. We collected muscle samples (n = 175) of 11 potential fish prey species, and skin samples from free-ranging dolphins in BDT (n = 37) and La Guajira-Colombia (n = 7) to compare isotopic niche width. Results showed that BDT dolphins have a coastal feeding habit, belong to the "inshore form" (δ13C = -13.05 ± 1.89‰), and have low mercury concentrations (mean = 1637 ± 1387 ng g-1dw). However, this element is biomagnified in the BDT food chain, showing a marginal dolphins health risk (RQ = 1.00). We call for a monitoring pollutant program and conservation strategies aimed to protect the dolphin population at BDT.
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Affiliation(s)
- Dalia C Barragán-Barrera
- Laboratorio de Ecología Molecular de Vertebrados Acuáticos-LEMVA, Departamento de Ciencias Biológicas, Universidad de los Andes, Carrera 1 # 18A-10, Bogotá, Colombia; Fundación Macuáticos Colombia, Calle 27 # 79-167, Medellín, Colombia; Corporation Center of Excellence in Marine Sciences-CEMarin, Carrera 21 # 35-53, Bogotá, Colombia.
| | - Andrea Luna-Acosta
- Departamento de Ecología y Territorio, Facultad de Estudios Ambientales y Rurales, Pontificia Universidad Javeriana, Transversal 4 # 42-00, Bogotá, Colombia
| | - Laura J May-Collado
- Department of Biology, University of Vermont, 109 Carrigan Drive, Burlington, VT 05405, USA; Centro de Investigación en Ciencias del Mar y Limnología, Universidad de Costa Rica, Costa Rica
| | - Carlos J Polo-Silva
- Facultad de Ciencias Naturales e Ingeniería, Universidad de Bogotá Jorge Tadeo Lozano, Santa Marta, Colombia
| | - Federico G Riet-Sapriza
- Laboratorio de Ecología Molecular de Vertebrados Acuáticos-LEMVA, Departamento de Ciencias Biológicas, Universidad de los Andes, Carrera 1 # 18A-10, Bogotá, Colombia
| | - Paco Bustamante
- Littoral Environnement et Sociétés (LIENSs) UMR 7266 CNRS-Université de La Rochelle, 2 rue Olympe de Gouges, 17000 La Rochelle, France
| | - María Paula Hernández-Ávila
- Laboratorio de Ecología Molecular de Vertebrados Acuáticos-LEMVA, Departamento de Ciencias Biológicas, Universidad de los Andes, Carrera 1 # 18A-10, Bogotá, Colombia
| | - Natalia Vélez
- Departamento de Ecología y Territorio, Facultad de Estudios Ambientales y Rurales, Pontificia Universidad Javeriana, Transversal 4 # 42-00, Bogotá, Colombia; Fundación Malpelo y Otros Ecosistemas Marinos, Carrera 11 # 87-51, Local 4 - Piso 2, Bogotá, Colombia
| | | | - Susana Caballero
- Laboratorio de Ecología Molecular de Vertebrados Acuáticos-LEMVA, Departamento de Ciencias Biológicas, Universidad de los Andes, Carrera 1 # 18A-10, Bogotá, Colombia
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183
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Cates KA, Atkinson S, Gabriele CM, Pack AA, Straley JM, Yin S. Testosterone trends within and across seasons in male humpback whales (Megaptera novaeangliae) from Hawaii and Alaska. Gen Comp Endocrinol 2019; 279:164-173. [PMID: 30904390 DOI: 10.1016/j.ygcen.2019.03.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 03/18/2019] [Accepted: 03/18/2019] [Indexed: 11/30/2022]
Abstract
Understanding reproductive profiles and timing of reproductive events is essential in the management and conservation of humpback whales (Megaptera novaeangliae). Yet compared to other parameters and life history traits, such as abundance, migratory trends, reproductive rates, behavior and communication, relatively little is known about variations in reproductive physiology, especially in males. Here, an enzyme immunoassay (EIA) for testosterone was validated for use in biopsy samples from male humpback whales. Analyses were conducted on 277 North Pacific male humpback whale blubber samples, including 268 non-calves and 9 calves that were collected in the Hawaiian breeding grounds and the Southeast Alaskan feeding grounds from 2004 to 2006. Testosterone concentrations (ng/g) were significantly different between non-calves sampled in Hawaii (n = 182) and Alaska (n = 86, p < 0.05) with peak testosterone concentrations occurring in the winter (January-March) and the lowest concentrations occurring in the summer (June-September). Fall and spring showed increasing and decreasing trends in testosterone concentrations, respectively. Blubber testosterone concentrations in non-calves and calves sampled in Alaska were not significantly different. Blubber and skin from the same individual biopsies (n = 37) were also compared, with blubber having significantly higher testosterone concentrations (p < 0.05) than skin samples. We found variability in testosterone concentration with age, suggesting that male humpbacks reach peak lifetime testosterone concentrations in the breeding grounds around age 8-25 years. The testosterone profile of male humpback whales follows a predictable pattern for capital breeders, where testosterone begins to increase prior to the breeding season, stimulating the onset of spermatogenesis. Incorporation of reproductive hormonal profiles into our overall understanding of humpback whale physiology will shed additional light on the timing of reproduction and overall health of the recently delisted Hawaii distinct population segment (DPS).
