The effect of COVID19 pandemic restrictions on an urban rodent population
Abstract Shortly after the enactment of restrictions aimed at limiting the spread of COVID-19, various local government and public health authorities around the world reported an increased sighting of rats. Such reports have yet to be empirically validated. Here we combined data from multi-catch rod...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-92301-0 |
| _version_ | 1818951995774468096 |
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| author | Miguel A. Bedoya-Pérez Michael P. Ward Max Loomes Iain S. McGregor Mathew S. Crowther |
| author_facet | Miguel A. Bedoya-Pérez Michael P. Ward Max Loomes Iain S. McGregor Mathew S. Crowther |
| author_sort | Miguel A. Bedoya-Pérez |
| collection | DOAJ |
| description | Abstract Shortly after the enactment of restrictions aimed at limiting the spread of COVID-19, various local government and public health authorities around the world reported an increased sighting of rats. Such reports have yet to be empirically validated. Here we combined data from multi-catch rodent stations (providing data on rodent captures), rodent bait stations (providing data on rodent activity) and residents’ complaints to explore the effects of a six week lockdown period on rodent populations within the City of Sydney, Australia. The sampling interval encompassed October 2019 to July 2020 with lockdown defined as the interval from April 1st to May 15th, 2020. Rodent captures and activity (visits to bait stations) were stable prior to lockdown. Captures showed a rapid increase and then decline during the lockdown, while rodent visits to bait stations declined throughout this period. There were no changes in the frequency of complaints during lockdown relative to before and after lockdown. There was a non-directional change in the geographical distribution of indices of rodent abundance suggesting that rodents redistributed in response to resource scarcity. We hypothesize that lockdown measures initially resulted in increased rodent captures due to sudden shortage of human-derived food resources. Rodent visits to bait stations might not show this pattern due to the nature of the binary data collected, namely the presence or absence of a visit. Relocation of bait stations driven by pest management goals may also have affected the detection of any directional spatial effect. We conclude that the onset of COVID-19 may have disrupted commensal rodent populations, with possible implications for the future management of these ubiquitous urban indicator species. |
| first_indexed | 2024-12-20T09:43:21Z |
| format | Article |
| id | doaj.art-bcbbc1340d854a9aa77afd00856136b1 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-20T09:43:21Z |
| publishDate | 2021-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-bcbbc1340d854a9aa77afd00856136b12022-12-21T19:44:48ZengNature PortfolioScientific Reports2045-23222021-06-0111111410.1038/s41598-021-92301-0The effect of COVID19 pandemic restrictions on an urban rodent populationMiguel A. Bedoya-Pérez0Michael P. Ward1Max Loomes2Iain S. McGregor3Mathew S. Crowther4Brain and Mind Centre, The University of SydneySydney School of Veterinary Science, The University of Sydney, Faculty of ScienceBrain and Mind Centre, The University of SydneyBrain and Mind Centre, The University of SydneySchool of Life and Environmental Sciences, The University of Sydney, Faculty of ScienceAbstract Shortly after the enactment of restrictions aimed at limiting the spread of COVID-19, various local government and public health authorities around the world reported an increased sighting of rats. Such reports have yet to be empirically validated. Here we combined data from multi-catch rodent stations (providing data on rodent captures), rodent bait stations (providing data on rodent activity) and residents’ complaints to explore the effects of a six week lockdown period on rodent populations within the City of Sydney, Australia. The sampling interval encompassed October 2019 to July 2020 with lockdown defined as the interval from April 1st to May 15th, 2020. Rodent captures and activity (visits to bait stations) were stable prior to lockdown. Captures showed a rapid increase and then decline during the lockdown, while rodent visits to bait stations declined throughout this period. There were no changes in the frequency of complaints during lockdown relative to before and after lockdown. There was a non-directional change in the geographical distribution of indices of rodent abundance suggesting that rodents redistributed in response to resource scarcity. We hypothesize that lockdown measures initially resulted in increased rodent captures due to sudden shortage of human-derived food resources. Rodent visits to bait stations might not show this pattern due to the nature of the binary data collected, namely the presence or absence of a visit. Relocation of bait stations driven by pest management goals may also have affected the detection of any directional spatial effect. We conclude that the onset of COVID-19 may have disrupted commensal rodent populations, with possible implications for the future management of these ubiquitous urban indicator species.https://doi.org/10.1038/s41598-021-92301-0 |
| spellingShingle | Miguel A. Bedoya-Pérez Michael P. Ward Max Loomes Iain S. McGregor Mathew S. Crowther The effect of COVID19 pandemic restrictions on an urban rodent population Scientific Reports |
| title | The effect of COVID19 pandemic restrictions on an urban rodent population |
| title_full | The effect of COVID19 pandemic restrictions on an urban rodent population |
| title_fullStr | The effect of COVID19 pandemic restrictions on an urban rodent population |
| title_full_unstemmed | The effect of COVID19 pandemic restrictions on an urban rodent population |
| title_short | The effect of COVID19 pandemic restrictions on an urban rodent population |
| title_sort | effect of covid19 pandemic restrictions on an urban rodent population |
| url | https://doi.org/10.1038/s41598-021-92301-0 |
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