1
|
Giglio RM, Bowden CF, Brook RK, Piaggio AJ, Smyser TJ. Characterizing feral swine movement across the contiguous United States using neural networks and genetic data. Mol Ecol 2024; 33:e17489. [PMID: 39148259 DOI: 10.1111/mec.17489] [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: 04/16/2024] [Revised: 07/03/2024] [Accepted: 07/09/2024] [Indexed: 08/17/2024]
Abstract
Globalization has led to the frequent movement of species out of their native habitat. Some of these species become highly invasive and capable of profoundly altering invaded ecosystems. Feral swine (Sus scrofa × domesticus) are recognized as being among the most destructive invasive species, with populations established on all continents except Antarctica. Within the United States (US), feral swine are responsible for extensive crop damage, the destruction of native ecosystems, and the spread of disease. Purposeful human-mediated movement of feral swine has contributed to their rapid range expansion over the past 30 years. Patterns of deliberate introduction of feral swine have not been well described as populations may be established or augmented through small, undocumented releases. By leveraging an extensive genomic database of 18,789 samples genotyped at 35,141 single nucleotide polymorphisms (SNPs), we used deep neural networks to identify translocated feral swine across the contiguous US. We classified 20% (3364/16,774) of sampled animals as having been translocated and described general patterns of translocation using measures of centrality in a network analysis. These findings unveil extensive movement of feral swine well beyond their dispersal capabilities, including individuals with predicted origins >1000 km away from their sampling locations. Our study provides insight into the patterns of human-mediated movement of feral swine across the US and from Canada to the northern areas of the US. Further, our study validates the use of neural networks for studying the spread of invasive species.
Collapse
Affiliation(s)
- Rachael M Giglio
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, Fort Collins, Colorado, USA
| | - Courtney F Bowden
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, Fort Collins, Colorado, USA
| | - Ryan K Brook
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Antoinette J Piaggio
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, Fort Collins, Colorado, USA
| | - Timothy J Smyser
- United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, Fort Collins, Colorado, USA
| |
Collapse
|
2
|
Xiang T, Dong X, Shi L, Grenouillet G. Species range shifts of notorious invasive fish species in China under global changes: Insights and implications for management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 347:119197. [PMID: 37797520 DOI: 10.1016/j.jenvman.2023.119197] [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: 04/11/2023] [Revised: 06/20/2023] [Accepted: 09/30/2023] [Indexed: 10/07/2023]
Abstract
Due to global changes, e.g., climate change and trade globalization, China is facing an increasingly severe threat from invasive freshwater fish species, which have the potential to cause negative impacts across various aspects and pose significant challenges for their eradication once established. Therefore, prioritizing the understanding of invasive species' potential ranges and their determinants is vital for developing more targeted management strategies. Moreover, it is equally essential to consider the transitory range dynamics of invasive species that reflect changes in habitat availability and accessibility. Here, we used species distribution models (the maximum entropy algorithm) to assess the potential distributions of six notorious invasive fish species (i.e., Coptodon zillii, Cyprinus carpio, Gambusia affinis, Hemiculter leucisculus, Oreochromis mossambicus, and Oreochromis niloticus) in current and future (i.e., the 2030s, 2050s, and 2070s) periods along with their determinants, under two Shared Socio-economic Pathways scenarios (SSP1-2.6 and SSP5-8.5; global climate model: MRI-ESM2-0). Our results showed that the habitat suitability for the six species substantially benefited from temperature conditions (i.e., annual mean temperature or maximum temperature of warmest month). Throughout the given time periods, dramatic range expansions would occur for C. zillii, G. affinis, O. mossambicus, and O. niloticus, ranging from 38.61% to 291.90%. In contrast, the range of C. carpio would change slightly and irregularly, while H. leucisculus would contract marginally, with losses ranging from 1.06% to 12.60%. By the 2070s, species richness of these species would be relatively high in South, Central, and East China and parts of Southwest China. Furthermore, transitory fluctuations in the species ranges for all six species were observed throughout the entire time period (the 2030s-2070s). Given the range shifts for each species during different time periods, as well as time costs and budgets, adaptation strategies should be developed and implemented in the areas where they are most needed in each time period.
