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Hinton TG, Anderson D, Bæk E, Baranwal VC, Beasley JC, Bontrager HL, Broggio D, Brown J, Byrne ME, Gerke HC, Ishiniwa H, Lance SL, Lind OC, Love CN, Nagata H, Nanba K, Okuda K, Salbu B, Shamovich D, Skuterud L, Trompier F, Webster SC, Zabrotski V. Fundamentals of wildlife dosimetry and lessons learned from a decade of measuring external dose rates in the field. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2024; 278:107472. [PMID: 38905881 DOI: 10.1016/j.jenvrad.2024.107472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/23/2024]
Abstract
Methods for determining the radiation dose received by exposed biota require major improvements to reduce uncertainties and increase precision. We share our experiences in attempting to quantify external dose rates to free-ranging wildlife using GPS-coupled dosimetry methods. The manuscript is a primer on fundamental concepts in wildlife dosimetry in which the complexities of quantifying dose rates are highlighted, and lessons learned are presented based on research with wild boar and snakes at Fukushima, wolves at Chornobyl, and reindeer in Norway. GPS-coupled dosimeters produced empirical data to which numerical simulations of external dose using computer software were compared. Our data did not support a standing paradigm in risk analyses: Using averaged soil contaminant levels to model external dose rates conservatively overestimate the dose to individuals within a population. Following this paradigm will likely lead to misguided recommendations for risk management. The GPS-dosimetry data also demonstrated the critical importance of how modeled external dose rates are impacted by the scale at which contaminants are mapped. When contaminant mapping scales are coarse even detailed knowledge about each animal's home range was inadequate to accurately predict external dose rates. Importantly, modeled external dose rates based on a single measurement at a trap site did not correlate to actual dose rates measured on free ranging animals. These findings provide empirical data to support published concerns about inadequate dosimetry in much of the published Chernobyl and Fukushima dose-effects research. Our data indicate that a huge portion of that literature should be challenged, and that improper dosimetry remains a significant source of controversy in radiation dose-effect research.
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Affiliation(s)
- Thomas G Hinton
- Institute of Environmental Radioactivity, Fukushima University, Fukushima, Japan; CERAD CoE, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway.
| | - Donovan Anderson
- Institute of Radiation Emergency Medicine, Hirosaki University, Aomori, Japan.
| | - Edda Bæk
- Norwegian Radiation and Nuclear Safety Authority, Østerås, Norway.
| | | | - James C Beasley
- Savannah River Ecology Laboratory, University of Georgia, Aiken, SC, USA.
| | - Helen L Bontrager
- Savannah River Ecology Laboratory, University of Georgia, Aiken, SC, USA.
| | - David Broggio
- Institute for Radiation Protection and Nuclear Safety, Fontenay-aux-Roses, France.
| | - Justin Brown
- Norwegian Radiation and Nuclear Safety Authority, Østerås, Norway.
| | - Michael E Byrne
- School of Natural Resources, University of Missouri, Columbia, MO, USA.
| | - Hannah C Gerke
- Savannah River Ecology Laboratory, University of Georgia, Aiken, SC, USA.
| | - Hiroko Ishiniwa
- Institute of Environmental Radioactivity, Fukushima University, Fukushima, Japan.
| | - Stacey L Lance
- Savannah River Ecology Laboratory, University of Georgia, Aiken, SC, USA.
| | - Ole C Lind
- CERAD CoE, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway.
| | - Cara N Love
- Savannah River Ecology Laboratory, University of Georgia, Aiken, SC, USA.
| | - Hiroko Nagata
- Institute of Environmental Radioactivity, Fukushima University, Fukushima, Japan.
| | - Kenji Nanba
- Institute of Environmental Radioactivity, Fukushima University, Fukushima, Japan.
| | - Kei Okuda
- Faculty of Human Environmental Sciences, Hiroshima Shudo University, Hiroshima, Japan.
| | - Brit Salbu
- CERAD CoE, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway.
| | | | | | - François Trompier
- Institute for Radiation Protection and Nuclear Safety, Fontenay-aux-Roses, France.
| | - Sarah C Webster
- Savannah River Ecology Laboratory, University of Georgia, Aiken, SC, USA.
| | - Viachaslau Zabrotski
- Republican Center for Hydrometeorology, Control of Radioactive Contamination and Environmental Monitoring (Belhydromet), Minsk, Belarus.
