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Prandi I, Dervas E, Colombino E, Bonaffini G, Zanet S, Orusa R, Robetto S, Vacchetta M, Mauthe von Degerfeld M, Quaranta G, Hetzel U, Capucchio MT. Causes of Admission, Mortality and Pathological Findings in European Hedgehogs: Reports from Two University Centers in Italy and Switzerland. Animals (Basel) 2024; 14:1852. [PMID: 38997963 PMCID: PMC11240775 DOI: 10.3390/ani14131852] [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: 04/17/2024] [Revised: 06/10/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024] Open
Abstract
European hedgehogs (Erinaceus europaeus) are nocturnal insectivores frequently found in urban areas. In the last decades, their population has declined in various European countries and human activities have emerged as significant contributors to this trend. While the literature has mainly focused on trauma as the major cause of mortality, few authors have considered pathological findings. The present study is based on the results of full post-mortem examinations performed on 162 European hedgehogs in Italy and 109 in Switzerland. Unlike in previous studies, the main cause of mortality was infectious diseases (60.5%), followed by traumatic insults (27.7%). The lungs were the main organ affected, showing mostly lymphoplasmacytic (45.9%), granulomatous (18.1%) or suppurative (8.2%) pneumonia. Nematodes were detected in 57.2% of all lungs and were significantly associated with pneumonia (p-value < 0.001). To our knowledge, this is the first study to report infectious diseases as the main cause of hedgehog death, emphasizing the need for wildlife rescue centers to adopt appropriate diagnostic and therapeutic measures. Further research is necessary to determine the broad range of infectious agents that affect this species and elucidate their interplay with the host. Finally, citizen sensitization should be implemented to promote responsible behaviors that could reduce human-related traumatic events.
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Affiliation(s)
- Ilaria Prandi
- Centro Animali Non Convenzionali, Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (G.B.); (M.M.v.D.); (G.Q.); (M.T.C.)
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (E.C.); (S.Z.)
| | - Eva Dervas
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (E.D.); (U.H.)
| | - Elena Colombino
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (E.C.); (S.Z.)
- Patología y Sanidad Animal, Departamento Producción Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad CEU Cardenal Herrera, CEU Universities, 46115 Alfara del Patriarca, Spain
| | - Giuseppe Bonaffini
- Centro Animali Non Convenzionali, Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (G.B.); (M.M.v.D.); (G.Q.); (M.T.C.)
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (E.C.); (S.Z.)
| | - Stefania Zanet
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (E.C.); (S.Z.)
| | - Riccardo Orusa
- National Reference Centre for Wild Animals Diseases (CeRMAS), S.C. Valle d’Aosta, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta (IZSPLV), 11020 Quart, Italy; (R.O.); (S.R.)
| | - Serena Robetto
- National Reference Centre for Wild Animals Diseases (CeRMAS), S.C. Valle d’Aosta, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta (IZSPLV), 11020 Quart, Italy; (R.O.); (S.R.)
| | | | - Mitzy Mauthe von Degerfeld
- Centro Animali Non Convenzionali, Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (G.B.); (M.M.v.D.); (G.Q.); (M.T.C.)
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (E.C.); (S.Z.)
| | - Giuseppe Quaranta
- Centro Animali Non Convenzionali, Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (G.B.); (M.M.v.D.); (G.Q.); (M.T.C.)
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (E.C.); (S.Z.)
| | - Udo Hetzel
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (E.D.); (U.H.)
| | - Maria Teresa Capucchio
- Centro Animali Non Convenzionali, Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (G.B.); (M.M.v.D.); (G.Q.); (M.T.C.)
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy; (E.C.); (S.Z.)
- National Research Council of Italy-Institute of Sciences of Food Production (CNR-ISPA), 10095 Grugliasco, Italy
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Lehmann S, Dervas E, Ruiz Subira A, Eulenberger U, Gimmel A, Grimm F, Hetzel U, Kipar A. Verminous pneumonia in European hedgehogs ( Erinaceus europaeus). Vet Pathol 2024; 61:256-268. [PMID: 37681312 PMCID: PMC10804698 DOI: 10.1177/03009858231193103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
The European hedgehog (Erinaceus europaeus) is a common wildlife species in European countries. Populations are declining due to anthropogenic factors and natural diseases. Verminous pneumonia has been observed as a frequent infectious disease in hedgehogs submitted for diagnostic postmortem examination. This prompted the present in-depth investigation on the lungs of 27 necropsied hedgehogs with confirmed lungworm infections, with or without antiparasitic treatment prior to death. The histological and/or parasitic (fecal samples) examination identified Capillaria aerophila infection in most animals (82%). The parasites were found free in the airway lumen and/or within the airway epithelium, from the larynx to bronchioles. Embedded worms and eggs were associated with epithelial hyperplasia or metaplasia, and long-term inflammation. More than half of the animals (59%) carried Crenosoma striatum, and 41% had a coinfection. C striatum adults were predominantly found free in the lumen of bronchi and bronchioles, and larvae were occasionally seen in granulomas in the pulmonary interstitium, the liver, and the intestine. Independent of the parasite species, a lymphoplasmacytic peribronchitis and, less frequently, interstitial infiltration of eosinophils, neutrophils, and macrophages as well as pneumocyte type II hyperplasia was seen. Interestingly, the extent of pneumonia was not correlated with age, respiratory clinical signs, antiparasitic treatment, or single or coinfection. Verminous pneumonia appeared to be the cause of death in over 25% of the animals, indicating that these parasites not only coexist with hedgehogs but can also be a primary pathogen in this species.
