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Vyas NB, Henry PFP, Binkowski ŁJ, Hladik ML, Gross MS, Schroeder MA, Davis DM. Persistence of pesticide residues in weathered avian droppings. ENVIRONMENTAL RESEARCH 2024; 259:119475. [PMID: 38945513 DOI: 10.1016/j.envres.2024.119475] [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: 04/03/2024] [Revised: 06/02/2024] [Accepted: 06/20/2024] [Indexed: 07/02/2024]
Abstract
Avian droppings (combination of fecal matter and urates) provide a non-lethal and non-invasive matrix for measuring pesticide exposures. In the field, droppings may be collected days or weeks after excretion and the persistence of pesticide residues in weathered droppings is not known. Thus, we studied the effects of weathering on pesticide residues in droppings. Domestic chicken (Gallus gallus domesticus) hens were used as a representative species for Order Galliformes. We collected droppings from hens before they were exposed to the pesticides (reference or pre-dose droppings ). Thereafter, the hens were orally administered encapsulated wheat seeds coated with Raxil® PRO Shield (containing the active ingredients imidacloprid, prothioconazole, metalaxyl, and tebuconazole) for consecutive 7 days. During this time, their droppings were collected on days 3, 5, and 8 from the start of the exposure period (post-dose droppings ). The pre-dose and post-dose droppings were weathered for up to 30 days in autumn and spring in shrubsteppe habitat. Droppings were analyzed using HPLC coupled to triple quad LC/MS for parent compound and metabolite residues. No pesticide or its metabolite residues were detected in the weathered reference droppings. No parent pesticide compounds were detected in weathered post-dose droppings but imidacloprid metabolites, imidacloprid-5-hydroxy and imidacloprid-olefin, and the prothioconazole metabolite, desthio-prothioconazole, were detected in all post-dose weathered samples from both seasons. The active ingredients metalaxyl and tebuconazole and their metabolites were not detected in any of the samples. Our results suggest that, depending on the pesticide, its concentration, and the environmental conditions, residues of some pesticides can be detected in droppings weathered for at least 30 days. Knowledge of pesticide persistence in weathered droppings can help refine the quality and quantity of fecal samples that are collected for monitoring pesticide exposures to birds.
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Affiliation(s)
- Nimish B Vyas
- U.S. Geological Survey Eastern Ecological Science Center, 12100 Beech Forest Road, Laurel, MD, 20708, United States.
| | - Paula F P Henry
- U.S. Geological Survey Eastern Ecological Science Center, 12100 Beech Forest Road, Laurel, MD, 20708, United States.
| | - Łukasz J Binkowski
- University of the National Education Commission and Earth Sciences, Podchorążych 2 St., 30-084, Krakow, Poland.
| | - Michelle L Hladik
- U.S. Geological Survey, California Water Science Center, 6000 J St. Placer Hall, Sacramento, CA, 95819, United States.
| | - Michael S Gross
- U.S. Geological Survey, California Water Science Center, 6000 J St. Placer Hall, Sacramento, CA, 95819, United States.
| | - Michael A Schroeder
- Washington Department of Fish and Wildlife, P.O. Box 1077, Bridgeport, WA, 98813, United States.
| | - Dawn M Davis
- U.S. Fish and Wildlife Service, Wyoming Field Office, 334 Parsley Boulevard, Cheyenne, WY, 82007, United States.