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2
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Dujon AM, Ujvari B, Tissot S, Meliani J, Rieu O, Stepanskyy N, Hamede R, Tokolyi J, Nedelcu A, Thomas F. The complex effects of modern oncogenic environments on the fitness, evolution and conservation of wildlife species. Evol Appl 2024; 17:e13763. [PMID: 39100750 PMCID: PMC11294924 DOI: 10.1111/eva.13763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 04/16/2024] [Accepted: 07/18/2024] [Indexed: 08/06/2024] Open
Abstract
Growing evidence indicates that human activities are causing cancer rates to rise in both human and wildlife populations. This is due to the inability of ancestral anti-cancer defences to cope with modern environmental risks. The evolutionary mismatch between modern oncogenic risks and evolved cancer defences has far-reaching effects on various biological aspects at different timeframes, demanding a comprehensive study of the biology and evolutionary ecology of the affected species. Firstly, the increased activation of anti-cancer defences leads to excessive energy expenditure, affecting other biological functions and potentially causing health issues like autoimmune diseases. Secondly, tumorigenesis itself can impact important fitness-related parameters such as competitiveness, predator evasion, resistance to parasites, and dispersal capacity. Thirdly, rising cancer risks can influence the species' life-history traits, often favoring early reproduction to offset fitness costs associated with cancer. However, this strategy has its limits, and it may not ensure the sustainability of the species if cancer risks continue to rise. Lastly, some species may evolve additional anti-cancer defences, with uncertain consequences for their biology and future evolutionary path. In summary, we argue that the effects of increased exposure to cancer-causing substances on wildlife are complex, ranging from immediate responses to long-term evolutionary changes. Understanding these processes, especially in the context of conservation biology, is urgently needed.
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Affiliation(s)
- Antoine M. Dujon
- School of Life and Environmental SciencesDeakin UniversityWaurn PondsVictoriaAustralia
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de MontpellierMontpellierFrance
| | - Beata Ujvari
- School of Life and Environmental SciencesDeakin UniversityWaurn PondsVictoriaAustralia
| | - Sophie Tissot
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de MontpellierMontpellierFrance
| | - Jordan Meliani
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de MontpellierMontpellierFrance
| | - Océane Rieu
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de MontpellierMontpellierFrance
| | - Nikita Stepanskyy
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de MontpellierMontpellierFrance
| | - Rodrigo Hamede
- School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Jácint Tokolyi
- Department of Evolutionary Zoology, MTA‐DE “Momentum” Ecology, Evolution and Developmental Biology Research GroupUniversity of DebrecenDebrecenHungary
| | - Aurora Nedelcu
- Department of BiologyUniversity of new BrunswickFrederictonNew BrunswickCanada
| | - Frédéric Thomas
- School of Life and Environmental SciencesDeakin UniversityWaurn PondsVictoriaAustralia
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Wilson C, Adams GG, Patel P, Windham K, Ennis C, Caffrey E. A Review of Recent Low-dose Research and Recommendations for Moving Forward. HEALTH PHYSICS 2024; 126:386-396. [PMID: 38568156 DOI: 10.1097/hp.0000000000001808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
ABSTRACT The linear no-threshold (LNT) model has been the regulatory "law of the land" for decades. Despite the long-standing use of LNT, there is significant ongoing scientific disagreement on the applicability of LNT to low-dose radiation risk. A review of the low-dose risk literature of the last 10 y does not provide a clear answer, but rather the body of literature seems to be split between LNT, non-linear risk functions (e.g., supra- or sub-linear), and hormetic models. Furthermore, recent studies have started to explore whether radiation can play a role in the development of several non-cancer effects, such as heart disease, Parkinson's disease, and diabetes, the mechanisms of which are still being explored. Based on this review, there is insufficient evidence to replace LNT as the regulatory model despite the fact that it contributes to public radiophobia, unpreparedness in radiation emergency response, and extreme cleanup costs both following radiological or nuclear incidents and for routine decommissioning of nuclear power plants. Rather, additional research is needed to further understand the implications of low doses of radiation. The authors present an approach to meaningfully contribute to the science of low-dose research that incorporates machine learning and Edisonian approaches to data analysis.