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Affiliation(s)
| | - Eva Dervas
- University of Zurich, Zurich, Switzerland
| | | | - Ulrike Eulenberger
- Wildlife Station “Stiftung Wildstation Landshut,” Utzenstorf, Switzerland
| | | | | | - Udo Hetzel
- University of Zurich, Zurich, Switzerland
| | - Anja Kipar
- University of Zurich, Zurich, Switzerland
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Molina-Lopez RA, Obón E, Darwich L. Morbidity and Prognostic Factors Associated with Wild Hedgehogs Admitted to a Wildlife Rehabilitation Center in Catalonia (NE Spain) from 1995 to 2020. Animals (Basel) 2024; 14:556. [PMID: 38396523 PMCID: PMC10886239 DOI: 10.3390/ani14040556] [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: 12/11/2023] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
Wildlife rehabilitation centers (WRC) play a crucial role in the collection of data and the monitoring of hedgehog populations. The main objective of this study was to identify the morbidity and prognostic factors associated with the mortality of wild hedgehogs admitted at a WRC in Catalonia. A total number of 3397 hedgehogs admitted from 1995 to 2020 were studied. The principal cause of admission was orphaned/young category (41%) followed by misplacement (19%), natural disease (17%), and trauma (14%). The best outcomes for release were for misplacement (93.6%), orphaned/young (72.3%), and other causes (77.6%), and the lowest proportion of released animals were found for natural disease (41.4%) and trauma (44.7%) categories. The most common macroscopic findings were the respiratory and digestive lesions. Internal parasites were also prevalent in 61% of the animals but with no association with a higher mortality. In the multivariate analyses, the prognostic indicators related with the mortality outcome were the presence of systemic (OR = 3.6, CI 95%: 2.8-4.6) and neurological (OR = 4.3, CI 95%: 2.9-6.4) signs. Morbidity and prognostic factors in wildlife rehabilitation are essential for providing effective care, making informed decisions, optimizing resources, and improving rehabilitation success rates.
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Affiliation(s)
- Rafael A. Molina-Lopez
- Wildlife Rehabilitation Center of Torreferrussa, Catalan Wildlife Service-Forestal Catalana S.A., 08130 Santa Perpètua de Mogoda, Spain;
| | - Elena Obón
- Wildlife Rehabilitation Center of Torreferrussa, Catalan Wildlife Service-Forestal Catalana S.A., 08130 Santa Perpètua de Mogoda, Spain;
| | - Laila Darwich
- Department Sanitat i Anatomia Animals, Veterinary School, Universitat Autonoma de Barcelona, 08193 Cerdanyola del Valles, Spain
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Schütte K, Springer A, Brandes F, Reuschel M, Fehr M, Strube C. Ectoparasites of European hedgehogs (Erinaceus europaeus) in Germany and their health impact. Parasit Vectors 2024; 17:2. [PMID: 38167501 PMCID: PMC10763030 DOI: 10.1186/s13071-023-06081-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/03/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The European hedgehog (Erinaceus europaeus) is known for high levels of ectoparasitism that not only represents a health risk for the animals themselves, but also for pet animals and humans as hedgehogs are frequently taken into human care. In the present study, patterns of ectoparasite infestation were assessed in hedgehogs taken into care at northern German animal rehabilitation centres. METHODS Ectoparasites (ticks, fleas and mites) of 498 hedgehogs were collected over a period of 3 years from July 2018 to May 2021. Species were identified based on morphological characteristics and also via amplification and sequencing of the partial cytochrome c oxidase subunit 2 (COX-2) gene for fleas of the family Ceratophyllidae. Seasonal changes in infestation patterns as well as correlations with animal age, body weight and health status were assessed using generalised linear models. RESULTS Infestation with ticks, fleas and mites occurred throughout the year. Overall, 86.5% (431/498) of the examined hedgehogs were infested with ticks, 91.4% (455/498) with fleas and 17.7% (88/498) with mites. Ixodes ricinus and Ixodes hexagonus/Ixodes canisuga were the most common tick species detected, with the additional occurrence of one Ixodes frontalis. Significant seasonal changes were observed for I. ricinus, but not for I. hexagonus/I. canisuga. Additionally, I. ricinus nymph prevalence declined significantly as of 2020, probably as a consequence of the climate change-related drought as of 2018. In hedgehogs with flea infestations, Archaeopsylla erinacei, Ceratophyllus sciurorum, Nosopsyllus fasciatus and Ctenocephalides felis were identified. In all cases of mite infestation, Caparinia tripilis was detected, in addition to specimens of the family Macronyssidae and free-living mites of the family Acaridae. Statistical analyses showed correlations regarding the factors month, year, body weight and age, but no correlation was evident regarding the health status of the animals. CONCLUSIONS With a detected infestation rate of 98.6%, almost all of the examined hedgehogs were infested with at least one ectoparasite species. The seasonal activity patterns of the different ectoparasite species together with the complex annual cycle of hedgehogs lead to different seasonal patterns in ectoparasite prevalence and infestation intensities. Due to the risk of transmission of zoonotic pathogens as well as the possible negative impact on the host itself, hedgehogs should be treated against ectoparasites when taken into care facilities.
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Affiliation(s)
- Karolin Schütte
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
- Wildlife Rescue and Conservation Center Sachsenhagen, Sachsenhagen, Germany
| | - Andrea Springer
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
| | - Florian Brandes
- Wildlife Rescue and Conservation Center Sachsenhagen, Sachsenhagen, Germany
| | - Maximilian Reuschel
- Department of Small Mammal, Reptile and Avian Diseases, University of Veterinary Medicine Hannover, Hanover, Germany
| | - Michael Fehr
- Department of Small Mammal, Reptile and Avian Diseases, University of Veterinary Medicine Hannover, Hanover, Germany
| | - Christina Strube
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany.