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2
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Fernández-Vizcaíno E, Mougeot F, Mateo R, Camarero PR, Alcaide V, Ortiz-Santaliestra ME. A non-invasive method to monitor farmland bird exposure to triazole fungicides. CHEMOSPHERE 2023; 325:138316. [PMID: 36893863 DOI: 10.1016/j.chemosphere.2023.138316] [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: 11/24/2022] [Revised: 02/11/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
The treatment of seeds with pesticides is an extended practice in current agriculture. There is a high risk of exposure in granivorous birds, such as the red-legged partridge (Alectoris rufa), that can consume those seeds remaining on the surface during sowing. Fungicide exposure could in turn affect bird reproductive capacity. To better understand to what extent triazole fungicides are a threat to granivorous birds, we need an easy and reliable method to quantify field exposure. In this study, we tested a novel non-invasive method to detect the presence of triazole fungicide residues in farmland bird faeces. We experimentally exposed captive red-legged partridges to validate the method, and then applied it in a real scenario to assess exposure of wild partridges. We exposed adult partridges to seeds treated with two formulations containing triazole fungicides as active ingredients: Vincit®Minima (flutriafol 2.5%) and Raxil®Plus (prothioconazole 25% and tebuconazole 15%). We collected two types of faeces (caecal and rectal samples) immediately after exposure and 7 days later and quantified the concentrations of the three triazoles and their common metabolite (1,2,4-triazole). The three active ingredients and 1,2,4-triazole were only detected in faeces collected immediately after exposure. Triazole fungicide detection rates in rectal stool were 28.6%, 73.3% and 80% for flutriafol, prothioconazole and tebuconazole, respectively. In caecal samples, detection rates were 40%, 93.3% and 33.3%, respectively. 1,2,4-triazole was detected in 53% of rectal samples. For an applied use of the method in the field, we collected 43 faecal samples from wild red-legged partridges during autumn cereal seed sowing and found detectable levels of tebuconazole in 18.6% of the analysed wild partridges. The results of the experiment were then used to estimate actual exposure levels from this prevalence value found in wild birds. Our study shows that faecal analysis can be a useful tool to assess farmland bird exposure to triazole fungicides, when samples are fresh and the method has been validated for the detection of target molecules.
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Affiliation(s)
- Elena Fernández-Vizcaíno
- Instituto de Investigación en Recursos Cinegéticos (IREC) CSIC-UCLM-JCCM, Ronda de Toledo 12, 13005, Ciudad Real, Spain.
| | - François Mougeot
- Instituto de Investigación en Recursos Cinegéticos (IREC) CSIC-UCLM-JCCM, Ronda de Toledo 12, 13005, Ciudad Real, Spain
| | - Rafael Mateo
- Instituto de Investigación en Recursos Cinegéticos (IREC) CSIC-UCLM-JCCM, Ronda de Toledo 12, 13005, Ciudad Real, Spain
| | - Pablo R Camarero
- Instituto de Investigación en Recursos Cinegéticos (IREC) CSIC-UCLM-JCCM, Ronda de Toledo 12, 13005, Ciudad Real, Spain
| | - Vicente Alcaide
- Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal de Castilla La Mancha (IRIAF), Centro de Investigación Agroambiental El Chaparrillo JCCM. Carretera de Porzuna S/n, 13071, Ciudad Real, Spain
| | - Manuel E Ortiz-Santaliestra
- Instituto de Investigación en Recursos Cinegéticos (IREC) CSIC-UCLM-JCCM, Ronda de Toledo 12, 13005, Ciudad Real, Spain
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Serra L, Bourdon G, Estienne A, Fréville M, Ramé C, Chevaleyre C, Didier P, Chahnamian M, Ganier P, Pinault F, Froment P, Dupont J. Triazole pesticides exposure impaired steroidogenesis associated to an increase in AHR and CAR expression in testis and altered sperm parameters in chicken. Toxicol Rep 2023; 10:409-427. [PMID: 37025555 PMCID: PMC10070196 DOI: 10.1016/j.toxrep.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Since several decades, we observe the decline of various bird populations that could be partly linked to the agricultural intensification and the use of large amount of pesticides. Even if triazoles compounds are the most widely used fungicides, their effects on the reproductive parameters in birds are not clearly known. In the present study, we investigated the in vitro effects of 8 triazoles compounds alone (propiconazole (PP, from 0 to 10 µM), prothioconazole (PT), epoxiconazole (Epox), tetraconazole (TT), tebuconazole (TB), difenoconazole (Dif), cyproconazole (Cypro), metconazole (MC) (from 0 to 1 mM)) on the male chicken reproductive functions by using testis explants, primary Sertoli cells and sperm samples. In testis, all triazoles at the higher concentrations for 48 h inhibited lactate and testosterone secretion mostly in association with reduced expression of HSD3B and/or STAR mRNA levels. These data were also associated with increased expression of the nuclear receptors Aryl Hydrocarbon Receptor (AHR) and Constitutive Androstane Receptor (CAR) mRNA levels in testis and for all triazoles except for PP a reduction in Sertoli cell viability. When focusing on the sperm parameters, we demonstrated that most of the triazoles (MC, Epox, Dif, TB, TT and Cypro) at 0.1 or 1 mM for either 2, 12 or 24 min of exposure decreased sperm motility and velocity and increased the percentage of spermatozoa abnormal morphology. At the opposite, PP increased sperm motility in a dose dependent manner after 2 min of exposure whereas no significant effect was observed in response to PT whatever the dose and the time of exposure. Moreover, these effects were associated with an increase in the production of reactive oxygen species in spermatozoa. Taken together, most of the triazoles compounds impair testis steroidogenesis and semen parameters potentially through an increase in AHR and CAR expression and in oxidative stress, respectively. Data Availability Statement All the data will be available.