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Affiliation(s)
- Kelly A Cates
- University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fisheries Department, Juneau Center, 17101 Pt. Lena Loop Road, Juneau, AK 99801, United States
| | - Shannon Atkinson
- University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fisheries Department, Juneau Center, 17101 Pt. Lena Loop Road, Juneau, AK 99801, United States.
| | | | - Adam A Pack
- Departments of Psychology and Biology, University of Hawai'i at Hilo, 200 West Kawili Street, Hilo, HI 96720, United States; The Dolphin Institute, P.O. Box 6279, Hilo, HI 96720, United States
| | - Janice M Straley
- University of Alaska Southeast Sitka Campus, 1332 Seward Ave., Sitka, AK 99835, United States
| | - Suzanne Yin
- Hawai'i Marine Mammal Consortium, P.O. Box 6107 Kamuela, HI 96743, United States
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184
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Bouchard C, Bracken C, Dabin W, Canneyt O, Ridoux V, Spitz J, Authier M. A risk‐based forecast of extreme mortality events in small cetaceans: Using stranding data to inform conservation practice. Conserv Lett 2019. [DOI: 10.1111/conl.12639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Colin Bouchard
- Observatoire Pelagis, UMS 3462 Université de La Rochelle, cnrs La Rochelle France
- UMR Ecobiop, UMR 1224, INRA University of Pau and Pays de l'Adour Saint‐Pée sur Nivelle France
| | | | - Willy Dabin
- Observatoire Pelagis, UMS 3462 Université de La Rochelle, cnrs La Rochelle France
| | - Olivier Canneyt
- Observatoire Pelagis, UMS 3462 Université de La Rochelle, cnrs La Rochelle France
| | - Vincent Ridoux
- Observatoire Pelagis, UMS 3462 Université de La Rochelle, cnrs La Rochelle France
- Centre d’Étude Biologiques de Chizé, UMS 7372 Université de La Rochelle, cnrs Villiers‐en‐bois France
| | - Jérôme Spitz
- Observatoire Pelagis, UMS 3462 Université de La Rochelle, cnrs La Rochelle France
| | - Matthieu Authier
- Observatoire Pelagis, UMS 3462 Université de La Rochelle, cnrs La Rochelle France
- Adera Pessac Cedex France
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185
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Bossart GD, Romano TA, Peden-Adams MM, Schaefer AM, Rice CD, Fair PA, Reif JS. Comparative Innate and Adaptive Immune Responses in Atlantic Bottlenose Dolphins ( Tursiops truncatus) With Viral, Bacterial, and Fungal Infections. Front Immunol 2019; 10:1125. [PMID: 31231361 PMCID: PMC6558379 DOI: 10.3389/fimmu.2019.01125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/03/2019] [Indexed: 02/05/2023] Open
Abstract
Free-ranging Atlantic bottlenose dolphins (n = 360) from two southeastern U.S. estuarine sites were given comprehensive health examinations between 2003 and 2015 as part of a multi-disciplinary research project focused on individual and population health. The study sites (and sample sizes) included the Indian River Lagoon (IRL), Florida, USA (n = 246) and Charleston harbor and associated rivers (CHS), South Carolina, USA (n = 114). Results of a suite of clinicoimmunopathologic tests revealed that both populations have a high prevalence of infectious and neoplastic disease and a variety of abnormalities of their innate and adaptive immune systems. Subclinical infections with cetacean morbillivirus and Chlamydiaceae were detected serologically. Clinical evidence of orogenital papillomatosis was supported by the detection of a new strain of dolphin papillomavirus and herpesvirus by molecular pathology. Dolphins with cutaneous lobomycosis/lacaziasis were subsequently shown to be infected with a novel, uncultivated strain of Paracoccidioides brasiliensis, now established as the etiologic agent of this enigmatic disease in dolphins. In this review, innate and adaptive immunologic responses are compared between healthy dolphins and those with clinical and/or immunopathologic evidence of infection with these specific viral, bacterial, and fungal pathogens. A wide range of immunologic host responses was associated with each pathogen, reflecting the dynamic and complex interplay between the innate, humoral, and cell-mediated immune systems in the dolphin. Collectively, these studies document the comparative innate and adaptive immune responses to various types of infectious diseases in free-ranging Atlantic bottlenose dolphins. Evaluation of the type, pattern, and degree of immunologic response to these pathogens provides novel insight on disease immunopathogenesis in this species and as a comparative model. Importantly, the data suggest that in some cases infection may be associated with subclinical immunopathologic perturbations that could impact overall individual and population health.
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Affiliation(s)
- Gregory D. Bossart
- Georgia Aquarium, Atlanta, GA, United States
- Division of Comparative Pathology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Tracy A. Romano
- The Mystic Aquarium, a Division of Sea Research Foundation, Inc., Mystic, CT, United States
| | - Margie M. Peden-Adams
- Harry Reid Center for Environmental Studies, University of Nevada, Las Vegas, NV, United States
| | - Adam M. Schaefer
- Harbor Branch Oceanographic Institute at Florida Atlantic University, Ft. Pierce, FL, United States
| | - Charles D. Rice
- Graduate Program in Environmental Toxicology, Department of Biological Sciences, Clemson University, Clemson, SC, United States
| | - Patricia A. Fair
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - John S. Reif
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
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186
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Grattarola C, Gallina S, Giorda F, Pautasso A, Ballardini M, Iulini B, Varello K, Goria M, Peletto S, Masoero L, Serracca L, Romano A, Dondo A, Zoppi S, Garibaldi F, Scaglione FE, Marsili L, Di Guardo G, Lettini AA, Mignone W, Fernandez A, Casalone C. First report of Salmonella 1,4,[5],12:i:- in free-ranging striped dolphins (Stenella coeruleoalba), Italy. Sci Rep 2019; 9:6061. [PMID: 30988332 PMCID: PMC6465278 DOI: 10.1038/s41598-019-42474-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 04/02/2019] [Indexed: 02/06/2023] Open
Abstract
Between 2015 and the beginning of 2018 (January-March), 30 cetaceans were found stranded along the Ligurian Sea coast of Italy. Necropsies were performed in 22 cases and infectious diseases resulted the most common cause of death. Three striped dolphins, showed a severe coinfection involving the monophasic variant of Salmonella Typhimurium (Salmonella 1,4,[5],12:i:-). The isolates were characterized based on antimicrobial resistance, Multiple-Locus Variable-number tandem-repeat Analysis (MLVA) and whole-genome sequencing (WGS). All isolates demonstrated the same multidrug resistant genotype (ASSuT isolates), showed three different MLVA profiles, two of which closely related, and were identified as Sequence Type 34. Moreover, Single nucleotide polymorphisms (SNP) analysis confirmed strong correlations between two out of the three isolates. To our knowledge, S. 1,4,[5],12:i:-, one of the most common serovars in cases of human infection and food sources worldwide, has not previously been described in marine mammals, and reports of Salmonella-associated disease in free-ranging cetaceans are rare. These results highlight the role of cetaceans as sentinel species for zoonotic and terrestrial pathogens in the marine environment, suggest a potential risk for cetaceans and public health along the North Western Italian coastline and indicate cetaceans as a novel potential reservoir for one of the most widespread Salmonella serovars.