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Rasmussen SL, Schrøder BT, Berger A, Sollmann R, Macdonald DW, Pertoldi C, Alstrup AKO. Testing the Impact of Robotic Lawn Mowers on European Hedgehogs ( Erinaceus europaeus) and Designing a Safety Test. Animals (Basel) 2023; 14:122. [PMID: 38200853 PMCID: PMC10777904 DOI: 10.3390/ani14010122] [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: 11/30/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Previous research has established that some models of robotic lawn mowers are potentially harmful to hedgehogs. As the market for robotic lawn mowers is expanding rapidly and the populations of European hedgehogs (Erinaceus europaeus) are in decline, it is important to investigate this risk further to understand the potential threat which some robotic lawn mowers may pose to hedgehogs. We tested 19 models of robotic lawn mowers in collision with hedgehog cadavers to measure their effect on hedgehogs. Our results showed that some models of robotic lawn mowers may injure hedgehogs, whereas others are not harmful to them. Apart from one single incidence, all robotic lawn mowers had to physically touch the hedgehog carcasses to detect them. Larger hedgehog cadavers were less likely to be "injured", with height being the most influential measure of size. The firmness of the tested hedgehog cadavers (frozen or thawed) did not influence the outcome of the collision tests. Neither the position of the hedgehog cadavers nor the selected technical features of the lawn mowers affected the probability of injury. Based on the results, we designed a standardised safety test to measure the effect of a specific model of robotic lawn mower on hedgehogs.
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Affiliation(s)
- Sophie Lund Rasmussen
- Wildlife Conservation Research Unit, The Recanati-Kaplan Centre, Department of Biology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK;
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark;
- Linacre College, University of Oxford, St. Cross Road, Oxford OX1 3JA, UK
| | - Bettina Thuland Schrøder
- Behavioral Ecology Group, Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen Ø, Denmark;
| | - Anne Berger
- Department of Evolutionary Ecology, Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany;
| | - Rahel Sollmann
- Department of Ecological Dynamics, Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany;
| | - David W. Macdonald
- Wildlife Conservation Research Unit, The Recanati-Kaplan Centre, Department of Biology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK;
| | - Cino Pertoldi
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark;
- Aalborg Zoo, Mølleparkvej 63, 9000 Aalborg, Denmark
| | - Aage Kristian Olsen Alstrup
- Department of Nuclear Medicine and PET, Aarhus University Hospital, Palle Juul-Jensens Boulevard 165, 8200 Aarhus, Denmark;
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 165, 8200 Aarhus, Denmark
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Mullineaux E, Pawson C. Trends in Admissions and Outcomes at a British Wildlife Rehabilitation Centre over a Ten-Year Period (2012-2022). Animals (Basel) 2023; 14:86. [PMID: 38200817 PMCID: PMC10778305 DOI: 10.3390/ani14010086] [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: 11/21/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Millions of animals pass through wildlife rehabilitation centres (WRCs) globally each year, some dying in captivity, others euthanised, and some released into the wild. Those caring for these animals are generally well-intentioned, but skills, knowledge, and resources may be limited, potentially compromising animal welfare. WRC databases provide an opportunity to provide an evidence base for treatment and conservation efforts. 42,841 records of animals admitted over a 10-year period to a British WRC were analysed. More birds (69.16%) were admitted than mammals (30.48%) and reptiles and amphibians (0.36%). Most admissions were in the summer (48.8%) and spring (26.0%) months. A total of 9 of the 196 species seen made up 57% of admissions, and hedgehogs were the most common species admitted (14% of all admissions and 20% of mammals). Juvenile animals (35.5%) were admitted more frequently than 'orphans' (26.0%) or adults (26.4%). 'Orphaned' was also the predominant reason for admission (28.3%), followed by 'injured' (25.5%). 42.6% of animals were eventually released back to the wild, 19.2% died in captivity, and 37.2% were euthanised; 1% of outcomes were unknown. The prognosis was better for orphaned animals than for those admitted because of injury. Unexpected natural deaths in captivity were found to decline over the period of study, consistent with improved early triage. These findings can be used to focus veterinary and WRC training and seasonal resources on the species and case types most likely to be successfully rehabilitated and released. The findings also have the potential to contribute to our understanding of anthropogenic impacts, historical and regional variations in ecosystem health, and resultant implications for animal welfare.
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Affiliation(s)
- Elizabeth Mullineaux
- Capital Veterinary Services Ltd., Haddington, East Lothian EH41 4JN, UK
- Secret World Wildlife Rescue, Highbridge, Somerset TA9 3PZ, UK
| | - Chris Pawson
- Department of Animal and Agriculture, Hartpury University, Hartpury, Gloucestershire GL19 3BE, UK;
- College of Health, Science and Society, University of the West of England, Bristol BS16 1QY, UK
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Berger A. Occurrence and Characteristics of Cut Injuries in Hedgehogs in Germany: A Collection of Individual Cases. Animals (Basel) 2023; 14:57. [PMID: 38200788 PMCID: PMC10778023 DOI: 10.3390/ani14010057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/13/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
The number of European hedgehogs (Erinaceus europaeus) is in long-term decline across Europe. Recently, an additional threat to hedgehogs' lives has been cutting injuries caused by garden care equipment, but to date, there have been no reliable data on their spatial and temporal occurrence as well as characteristics such as mortality rate. Usually, found injured hedgehogs are admitted to care centres. In this study, data on hedgehogs with cutting injuries were collected from care centres throughout Germany. Over a period of 16 months, data on a total of 370 hedgehogs with cut injuries were reported by 71 care centres. At least 60% of these hedgehogs were found more than 12 h after the accident and at least 47% did not survive as a result of the injury. The comparatively high mortality rate coupled with a possible high number of unreported cases of hedgehogs with laceration injuries show that these accidents pose an additional, serious danger to hedgehogs, both impacting the welfare of individual animals and having a broader effect on the conservation potential of this species. Moreover, the data collected objectify the current discussion on the need for possible technical or political solutions to prevent such injuries.