Collapse
Affiliation(s)
- Tao Xiang
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université Toulouse 3 Paul Sabatier, CNRS, IRD, Toulouse, 31062, France.
| | - Xianghong Dong
- College of Animal Science, Guizhou University, Guiyang, 550025, China.
| | - Lei Shi
- School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, China
| | - Gaël Grenouillet
- Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université Toulouse 3 Paul Sabatier, CNRS, IRD, Toulouse, 31062, France; Institut Universitaire de France, Paris, France
| |
Collapse
|
3
|
Prisnee TL, Rahman R, Fouhse JM, Van Kessel AG, Brook RK, Willing BP. Tracking the fecal mycobiome through the lifespan of production pigs and a comparison to the feral pig. Appl Environ Microbiol 2023; 89:e0097723. [PMID: 37902410 PMCID: PMC10686082 DOI: 10.1128/aem.00977-23] [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: 06/09/2023] [Accepted: 09/22/2023] [Indexed: 10/31/2023] Open
Abstract
IMPORTANCE This work provides evidence that early-life fungal community composition, or host genetics, influences long-term mycobiome composition. In addition, this work provides the first comparison of the feral pig mycobiome to the mycobiome of intensively raised pigs.
Collapse
Affiliation(s)
- Tausha L. Prisnee
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Rajibur Rahman
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Janelle M. Fouhse
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Andrew G. Van Kessel
- Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ryan K. Brook
- College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Benjamin P. Willing
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
4
|
MacDonald AM, Brook RK. Unregulated Online Sales are High-Risk Sources of Domestic Swine (Sus scrofa) in Canada: Implications for Invasive Wild Pig and AfricanSwine Fever Risk Preparedness. J Wildl Dis 2023; 59:509-514. [PMID: 37170424 DOI: 10.7589/jwd-d-22-00151] [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] [Received: 10/09/2022] [Accepted: 02/20/2023] [Indexed: 05/13/2023]
Abstract
Free-ranging wild pig (Sus scrofa) populations may cause widespread environmental damage and transmit diseases at the wildlife-livestock interface. For example, African swine fever (ASF) is a highly contagious viral disease of pigs capable of causing catastrophic economic losses. Prevention and preparedness for ASF require understanding wild and domestic pig movements and distribution. We characterized a "grey" swine market and described the risks it poses, contributing to the threats associated with wild pig populations. We monitored www.kijiji.ca, a Canadian internet classified advertising service, for sales of domestic wild boar, pot-bellied pigs, other breeds, and their hybrids across Canada from 28 April to 30 June 2021. Data collected included seller-defined breed, age, sex, number for sale, sexual intactness, presence of identifying tags or tattoos, and the date and location of listings. Advertisement locations were mapped and compared with existing wild pig distributions, identifying areas new populations might be established, and existing populations supplemented or genetically diversified. We identified 151 advertisements on Kijiji: 34% (n=52/151) from Ontario, 29% (n=44/151) from Alberta, 41% (n=62/151) from existing wild pig populations, and 59% (n=89/151) from areas where wild pigs have not yet been identified. We propose requiring the use of individual animal identifiers (tags/tattoos), genetic analysis, and mandatory reporting for all pig sales in Canada to aid in ASF preparedness and to increase regulation and enforcement of the online swine market.
Collapse
Affiliation(s)
- Amanda M MacDonald
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, 491 Gordon Street, Guelph, Ontario N1G 2W1, Canada
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Ryan K Brook
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, Saskatchewan S7N 5A8, Canada
| |
Collapse
|
5
|
Chinn SM, Smyser T, Beasley JC. Variance in offspring sex ratio and maternal allocation in a highly invasive mammal. Ecol Evol 2023; 13:e10136. [PMID: 37250446 PMCID: PMC10213710 DOI: 10.1002/ece3.10136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/01/2023] [Accepted: 05/09/2023] [Indexed: 05/31/2023] Open
Abstract
Skewed sex ratios at birth are widely reported in wild populations, however, the extent to which parents are able to modulate the sex ratio of offspring to maximize their own fitness remains unclear. This is particularly true for highly polytocous species as maximizing fitness may include trade-offs between sex ratio and the size and number of offspring in litters. In such cases, it may be adaptive for mothers to adjust both the number of offspring per litter and offspring sex to maximize individual fitness. Investigating maternal sex allocation in wild pigs (Sus scrofa) under stochastic environmental conditions, we predicted that under favorable conditions, high-quality mothers (larger and older) would produce male-biased litters and invest more in producing larger litters with more males. We also predicted sex ratio would vary relative to litter size, with a male-bias among smaller litters. We found evidence that increasing wild boar ancestry, maternal age and condition, and resource availability may weakly contribute to male-biased sex ratio, however, unknown factors not measured in this study are assumed to be more influential. High-quality mothers allocated more resources to litter production, but this relationship was driven by adjustment of litter size, not sex ratio. There was no relationship between sex ratio and litter size. Collectively, our results emphasized that adjustment of litter size appeared to be the primary reproductive characteristic manipulated in wild pigs to increase fitness rather than adjustment of offspring sex ratio.