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Affiliation(s)
- C Grattarola
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy.
| | - S Gallina
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - F Giorda
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy.,Institute of Animal Health, University of Las Palmas de Gran Canaria, Arucas, Las Palmas, 35416, Spain
| | - A Pautasso
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - M Ballardini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - B Iulini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - K Varello
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - M Goria
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - S Peletto
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - L Masoero
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - L Serracca
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - A Romano
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - A Dondo
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - S Zoppi
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - F Garibaldi
- Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, 16132, Italy
| | - F E Scaglione
- Department of Veterinary Sciences, University of Turin, Grugliasco, Turin, 10095, Italy
| | - L Marsili
- Department of Physical, Earth and Environmental Sciences, University of Siena, Siena, 53100, Italy
| | - G Di Guardo
- Faculty of Veterinary Medicine, University of Teramo, Teramo, 64100, Italy
| | - A A Lettini
- Reference Laboratory for Salmonella, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padua, 35020, Italy
| | - W Mignone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
| | - A Fernandez
- Institute of Animal Health, University of Las Palmas de Gran Canaria, Arucas, Las Palmas, 35416, Spain
| | - C Casalone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Torino, 10154, Italy
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187
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Yu HY, Chen I, Li WT, Chou LS. Ecological and Biological Characteristics for the Risso's Dolphins (Grampus griseus) Off Taiwan, with Conservation Evaluations on Potential Anthropogenic Threats. MAMMAL STUDY 2019. [DOI: 10.3106/ms2018-0038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Hsin-Yi Yu
- Institute of Ecology and Evolutionary Biology, National Taiwan University, 1 Roosevelt Road Sec. 4, Da'an Dist, Taipei 10617, Taiwan
| | - Ing Chen
- Division of Science, Yale-NUS College, 16 College Avenue West, Singapore 138527, Singapore
| | - Wen-Ta Li
- Graduate Institute of Molecular and Comparative Pathobiology, National Taiwan University, 1 Roosevelt Road Sec. 4, Da'an Dist, Taipei 10617, Taiwan
| | - Lien-Siang Chou
- Institute of Ecology and Evolutionary Biology, National Taiwan University, 1 Roosevelt Road Sec. 4, Da'an Dist, Taipei 10617, Taiwan
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188
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Esquible J, Atkinson S. Stranding trends of Steller sea lions Eumetopias jubatus 1990-2015. ENDANGER SPECIES RES 2019. [DOI: 10.3354/esr00945] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Distinct population segments of Steller sea lion (SSL) Eumetopias jubatus have experienced different population trends over the last 5 decades, rendering the need for retrospective study. By identifying long-term stranding trends of SSLs we can develop a better understanding of factors contributing to mortality that may affect SSL population dynamics. We characterized spatial and temporal trends of SSL strandings (n = 1507) in Alaska, Oregon, and Washington, USA, over a 25 yr period. Stranding reports were obtained from the Alaska and Northwest Region’s Marine Mammal Stranding Networks. Temporal trends were assessed by identifying seasonal patterns across all years (1990-2015), analyzing sex, age class, body length, and characterizing signs of human interaction including factors contributing to mortality. An apparent increase in strandings occurred after 2000, likely due to increased stranding response effort resulting from increased federal grant awards. Adult males were the most frequently stranded sex and age class in the Alaska (AK) and Northwest (NW) Regions. Clear seasonality trends were evident, with the greatest reported stranding occurrences during the spring and summer. Gunshot wounds and fishery interactions accounted for a large proportion (90%) of human interaction cases. In Alaska, the southeast region had the highest number of strandings. In the NW Region, Oregon had the highest documented strandings. Despite caveats associated with stranding data, our findings suggest rapid timing of continued stranding response is imperative for a better understanding of cause-specific mortality trends and other factors contributing to stranding events.