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Affiliation(s)
- Anne Berger
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany
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Rasmussen SL, Schrøder BT, Berger A, Macdonald DW, Pertoldi C, Briefer EF, Alstrup AKO. Facing Danger: Exploring Personality and Reactions of European Hedgehogs ( Erinaceus europaeus) towards Robotic Lawn Mowers. Animals (Basel) 2023; 14:2. [PMID: 38200733 PMCID: PMC10777922 DOI: 10.3390/ani14010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 01/12/2024] Open
Abstract
The populations of European hedgehog (Erinaceus europaeus) are in decline, and it is essential that research identifies and mitigates the factors causing this. Hedgehogs are increasingly sharing habitats with humans, being exposed to a range of dangers in our backyards. Previous research has documented that some models of robotic lawn mowers can cause harm to hedgehogs. This study explored the personality and behaviour of 50 live hedgehogs when facing an approaching, disarmed robotic lawn mower. By combining a novel arena and novel object test, we found that 27 hedgehogs could be categorised as "shy" and 23 as "bold", independently of sex and age. The encounter tests with a robotic lawn mower showed that the hedgehogs positioned themselves in seven different ways. Personality did not affect their reactions. Adult hedgehogs tended to react in a shyer manner, and the hedgehogs, generally, acted less boldly during their second encounter with the robotic lawn mower. Additionally, our results show that bold individuals reacted in a more unpredictable way, being more behaviourally unstable compared to the shy individuals. This knowledge will be applied in the design of a standardised hedgehog safety test, eventually serving to produce and approve hedgehog-friendly robotic lawn mowers.
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Affiliation(s)
- Sophie Lund Rasmussen
- Wildlife Conservation Research Unit, The Recanati-Kaplan Centre, Department of Biology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK;
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark;
- Linacre College, University of Oxford, St. Cross Road, Oxford OX1 3JA, UK
| | - Bettina Thuland Schrøder
- Behavioral Ecology Group, Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark; (B.T.S.); (E.F.B.)
| | - Anne Berger
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany;
| | - David W. Macdonald
- Wildlife Conservation Research Unit, The Recanati-Kaplan Centre, Department of Biology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK;
| | - Cino Pertoldi
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark;
- Aalborg Zoo, Mølleparkvej 63, 9000 Aalborg, Denmark
| | - Elodie Floriane Briefer
- Behavioral Ecology Group, Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen, Denmark; (B.T.S.); (E.F.B.)
| | - Aage Kristian Olsen Alstrup
- Department of Nuclear Medicine and PET, Aarhus University Hospital, Palle Juul-Jensens Boulevard 165, 8200 Aarhus, Denmark;
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 165, 8200 Aarhus, Denmark
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Bearman-Brown LE, Baker PJ. An Estimate of the Scale and Composition of the Hedgehog ( Erinaceus europeaus) Rehabilitation Community in Britain and the Channel Islands. Animals (Basel) 2022; 12:ani12223139. [PMID: 36428367 PMCID: PMC9686839 DOI: 10.3390/ani12223139] [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: 07/29/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 11/16/2022] Open
Abstract
The conservation benefits of wildlife rehabilitation are equivocal, but could be substantial for formerly common species that are declining rapidly but are still commonly admitted to wildlife centres. We used a questionnaire survey to estimate the number of practitioners rehabilitating West European hedgehogs (Erinaceus europaeus) in Britain and the numbers entering hospitals/centres in one benchmark year (2016); practitioners were identified using an internet search and snowball sampling. Overall, 304 rehabilitators were identified: 148 supplied data on their structure, and 174 outlined the number of hedgehogs admitted in 2016. The former comprised 62.6% small (≤50 hedgehogs admitted year−1), 16.7% medium-sized (51−250 yr−1), and 20.7% large (>250 yr−1) hospitals; however, these accounted for 4.8%, 12.4%, and 82.8% of hedgehog admissions, respectively. Small hospitals were less likely to be registered as a charity, have paid staff, have a social media account, to record admissions electronically, or to conduct post-release monitoring. However, they were more likely to operate from their home address and to have been established for ≤5 years. Extrapolations indicate that this rehabilitation community admitted >40,000 hedgehogs in 2016, of which approximately 50% could have been released. These figures suggest that wildlife rehabilitation has potentially been an important factor in the dynamics of hedgehog populations in Britain in the last two decades.
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Affiliation(s)
- Lucy E. Bearman-Brown
- Department of Animal & Agriculture, Hartpury University, Gloucestershire GL19 3BE, UK
- Correspondence: ; Tel.: +44-(0)1452702465
| | - Philip J. Baker
- School of Biological Sciences, University of Reading, Reading RG6 6AH, UK
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Fine-scale habitat selection of a small mammalian urban adapter: the West European hedgehog (Erinaceus europaeus). Mamm Biol 2022. [DOI: 10.1007/s42991-022-00251-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
AbstractUnderstanding patterns of habitat selection and factors affecting space use is fundamental in animal conservation. In urban landscapes, such knowledge can be used to advise householders on how best to manage their gardens for wildlife. In this study, we tracked 28 West European hedgehogs (Erinaceus europaeus), a species of conservation concern in the UK, in an area of high-density housing using radio and GPS tags to quantify patterns of habitat use and identify factors associated with the proportion of time spent in individual gardens. Both males and females exhibited a preference for residential gardens, but there were subtle differences between the sexes in relation to house type and front versus back gardens. Hedgehogs spent significantly more time in gardens where artificial food was provided, where a compost heap was present, if foxes (Vulpes vulpes) were infrequent visitors, if it rained overnight and as daylength increased (i.e., shorter nights); garden use was not significantly associated with variables potentially likely to reflect invertebrate prey abundance. These data suggest that the primary positive action that householders can undertake for urban hedgehogs is providing supplementary food. However, householders often feed hedgehogs after they know they are already visiting their garden. Consequently, the presence of artificial food may make it difficult to identify other important influences affecting garden use. Finally, we report that a GPS fix acquisition rate < 60% likely had no major effect on the results of our analyses, but should be a consideration in future studies using this technique on this species and in this habitat.