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Affiliation(s)
- Charles Wilson
- University of Alabama at Birmingham, School of Health Professions, Clinical and Diagnostic Sciences, Health Physics Program
| | - Grace G Adams
- Gryphon Scientific, LLC, 6930 Carrol Ave., Suite 810, Takoma Park, MD 20912
| | - Pooja Patel
- University of Alabama at Birmingham, School of Health Professions, Clinical and Diagnostic Sciences, Health Physics Program
| | - Kiran Windham
- University of Alabama at Birmingham, School of Health Professions, Clinical and Diagnostic Sciences, Health Physics Program
| | - Colby Ennis
- University of Alabama at Birmingham, School of Health Professions, Clinical and Diagnostic Sciences, Health Physics Program
| | - Emily Caffrey
- University of Alabama at Birmingham, School of Health Professions, Clinical and Diagnostic Sciences, Health Physics Program
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4
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Gatti M, Belli M, De Rubeis M, Tokita S, Ikema H, Yamashiro H, Fujishima Y, Anderson D, Goh VST, Shinoda H, Nakata A, Fukumoto M, Miura T, Nottola SA, Macchiarelli G, Palmerini MG. Ultrastructural Analysis of Large Japanese Field Mouse ( Apodemus speciosus) Testes Exposed to Low-Dose-Rate (LDR) Radiation after the Fukushima Nuclear Power Plant Accident. BIOLOGY 2024; 13:239. [PMID: 38666851 PMCID: PMC11048324 DOI: 10.3390/biology13040239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024]
Abstract
Since the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, great attention has been paid to the impact of chronic low-dose-rate (LDR) radiation exposure on biological systems. The reproductive system is sensitive to radiation, with implications connected to infertility. We investigated the testis ultrastructure of the wild large Japanese field mouse (Apodemus speciosus) from three areas contaminated after the FDNPP accident, with different levels of LDR radiation (0.29 µSv/h, 5.11 µSv/h, and 11.80 µSv/h). Results showed good preservation of the seminiferous tubules, comparable to the unexposed animals (controls), except for some ultrastructural modifications. Increases in the numerical density of lipid droplet clusters in spermatogenic cells were found at high levels of LDR radiation, indicating an antioxidant activity rising due to radiation recovery. In all groups, wide intercellular spaces were found between spermatogenic cells, and cytoplasmic vacuolization increased at intermediate and high levels and vacuolated mitochondria at the high-level. However, these findings were also related to the physiological dynamics of spermatogenesis. In conclusion, the testes of A. speciosus exposed to LDR radiation associated with the FDNPP accident showed a normal spermatogenesis, with some ultrastructural changes. These outcomes may add information on the reproductive potential of mammals chronically exposed to LDR radiation.
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Affiliation(s)
- Marta Gatti
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University, 00161 Rome, Italy; (M.G.); (M.D.R.)
| | - Manuel Belli
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy;
| | - Mariacarla De Rubeis
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University, 00161 Rome, Italy; (M.G.); (M.D.R.)
| | - Syun Tokita
- Graduate School of Science and Technology, Niigata University, Niigata 959-2181, Japan
| | - Hikari Ikema
- Graduate School of Science and Technology, Niigata University, Niigata 959-2181, Japan
| | - Hideaki Yamashiro
- Graduate School of Science and Technology, Niigata University, Niigata 959-2181, Japan
| | - Yohei Fujishima
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Aomori 036-8564, Japan (D.A.); (T.M.)
| | - Donovan Anderson
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Aomori 036-8564, Japan (D.A.); (T.M.)
| | - Valerie Swee Ting Goh
- Department of Radiobiology, Singapore Nuclear Research and Safety Initiative, National University of Singapore, Singapore 138602, Singapore
| | - Hisashi Shinoda
- Graduate School of Dentistry, Tohoku University, Sendai 980-8575, Japan
| | - Akifumi Nakata
- Department of Life Science, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Hokkaido 006-8585, Japan
| | - Manabu Fukumoto
- RIKEN Center for Advanced Intelligence Project, Pathology Informatics Team, Tokyo 103-0027, Japan;
| | - Tomisato Miura
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Aomori 036-8564, Japan (D.A.); (T.M.)
| | - Stefania Annarita Nottola
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University, 00161 Rome, Italy; (M.G.); (M.D.R.)