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Affiliation(s)
- J Esquible
- College of Fisheries and Ocean Sciences, Fisheries Department, University of Alaska Fairbanks, Juneau, Alaska 99801, USA
| | - S Atkinson
- College of Fisheries and Ocean Sciences, Fisheries Department, University of Alaska Fairbanks, Juneau, Alaska 99801, USA
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189
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Trego ML, Hoh E, Whitehead A, Kellar NM, Lauf M, Datuin DO, Lewison RL. Contaminant Exposure Linked to Cellular and Endocrine Biomarkers in Southern California Bottlenose Dolphins. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:3811-3822. [PMID: 30852886 DOI: 10.1021/acs.est.8b06487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cetaceans in the Southern California Bight (SCB) are exposed to high levels of halogenated organic contaminants (HOCs), which have previously been linked to impaired reproductive health and immune responses. We used a combination of molecular tools to examine the potential physiological impacts of HOC exposure in two bottlenose dolphin ( Tursiops truncatus) ecotypes in the SCB. We quantified 25 HOCs in the blubber of 22 biopsies collected from males between 2012 and 2016. We then analyzed genome-wide gene expression in skin using RNA-sequencing and measured blubber testosterone to compare HOC exposure with cellular and endocrine biomarkers. We found high levels of HOCs in both ecotypes with significantly higher total polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), tris(4-chlorophenyl)methanol (TCPMOH), and chlordane-related compounds in the coastal ecotype versus the offshore ecotype. We found evidence of PBDE bioaccumulation in both ecotypes, however, the pattern of bioaccumulation or endocrine disruption for other HOCs was different between the ecotypes, suggesting potential endocrine disruption in the coastal ecotype. We also observed correlations between HOCs and gene coexpression networks enriched for xenobiotic metabolism, hormone metabolism, and immune response that could indicate cellular effects from HOC exposure. By integrating measurements of HOC load with both transcriptome profiling and endocrine biomarkers, our approach provides insight into HOC exposure and potential impacts on wild cetacean health in southern California.
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Affiliation(s)
- Marisa L Trego
- Department of Biology , San Diego State University , 5500 Campanile Drive , San Diego , California 92182 , United States
- Department of Environmental Toxicology , University of California-Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Eunha Hoh
- School of Public Health , San Diego State University , 5500 Campanile Drive , San Diego , California 92182 , United States
| | - Andrew Whitehead
- Department of Environmental Toxicology , University of California-Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Nicholas M Kellar
- Ocean Associates, Incorporated, under contract to the Southwest Fisheries Science Center, National Marine Fisheries Service , National Oceanic and Atmospheric Administration , Arlington , Virginia 22207 , United States
| | - Morgane Lauf
- Ocean Associates, Incorporated, under contract to the Southwest Fisheries Science Center, National Marine Fisheries Service , National Oceanic and Atmospheric Administration , Arlington , Virginia 22207 , United States
| | - Dana O Datuin
- School of Public Health , San Diego State University , 5500 Campanile Drive , San Diego , California 92182 , United States
| | - Rebecca L Lewison
- Department of Biology , San Diego State University , 5500 Campanile Drive , San Diego , California 92182 , United States
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190
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Zhu J, Yu X, Zhang Q, Li Y, Tan S, Li D, Yang Z, Wang J. Cetaceans and microplastics: First report of microplastic ingestion by a coastal delphinid, Sousa chinensis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 659:649-654. [PMID: 31096394 DOI: 10.1016/j.scitotenv.2018.12.389] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/24/2018] [Accepted: 12/25/2018] [Indexed: 06/09/2023]
Abstract
In the Anthropocene, marine microplastic debris has been rapidly increasing and interacting with wildlife. As apex predators, cetaceans have been proven to be ideal sentinel species to indicate ecosystem changes and umbrella and flagship species to help develop environmental management strategies. Here, we report the presence of microplastics in the intestines of Sousa chinensis for the first time, which highlights the potential impacts of microplastic pollution in coastal environments. Microplastics were detected in the intestinal contents of both adult and calf individuals, indicating that consumption of prey and unintentional ingestion are the potential pathways for microplastic accumulation in Sousa chinensis. The properties of the microplastics indicated that fibers, white and blue items, 1-5 mm items, and polyester were the predominant shapes, colors, sizes and plastic materials, respectively. More microplastics were detected in the foreguts and midguts than in the hindguts, which may be correlated with the specific intestinal structure of Sousa. This study indicates that coastal delphinids might suffer from microplastic pollution, even young calves. The sample size in this study is limited, whereas it's a starting point for assessing microplastics in the endangered coastal delphinid, Sousa. We suggest that assessments of the risks of microplastic consumption by cetaceans and the presence of microplastics in their habitats should be conducted at a global scale. Moreover, further works should be done to look for evidence of adverse effects of microplastics pollution on cetaceans.
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Affiliation(s)
- Jingmin Zhu
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, Guangxi, China
| | - Xueying Yu
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, Guangxi, China
| | - Qiang Zhang
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, Guangxi, China
| | - Yanping Li
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, Guangxi, China
| | - Shudan Tan
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, Guangxi, China
| | - Ding Li
- College of Environment Science and Engineering, Guilin University of Technology, Guilin 541006, Guangxi, China
| | - Zongyao Yang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Jingzhen Wang
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, Guangxi, China; College of Environment Science and Engineering, Guilin University of Technology, Guilin 541006, Guangxi, China; College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China.
