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Whiting-Fawcett F, Blomberg AS, Troitsky T, Meierhofer MB, Field KA, Puechmaille SJ, Lilley TM. A Palearctic view of a bat fungal disease. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2024:e14265. [PMID: 38616727 DOI: 10.1111/cobi.14265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/02/2024] [Accepted: 01/20/2024] [Indexed: 04/16/2024]
Abstract
The fungal infection causing white-nose disease in hibernating bats in North America has resulted in dramatic population declines of affected species, since the introduction of the causative agent Pseudogymnoascus destructans. The fungus is native to the Palearctic, where it also infects several bat species, yet rarely causes severe pathology or the death of the host. Pseudogymnoascus destructans infects bats during hibernation by invading and digesting the skin tissue, resulting in the disruption of torpor patterns and consequent emaciation. Relations among pathogen, host, and environment are complex, and individuals, populations, and species respond to the fungal pathogen in different ways. For example, the Nearctic Myotis lucifugus responds to infection by mounting a robust immune response, leading to immunopathology often contributing to mortality. In contrast, the Palearctic M. myotis shows no significant immunological response to infection. This lack of a strong response, resulting from the long coevolution between the hosts and the pathogen in the pathogen's native range, likely contributes to survival in tolerant species. After more than 15 years since the initial introduction of the fungus to North America, some of the affected populations are showing signs of recovery, suggesting that the fungus, hosts, or both are undergoing processes that may eventually lead to coexistence. The suggested or implemented management methods of the disease in North America have encompassed, for example, the use of probiotics and fungicides, vaccinations, and modifying the environmental conditions of the hibernation sites to limit the growth of the pathogen, intensity of infection, or the hosts' responses to it. Based on current knowledge from Eurasia, policy makers and conservation managers should refrain from disrupting the ongoing evolutionary processes and adopt a holistic approach to managing the epizootic.
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Affiliation(s)
- F Whiting-Fawcett
- Department of Evolution, Ecology and Behaviour, University of Liverpool, Liverpool, UK
- BatLab Finland, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - A S Blomberg
- BatLab Finland, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - T Troitsky
- BatLab Finland, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - M B Meierhofer
- BatLab Finland, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - K A Field
- Department of Biology, Bucknell University, Lewisburg, Pennsylvania, USA
| | - S J Puechmaille
- Institut des Sciences de l'Évolution Montpellier (ISEM), University of Montpellier, CNRS, EPHE, IRD, Montpellier, France
- Institut Universitaire de France, Paris, France
| | - T M Lilley
- BatLab Finland, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
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Meierhofer MB, Johnson JS, Perez-Jimenez J, Ito F, Webela PW, Wiantoro S, Bernard E, Tanalgo KC, Hughes A, Cardoso P, Lilley T, Mammola S. Effective conservation of subterranean-roosting bats. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2024; 38:e14157. [PMID: 37504891 DOI: 10.1111/cobi.14157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 07/29/2023]
Abstract
Bats frequently inhabit caves and other subterranean habitats and play a critical role in subterranean food webs. With escalating threats to subterranean ecosystems, identifying the most effective measures to protect subterranean-roosting bats is critical. We conducted a meta-analysis to evaluate the effectiveness of conservation and management interventions for subterranean-roosting bats. We used network analyses to determine to what extent interventions for bats overlap those used for other subterranean taxa. We conducted our analyses with data extracted from 345 papers recommending a total of 910 conservation interventions. Gating of roost entrances was applied to preserve bat populations in 21 studies, but its effectiveness was unclear. Habitat restoration and disturbance reduction positively affected bat populations and bat behavior, respectively, in ≤4 studies. Decontamination was assessed in 2 studies and positively affected bat populations, particularly in studies focused on reducing fungal spores associated with white-nose syndrome in North America. Monitoring of bat populations as an effective conservation strategy was unclear and infrequently tested. Only 4% of bat studies simultaneously considered other subterranean organisms. However, effective interventions for bat conservation had similarities with all other organisms. If other subterranean organisms are considered when applying interventions to conserve bats, they might also benefit.