Collapse
Affiliation(s)
- Sarah M. Chinn
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural ResourcesUniversity of GeorgiaAikenSouth CarolinaUSA
| | - Timothy Smyser
- National Wildlife Research Center, United States Department of Agriculture, Wildlife ServicesFort CollinsColoradoUSA
| | - James C. Beasley
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural ResourcesUniversity of GeorgiaAikenSouth CarolinaUSA
| |
Collapse
|
6
|
Thakor JC, Dinesh M, Manikandan R, Bindu S, Sahoo M, Sahoo D, Dhawan M, Pandey MK, Tiwari R, Emran TB, Dhama K, Chaicumpa W. Swine coronaviruses (SCoVs) and their emerging threats to swine population, inter-species transmission, exploring the susceptibility of pigs for SARS-CoV-2 and zoonotic concerns. Vet Q 2022; 42:125-147. [PMID: 35584308 PMCID: PMC9225692 DOI: 10.1080/01652176.2022.2079756] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 03/23/2022] [Accepted: 05/16/2022] [Indexed: 12/23/2022] Open
Abstract
Swine coronaviruses (SCoVs) are one of the most devastating pathogens affecting the livelihoods of farmers and swine industry across the world. These include transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), porcine respiratory coronavirus (PRCV), porcine hemagglutinating encephalomyelitis virus (PHEV), swine acute diarrhea syndrome coronavirus (SADS-CoV), and porcine delta coronavirus (PDCoV). Coronaviruses infect a wide variety of animal species and humans because these are having single stranded-RNA that accounts for high mutation rates and thus could break the species barrier. The gastrointestinal, cardiovascular, and nervous systems are the primary organ systems affected by SCoVs. Infection is very common in piglets compared to adult swine causing high mortality in the former. Bat is implicated to be the origin of all CoVs affecting animals and humans. Since pig is the only domestic animal in which CoVs cause a wide range of diseases; new coronaviruses with high zoonotic potential could likely emerge in the future as observed in the past. The recently emerged severe acute respiratory syndrome coronavirus virus-2 (SARS-CoV-2), causing COVID-19 pandemic in humans, has been implicated to have animal origin, also reported from few animal species, though its zoonotic concerns are still under investigation. This review discusses SCoVs and their epidemiology, virology, evolution, pathology, wildlife reservoirs, interspecies transmission, spill-over events and highlighting their emerging threats to swine population. The role of pigs amid ongoing SARS-CoV-2 pandemic will also be discussed. A thorough investigation should be conducted to rule out zoonotic potential of SCoVs and to design appropriate strategies for their prevention and control.
Collapse
Affiliation(s)
- Jigarji C. Thakor
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Murali Dinesh
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Rajendran Manikandan
- Immunology Section, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Suresh Bindu
- Immunology Section, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Monalisa Sahoo
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Diptimayee Sahoo
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Manish Dhawan
- Department of Microbiology, Punjab Agricultural University, Ludhiana, India
- The Trafford Group of Colleges, Manchester, United Kingdom
| | - Megha Katare Pandey
- Department of Translational Medicine Center, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Ruchi Tiwari
- Department of Veterinary Microbiology and Immunology, College of Veterinary Sciences, Uttar Pradesh Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, India
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Wanpen Chaicumpa
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| |
Collapse
|
7
|
Introduced, Mixed, and Peripheral: Conservation of Mitochondrial-DNA Lineages in the Wild Boar (Sus scrofa L.) Population in the Urals. DIVERSITY 2022. [DOI: 10.3390/d14110916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Translocations and introductions are important events that allow organisms to overcome natural barriers. The genetic background of colonization success and genetic consequences of the establishment of populations in new environments are of great interest for predicting species’ colonization success. The wild boar has been introduced into many parts of the world. We analyzed sequences of the mitochondrial-DNA control region in the wild boars introduced into the Ural region and compared them with sequences from founder populations (from Europe, the Caucasus, Central Asia, and the Far East). We found that the introduced population has high genetic diversity. Haplotypes from all the major phylogenetic clades were detected in the analyzed group of the animals from the Urals. In this group, no haplotypes identical to Far Eastern sequences were detectable despite a large number of founders from that region. The contribution of lineages originating from Eastern Europe was greater than expected from the proportions (%) of European and Asian animals in the founder populations. This is the first study on the genetic diversity and structure of a wild boar population of mixed origin at the northern periphery of this species’ geographical range.