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Cope HR, McArthur C, Dickman CR, Newsome TM, Gray R, Herbert CA. A systematic review of factors affecting wildlife survival during rehabilitation and release. PLoS One 2022; 17:e0265514. [PMID: 35298527 PMCID: PMC8929655 DOI: 10.1371/journal.pone.0265514] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/03/2022] [Indexed: 12/03/2022] Open
Abstract
Millions of native animals around the world are rescued and rehabilitated each year by wildlife rehabilitators. Triage and rehabilitation protocols need to be robust and evidence-based, with outcomes consistently recorded, to promote animal welfare and better understand predictors of wildlife survival. We conducted a global systematic review and meta-analysis of 112 articles that reported survival rates of native mammals and birds during rehabilitation and after release to determine intrinsic and extrinsic factors associated with their survival. We assessed survival during rehabilitation and in the short- and long-term post-release, with the hypothesis that survival will vary as a function of species body size, diel activity pattern, trophic level and study location (region of the world). We aimed to determine the direction of effect of these factors on survival to assist in decision-making during triage and rehabilitation. Results showed that mammals and birds were equally likely to survive all stages of rehabilitation, and survival rates varied between locations. Birds in North America had the poorest survival rates post-release, particularly long-term, as did diurnal and carnivorous birds in the short-term post-release. Anthropogenic factors such as motor vehicle collisions and domestic or feral animal attack contributed to morbidity and post-release mortality in 45% (168 of 369) of instances. The reasons for rescue and associated severity of diagnosis were commonly reported to affect the likelihood of survival to release, but factors affecting survival were often species-specific, including bodyweight, age, and characteristics of the release location. Therefore, evidence-based, species-specific, and context-specific protocols need to be developed to ensure wildlife survival is maximised during rehabilitation and post-release. Such protocols are critical for enabling rapid, efficient rescue programs for wildlife following natural disasters and extreme weather events which are escalating globally, in part due to climate change.
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Affiliation(s)
- Holly R. Cope
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
- * E-mail:
| | - Clare McArthur
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, NSW, Australia
| | - Christopher R. Dickman
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, NSW, Australia
| | - Thomas M. Newsome
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, NSW, Australia
| | - Rachael Gray
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, NSW, Australia
| | - Catherine A. Herbert
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, NSW, Australia
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12
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Zacharopoulou M, Guillaume E, Coupez G, Bleuart C, Le Loc'h G, Gaide N. Causes of Mortality and Pathological Findings in European Hedgehogs (Erinaceus europaeus) Admitted to a Wildlife Care Centre in Southwestern France from 2019 to 2020. J Comp Pathol 2022; 190:19-29. [DOI: 10.1016/j.jcpa.2021.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/08/2021] [Accepted: 11/04/2021] [Indexed: 10/19/2022]
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13
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Rasmussen SL, Hallig J, van Wijk RE, Petersen HH. An investigation of endoparasites and the determinants of parasite infection in European hedgehogs ( Erinaceus europaeus) from Denmark. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2021; 16:217-227. [PMID: 34703761 PMCID: PMC8524744 DOI: 10.1016/j.ijppaw.2021.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/09/2021] [Accepted: 10/09/2021] [Indexed: 12/04/2022]
Abstract
The European hedgehog population is declining in Europe. It is therefore important to investigate the causes for the decline and monitor the general health of the species. We investigated the endoparasite occurrence in 299 dead European hedgehogs. Of these, endoparasites were detected in 69% of the individuals tested. We identified Crenosoma striatum, Capillaria aerophila (syn. Eucoleus aerophilus), Capillaria spp., coccidia, Cryptosporidium spp., Brachylaemus spp. and Capillaria hepatica. We also examined the hedgehogs for Giardia spp. and Echinococcus multilocularis but all were negative. Coccidia (n = 7, 2.5%) and Cryptosporidium spp. (n = 14, 5.2%) were only detected in individuals from Zealand, Lolland and Jutland south of the Limfjord. Single cases of Brachylaemus spp. (n = 1, 0.4%) and Capillaria hepatica (n = 1, 1.1%) were exclusively discovered in Jutland south and north of the Limfjord, respectively. These results indicate a regional difference in endoparasite species carried by European hedgehogs in Denmark. This stresses the need for hedgehogs to be cared for locally when admitted to wildlife rehabilitation centres, and to be released within their area of origin, to prevent spread of endoparasite infections among hedgehogs. Additionally, we explored the following possible determinants of parasite infection in the hedgehogs: sex, age, mortality category (in-care, natural and roadkill), infection with MRSA, genetic heterozygosity, month of death, geographical location and habitat type, and found that only age had a statistically significant effect on endoparasite prevalence, as we detected a lower occurrence of endoparasites in juvenile hedgehogs (<1 year) compared to the other age classes. However, pairwise comparisons of geographical regions did show significant differences in endoparasite occurrence: Zealand vs. Jutland south of the Limfjord and Zealand vs. Falster. We conclude that, in line with previous studies of European hedgehogs throughout their range in Western Europe, endoparasite infections are common and a natural part of their ecology. We investigated the endoparasites of 299 dead European hedgehogs from Denmark. We found that 69% (n = 206) of the hedgehogs hosted endoparasites. We detected Crenosoma, Capillaria, Cryptosporidium, Brachylaemus and coccidia spp. We explored possible determinants of overall endoparasite occurrence. We conclude that only age and geography significantly affected endoparasite occurrence.