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Affiliation(s)
- Melissa B Meierhofer
- BatLab Finland, Finnish Museum of Natural History (LUOMUS), University of Helsinki, Helsinki, Finland
| | - Joseph S Johnson
- School of Information Technology, University of Cincinnati, Cincinnati, Ohio, USA
| | | | - Fernanda Ito
- BatLab Finland, Finnish Museum of Natural History (LUOMUS), University of Helsinki, Helsinki, Finland
- Laboratório de Ciência Aplicada à Conservação da Biodiversidade, Universidade Federal de Pernambuco, Recife, Brazil
| | - Paul W Webela
- Department of Forestry and Wildlife Management, Maasai Mara University, Narok, Kenya
| | - Sigit Wiantoro
- Museum Zoologicum Bogoriense, Research Center for Biosystematics & Evolution, National Research and Innovation Agency, Bogor, Indonesia
| | - Enrico Bernard
- Laboratório de Ciência Aplicada à Conservação da Biodiversidade, Universidade Federal de Pernambuco, Recife, Brazil
| | - Krizler C Tanalgo
- Ecology and Conservation Research Laboratory (Eco/Con Lab), Department of Biological Sciences, College of Science and Mathematics, University of Southern Mindanao, Cotabato, Philippines
| | - Alice Hughes
- School of Biological Sciences, University of Hong Kong, Hong Kong
- Center of Conservation Biology, Core Botanical Gardens, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Jinghong, China
| | - Pedro Cardoso
- Laboratory for Integrative Biodiversity Research (LIBRe), Finnish Museum of Natural History (LUOMUS), University of Helsinki, Helsinki, Finland
| | - Thomas Lilley
- BatLab Finland, Finnish Museum of Natural History (LUOMUS), University of Helsinki, Helsinki, Finland
| | - Stefano Mammola
- Laboratory for Integrative Biodiversity Research (LIBRe), Finnish Museum of Natural History (LUOMUS), University of Helsinki, Helsinki, Finland
- Molecular Ecology Group (MEG), Water Research Institute (IRSA), National Research Council (CNR), Verbania, Italy
- National Biodiversity Future Center, Palermo, Italy
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Mammola S, Meierhofer MB, Borges PA, Colado R, Culver DC, Deharveng L, Delić T, Di Lorenzo T, Dražina T, Ferreira RL, Fiasca B, Fišer C, Galassi DMP, Garzoli L, Gerovasileiou V, Griebler C, Halse S, Howarth FG, Isaia M, Johnson JS, Komerički A, Martínez A, Milano F, Moldovan OT, Nanni V, Nicolosi G, Niemiller ML, Pallarés S, Pavlek M, Piano E, Pipan T, Sanchez‐Fernandez D, Santangeli A, Schmidt SI, Wynne JJ, Zagmajster M, Zakšek V, Cardoso P. Towards evidence-based conservation of subterranean ecosystems. Biol Rev Camb Philos Soc 2022; 97:1476-1510. [PMID: 35315207 PMCID: PMC9545027 DOI: 10.1111/brv.12851] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 02/22/2022] [Accepted: 03/01/2022] [Indexed: 12/18/2022]
Abstract
Subterranean ecosystems are among the most widespread environments on Earth, yet we still have poor knowledge of their biodiversity. To raise awareness of subterranean ecosystems, the essential services they provide, and their unique conservation challenges, 2021 and 2022 were designated International Years of Caves and Karst. As these ecosystems have traditionally been overlooked in global conservation agendas and multilateral agreements, a quantitative assessment of solution-based approaches to safeguard subterranean biota and associated habitats is timely. This assessment allows researchers and practitioners to understand the progress made and research needs in subterranean ecology and management. We conducted a systematic review of peer-reviewed and grey literature focused on subterranean ecosystems globally (terrestrial, freshwater, and saltwater systems), to quantify the available evidence-base for the effectiveness of conservation interventions. We selected 708 publications from the years 1964 to 2021 that discussed, recommended, or implemented 1,954 conservation interventions in subterranean ecosystems. We noted a steep increase in the number of studies from the 2000s while, surprisingly, the proportion of studies quantifying the impact of conservation interventions has steadily and significantly decreased in recent years. The effectiveness of 31% of conservation interventions has been tested statistically. We further highlight that 64% of the reported research occurred in the Palearctic and Nearctic biogeographic regions. Assessments of the effectiveness of conservation interventions were heavily biased towards indirect measures (monitoring and risk assessment), a limited sample of organisms (mostly arthropods and bats), and more accessible systems (terrestrial caves). Our results indicate that most conservation science in the field of subterranean biology does not apply a rigorous quantitative approach, resulting in sparse evidence for the effectiveness of interventions. This raises the important question of how to make conservation efforts more feasible to implement, cost-effective, and long-lasting. Although there is no single remedy, we propose a suite of potential solutions to focus our efforts better towards increasing statistical testing and stress the importance of standardising study reporting to facilitate meta-analytical exercises. We also provide a database summarising the available literature, which will help to build quantitative knowledge about interventions likely to yield the greatest impacts depending upon the subterranean species and habitats of interest. We view this as a starting point to shift away from the widespread tendency of recommending conservation interventions based on anecdotal and expert-based information rather than scientific evidence, without quantitatively testing their effectiveness.