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Angelier F, Prouteau L, Brischoux F, Chastel O, Devier MH, Le Menach K, Martin S, Mohring B, Pardon P, Budzinski H. High contamination of a sentinel vertebrate species by azoles in vineyards: a study of common blackbirds (Turdus merula) in multiple habitats in western France. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120655. [PMID: 36410596 DOI: 10.1016/j.envpol.2022.120655] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/25/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Azoles represent the most used family of organic fungicides worldwide and they are used in agriculture to circumvent the detrimental impact of fungi on yields. Although it is known that these triazoles can contaminate the air, the soil, and the water, field data are currently and dramatically lacking to assess if, and to what extent, the use of triazoles could contaminate non-target wild vertebrate species, notably in agroecosystems. In this study, we aimed to document for the first time the degree of blood contamination of a generalist wild bird species by multiple azoles which are used for plant protection and fungi pest control in various habitats. We deployed passive air samplers and captured 118 Common blackbirds (Turdus merula) in an agroecosystem (vineyard), a protected forest, and a city in western France. We collected blood and analyzed the plasma levels of 13 triazoles and 2 imidazoles. We found that a significant percentage of blackbirds living in vineyards have extremely high plasma levels of multiple azoles (means (pg.g-1); tebuconazole: 149.23, difenoconazole: 44.27, fenbuconazole: 239.38, tetraconazole: 1194.16), while contamination was very limited in the blackbirds from the protected forest and absent in urban blackbirds. Interestingly, we also report that the contamination of blackbirds living in vineyard was especially high at the end of Spring and the beginning of Summer and this matches perfectly with the results from the passive air samplers (i.e., high levels of azoles in the air of vineyards during June and July). However, we did not find any correlation between the levels of plasma contamination by azoles and two simple integrative biomarkers of health (feather density and body condition) in this sentinel species. Future experimental studies are now needed to assess the potential sub-lethal effects of such levels of contamination on the physiology of non-target vertebrate species.
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Affiliation(s)
- Frédéric Angelier
- Centre D'Etudes Biologiques de Chizé, CNRS-LRU, UMR 7372, Villiers en Bois, 79360, France.
| | - Louise Prouteau
- Centre D'Etudes Biologiques de Chizé, CNRS-LRU, UMR 7372, Villiers en Bois, 79360, France; Université de Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - François Brischoux
- Centre D'Etudes Biologiques de Chizé, CNRS-LRU, UMR 7372, Villiers en Bois, 79360, France
| | - Olivier Chastel
- Centre D'Etudes Biologiques de Chizé, CNRS-LRU, UMR 7372, Villiers en Bois, 79360, France
| | | | - Karyn Le Menach
- Université de Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - Stéphan Martin
- Université de Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - Bertille Mohring
- Centre D'Etudes Biologiques de Chizé, CNRS-LRU, UMR 7372, Villiers en Bois, 79360, France; Environmental and Marine Biology, Åbo Akademi University, FI-20250, Turku, Finland
| | - Patrick Pardon
- Université de Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
| | - Hélène Budzinski
- Université de Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600, Pessac, France
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Bellot P, Brischoux F, Fritsch C, Goutte A, Alliot F, Rocchi S, Angelier F. Evidence of environmental transfer of tebuconazole to the eggs in the house sparrow (Passer domesticus): An experimental study. CHEMOSPHERE 2022; 308:136469. [PMID: 36116623 DOI: 10.1016/j.chemosphere.2022.136469] [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: 07/01/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 06/15/2023]
Abstract
Triazole compounds are among the most widely used fungicides in agroecosystems to protect crops from potential fungal diseases. Many farmland birds spend a significant part of their life cycle in agroecosystems, which may chronically expose them to pesticides. We experimentally tested whether exposure to environmental concentrations of tebuconazole could induce a contamination of the eggs in an agroecosystem sentinel species, the house sparrow (Passer domesticus). Wild-caught adult sparrows were maintained in captivity and exposed (exposed group) or not (control group) for seven months to tebuconazole through drinking water. Eggs were opportunistically collected for the determination of tebuconazole concentration by Liquid Chromatography coupled to tandem Mass Spectrometry in eggs. We found that eggs from exposed parents all contained tebuconazole with a mean concentration of 1.52 ng g-1 dry weight. In eggs from control parents, the tebuconazole concentration was below the limit of quantification (0.23 ng g-1 dry weight) for 11 out of 13 eggs. Thus, our study demonstrates for the first time that environmental exposure of female birds to tebuconazole can translate into egg contamination by this fungicide.