| | - Guido Macchiarelli
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Maria Grazia Palmerini
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
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Lettoof DC, Nguyen TV, Richmond WR, Nice HE, Gagnon MM, Beale DJ. Bioaccumulation and metabolic impact of environmental PFAS residue on wild-caught urban wetland tiger snakes (Notechis scutatus). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165260. [PMID: 37400030 DOI: 10.1016/j.scitotenv.2023.165260] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/05/2023] [Accepted: 06/30/2023] [Indexed: 07/05/2023]
Abstract
PFAS contamination of urban waters is widespread but understanding the biological impact of its accumulation is limited to humans and common ecotoxicological model organisms. Here, we combine PFAS exposure and bioaccumulation patterns with whole organism responses and omics-based ecosurveillance methods to investigate the potential impacts of PFAS on a top predator of wetlands, the tiger snake (Notechis scutatus). Tiger snakes (18 male and 17 female) were collected from four wetlands with varying PFAS chemical profiles and concentrations in Perth, Western Australia. Tiger snake livers were tested for 28 known PFAS compounds, and Σ28PFAS in liver tissues ranged between 322 ± 193 μg/kg at the most contaminated site to 1.31 ± 0.86 μg/kg at the least contaminated site. The dominant PFAS compound detected in liver tissues was PFOS. Lower body condition was associated with higher liver PFAS, and male snakes showed signs of high bioaccumulation whereas females showed signs of maternal offloading. Biochemical profiles of snake muscle, fat (adipose tissue), and gonads were analysed using a combination of liquid chromatography triple quadrupole (QqQ) and quadrupole time-of-flight (QToF) mass spectrometry methodologies. Elevated PFAS was associated with enriched energy production and maintenance pathways in the muscle, and had weak associations with energy-related lipids in the fat tissue, and lipids associated with cellular genesis and spermatogenesis in the gonads. These findings demonstrate the bioavailability of urban wetland PFAS in higher-order reptilian predators and suggest a negative impact on snake health and metabolic processes. This research expands on omics-based ecosurveillance tools for informing mechanistic toxicology and contributes to our understanding of the impact of PFAS residue on wildlife health to improve risk management and regulation.
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Affiliation(s)
- D C Lettoof
- School of Molecular and Life Sciences, Curtin University, Brand Drive, Bentley, WA 6102, Australia; Environment, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Centre for Environment and Life Sciences, Floreat, WA 6014, Australia.
| | - T V Nguyen
- Environment, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Ecosciences Precinct, Dutton Park, Qld 4102, Australia; NTT Institute of High Technology, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 700000, Viet Nam
| | - W R Richmond
- Department of Water and Environmental Regulation, Government of Western Australia, Joondalup, WA 6027, Australia
| | - H E Nice
- Department of Water and Environmental Regulation, Government of Western Australia, Joondalup, WA 6027, Australia
| | - M M Gagnon
- School of Molecular and Life Sciences, Curtin University, Brand Drive, Bentley, WA 6102, Australia
| | - D J Beale
- Environment, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Ecosciences Precinct, Dutton Park, Qld 4102, Australia
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Mitsuyasu Y, Oka T, Takahashi A, Kino Y, Okutsu K, Sekine T, Yamashita T, Shimizu Y, Chiba M, Suzuki T, Osaka K, Sasaki K, Suzuki M, Fukumoto M, Shinoda H. Estimation of external dose for wild Japanese macaques captured in Fukushima prefecture: decomposition of electron spin resonance spectrum. RADIATION PROTECTION DOSIMETRY 2023; 199:1620-1625. [PMID: 37721074 DOI: 10.1093/rpd/ncad146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 03/28/2023] [Accepted: 04/05/2023] [Indexed: 09/19/2023]
Abstract
The signal intensities of CO2- radicals in teeth can be utilised as an individual indicator of the cumulative external dose for animals. To accurately determine the external dose, it is desirable to analyse the CO2- radical intensity and improve its detection limit. We recently reported a dose-response in the range of 0-200 mGy and estimated the absorbed dose for seven wild Japanese macaques captured in/around the related areas to the Fukushima Daiichi Nuclear Power Plant accident. Herein, for further improvement of this method, we examined the electron spin resonance spectra of the teeth of these seven and an additional four macaques captured in Fukushima by applying two spectrum-decomposition algorithms.