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Affiliation(s)
- Stefano Mammola
- Laboratory for Integrative Biodiversity Research (LIBRe)Finnish Museum of Natural History (LUOMUS), University of HelsinkiPohjoinen Rautatiekatu 13Helsinki00100Finland
- Molecular Ecology Group (dark‐MEG)Water Research Institute (IRSA), National Research Council (CNR)Largo Tonolli, 50Verbania‐Pallanza28922Italy
| | - Melissa B. Meierhofer
- BatLab Finland, Finnish Museum of Natural History Luomus (LUOMUS)University of HelsinkiPohjoinen Rautatiekatu 13Helsinki00100Finland
| | - Paulo A.V. Borges
- cE3c—Centre for Ecology, Evolution and Environmental Changes / Azorean Biodiversity Group / CHANGE – Global Change and Sustainability InstituteUniversity of Azores, Faculty of Agrarian Sciences and Environment (FCAA), Rua Capitão João d'ÀvilaPico da Urze, 9700‐042 Angra do HeroísmoAzoresPortugal
| | - Raquel Colado
- Departament of Ecology and HidrologyUniversity of MurciaMurcia30100Spain
| | - David C. Culver
- Department of Environmental ScienceAmerican University4400 Massachusetts Avenue, N.WWashingtonDC20016U.S.A.
| | - Louis Deharveng
- Institut de Systématique, Evolution, Biodiversité (ISYEB), CNRS UMR 7205, MNHN, UPMC, EPHEMuseum National d'Histoire Naturelle, Sorbonne UniversitéParisFrance
| | - Teo Delić
- SubBio Lab, Department of Biology, Biotechnical FacultyUniversity of LjubljanaJamnikarjeva 101Ljubljana1000Slovenia
| | - Tiziana Di Lorenzo
- Research Institute on Terrestrial Ecosystems (IRET‐CNR), National Research CouncilVia Madonna del Piano 10, 50019 Sesto FiorentinoFlorenceItaly
| | - Tvrtko Dražina
- Division of Zoology, Department of BiologyFaculty of Science, University of ZagrebRooseveltov Trg 6Zagreb10000Croatia
- Croatian Biospeleological SocietyRooseveltov Trg 6Zagreb10000Croatia
| | - Rodrigo L. Ferreira
- Center of Studies in Subterranean Biology, Biology Department, Federal University of LavrasCampus universitário s/n, Aquenta SolLavrasMG37200‐900Brazil
| | - Barbara Fiasca
- Department of Life, Health and Environmental SciencesUniversity of L'AquilaVia Vetoio 1, CoppitoL'Aquila67100Italy
| | - Cene Fišer
- SubBio Lab, Department of Biology, Biotechnical FacultyUniversity of LjubljanaJamnikarjeva 101Ljubljana1000Slovenia
| | - Diana M. P. Galassi
- Department of Life, Health and Environmental SciencesUniversity of L'AquilaVia Vetoio 1, CoppitoL'Aquila67100Italy
| | - Laura Garzoli
- Molecular Ecology Group (dark‐MEG)Water Research Institute (IRSA), National Research Council (CNR)Largo Tonolli, 50Verbania‐Pallanza28922Italy
| | - Vasilis Gerovasileiou
- Department of Environment, Faculty of EnvironmentIonian University, M. Minotou‐Giannopoulou strPanagoulaZakynthos29100Greece
- Hellenic Centre for Marine Research (HCMR), Institute of Marine BiologyBiotechnology and Aquaculture (IMBBC)Thalassocosmos, GournesCrete71500Greece
| | - Christian Griebler
- Department of Functional and Evolutionary Ecology, Division of LimnologyUniversity of ViennaDjerassiplatz 1Vienna1030Austria
| | - Stuart Halse
- Bennelongia Environmental Consultants5 Bishop StreetJolimontWA6014Australia
| | | | - Marco Isaia
- Department of Life Sciences and Systems BiologyUniversity of TurinVia Accademia Albertina, 13TorinoI‐10123Italy
| | - Joseph S. Johnson
- Department of Biological SciencesOhio University57 Oxbow TrailAthensOH45701U.S.A.