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Affiliation(s)
- Pauline Bellot
- Centre D'Etudes Biologiques de Chizé, CNRS-La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France.
| | - François Brischoux
- Centre D'Etudes Biologiques de Chizé, CNRS-La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France
| | - Clémentine Fritsch
- Laboratoire Chrono-Environnement, UMR 6249 CNRS / Université Bourgogne Franche-Comté, 25000, Besançon, France
| | - Aurélie Goutte
- École Pratique des Hautes Études, PSL Research University, UMR 7619 METIS, Sorbonne Université- CNRS, Paris, France
| | - Fabrice Alliot
- École Pratique des Hautes Études, PSL Research University, UMR 7619 METIS, Sorbonne Université- CNRS, Paris, France
| | - Steffi Rocchi
- Laboratoire Chrono-Environnement, UMR 6249 CNRS / Université Bourgogne Franche-Comté, 25000, Besançon, France; Service de Parasitologie-Mycologie, CHU Jean Minjoz, 25000, Besançon, France
| | - Frédéric Angelier
- Centre D'Etudes Biologiques de Chizé, CNRS-La Rochelle Université, UMR 7372, 79360, Villiers en Bois, France
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6
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de Montaigu CT, Goulson D. Field evidence of UK wild bird exposure to fludioxonil and extrapolation to other pesticides used as seed treatments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:22151-22162. [PMID: 34780016 PMCID: PMC8930954 DOI: 10.1007/s11356-021-17097-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
We determine the exposure of wild birds to pesticides via consumption of fludioxonil-treated winter wheat seeds following autumn drilling. We recorded the density of seeds left on the soil surface, bird density, and consumption of pesticide-treated seed by birds using camera traps. We calculated the dose ingested by each bird species in a single feeding bout and if they ate treated seeds exclusively for 1 day. We extrapolated this for an additional 19 pesticides commonly used as seed treatments, assuming equal consumption rates. All three fields contained grains on the soil surface (mean 7.14 seeds/m2 on sowing day). In total, 1,374 granivorous birds spanning 18 different species were observed in the fields, with 11 species filmed eating the seeds. Fludioxonil appears to pose a low risk to birds, with <1.14% of the LD50 potentially ingested by a bird for a daily maximum amount of seeds. Analysis of the further 19 pesticides commonly used as seed dressings suggests that the neonicotinoid insecticides imidacloprid, clothianidin, and thiamethoxam represent the highest risk for granivorous birds. For example, chaffinch (Fringilla coelebs) could consume 63% of LD50 of imidacloprid in a single feeding bout, and 370% in a day. Further investigation is clearly required to determine whether seeds treated with these other pesticides are consumed as readily as those treated with fludioxonil, as if so this is likely to cause significant harm.