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191
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Fair PA, Wolf B, White ND, Arnott SA, Kannan K, Karthikraj R, Vena JE. Perfluoroalkyl substances (PFASs) in edible fish species from Charleston Harbor and tributaries, South Carolina, United States: Exposure and risk assessment. ENVIRONMENTAL RESEARCH 2019; 171:266-277. [PMID: 30703622 PMCID: PMC6943835 DOI: 10.1016/j.envres.2019.01.021] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 05/17/2023]
Abstract
Concentrations of 11 PFASs were determined in muscle and whole fish for six species collected from Charleston, South Carolina (SC) for the assessment of potential health risks to humans and wildlife. Across all species and capture locations, total PFAS levels in whole fish were significantly higher than fillets by a factor of two- to three-fold. Mean ∑PFAS concentrations varied from 12.7 to 33.0 ng/g wet weight (ww) in whole fish and 6.2-12.7 ng/g ww in fillets. For individual whole fish, ∑PFASs ranged from 12.7 ng/g ww in striped mullet to 85.4 ng/g ww in spotted seatrout, and in fillets individual values ranged from 6.2 ng/g ww in striped mullet to 27.9 ng/g ww in spot. The most abundant compound in each species was perfluorooctane sulfonate (PFOS), comprising 25.5-69.6% of the ∑PFASs. Striped mullet had significantly lower relative amounts of PFOS compared to all other species and higher relative amounts of PFUnDA compared to Atlantic croaker, spotted seatrout, and spot. Unlike whole fish, PFAS levels in fillets varied significantly by location with higher ∑PFOS from the Ashley River than the Cooper River and Charleston Harbor, which reflects the levels of PFASs contamination in these systems. In whole fish, differences in relative concentrations of PFOS, PFNA, and PFDA occurred by capture location, suggestive of different sources. PFOS concentrations for southern flounder and spotted seatrout fillets were within the advisory range to limit fish consumption to 4 meals a month. PFOS levels exceeded screening values to protect mammals in 83% of whole fish examined and represent a potential risk to wildlife predators such as dolphins.
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Affiliation(s)
- Patricia A Fair
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29412, USA; NOAA's Ocean Service, National Centers for Coastal Ocean Science, Charleston, SC 29412, USA.
| | - Beth Wolf
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29412, USA
| | - Natasha D White
- NOAA's Ocean Service, National Centers for Coastal Ocean Science, Charleston, SC 29412, USA
| | - Stephen A Arnott
- Marine Resources Research Institute, South Carolina Department of Natural Resources, Charleston, SC 29412, USA
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Empire State Plaza, PO Box 509, Albany, NY 12201-0509, USA
| | - Rajendiran Karthikraj
- Wadsworth Center, New York State Department of Health, Empire State Plaza, PO Box 509, Albany, NY 12201-0509, USA
| | - John E Vena
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29412, USA
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192
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Cossaboon JM, Hoh E, Chivers SJ, Weller DW, Danil K, Maruya KA, Dodder NG. Apex marine predators and ocean health: Proactive screening of halogenated organic contaminants reveals ecosystem indicator species. CHEMOSPHERE 2019; 221:656-664. [PMID: 30665094 PMCID: PMC6392016 DOI: 10.1016/j.chemosphere.2019.01.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 01/05/2019] [Accepted: 01/07/2019] [Indexed: 05/22/2023]
Abstract
Despite decades-long bans on the production and use of certain chemicals, many halogenated organic compounds (HOCs) are persistent and can bioaccumulate in the marine environment with the potential to cause physiological harm to marine fauna. Highly lipid-rich tissue (e.g., marine mammal blubber) functions as a reservoir for HOCs, and selecting ideal indicator species is a priority for retrospective and proactive screening efforts. We selected five marine mammal species as possible indicators for the Southern California Bight (SCB) and applied a non-targeted analytical method paired with an automated data reduction strategy to catalog a broad range of known, known but unexpected, and unknown compounds in their blubber. A total of 194 HOCs were detected across the study species (n = 25 individuals), 81% of which are not routinely monitored, including 30 halogenated natural products and 45 compounds of unknown structure and origin. The cetacean species (long-beaked common dolphin, short-beaked common dolphin, and Risso's dolphin) averaged 128 HOCs, whereas pinnipeds (California sea lion and Pacific harbor seal) averaged 47 HOCs. We suspect this disparity can be attributed to differences in life history, foraging strategies, and/or enzyme-mediated metabolism. Our results support proposing (1) the long- and short-beaked common dolphin as apex marine predator sentinels for future and retrospective biomonitoring of the SCB ecosystem and (2) the use of non-targeted contaminant analyses to identify and prioritize emerging contaminants. The use of a sentinel marine species together with the non-targeted analytical approach will enable a proactive approach to environmental contaminant monitoring.
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Affiliation(s)
| | - Eunha Hoh
- School of Public Health, San Diego State University, San Diego, CA 92182, USA
| | - Susan J Chivers
- Southwest Fisheries Science Center, National Oceanographic and Atmospheric Administration, La Jolla, CA 92037, USA
| | - David W Weller
- Southwest Fisheries Science Center, National Oceanographic and Atmospheric Administration, La Jolla, CA 92037, USA
| | - Kerri Danil
- Southwest Fisheries Science Center, National Oceanographic and Atmospheric Administration, La Jolla, CA 92037, USA
| | - Keith A Maruya
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA 92626, USA
| | - Nathan G Dodder
- School of Public Health, San Diego State University, San Diego, CA 92182, USA; San Diego State University Research Foundation, San Diego, CA 92182, USA.
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193
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Petroff R, Richards T, Crouthamel B, McKain N, Stanley C, Grant KS, Shum S, Jing J, Isoherranen N, Burbacher TM. Chronic, low-level oral exposure to marine toxin, domoic acid, alters whole brain morphometry in nonhuman primates. Neurotoxicology 2019; 72:114-124. [PMID: 30826346 DOI: 10.1016/j.neuro.2019.02.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 01/09/2023]
Abstract
Domoic acid (DA) is an excitatory neurotoxin produced by marine algae and responsible for Amnesiac Shellfish Poisoning in humans. Current regulatory limits (˜0.075-0.1 mg/kg/day) protect against acute toxicity, but recent studies suggest that the chronic consumption of DA below the regulatory limit may produce subtle neurotoxicity in adults, including decrements in memory. As DA-algal blooms are increasing in both severity and frequency, we sought to better understand the effects of chronic DA exposure on reproductive and neurobehavioral endpoints in a preclinical nonhuman primate model. To this end, we initiated a long-term study using adult, female Macaca fascicularis monkeys exposed to daily, oral doses of 0.075 or 0.15 mg/kg of DA for a range of 321-381, and 346-554 days, respectively. This time period included a pre-pregnancy, pregnancy, and postpartum period. Throughout these times, trained data collectors observed intentional tremors in some exposed animals during biweekly clinical examinations. The present study explores the basis of this neurobehavioral finding with in vivo imaging techniques, including diffusion tensor magnetic resonance imaging and spectroscopy. Diffusion tensor analyses revealed that, while DA exposed macaques did not significantly differ from controls, increases in DA-related tremors were negatively correlated with fractional anisotropy, a measure of structural integrity, in the internal capsule, fornix, pons, and corpus callosum. Brain concentrations of lactate, a neurochemical closely linked with astrocytes, were also weakly, but positively associated with tremors. These findings are the first documented results suggesting that chronic oral exposure to DA at concentrations near the current human regulatory limit are related to structural and chemical changes in the adult primate brain.