| | - Ana Komerički
- Croatian Biospeleological SocietyRooseveltov Trg 6Zagreb10000Croatia
| | - Alejandro Martínez
- Molecular Ecology Group (dark‐MEG)Water Research Institute (IRSA), National Research Council (CNR)Largo Tonolli, 50Verbania‐Pallanza28922Italy
| | - Filippo Milano
- Department of Life Sciences and Systems BiologyUniversity of TurinVia Accademia Albertina, 13TorinoI‐10123Italy
| | - Oana T. Moldovan
- Emil Racovita Institute of SpeleologyClinicilor 5Cluj‐Napoca400006Romania
- Romanian Institute of Science and TechnologySaturn 24‐26Cluj‐Napoca400504Romania
| | - Veronica Nanni
- Department of Life Sciences and Systems BiologyUniversity of TurinVia Accademia Albertina, 13TorinoI‐10123Italy
| | - Giuseppe Nicolosi
- Department of Life Sciences and Systems BiologyUniversity of TurinVia Accademia Albertina, 13TorinoI‐10123Italy
| | - Matthew L. Niemiller
- Department of Biological SciencesThe University of Alabama in Huntsville301 Sparkman Drive NWHuntsvilleAL35899U.S.A.
| | - Susana Pallarés
- Departamento de Biogeografía y Cambio GlobalMuseo Nacional de Ciencias Naturales, CSICCalle de José Gutiérrez Abascal 2Madrid28006Spain
| | - Martina Pavlek
- Croatian Biospeleological SocietyRooseveltov Trg 6Zagreb10000Croatia
- Ruđer Bošković InstituteBijenička cesta 54Zagreb10000Croatia
| | - Elena Piano
- Department of Life Sciences and Systems BiologyUniversity of TurinVia Accademia Albertina, 13TorinoI‐10123Italy
| | - Tanja Pipan
- ZRC SAZUKarst Research InstituteNovi trg 2Ljubljana1000Slovenia
- UNESCO Chair on Karst EducationUniversity of Nova GoricaGlavni trg 8Vipava5271Slovenia
| | | | - Andrea Santangeli
- Research Centre for Ecological Change, Organismal and Evolutionary Biology Research ProgrammeUniversity of HelsinkiViikinkaari 1Helsinki00014Finland
| | - Susanne I. Schmidt
- Institute of Hydrobiology, Biology Centre CASNa Sádkách 702/7České Budějovice370 05Czech Republic
- Department of Lake ResearchHelmholtz Centre for Environmental ResearchBrückstraße 3aMagdeburg39114Germany
| | - J. Judson Wynne
- Department of Biological SciencesCenter for Adaptable Western Landscapes, Box 5640, Northern Arizona UniversityFlagstaffAZ86011U.S.A.
| | - Maja Zagmajster
- SubBio Lab, Department of Biology, Biotechnical FacultyUniversity of LjubljanaJamnikarjeva 101Ljubljana1000Slovenia
| | - Valerija Zakšek
- SubBio Lab, Department of Biology, Biotechnical FacultyUniversity of LjubljanaJamnikarjeva 101Ljubljana1000Slovenia
| | - Pedro Cardoso
- Laboratory for Integrative Biodiversity Research (LIBRe)Finnish Museum of Natural History (LUOMUS), University of HelsinkiPohjoinen Rautatiekatu 13Helsinki00100Finland
- cE3c—Centre for Ecology, Evolution and Environmental Changes / Azorean Biodiversity Group / CHANGE – Global Change and Sustainability InstituteUniversity of Azores, Faculty of Agrarian Sciences and Environment (FCAA), Rua Capitão João d'ÀvilaPico da Urze, 9700‐042 Angra do HeroísmoAzoresPortugal
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