Collapse
|
8
|
Markov N, Economov A, Hjeljord O, Rolandsen CM, Bergqvist G, Danilov P, Dolinin V, Kambalin V, Kondratov A, Krasnoshapka N, Kunnasranta M, Mamontov V, Panchenko D, Senchik A. The wild boar
Sus scrofa
in northern Eurasia: a review of range expansion history, current distribution, factors affecting the northern distributional limit, and management strategies. Mamm Rev 2022. [DOI: 10.1111/mam.12301] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Niсkolay Markov
- Institute of Plant and Animal Ecology Ural Branch Russian Academy of Sciences 620144 Marta Str. 202 Ekaterinburg Russia
| | - Alexander Economov
- Russian Research Institute of Game Management and Fur Farming 610000 Preobrazhenskaya str. 79 Kirov Russia
| | - Olav Hjeljord
- Norwegian University of Life Sciences Elizabeth Stephansens vei 15 1430 Ås Norway
| | - Christer M. Rolandsen
- Norwegian Institute for Nature Research P.O. Box 5685 Torgarden NO‐7485 Trondheim Norway
| | - Göran Bergqvist
- Swedish Association for Hunting and Wildlife Management Öster Malma SE‐611 91 Nyköping Sweden
- Southern Swedish Forest Research Centre Swedish University of Agricultural Sciences PO Box 49 SE‐230 53 Alnarp Sweden
| | - Pjotr Danilov
- Institute of Biology of Karelian Research Centre Russian Academy of Sciences 185910, 11 Pushkinskaya Street Petrozavodsk Karelia Russia
| | - Vadim Dolinin
- Far Eastern Branch of Russian Research Institute of Game Management and Fur Farming 680000 L. Tolstogo str. 15a Khabarovsk Russia
| | - Victor Kambalin
- Irkutsk State Agrarian University 664038, Irkutsk region, Irkutsk district Molodezhny Russia
| | - Alexander Kondratov
- Irkutsk State Agrarian University 664038, Irkutsk region, Irkutsk district Molodezhny Russia
| | - Nikolay Krasnoshapka
- West‐Siberian Branch of Russian Research Institute of Game Management and Fur Farming 630108, Parkhomenko str., 26 Novosibirsk Russia
| | - Mervi Kunnasranta
- Natural Resources Institute Finland Yliopistokatu 6 80130 Joensuu Finland
| | - Victor Mamontov
- Laboratory for Biological Resources and Ethnography Institute of Biogeography and Genetic Resources, FECIAR Ural Branch RAS 163000 Arkhangelsk Russia
| | - Danila Panchenko
- Institute of Biology of Karelian Research Centre Russian Academy of Sciences 185910, 11 Pushkinskaya Street Petrozavodsk Karelia Russia
| | - Alexander Senchik
- OOO “Amuskaya Promislovaya Kompania” 675000, Gorkogo, 252 Blagoveschensk Amurskaya Oblast Russia
| |
Collapse
|
9
|
Kramer C, Boudreau MR, Miller RS, Powers R, VerCauteren K, Brook RK. Summer habitat use and movements of invasive wild pigs (Sus scrofa) in Canadian agro-ecosystems. CAN J ZOOL 2022. [DOI: 10.1139/cjz-2021-0116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resource selection informs understanding of a species’ ecology and is especially pertinent for invasive species. Since introduced to Canada, wild pigs (Sus scrofa Linnaeus, 1978) remain understudied despite recognized negative impacts to native and agricultural systems globally. Elsewhere in North America, pigs typically use forests and forage in agricultural crops. We hypothesized Canadian wild pigs would behave similarly and using GPS locations from 15 individuals we examined diel and seasonal resource selection and movement in the Canadian prairie region. Forests were predominately selected during the day, while corn (Zea mays L.), oilseeds, and wheat (Triticum aestivum L.) were predominately selected at night. Forests and corn were consistently selected throughout the growing season. Wetlands and forests showed greater use rates than other habitats, with evident trade-offs as crop use increased with the timing of maturation. Activity was consistent with foraging in growing crops. Results indicate diel patterns were likely a function of short-term needs to avoid daytime anthropogenic risk, while seasonal patterns demonstrate how habitats that fill multiple functional roles – food, cover, and thermoregulation – can be optimized. Understanding selection by invasive species is an important step in understanding their potential environmental impacts in novel environments and informs their management.