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Affiliation(s)
- Sophie Lund Rasmussen
- Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, The Recanati-Kaplan Centre, Tubney House, Abingdon Road, Tubney, Abingdon, OX13 5QL, UK.,Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220, Aalborg, Denmark
| | - Jakob Hallig
- Centre for Diagnostics, Department of Health Technology, Technical University of Denmark, Kemitorvet, 2800, Kgs, Lyngby, Denmark
| | - Rien E van Wijk
- Van Wijk Eco Research, Bagsværddal 7 st tv, 2880, Bagsværd, Denmark
| | - Heidi Huus Petersen
- Centre for Diagnostics, Department of Health Technology, Technical University of Denmark, Kemitorvet, 2800, Kgs, Lyngby, Denmark
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14
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Lukesova G, Voslarova E, Vecerek V. Juvenile European hedgehogs (Erinaceus europaeus) at rescue centers and their release rate depending on their weight on admission. PLoS One 2021; 16:e0258273. [PMID: 34618876 PMCID: PMC8496866 DOI: 10.1371/journal.pone.0258273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/22/2021] [Indexed: 11/19/2022] Open
Abstract
This study aimed to assess the numbers of juvenile European hedgehogs admitted to rescue centers in the Czech Republic from the viewpoint of their weight on admission, the reason for their admission, and the success rate of their release back into the wild. The results of our study show varying levels of success in the rearing of hedgehogs admitted at different ages (weights) and a varying period required for their rehabilitation. The greatest chance of release was seen in hedgehogs with a weight on the admission of 500-599 g (64.22% released) and 400-499 g (63.31% released). In contrast, the smallest number of young hedgehogs successfully rehabilitated and released was seen in hoglets weighing 200-299 g (35.24% released) on admission, which corresponds to the weight of hedgehogs at the time of weaning. Time spent at a rescue center may pose an undesirable threat to the lives of animals in some categories. Hedgehogs weighing up to 99 g on admission spent the longest period time at rescue centers (a median of 48 days), while hedgehogs weighing 500-599 g on admission spent the shortest time (a median of 7 days). The majority of hedgehogs in the lowest weight categories were admitted due to their inability to survive on their own. A large percentage of hedgehogs of greater weight, in contrast, were juvenile hedgehogs brought to rescue centers needlessly. The percentage of released animals did not exceed 65%, however, even for entirely independent categories of older juveniles. From this perspective, the fact that hedgehogs are often brought to rescue centers in the belief that they are not self-sufficient young, though they are actually juvenile or even adult individuals that do not require human care, can be considered a significant finding.
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Affiliation(s)
- Gabriela Lukesova
- Faculty of Veterinary Hygiene and Ecology, Department of Animal Protection and Welfare and Veterinary Public Health, University of Veterinary Sciences Brno, Brno, Czech Republic
| | - Eva Voslarova
- Faculty of Veterinary Hygiene and Ecology, Department of Animal Protection and Welfare and Veterinary Public Health, University of Veterinary Sciences Brno, Brno, Czech Republic
| | - Vladimir Vecerek
- Faculty of Veterinary Hygiene and Ecology, Department of Animal Protection and Welfare and Veterinary Public Health, University of Veterinary Sciences Brno, Brno, Czech Republic
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15
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Kwok ABC, Haering R, Travers SK, Stathis P. Trends in wildlife rehabilitation rescues and animal fate across a six-year period in New South Wales, Australia. PLoS One 2021; 16:e0257209. [PMID: 34506558 PMCID: PMC8432793 DOI: 10.1371/journal.pone.0257209] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/25/2021] [Indexed: 11/26/2022] Open
Abstract
Globally, millions of animals are rescued and rehabilitated by wildlife carers each year. Information gathered in this process is useful for uncovering threats to native wildlife, particularly those from anthropogenic causes. However, few studies using rehabilitation data include a diverse range of fauna, cover large geographical areas, and consider long-term trends. Furthermore, few studies have statistically modelled causes of why animals come into care, and what are their chances of survival. This study draws on 469,553 rescues reported over six years by wildlife rehabilitators for 688 species of bird, reptile, and mammal from New South Wales, Australia. For birds and mammals, ‘abandoned/orphaned’ and ‘collisions with vehicles’ were the dominant causes for rescue, however for reptiles this was ‘unsuitable environment’. Overall rescue numbers were lowest in winter, and highest in spring, with six-times more ‘abandoned/orphaned’ individuals in spring than winter. Of the 364,461 rescues for which the fate of an animal was known, 92% fell within two categories: ‘dead’, ‘died or euthanased’ (54.8% of rescues with known fate) and animals that recovered and were subsequently released (37.1% of rescues with known fate). Modelling of the fate of animals indicated that the likelihood of animal survival (i.e. chance of: being released, left and observed, or permanent care), was related to the cause for rescue. In general, causes for rescue involving physical trauma (collisions, attacks, etc.) had a much lower likelihood of animals surviving than other causes such as ‘unsuitable environment’, ‘abandoned/orphaned’, and this also showed some dependence upon whether the animal was a bird, reptile, or mammal. This suggests rehabilitation efforts could be focused on particular threats or taxa to maximise success, depending on the desired outcomes. The results illustrate the sheer volume of work undertaken by rehabilitation volunteers and professionals toward both animal welfare and to the improvement of wildlife rehabilitation in the future.