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Affiliation(s)
- Rebekah Petroff
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA.
| | - Todd Richards
- Department of Radiology, University of Washington, Seattle, WA, USA; Center on Human Development and Disability, Seattle, WA, USA
| | - Brenda Crouthamel
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA
| | - Noelle McKain
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA
| | - Courtney Stanley
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA
| | - Kimberly S Grant
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA; Center on Human Development and Disability, Seattle, WA, USA
| | - Sara Shum
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA
| | - Jing Jing
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA
| | - Nina Isoherranen
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA
| | - Thomas M Burbacher
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA; Center on Human Development and Disability, Seattle, WA, USA; Infant Primate Research Laboratory, Washington National Primate Research Center, Seattle, WA, USA
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194
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Bartalini A, Muñoz-Arnanz J, Marsili L, Mazzariol S, Fossi MC, Jiménez B. Evaluation of PCDD/Fs, dioxin-like PCBs and PBDEs in sperm whales from the Mediterranean Sea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:1417-1425. [PMID: 30759580 DOI: 10.1016/j.scitotenv.2018.10.436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/31/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
Numerous studies to date have reported concentrations of Persistent Organic Pollutants (POPs) in different marine mammal species worldwide. Yet data on sperm whales are scarce from rich and unique biodiverse areas such as the Mediterranean Sea. This work aimed to assess levels of dioxin-like polychlorinated biphenyls (dl-PCBs), polybrominated diphenyl ethers (PBDEs), and polychlorodibenzo-p-dioxins and furans (PCDD/Fs) in blubber of sperm whales stranded along the Italian coast between 2008 and 2016. POP mean concentrations (dl-PCBs: 6410 ng/g l.w.; PBDEs: 612 ng/g l.w.; PCDD/Fs: 57.8 pg/g l.w.) were mostly in line with what has been previously reported on the same species in the Mediterranean environment and tended to be higher than those reported from other geographical regions. The relative abundance followed the order dl-PCBs > PBDEs ≫ PCDD/Fs. Interestingly, the non-ortho dl-PCB pattern (126 > 169 > 77) was similar to that described in other studies worldwide and different from what is described in its main prey. This could be linked to particular metabolic activities in sperm whales against these highly toxic contaminants. Total TEQs ranged from 275 to 987 pg/g l.w. and showed the pattern Σnon-ortho-dl-PCBs > Σortho-dl-PCBs > PCDDs > PCDFs, with PCBs' contribution about 96%. These findings highlight the high abundance of PCBs still found in the Mediterranean environment despite having been banned for decades. All sperm whales analyzed in this study surpassed the threshold of 210 pg WHO-TEQ/g l.w. proposed as starting point of immunosuppression in harbour seals; a level of contamination that may have contributed to an impairment of their immune system.
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Affiliation(s)
- A Bartalini
- Department of Environmental, Earth and Physical Sciences, University of Siena, Via Mattioli 4, Siena, Italy
| | - J Muñoz-Arnanz
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, CSIC. Juan de la Cierva, 3, 28006 Madrid, Spain.
| | - L Marsili
- Department of Environmental, Earth and Physical Sciences, University of Siena, Via Mattioli 4, Siena, Italy
| | - S Mazzariol
- Department of Public Health, Comparative Pathology and Veterinary Hygiene, University of Padova, Viale dell'Università 16, 35020 Legnaro, PD, Italy
| | - M C Fossi
- Department of Environmental, Earth and Physical Sciences, University of Siena, Via Mattioli 4, Siena, Italy
| | - B Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, CSIC. Juan de la Cierva, 3, 28006 Madrid, Spain
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195
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Muñoz-Arnanz J, Chirife AD, Galletti Vernazzani B, Cabrera E, Sironi M, Millán J, Attard CRM, Jiménez B. First assessment of persistent organic pollutant contamination in blubber of Chilean blue whales from Isla de Chiloé, southern Chile. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:1521-1528. [PMID: 30308837 DOI: 10.1016/j.scitotenv.2018.09.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/04/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
Persistent organic pollutants (POPs) were assessed for the first time in blue whales from the South Pacific Ocean. Concentrations of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), hexachlorobenzene (HCB) and dichlorodiphenyltrichloroethane and its main metabolites (DDTs), were determined in 40 blubber samples from 36 free-ranging individuals and one stranded, dead animal along the coast of southern Chile between 2011 and 2013. PCBs were the most abundant pollutants (2.97-975 ng/g l.w.), followed by DDTs (3.50-537 ng/g l.w.), HCB (nd-77.5 ng/g l.w.) and PBDEs (nd-33.4 ng/g l.w). There was evidence of differences between sexes, with lower loads in females potentially due to pollutants passing to calves. POP concentrations were higher in specimens sampled in 2013; yet, between-year differences were only statistically significant for HCB and PBDEs. Lower chlorinated (penta > tetra > tri) and brominated (tetra > tri) congeners were the most prevalent among PCBs and PBDEs, respectively, mostly in agreement with findings previously reported in blue and other baleen whales. The present study provides evidence of lower levels of contamination by POPs in eastern South Pacific blue whales in comparison to those reported for the Northern Hemisphere.