Collapse
Affiliation(s)
- Corey Kramer
- University of Saskatchewan College of Agriculture and Bioresources, 98627, Animal and Poultry Science, Saskatoon, Saskatchewan, Canada
| | - Melanie R. Boudreau
- Mississippi State University College of Forest Resources, 237137, Wildlife, Fisheries, and Aquaculture, Mississippi State, Mississippi, United States
| | | | - Ryan Powers
- USDA, 1097, Bismarck, North Dakota, United States
| | - Kurt VerCauteren
- USDA-APHIS National Wildlife Research Center, 93514, Fort Collins, Colorado, United States
| | - Ryan K. Brook
- University of Saskatchewan College of Agriculture and Bioresources, 98627, Department of Animal and Poultry Science & Indigenous Land Management Institute, Saskatoon, Saskatchewan, Canada,
| |
Collapse
|
10
|
Koen EL, Newton EJ, Ellington EH. Evaluating potential sources of invasive wild pigs in Ontario. Ecol Evol 2021; 11:14744-14757. [PMID: 34765138 PMCID: PMC8571589 DOI: 10.1002/ece3.8160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/25/2021] [Accepted: 08/31/2021] [Indexed: 11/10/2022] Open
Abstract
Invasive wild pigs (Sus scrofa) are considered one of the most damaging species globally, and once they become established in an area, they are notoriously difficult to eliminate. As such, identifying the potential pathways of invasion, especially in places with emerging populations, is critical for preventing new or continued invasion. Wild pigs have been reported in Ontario, Canada, in recent years. We tested four nonexclusive hypotheses about the source of wild pigs in Ontario: (a) escapees from captive sources within Ontario; (b) invasion from neighboring jurisdictions; (c) existing wild populations within Ontario; and (d) translocation and illegal release. We found that sightings of Eurasian wild boar were closer to premises with wild boar than were random locations; wild boar sightings were an average of 16.3 km (SD = 25.4 km, min = 0.2 km, n = 20) from premises with wild boar. We also found that sightings of domestic pigs were closer to domestic pig farms than expected. Sightings of wild pigs in groups of more than four animals were rare. Our results suggest that wild pigs observed in Ontario are recent escapes from captivity, recognizing that there may be established groups of wild pigs that we have not yet detected. While not common, we also received reports indicating that in the past, wild pigs have been translocated and illegally released. Other North American jurisdictions that have been successful at eliminating wild pigs have removed existing populations and changed regulations to limit future invasion, such as prohibiting possession and transport of wild boar and prohibiting hunting of wild pigs.