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Affiliation(s)
| | - Dave Goulson
- School of Life Sciences, University of Sussex, Falmer, East Sussex, UK
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7
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Esther A, Schenke D, Heim W. Noninvasively Collected Fecal Samples as Indicators of Multiple Pesticide Exposure in Wild Birds. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:201-207. [PMID: 34818436 DOI: 10.1002/etc.5260] [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: 04/12/2021] [Revised: 10/25/2021] [Accepted: 11/22/2021] [Indexed: 05/15/2023]
Abstract
Pesticide use poses a potential hazard to wild birds that use agricultural farmland as their foraging habitat. Whereas most current pesticide studies have found residues in liver samples and single active substances, noninvasive sampling methods and data on a wide variety of agrochemicals are needed to determine pesticide exposure of living wild birds for postregistration monitoring. We collected feces during autumn migration of Eurasian skylarks (Alauda arvensis), a species that commonly forages in winter cereal crops. Birds were kept in paper bags until we measured their body condition, individually marked and released them. We analyzed the feces dropped in paper bags for the presence of 80 pesticides including rodenticides and degradation products. Nine active substances from fungicides and herbicides commonly used in grain and maize fields were detected individually, or in combination, in 25% of the samples. We found no significant differences in body condition between exposed and unexposed birds, but Eurasian skylarks without pesticide residues had a better body condtion score on average than birds with pesticide residues. Pesticide determination in noninvasively collected fecal samples allows a refined risk analysis, which takes pesticides used in the habitats of birds into account. It allows the search for the sources of pesticide contamination, but also enables research into potential deleterious effects on the fitness of farmland birds. Environ Toxicol Chem 2022;41:201-207. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Alexandra Esther
- Institute for Plant Protection in Horticulture and Forests, Vertebrate Research, Julius Kühn Institute, Federal Research Centre for Cultivated Plants, Münster, Germany
| | - Detlef Schenke
- Institute for Ecological Chemistry, Plant Analysis and Stored Product Protection, Julius Kühn Institute, Federal Research Centre for Cultivated Plants, Berlin, Germany
| | - Wieland Heim
- Institute of Landscape Ecology, University of Münster, Münster, Germany
- Department of Biology, University of Turku, Turku, Finland
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8
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Li Z. Improving screening model of pesticide risk assessment in surface soils: Considering degradation metabolites. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 222:112490. [PMID: 34237638 DOI: 10.1016/j.ecoenv.2021.112490] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
As pesticides can be degraded to toxic metabolites in the soil, metabolite toxicity should be considered in human health risk assessments. In this study, a screening-level modeling framework was developed to manage pesticides in surface soil, which was discussed under discrete and continuous emission scenarios. In addition, we selected glyphosate and its major metabolite (aminomethylphosphonic acid or AMPA) as examples to conduct screening-level risk management at regional, national, and global scales. The results indicated that if soil AMPA were not considered, human health risks could be significantly underestimated because of the large half-life of AMPA in the soil. For example, the added concentration factors of AMPA were simulated as 0.19 and 6.72 considering all major elimination pathways and considering the degradation pathway alone, respectively, indicating that AMPA formation could lead to severe extra health burdens. Furthermore, the evaluation of current glyphosate soil standards suggested that toxic metabolites should be considered in the regulatory process; otherwise, many standards could theoretically trigger high levels of soil AMPA, which could result in serious human health damage. Our proposed screening-level model can help to improve risk assessment and regulatory management of pesticides in surface soils.
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Affiliation(s)
- Zijian Li
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangdong 510275, China.