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Affiliation(s)
- J Muñoz-Arnanz
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Juan de la Cierva 3, Madrid, Spain.
| | - A D Chirife
- Facultad de Ciencias de la Vida, Universidad Andres Bello, República 252, Santiago, Chile
| | - B Galletti Vernazzani
- Centro de Conservación Cetacea (CCC), Casilla 19178 Correo Alonso de Cordoba, Santiago, Chile
| | - E Cabrera
- Centro de Conservación Cetacea (CCC), Casilla 19178 Correo Alonso de Cordoba, Santiago, Chile
| | - M Sironi
- Instituto de Conservación de Ballenas, O'Higgins 4380, 1429 Buenos Aires, Argentina
| | - J Millán
- Facultad de Ciencias de la Vida, Universidad Andres Bello, República 252, Santiago, Chile
| | - C R M Attard
- Molecular Ecology Lab, College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia; Cetacean Ecology, Behaviour and Evolution Lab, College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - B Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Juan de la Cierva 3, Madrid, Spain
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196
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Microplastics in marine mammals stranded around the British coast: ubiquitous but transitory? Sci Rep 2019; 9:1075. [PMID: 30705316 PMCID: PMC6355900 DOI: 10.1038/s41598-018-37428-3] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 11/30/2018] [Indexed: 01/24/2023] Open
Abstract
Plastic pollution represents a pervasive and increasing threat to marine ecosystems worldwide and there is a need to better understand the extent to which microplastics (<5 mm) are ingested by high trophic-level taxa, such as marine mammals. Here, we perform a comprehensive assessment by examining whole digestive tracts of 50 individuals from 10 species whilst operating strict contamination controls. Microplastics were ubiquitous with particles detected in every animal examined. The relatively low number per animal (mean = 5.5) suggests these particles are transitory. Stomachs, however, were found to contain a greater number than intestines, indicating a potential site of temporary retention. The majority of particles were fibres (84%) while the remaining 16% was fragments. Particles were mainly blue and black (42.5% and 26.4%) in colour and Nylon was the most prevalent (60%) polymer type. A possible relationship was found between the cause of death category and microplastic abundance, indicating that animals that died due to infectious diseases had a slightly higher number of particles than those that died of trauma and other drivers of mortality. It is not possible, however, to draw any firm conclusions on the potential biological significance of this observation and further research is required to better understand the potential chronic effects of microplastic exposure on animal health, particularly as marine mammals are widely considered important sentinels for the implications of pollution for the marine environment.
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197
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Effects of oral domoic acid exposure on maternal reproduction and infant birth characteristics in a preclinical nonhuman primate model. Neurotoxicol Teratol 2019; 72:10-21. [PMID: 30615984 DOI: 10.1016/j.ntt.2019.01.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/23/2018] [Accepted: 01/03/2019] [Indexed: 11/23/2022]
Abstract
Domoic Acid (DA) is a naturally-occurring excitotoxin, produced by marine algae, which can bioaccumulate in shellfish and finfish. The consumption of seafood contaminated with DA is associated with gastrointestinal illness that, in the case of high DA exposure, can evolve into a spectrum of responses ranging from agitation to hallucinations, memory loss, seizures and coma. Because algal blooms that produce DA are becoming more widespread and very little is known about the dangers of chronic, low-dose exposure, we initiated a preclinical study focused on the reproductive and developmental effects of DA in a nonhuman primate model. To this end, 32 adult female Macaca fascicularis monkeys were orally exposed to 0, 0.075 or 0.15 mg/kg/day DA on a daily basis, prior to and during pregnancy. Females were bred to non-exposed males and infants were evaluated at birth. Results from this study provided no evidence of changes in DA plasma concentrations with chronic exposure. DA exposure was not associated with reproductive toxicity or adverse changes in the physical characteristics of newborns. However, in an unanticipated finding, our clinical observations revealed the presence of subtle neurological effects in the form of intentional tremors in the exposed adult females. While females in both dose groups displayed increased tremoring, the effect was dose-dependent and observed at a higher rate in females exposed to 0.15 mg/kg/day. These results demonstrate that chronic, low-level exposure to DA is associated with injury to the adult CNS and suggest that current regulatory guidelines designed to protect human health may not be adequate for high-frequency shellfish consumers.
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198
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Pugliares-Bonner K, McKenna K, Sette L, Niemeyer M, Tlusty M. Prevalence of alopecia in gray seals Halichoerus grypus atlantica in Massachusetts, USA, 2004-2013. DISEASES OF AQUATIC ORGANISMS 2018; 131:167-176. [PMID: 30459289 DOI: 10.3354/dao03295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
There has been an increase in the presence of alopecia among gray seals Halichoerus grypus atlantica in Massachusetts, USA. To understand the prevalence and describe the presentation of this condition, data records and photographs of 10070 gray seals from 2004-2013 were reviewed; there were sufficient data to confidently assess the presence or absence of alopecia in 2134 seals. Mild hair loss presented in multifocal patches with minimal to no skin lesions or erythema. In severe cases, alopecia was concentrated over the dorsal head, neck, and shoulders and extended down the ventrum, affecting >50% of the body. Associated skin lesions and erythema were often present. Alopecia was documented in 7.1% of the surveyed seals, and was centered in Nantucket. Alopecia was more prevalent in stranded/sighted animals in spring and summer, with 81% of cases documented from April to July. There was no sex bias, and weanlings were the most affected age class (38%). The etiology for alopecia in Massachusetts gray seals is unknown. Possible causes of alopecia in wildlife are infectious disease, nutritional deficiencies, endocrinopathies, or chronic physiologic stress. High population density around Nantucket may escalate intraspecific competition for resources, which may indirectly lead to stress-induced immunosuppression or nutritional deficiencies. Crowded haul-out sites increase the opportunity for disease transmission. The weanling age class may be prone to alopecia due to naïve immune systems and inexperienced foraging capabilities. Diagnostic sample collection from gray seals will be required to characterize the etiology, pathogenesis, and significance of alopecia in this population.