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Affiliation(s)
- Yusuke Mitsuyasu
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Toshitaka Oka
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Atsushi Takahashi
- Tohoku University Hospital, Tohoku University, Sendai, Miyagi 980-8574, Japan
| | - Yasushi Kino
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Kenichi Okutsu
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Tsutomu Sekine
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Takuma Yamashita
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
- Institute for Excellence in Higher Education, Tohoku University, Sendai, Miyagi 980-8576, Japan
| | - Yoshinaka Shimizu
- Graduate School of Dentistry, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Mirei Chiba
- Graduate School of Dentistry, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Toshihiko Suzuki
- Graduate School of Dentistry, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Ken Osaka
- Graduate School of Dentistry, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Keiichi Sasaki
- Graduate School of Dentistry, Tohoku University, Sendai, Miyagi 980-8575, Japan
| | - Masatoshi Suzuki
- International Research Institute of Disaster Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
| | - Manabu Fukumoto
- International Research Institute of Disaster Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
- Center for Advanced Intelligence Project, RIKEN, Nihonbashi, Tokyo 103-0027, Japan
| | - Hisashi Shinoda
- Graduate School of Dentistry, Tohoku University, Sendai, Miyagi 980-8575, Japan
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Guirandy N, Armant O, Frelon S, Pierron F, Geffroy B, Daffe G, Houdelet C, Gonzalez P, Simon O. Altered ovarian transcriptome is linked to early mortality and abnormalities in zebrafish embryos after maternal exposure to gamma irradiation. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 262:106660. [PMID: 37633173 DOI: 10.1016/j.aquatox.2023.106660] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 08/03/2023] [Accepted: 08/10/2023] [Indexed: 08/28/2023]
Abstract
Recent laboratory studies focusing on multigenerational approach demonstrated drastic phenotypic effects after chronic fish irradiation exposure. No irradiation effect at phenotypic scale was observed for F0 (reproductive performances) while early mortality and malformations were observed in F1 offspring whether they were irradiated or not. The objective was to study molecular mechanisms likely to be involved in these phenotypic effects induced by parental irradiation. Thus, F0 adult zebrafish were irradiated for ten days until reproduction and maternal involvement in offspring development was assessed. Levels of maternal provided cortisol and vitellogenin, needed for embryo development, were not impacted by irradiation. However, maternal transcriptome highlighted irradiation effect on processes involved in oocyte development, as well as on essential maternal factors needed for offspring development. Therefore, this study highlighted the importance of parental exposure on offspring fate and of the importance of multigenerational exposure in risk assessment.
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Affiliation(s)
- Noëmie Guirandy
- IRSN/PSE-ENV/SRTE/LECO, Centre de Cadarache-B.P. 3, Bat 183, St Paul Lez Durance 13115, France.
| | - Olivier Armant
- IRSN/PSE-ENV/SRTE/LECO, Centre de Cadarache-B.P. 3, Bat 183, St Paul Lez Durance 13115, France
| | - Sandrine Frelon
- IRSN/PSE-ENV/SRTE/LECO, Centre de Cadarache-B.P. 3, Bat 183, St Paul Lez Durance 13115, France
| | - Fabien Pierron
- University Bordeaux, CNRS, EPOC, EPHE, UMR 5805, Pessac F-33600, France
| | - Benjamin Geffroy
- MARBEC, University Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
| | - Guillemine Daffe
- University Bordeaux, CNRS, EPOC, EPHE, UMR 5805, Pessac F-33600, France
| | - Camille Houdelet
- MARBEC, University Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
| | - Patrice Gonzalez
- University Bordeaux, CNRS, EPOC, EPHE, UMR 5805, Pessac F-33600, France
| | - Olivier Simon
- IRSN/PSE-ENV/SRTE/LECO, Centre de Cadarache-B.P. 3, Bat 183, St Paul Lez Durance 13115, France
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8
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Dillon MN, Thomas R, Mousseau TA, Betz JA, Kleiman NJ, Reiskind MOB, Breen M. Population dynamics and genome-wide selection scan for dogs in Chernobyl. Canine Med Genet 2023; 10:1. [PMID: 36890600 PMCID: PMC9993684 DOI: 10.1186/s40575-023-00124-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/16/2023] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND Natural and anthropogenic disasters can have long-lasting impacts on the genetics and structure of impacted populations. The 1986 Chernobyl Nuclear Power Plant disaster led to extensive contamination of the local environment and the wildlife therein. Several ecological, environmental, and genetic studies reported various effects of this disaster on animal, insect, and plant species; however, little work has been done to investigate the genetics of the free-breeding dogs that occupy the Chernobyl Exclusion Zone (CEZ). RESULTS We define the population genetic structure of two groups of dogs that reside within the CEZ, one around the reactor site itself and another living within Chernobyl City. We found little evidence of gene flow and a significant degree of genetic differentiation between the two populations dogs, suggesting that these are two distinct populations despite occupying areas located just 16 km apart. With an FST-based outlier analysis, we then performed a genome-wide scan for evidence of directional selection within the dog populations. We found 391 outlier loci associated with genomic regions influenced by directional selection, from which we identified 52 candidate genes. CONCLUSIONS Our genome scan highlighted outlier loci within or near genomic regions under directional selection, possibly in response to the multi-generational exposure faced. In defining the population structure and identifying candidate genes for these dog populations, we take steps towards understanding how these types of prolonged exposures have impacted these populations.