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9
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Venugopal D, Subramanian M, Rajamani J, Palaniyappan J, Samidurai J, Arumugam A. Levels and distribution pattern of organochlorine pesticide residues in eggs of 22 terrestrial birds from Tamil Nadu, India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:39253-39264. [PMID: 32642894 DOI: 10.1007/s11356-020-09978-5] [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: 04/13/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
Long-term monitoring is essential to assess the patterns and distribution of the residues of organochlorine pesticides (OCPs) in biota. Bird eggs have several advantages than other environmental matrixes, which have been used extensively to portray the accumulation and distribution of OCPs. The present study investigated the organochlorine pesticide (OCP) residues in eggs of 22 species of terrestrial birds collected from Tamil Nadu, India. Eggs found abandoned were collected during nest monitoring between 2001 and 2008 and analyzed for the presence of organochlorine pesticide residues. The results showed that the mean concentrations of total hexachlorohexane (∑HCHs), total dichlorodiphenyltrichloroethane (∑DDTs), heptachlor epoxide, and dieldrin ranged from non-detectable (nd) to 2800 ng/g, nd to1000 ng/g, nd to 700 ng/g, and nd to 240 ng/g on a wet mass (wm) basis, respectively. The variation in magnitude of contamination among the species and feeding guilds were not significantly different (p > 0.05). Among the OCPs analyzed, the residues of β-HCH and p,p'-DDE were found to be the abundant in concentration. Similarly, among various bird species studied, the highest concentrations of ∑OCPs (> 5000 ng/g wm) were recorded in the eggs of gray junglefowl, scaly-breasted munia, and red-whiskered bulbul. This may be due to their widespread occurrence of their habitat at proximity to the agricultural fields, where organochlorines were in use until recently. Among the various contaminants analyzed, concentrations of p,p'-DDE and heptachlor epoxide exceeded the threshold levels of toxicity for wild birds in > 5% of the egg samples. Hence, this study indicates the need for continued monitoring and further systematic ecotoxicological investigation of these compounds not only in eggs but also in other environmental media.
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Affiliation(s)
- Dhananjayan Venugopal
- ICMR-Regional Occupational Health Centre (Southern), Indian Council of Medical Research, Bangalore, 562110, India.
- Sálim Ali Centre for Ornithology and Natural History, Anaikatty, Coimbatore, 641108, India.
| | | | - Jayakumar Rajamani
- GITAM University, Bangalore Campus, Nagadenahalli, Bangalore, 561203, India
| | - Jayanthi Palaniyappan
- Department of Environmental Science, Periyar University, Salem, Tamil Nadu, 636011, India
| | - Jayakumar Samidurai
- Department of Zoology & Wildlife Biology, A.V.C. College (Autonomous), Mayiladuthurai, 609305, India
| | - Alaguraj Arumugam
- Sálim Ali Centre for Ornithology and Natural History, Anaikatty, Coimbatore, 641108, India
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10
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Gross MS, Bean TG, Hladik ML, Rattner BA, Kuivila KM. Uptake, Metabolism, and Elimination of Fungicides from Coated Wheat Seeds in Japanese Quail ( Coturnix japonica). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:1514-1524. [PMID: 31977218 DOI: 10.1021/acs.jafc.9b05668] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Pesticides coated to the seed surface potentially pose an ecological risk to granivorous birds that consume incompletely buried or spilled seeds. To assess the toxicokinetics of seeds treated with current-use fungicides, Japanese quail (Coturnix japonica) were orally dosed with commercially coated wheat seeds. Quail were exposed to metalaxyl, tebuconazole, and fludioxonil at either a low dose (0.0655, 0.0308, and 0.0328 mg/kg of body weight, respectively) or a high dose (0.196, 0.0925, and 0.0985 mg/kg of body weight, respectively). Fungicides were rapidly absorbed and distributed to tissues. Tebuconazole was metabolized into tert-butylhydroxy-tebuconazole. All compounds were eliminated to below detection limits within 24 h. The high detection frequencies observed in fecal samples potentially offer a non-invasive matrix to monitor pesticide exposure. With the summation of total body burden across plasma, tissue, and fecal samples, less than 9% of the administered dose was identified as the parent fungicide, demonstrating the importance to monitor both active ingredients and their metabolites in biological samples.