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199
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Khudyakov JI, Deyarmin JS, Hekman RM, Pujade Busqueta L, Maan R, Mody MJ, Banerjee R, Crocker DE, Champagne CD. A sample preparation workflow for adipose tissue shotgun proteomics and proteogenomics. Biol Open 2018; 7:bio.036731. [PMID: 30361411 PMCID: PMC6262853 DOI: 10.1242/bio.036731] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Animals with large adipose stores, such as marine mammals, may provide insights into the evolution and function of this multifunctional tissue in health and disease. In the absence of sequenced genomes, molecular information can be rapidly obtained by proteomics and transcriptomics, but their application to adipose tissue is hindered by low nucleic acid and protein yields. We sequenced and compared proteomes isolated from the blubber of four elephant seals using phenol and guanidine thiocyanate (Qiazol) or detergent (sodium deoxycholate) buffer. Qiazol recovered more subcellular proteins such as metabolic enzymes, in addition to extracting RNA, facilitating proteogenomic analyses of small lipid-rich tissue biopsies. We also compared proteomics data analysis platforms and found that de novo peptide sequencing improved protein identification sensitivity compared to database search alone. We report sample preparation and data analysis workflows for proteogenomics and a proteome of elephant seal blubber containing 2678 proteins, including many of interest for further functional studies. This article has an associated First Person interview with the first author of the paper. Summary: Proteins that are compatible with shotgun proteomics can be isolated from small amounts of adipose tissue at the same time as RNA, facilitating proteogenomics studies in non-model animals.
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Affiliation(s)
- Jane I Khudyakov
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA .,Conservation and Biological Research Program, National Marine Mammal Foundation, San Diego, CA, USA
| | - Jared S Deyarmin
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA
| | - Ryan M Hekman
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA
| | | | - Rasool Maan
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA
| | - Melony J Mody
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA
| | - Reeti Banerjee
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA
| | - Daniel E Crocker
- Department of Biology, Sonoma State University, Rohnert Park, CA, USA
| | - Cory D Champagne
- Conservation and Biological Research Program, National Marine Mammal Foundation, San Diego, CA, USA
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200
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Fair PA, White ND, Wolf B, Arnott SA, Kannan K, Karthikraj R, Vena JE. Persistent organic pollutants in fish from Charleston Harbor and tributaries, South Carolina, United States: A risk assessment. ENVIRONMENTAL RESEARCH 2018; 167:598-613. [PMID: 30172193 PMCID: PMC6262760 DOI: 10.1016/j.envres.2018.08.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/25/2018] [Accepted: 08/02/2018] [Indexed: 05/02/2023]
Abstract
Fish consumption is an important route of exposure to persistent organic pollutants (POPs) in dolphins as well as humans. In order to assess the potential risks associated with these contaminants, 39 whole fish and 37 fillets from fish representing species consumed by dolphins and humans captured from Charleston Harbor and tributaries, South Carolina, USA, were measured for a suite of POPs. Polychlorinated biphenyls (PCBs) were the predominant contaminant with concentrations ranging from 5.02 to 232.20 ng/g in whole fish and 5.42-131.95 ng/g in fillets (weight weight ww) followed by total organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs). Total POPs levels varied by location and species with general trends indicating significantly higher levels in fish from the Cooper (93.4 ng/g ww) and Ashley Rivers (56.2 ng/g ww) compared to Charleston Harbor (31.6 ng/g ww). Mullet and spot were found to have significantly higher PCBs, OCPs and total POPs, 2-3 times higher than red drum; mullet were also significantly higher in OCPs compared to seatrout. PCB concentrations in whole fish and fillets exceeded EPA human screening values for cancer risk in all fish sampled. For PCBs in fillets, all samples had values of maximum allowable meals per month that were less than the EPA, FDA guidelines for recommended fish meals per month, suggesting lower (more stringent) allowable fish meals per month. All fish exceeded PBDE wildlife values and all fish except two exceeded the level where 95% of the dolphin population would have tissue levels below the health effect threshold. Considering that POP concentrations in fish potentially consumed by humans exceed human health effect thresholds levels, consumption advisories should be considered as a prudent public health measure.
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Affiliation(s)
- Patricia A Fair
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29412, USA; NOAA's Ocean Service, National Centers for Coastal Ocean Science, Charleston, SC 29412, USA.
| | - Natasha D White
- NOAA's Ocean Service, National Centers for Coastal Ocean Science, Charleston, SC 29412, USA
| | - Beth Wolf
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29412, USA
| | - Stephen A Arnott
- Marine Resources Research Institute, South Carolina Department of Natural Resources, Charleston, SC 29412, USA
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Empire State Plaza, PO Box 509, Albany, NY 12201-0509, USA
| | - Rajendiran Karthikraj
- Wadsworth Center, New York State Department of Health, Empire State Plaza, PO Box 509, Albany, NY 12201-0509, USA
| | - John E Vena
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29412, USA
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