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...

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Autores principales:	Miguel A. Bedoya-Pérez, Michael P. Ward, Max Loomes, Iain S. McGregor, Mathew S. Crowther
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bcbbc1340d854a9aa77afd00856136b1
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spelling	oai:doaj.org-article:bcbbc1340d854a9aa77afd00856136b12021-12-02T17:12:25ZThe effect of COVID19 pandemic restrictions on an urban rodent population10.1038/s41598-021-92301-02045-2322https://doaj.org/article/bcbbc1340d854a9aa77afd00856136b12021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92301-0https://doaj.org/toc/2045-2322Abstract 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.Miguel A. Bedoya-PérezMichael P. WardMax LoomesIain S. McGregorMathew S. CrowtherNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q 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
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.
format	article
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
title	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_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_sort	effect of covid19 pandemic restrictions on an urban rodent population
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/bcbbc1340d854a9aa77afd00856136b1
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The effect of COVID19 pandemic restrictions on an urban rodent population

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