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Affiliation(s)
- Michael S Gross
- California Water Science Center , United States Geological Survey , Sacramento , California 95819 , United States
| | - Thomas G Bean
- Department of Environmental Science and Technology , University of Maryland , College Park , Maryland 20742 , United States
| | - Michelle L Hladik
- California Water Science Center , United States Geological Survey , Sacramento , California 95819 , United States
| | - Barnett A Rattner
- Patuxent Wildlife Research Center , United States Geological Survey , Beltsville , Maryland 20705 , United States
| | - Kathryn M Kuivila
- Oregon Water Science Center , United States Geological Survey , Portland , Oregon 97201 , United States
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11
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Pain DJ, Mateo R, Green RE. Effects of lead from ammunition on birds and other wildlife: A review and update. AMBIO 2019; 48:935-953. [PMID: 30879267 PMCID: PMC6675766 DOI: 10.1007/s13280-019-01159-0] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/22/2019] [Accepted: 02/04/2019] [Indexed: 05/14/2023]
Abstract
Poisoning of wild birds following ingestion of lead from ammunition has long been recognised and considerable recent research has focused on terrestrial birds, including raptors and scavengers. This paper builds upon previous reviews and finds that both the number of taxa affected and geographical spread of cases has increased. Some lead may also be absorbed from embedded ammunition fragments in injured birds which risk sub-lethal and welfare effects. Some papers suggest inter-specific differences in sensitivity to lead, although it is difficult to disentangle these from other factors that influence effect severity. Sub-lethal effects have been found at lower blood lead concentrations than previously reported, suggesting that previous effect-level 'thresholds' should be abandoned or revised. Lead poisoning is estimated to kill a million wildfowl a year in Europe and cause sub-lethal poisoning in another ≥ 3 million. Modelling and correlative studies have supported the potential for population-level effects of lead poisoning in wildfowl, terrestrial birds, raptors and scavengers.
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Affiliation(s)
- Deborah J. Pain
- Department of Zoology, University of Cambridge, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ UK
- Wildfowl & Wetlands Trust, Slimbridge, Gloucestershire GL2 7BT UK
| | - Rafael Mateo
- Toxicología de Fauna Silvestre, Instituto de Investigación en Recursos Cinegéticos (IREC), CSIC-UCLM-JCCM, Ronda de Toledo 12, 13005 Ciudad Real, Spain
| | - Rhys E. Green
- Department of Zoology, University of Cambridge, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ UK
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Plaza PI, Uhart M, Caselli A, Wiemeyer G, Lambertucci SA. A review of lead contamination in South American birds: The need for more research and policy changes. Perspect Ecol Conserv 2018. [DOI: 10.1016/j.pecon.2018.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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13
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De Castro-Català N, Muñoz I, Riera JL, Ford AT. Evidence of low dose effects of the antidepressant fluoxetine and the fungicide prochloraz on the behavior of the keystone freshwater invertebrate Gammarus pulex. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 231:406-414. [PMID: 28822331 DOI: 10.1016/j.envpol.2017.07.088] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/18/2017] [Accepted: 07/26/2017] [Indexed: 05/27/2023]
Abstract
In recent years, behavior-related endpoints have been proposed as rapid and reliable ecotoxicological tools for risk assessment. In particular, the use of detritivores to test the toxicity of pollutants through feeding is currently becoming a well-known method. Experiments combining feeding with other behavioral endpoints can provide relevant information about direct and indirect toxicological effects of chemicals. We carried out a feeding experiment with the shredder Gammarus pulex in order to detect indirect (through leaf conditioning) and direct effects (through water exposure) of two pollutants at environmentally relevant concentrations: the fungicide prochloraz (6 μg/L) and the antidepressant fluoxetine (100 ng/L). Prochloraz inhibited fungal growth on leaves, but it did not affect either the microbial breakdown rates or the C:N ratio of the leaves. Individuals of G. pulex that were fed with treated leaves presented lower consumption rates, not only those fed with prochloraz-treated leaves, but also those fed with fluoxetine-treated leaves, and those fed with the mixture-treated leaves. Mixed-effects models revealed that the swimming velocity of the amphipods after the experiment was modulated by the exposure to fluoxetine, and also by the exposure to prochloraz. We demonstrate that both the antidepressant and the fungicide may cause significant sublethal effects at low concentrations. The combination of behavioral endpoints together with the application of mixed models provided a useful tool for early detection of the effects of toxicity mixtures in freshwater ecosystems.
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Affiliation(s)
- N De Castro-Català
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Av. Diagonal, 643, 08028 Barcelona, Spain.
| | - I Muñoz
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Av. Diagonal, 643, 08028 Barcelona, Spain
| | - J L Riera
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Universitat de Barcelona, Av. Diagonal, 643, 08028 Barcelona, Spain
| | - A T Ford
- Institute of Marine Sciences, School of Biological Sciences, University of Portsmouth, Ferry Road, P04 9LY, Portsmouth, United Kingdom
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