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Affiliation(s)
- Megan N Dillon
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.,Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Rachael Thomas
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - Timothy A Mousseau
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | - Jennifer A Betz
- Visiting Veterinarians International, 9825 SE Tower Dr, Damascus, OR, USA
| | - Norman J Kleiman
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | | | - Matthew Breen
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA. .,Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA. .,Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, USA. .,Cancer Genetics, UNC Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA. .,Duke Cancer Institute, Duke University, Durham, NC, USA.
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9
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Karaer MC, Čebulj-Kadunc N, Snoj T. Stress in wildlife: comparison of the stress response among domestic, captive, and free-ranging animals. Front Vet Sci 2023; 10:1167016. [PMID: 37138925 PMCID: PMC10150102 DOI: 10.3389/fvets.2023.1167016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/30/2023] [Indexed: 05/05/2023] Open
Abstract
The stress response, which involves joint activity of the nervous and endocrine systems, is one of the basic adaptive mechanisms that ensures the survival of the individual. The activation of the sympathetic nervous system, the sympathetic-adrenal-medullary axis, and the hypothalamic-pituitary-adrenal axis enables organisms to respond to endogenous and exogenous challenges. Repeated short-term stress leads to long-term stress, which disrupts physiological homeostasis. Unlike domestic animals, wild animals are not protected from environmental and weather influences or treated for diseases. In addition, climate change, habitat fragmentation and loss, and urban stressors (such as light, noise and chemical pollution; xenobiotics; traffic; and buildings) affect individual wildlife and populations. In this review, we have attempted to depict the magnitude of the stress response in wildlife and related domestic animals as well as in captive and free-ranging animals. The intensity of the stress response can be estimated by determining the concentration of glucocorticoids in body fluids, tissues, and excreta. A comparison of results from different studies suggests that domestic animals have lower fecal and hair glucocorticoid concentrations than related wild animals. Additionally, fecal and hair glucocorticoid concentrations in captive animals are higher than in free-ranging animals of the same species. As there are limited data on this topic, we cannot draw definitive conclusions about glucocorticoid concentration and stress response. Further studies are needed to clarify these issues.
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Affiliation(s)
- Mina Cansu Karaer
- Food and Agriculture Vocational School, Çankiri Karatekin University, Çankiri, Türkiye
| | - Nina Čebulj-Kadunc
- Veterinary Faculty, Institute of Preclinical Sciences, University of Ljubljana, Gerbičeva, Ljubljana, Slovenia
| | - Tomaž Snoj
- Veterinary Faculty, Institute of Preclinical Sciences, University of Ljubljana, Gerbičeva, Ljubljana, Slovenia
- *Correspondence: Tomaž Snoj
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10
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Radiation dose and gene expression analysis of wild boar 10 years after the Fukushima Daiichi Nuclear Plant accident. Sci Rep 2022; 12:18653. [PMID: 36333381 PMCID: PMC9636247 DOI: 10.1038/s41598-022-21436-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 09/27/2022] [Indexed: 11/06/2022] Open
Abstract
The Fukushima Daiichi Nuclear Power Plant accident led to contamination with radioactive cesium in an extensive environment in Japan in 2011. We evaluated the concentration of radioactive cesium in the skeletal muscles of 22 wild boars and the expression of IFN-γ, TLR3, and CyclinG1 in the small intestine and compared them with those of wild boar samples collected from Hyogo prefecture. The average 137Cs radioactivity concentration in wild boars in the ex-evacuation zone was 470 Bq/kg. Most of samples still showed radioactivity concentration that exceeded the regulatory limit for foods, but the dose remarkably decreased compared with samples just after the accident. IFN-γ expression was significantly higher in wild boars in the ex-evacuation zone than in samples from Hyogo prefecture. TLR3 expression was also upregulated. CyclinG1 expression also tended to be high. Hence, wild boars might have received some effects of low-dose radiation, and immune cells were activated to some extent. However, pathological examination revealed no inflammatory cell infiltration or pathological damage in the small intestine of wild boars in the ex-evacuation area. Long-term monitoring would be necessary, but we consider that the living body responds appropriately to a stimulus from a contaminated environment.