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Affiliation(s)
| | - Ron Haering
- New South Wales Department of Planning, New South Wales National Parks and Wildlife Service, Industry and Environment, Parramatta, Australia
- * E-mail:
| | - Samantha K. Travers
- New South Wales Department of Planning, Industry and Environment, Parramatta, Australia
- Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia
| | - Peter Stathis
- New South Wales Department of Planning, New South Wales National Parks and Wildlife Service, Industry and Environment, Parramatta, Australia
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16
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Abstract
Erinaceus europaeus is a cosmopolitan mammalian species broadly distributed in Europe, from natural to suburban areas. Due to its ecological role and susceptibility to distinct zoonotic agents, E. europaeus could be a suitable sentinel candidate for many global problems that negatively affect human and animal health. Hedgehogs can work as bioindicators to environmental contamination and can be hosts for multiple tickborne zoonotic agents. Thus, people who directly or indirectly make physical contact with this species are exposed to a variety of threats. Moreover, it has also been studied as an indicator for antibiotic resistance, which was already confirmed for tetracyclines. Additionally, it was also reported as a reservoir for methicillin-resistant Staphylococcus aureus (MRSA). More recently, hedgehogs have been recently recognised as potential reservoirs of MERS-CoV-like strains. Among other animals, this species can possibly represent an intermediate reservoir for SARS-CoV-2. The aim of this review is to briefly expose the scientific attainments about hedgehog health, namely agents, diseases, and threats that significantly affect general health concerns and that contribute to achieve One Health principles.
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17
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Bezerra-Santos MA, Sgroi G, Mendoza-Roldan JA, Khedri J, Camarda A, Iatta R, Sazmand A, Otranto D. Ectoparasites of hedgehogs: From flea mite phoresy to their role as vectors of pathogens. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2021; 15:95-104. [PMID: 33996441 PMCID: PMC8102208 DOI: 10.1016/j.ijppaw.2021.04.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 12/14/2022]
Abstract
Hedgehogs are synanthropic mammals, reservoirs of several vector-borne pathogens and hosts of ectoparasites. Arthropod-borne pathogens (i.e., Rickettsia spp., Borrelia spp., and Anaplasmataceae) were molecularly investigated in ectoparasites collected on hedgehogs (n = 213) from Iran (161 Hemiechinus auritus, 5 Erinaceus concolor) and Italy (47 Erinaceus europaeus). In Iran, most animals examined (n = 153; 92.2%) were infested by ticks (Rhipicephalus turanicus, Hyalomma dromedarii), and 7 (4.2%) by fleas (Archeopsylla erinacei, Ctenocephalides felis). Of the hedgehogs infested by arthropods in Italy (i.e., 44.7%), 18 (38.3%) were infested by fleas (Ar. erinacei), 7 (14.9%) by ticks (Haemaphysalis erinacei, Rh. turanicus, Rhipicephalus sanguineus sensu lato), and 6 (12.8%) by mites (Caparinia tripilis, Acarus nidicolous, Ornithonyssus spp.). Phoretic behavior of C. tripilis on Ar. erinacei was detected in two flea specimens from Italy. At the molecular analysis Rickettsia spp. was detected in 93.3% of the fleas of Italy. In Iran, Rickettsia spp. was detected in 8.0% out of 212 Rh. turanicus ticks, and in 85.7% of the Ar. erinacei fleas examined. The 16S rRNA gene for Ehrlichia/Anaplasma spp. was amplified in 4.2% of the 212 Rh. turanicus ticks. All sequences of Rickettsia spp. from fleas presented 100% nucleotide identity with Rickettsia asembonensis, whereas Rickettsia spp. from Rh. turanicus presented 99.84%–100% nucleotide identity with Rickettsia slovaca, except for one sequence, identical to Rickettsia massiliae. The sequences of the 16S rRNA gene revealed 99.57%–100% nucleotide identity with Anaplasma spp., except for one, identical to Ehrlichia spp. A new phoretic association between C. tripilis mites and Ar. erinacei fleas has been herein reported, which could be an important route for the spreading of this mite through hedgehog populations. Additionally, spotted fever group rickettsiae were herein detected in ticks and fleas, and Anaplasma/Ehrlichia spp. in ticks, suggesting that hedgehogs play a role as reservoirs for these vector-borne pathogens. New phoretic association of Caparinia tripilis mites on Archaeopsylla erinacei fleas. Occurrence of spotted fever group rickettsiae in Rhipicephalus turanicus from hedgehogs. Occurrence of Anaplasmataceae in Rhipicephalus turanicus from hedgehogs. High Prevalence of Rickettsia asembonensis in Archaeopsylla erinacei fleas from hedgehogs. Hedgehogs are suggested as reservoirs of vector-borne pathogens.