Collapse
Affiliation(s)
- Erin L. Koen
- Wildlife Research and Monitoring SectionOntario Ministry of Northern DevelopmentMines, Natural Resources, and ForestryPeterboroughONCanada
| | - Erica J. Newton
- Wildlife Research and Monitoring SectionOntario Ministry of Northern DevelopmentMines, Natural Resources, and ForestryPeterboroughONCanada
| | - E. Hance Ellington
- Department of Wildlife Ecology and ConservationRange Cattle Research and Education CenterUniversity of FloridaOnaFloridaUSA
| |
Collapse
|
11
|
Causes and consequences of lags in basic and applied research into feral wildlife ecology: the case for feral horses. Basic Appl Ecol 2021. [DOI: 10.1016/j.baae.2021.03.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
12
|
Outreach increases detections of an invasive species in a crowdsourced monitoring program. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02526-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
13
|
Pollock LA, Newton EJ, Koen EL. Predicting high-risk areas for African swine fever spread at the wild-domestic pig interface in Ontario. Prev Vet Med 2021; 191:105341. [PMID: 33848740 DOI: 10.1016/j.prevetmed.2021.105341] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 02/15/2021] [Accepted: 03/29/2021] [Indexed: 10/21/2022]
Abstract
The probability of disease transmission among livestock premises via spillover from wildlife vectors depends on interacting ecological, demographic, and behavioural variables. Wild pigs (Sus scrofa) act as vectors and reservoirs of many diseases, including African Swine Fever (ASF), a highly lethal and contagious viral disease that affects both wild and domestic swine. Wild pigs play a significant role in the spread of ASF in geographic locations where the disease is present. Planning and preparedness will ensure that swift action can be taken to control ASF if it is introduced into North America. We used a network to predict the highest risk areas for ASF spread in Ontario, Canada given the distribution of wild pig sightings and other risk factors for wild pig presence and movement on the landscape. We used network nodes to represent the presence of domestic pig farms in a defined area, and we weighted network edges by the probability of ASF virus movement between nodes via movement of wild pigs. Our network models predicted that central Ontario has relatively high network closeness, suggesting that this area has a relatively high risk of virus exposure. These highly connected areas tended to also have the highest domestic pig farm density within a node. Central and eastern Ontario had the highest predicted network betweenness, suggesting that these areas are important for controlling virus flow across the province. We detected 10 communities or clusters within the overall network, where nodes were highly connected locally and relatively less connected to the rest of the network. Predicting areas with a high risk of exposure to the ASF virus due to wild pig movement in Ontario will guide managers on where to focus surveillance for ASF in the wild pig population and where to heighten biosecurity within commercial and backyard pig farms, ensuring that managers are prepared to act quickly to limit spread of ASF if the virus is introduced.
Collapse
Affiliation(s)
- Lisa A Pollock
- Trent University, Department of Biology, Peterborough, ON, Canada; Ministry of Natural Resources and Forestry, Wildlife Research and Monitoring Section, Peterborough, ON, Canada
| | - Erica J Newton
- Ministry of Natural Resources and Forestry, Wildlife Research and Monitoring Section, Peterborough, ON, Canada
| | - Erin L Koen
- Trent University, Department of Biology, Peterborough, ON, Canada; Ministry of Natural Resources and Forestry, Wildlife Research and Monitoring Section, Peterborough, ON, Canada.
| |
Collapse
|
14
|
Snow NP, Halseth JM, Glow MP, Lavelle MJ, Fischer JW, Vannatta EH, VerCauTeren KC. Daily and Landscape Influences of Species Visitation to Toxic Bait Sites for Wild Pigs. WILDLIFE SOC B 2021. [DOI: 10.1002/wsb.1159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nathan P. Snow
- USDA/APHIS/Wildlife Services National Wildlife Research Center 4101 LaPorte Ave. Fort Collins CO 80521 USA
| | - Joseph M. Halseth
- USDA/APHIS/Wildlife Services National Wildlife Research Center 4101 LaPorte Ave. Fort Collins CO 80521 USA
| | - Michael P. Glow
- USDA/APHIS/Wildlife Services National Wildlife Research Center 4101 LaPorte Ave. Fort Collins CO 80521 USA
| | - Michael J. Lavelle
- USDA/APHIS/Wildlife Services National Wildlife Research Center 4101 LaPorte Ave. Fort Collins CO 80521 USA
| | - Justin W. Fischer
- USDA/APHIS/Wildlife Services National Wildlife Research Center 4101 LaPorte Ave. Fort Collins CO 80521 USA
| | - Eric H. Vannatta
- USDA/APHIS/Wildlife Services National Wildlife Research Center 4101 LaPorte Ave. Fort Collins CO 80521 USA
| | - Kurt C. VerCauTeren
- USDA/APHIS/Wildlife Services National Wildlife Research Center 4101 LaPorte Ave. Fort Collins CO 80521 USA
| |
Collapse
|
15
|
Kurian A, Hall WF, Neumann EJ. African swine fever: a New Zealand perspective on epidemiological risk factors for its occurrence. N Z Vet J 2021; 69:135-146. [PMID: 33570468 DOI: 10.1080/00480169.2021.1875934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
This article reviews key epidemiological and clinical features of African swine fever (ASF). We identify particular aspects of New Zealand's pig populations (commercial, non-commercial, and wild) that may affect the risk of disease entry or spread. Review of published literature is supplemented by analysis of demographic and spatial aspects of the New Zealand commercial, non-commercial, and feral pig populations to provide context around risk factors for the disease that are most relevant to New Zealand. The current Eurasian outbreak of ASF, including recent spread into Oceania, has increased the risk of an incursion of the disease into New Zealand. Large volumes of fresh pork importation (including from countries affected by ASF), large non-commercial pig populations with substantial spatial overlap with the country's commercial industry, limited monitoring of compliance with waste food feeding regulations, and lack of mandatory premises identification for non-commercial pig holdings would likely contribute to the risk of spread of ASF in the event of an incursion. Awareness amongst veterinarians of these risk factors will contribute to national biosecurity and disease preparedness efforts in New Zealand.