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11
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Anderson D, Kaneko S, Harshman A, Okuda K, Takagi T, Chinn S, Beasley JC, Nanba K, Ishiniwa H, Hinton TG. Radiocesium accumulation and germline mutations in chronically exposed wild boar from Fukushima, with radiation doses to human consumers of contaminated meat. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 306:119359. [PMID: 35487469 DOI: 10.1016/j.envpol.2022.119359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
Genetic effects and radioactive contamination of large mammals, including wild boar (Sus scrofa), have been studied in Japan because of dispersal of radionuclides from the Fukushima Dai-ichi Nuclear Power Plant in 2011. Such studies have generally demonstrated a declining trend in measured radiocesium body burdens in wildlife. Estimating radiation exposure to wildlife is important to understand possible long-term impacts. Here, radiation exposure was evaluated in 307 wild boar inhabiting radioactively contaminated areas (50-8000 kBq m-2) in Fukushima Prefecture from 2016 to 2019, and genetic markers were examined to assess possible germline mutations caused by chronic radiation exposures to several generations of wild boar. Internal Cs activity concentrations in boar remained high in areas near the power plant with the highest concentration of 54 kBq kg-1 measured in 2019. Total dose rates to wild boar ranged from 0.02 to 36 μGy h-1, which was primarily attributed to external radiation exposure, and dose rates to the maximally exposed animals were above the generic no-effects benchmark of 10 μGy h-1. Using the estimated age of each animal, lifetime radiation doses ranged from <0.1 mGy to 700 mGy. Despite chronic exposures, the genetic analyses showed no significant accumulation of mutation events. Because wild boar is an occasional human dietary item in Japan, effective dose to humans from ingesting contaminated wild boar meat was calculated. Hypothetical consumption of contaminated wild boar meat from radioactively contaminated areas in Fukushima, at the per capita pork consumption rate (12.9 kg y-1), would result in an average effective annual dose of 0.9 mSv y-1, which is below the annual ingestion limit of 1 mSv y-1. Additionally, a consumption rate of about 1.4 kg y-1 of the most contaminated meat in this study would not exceed annual ingestion limits.
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Affiliation(s)
- Donovan Anderson
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori, Japan; Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, Tsukuba, Ibaraki, Japan.
| | - Shingo Kaneko
- Symbiotic Systems Science and Technology, Fukushima University, Fukushima City, Fukushima, Japan
| | - Amber Harshman
- Environmental Protection Services Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Kei Okuda
- Faculty of Human Environmental Studies, Hiroshima Shudo University, Hiroshima, Japan
| | - Toshihito Takagi
- Symbiotic Systems Science and Technology, Fukushima University, Fukushima City, Fukushima, Japan
| | - Sarah Chinn
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, SC, USA
| | - James C Beasley
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, SC, USA
| | - Kenji Nanba
- Institute of Environmental Radioactivity, Fukushima University, Fukushima City, Fukushima, Japan
| | - Hiroko Ishiniwa
- Institute of Environmental Radioactivity, Fukushima University, Fukushima City, Fukushima, Japan
| | - Thomas G Hinton
- Institute of Environmental Radioactivity, Fukushima University, Fukushima City, Fukushima, Japan; Centre for Environmental Radioactivity, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
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12
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Liu D, Li Z, Hou Z, Bao H, Luan X, Zhang P, Liang X, Gong S, Tian Y, Zhang D, She W, Yang F, Chen S, Nathan JR, Jiang G. Ecological relationships among habitat type, food nutrients, parasites and hormones in wild boar
Sus scrofa
during winter. WILDLIFE BIOLOGY 2022. [DOI: 10.1002/wlb3.01020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Dongqi Liu
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Zhaoyue Li
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Zhijun Hou
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Heng Bao
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Xue Luan
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Ping Zhang
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Xin Liang
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Shuang Gong
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Yumiao Tian
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Da Zhang
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Wen She
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Feifei Yang
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Shiyu Chen
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - James Roberts Nathan
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
| | - Guangshun Jiang
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry Univ. Harbin China
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