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Affiliation(s)
| | - Giovanni Sgroi
- Department of Veterinary Medicine, University of Bari, Valenzano, 70010, Bari, Italy
| | | | - Javad Khedri
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Antonio Camarda
- Department of Veterinary Medicine, University of Bari, Valenzano, 70010, Bari, Italy.,Osservatorio Faunistico Regionale - Wildlife Rescue Center of Apulia, Bitetto, 70020, Bari, Italy
| | - Roberta Iatta
- Department of Veterinary Medicine, University of Bari, Valenzano, 70010, Bari, Italy
| | - Alireza Sazmand
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, 6517658978, Hamedan, Iran.,Zoonotic Diseases Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences, 8915173160, Yazd, Iran
| | - Domenico Otranto
- Department of Veterinary Medicine, University of Bari, Valenzano, 70010, Bari, Italy.,Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, 6517658978, Hamedan, Iran
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18
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Rasmussen SL, Schrøder AE, Mathiesen R, Nielsen JL, Pertoldi C, Macdonald DW. Wildlife Conservation at a Garden Level: The Effect of Robotic Lawn Mowers on European Hedgehogs ( Erinaceus europaeus). Animals (Basel) 2021; 11:ani11051191. [PMID: 33919297 PMCID: PMC8143328 DOI: 10.3390/ani11051191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/11/2021] [Accepted: 04/16/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Injured European hedgehogs are frequently admitted to hedgehog rehabilitation centres with different types of cuts and injuries. Although not rigorously quantified, a growing concern is that an increasing number of cases may have been caused by robotic lawn mowers. Research indicates that European hedgehogs are in decline. It is therefore important to identify and investigate the factors responsible for this decline to improve the conservation initiatives directed at this species. Because hedgehogs are increasingly associated with human habitation, it seems likely that numerous individuals will encounter several robotic lawn mowers during their lifetimes. Consequently, this study aimed to describe and quantify the effects of robotic lawn mowers on hedgehogs, and we tested 18 robotic lawn mowers in collision with dead hedgehogs. Some models caused extensive damage to the dead hedgehogs, but there were noteworthy differences in the degree of harm inflicted, with some consistently causing no damage. None of the robotic lawn mowers tested was able to detect the presence of dead, dependent juvenile hedgehogs, and no models could detect the hedgehog cadavers without physical interaction. We therefore encourage future collaboration with the manufacturers of robotic lawn mowers to improve the safety for hedgehogs and other garden wildlife species. Abstract We tested the effects of 18 models of robotic lawn mowers in collision with dead European hedgehogs and quantified the results into six damage categories. All models were tested on four weight classes of hedgehogs, each placed in three different positions. None of the robotic lawn mowers tested was able to detect the presence of dependent juvenile hedgehogs (<200 g) and all models had to touch the hedgehogs to detect them. Some models caused extensive damage to the hedgehog cadavers, but there were noteworthy differences in the degree of harm inflicted, with some consistently causing no damage. Our results showed that the following technical features significantly increased the safety index of the robotic lawn mowers: pivoting blades, skid plates, and front wheel drive. Based on these findings, we encourage future collaboration with the manufacturers of robotic lawn mowers to improve the safety for hedgehogs and other garden wildlife species.
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Affiliation(s)
- Sophie Lund Rasmussen
- Wildlife Conservation Research Unit, The Recanati-Kaplan Centre, Department of Zoology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK;
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, DK-9220 Aalborg, Denmark; (J.L.N.); (C.P.)
- Correspondence: or ; Tel.: +45-2211-7268 or +44-787-1837-510
| | - Ane Elise Schrøder
- Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark;
- Fossil and Moclay Museum, Museum Mors, Skarrehagevej 8, DK-7900 Nykøbing Mors, Denmark
| | - Ronja Mathiesen
- Agilent Technologies Denmark ApS, Produktionsvej 42, DK-2600 Glostrup, Denmark;
| | - Jeppe Lund Nielsen
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, DK-9220 Aalborg, Denmark; (J.L.N.); (C.P.)
| | - Cino Pertoldi
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, DK-9220 Aalborg, Denmark; (J.L.N.); (C.P.)
| | - David W. Macdonald
- Wildlife Conservation Research Unit, The Recanati-Kaplan Centre, Department of Zoology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK;
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19
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Lukešová G, Voslarova E, Vecerek V, Vucinic M. Trends in intake and outcomes for European hedgehog (Erinaceus europaeus) in the Czech rescue centers. PLoS One 2021; 16:e0248422. [PMID: 33705491 PMCID: PMC7951812 DOI: 10.1371/journal.pone.0248422] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 02/25/2021] [Indexed: 11/19/2022] Open
Abstract
The European hedgehog (Erinaceus europaeus) is a species found in abundance throughout Europe. Nevertheless, it has seen a decline in some regions. This study aimed to analyze trends in intake and outcomes for hedgehogs admitted into rescue centers in the Czech Republic. In the period from 2010 to 2019, 16,967 European hedgehogs were admitted in 34 rescue centers in the Czech Republic. Most hedgehogs were admitted in September (25.30%) and October (22.14%), the fewest in March (0.96%). Most admitted hedgehogs were hoglets (59.49%). The treatment was successful in 44.39% of admitted hedgehogs; those were subsequently released into the wild. On average, they stayed in rescue centers for 48.77 days (median of 30 days). Death or euthanasia was an outcome for 25.27% and 3.15% of admitted hedgehogs, respectively. Only 0.59% of the hedgehogs remained in captivity with a permanent handicap. The highest release rate was achieved in hedgehogs admitted after falls into pits and other openings (83.19%), whereas the least success was achieved in poisoned hedgehogs (13.21%). An increasing trend (rSp = 0.9273, p < 0.01) was found in the number of hedgehogs admitted to rescue centers during the monitored period. Furthermore, not all of them required human care. Given the fact that less than a half of the admitted hedgehogs could be released, raising public awareness of this issue could help to avoid unnecessary interventions (especially in hoglets).
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Affiliation(s)
- Gabriela Lukešová
- Faculty of Veterinary Hygiene and Ecology, Department of Animal Protection and Welfare and Veterinary Public Health, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
- * E-mail:
| | - Eva Voslarova
- Faculty of Veterinary Hygiene and Ecology, Department of Animal Protection and Welfare and Veterinary Public Health, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Vladimir Vecerek
- Faculty of Veterinary Hygiene and Ecology, Department of Animal Protection and Welfare and Veterinary Public Health, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Marijana Vucinic
- Faculty of Veterinary Medicine, Department of Animal Hygiene, University of Belgrade, Belgrade, Serbia
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