Collapse
Affiliation(s)
- A Kurian
- Epi-Insight Limited, East Taieri, New Zealand
| | - W F Hall
- William Hall and Associates, Googong, NSW, Australia
| | - E J Neumann
- Epi-Insight Limited, East Taieri, New Zealand
| |
Collapse
|
16
|
Coughlan NE, Cunningham EM, Potts S, McSweeney D, Healey E, Dick JTA, Vong GYW, Crane K, Caffrey JM, Lucy FE, Davis E, Cuthbert RN. Steam and Flame Applications as Novel Methods of Population Control for Invasive Asian Clam (Corbicula fluminea) and Zebra Mussel (Dreissena polymorpha). ENVIRONMENTAL MANAGEMENT 2020; 66:654-663. [PMID: 32627081 PMCID: PMC7522108 DOI: 10.1007/s00267-020-01325-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Control strategies for established populations of invasive alien species can be costly and complex endeavours, which are frequently unsuccessful. Therefore, rapid-reaction techniques that are capable of maximising efficacy whilst minimising environmental damage are urgently required. The Asian clam (Corbicula fluminea Müller, 1774), and the zebra mussel (Dreissena polymorpha Pallas, 1771), are invaders capable of adversely affecting the functioning and biodiversity of freshwater ecosystems. Despite efforts to implement substantial population-control measures, both species continue to spread and persist within freshwater environments. As bivalve beds often become exposed during low-water conditions, this study examined the efficacy of steam-spray (≥100 °C, 350 kPa) and open-flame burn treatments (~1000 °C) to kill exposed individuals. Direct steam exposure lasting for 5 min caused 100% mortality of C. fluminea buried at a depth of 3 cm. Further, combined rake and thermal shock treatments, whereby the substrate is disturbed between each application of either a steam or open flame, caused 100% mortality of C. fluminea specimens residing within a 4-cm deep substrate patch, following three consecutive treatment applications. However, deeper 8-cm patches and water-saturated substrate reduced maximum bivalve species mortality rates to 77% and 70%, respectively. Finally, 100% of D. polymorpha specimens were killed following exposure to steam and open-flame treatments lasting for 30 s and 5 s, respectively. Overall, our results confirm the efficacy of thermal shock treatments as a potential tool for substantial control of low-water-exposed bivalves. Although promising, our results require validation through upscaling to field application, with consideration of other substrate types, increased substrate depth, greater bivalve densities, non-target and long-term treatment effects.
Collapse
Affiliation(s)
- Neil E Coughlan
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK.
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK.
- School of Biological, Earth and Environmental Sciences, University College Cork, Distillery Fields, North Mall, Cork, Ireland.
| | - Eoghan M Cunningham
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
| | - Stephen Potts
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
| | - Diarmuid McSweeney
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
| | - Emma Healey
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
| | - Jaimie T A Dick
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
| | - Gina Y W Vong
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
| | - Kate Crane
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
| | - Joe M Caffrey
- INVAS Biosecurity Ltd., 82 Lakelands Close, Stillorgan, Co Dublin, Ireland
| | - Frances E Lucy
- Centre for Environmental Research, Innovation & Sustainability, Institute of Technology Sligo, Ash Lane, Co, Sligo, Ireland
| | - Eithne Davis
- Centre for Environmental Research, Innovation & Sustainability, Institute of Technology Sligo, Ash Lane, Co, Sligo, Ireland
| | - Ross N Cuthbert
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
- Queen's Marine Laboratory, Queen's University Belfast, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK
- GEOMAR, Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, Germany
| |
Collapse
|