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Artificial Attractants: Implications for Disease Management in Deer.

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Title: Artificial Attractants: Implications for Disease Management in Deer.
Authors: Gritter, Kelsey1 (AUTHOR) kgritter@ualberta.ca, Pybus, Margo1,2 (AUTHOR), Lewis, Mark A.1,3,4 (AUTHOR), Merrill, Evelyn1 (AUTHOR)
Source: Ecology & Evolution (20457758). Feb2025, Vol. 15 Issue 2, p1-11. 11p.
Subject Terms: *Chronic wasting disease, Mule deer, Prion diseases, Disease management, Deer
Abstract: Chronic wasting disease (CWD) is a prion disease that infects cervid species by direct and environmental transmission and is invariably fatal. CWD spread can be promoted by the attraction of animals to "hotspots" such as hay bales and grain bags stored in fields and at farm sites. The density and location of hotspots may impact contact rates. We used an individual‐based movement model of mule deer (Odocoileus hemionus) to investigate the effects of density and configuration of hotspots (hereafter artificial attractants, AA) on contact rates at a constant density of 1 deer/km2 during winter. The model tracks when two deer from the same or different groups come into contact under 6 AA densities (0–1 AA/km2) and 6 AA configurations. We compared placing AA randomly versus clustered around farms, and removing them randomly versus biased by proximity to preferred habitat. Overall, the number of unique contacts per individual and the number of unique deer visiting an AA increased, and the number of AAs used by each deer decreased as AA density declined. Selectively removing field attractants near preferred habitat resulted in a larger increase in contacts per deer, with deer contacting more and different individuals, fewer deer using the remaining AA, and fewer visits per AA than random removal. There was a greater increase in contact rates when reducing AA density at farms by randomly removing all AA at a farm compared to randomly removing individual AA across farms. Deer responses to AA removal may not be as straightforward as originally believed. Deer contacts may increase, not decrease, with AA removal because deer are attracted to the remaining AA. Under moderate deer densities, AA removal may require a broad‐scale, "all or nothing" approach to prevent deer from concentrating at remaining AA, but concomitantly lowering deer density needs further assessment. [ABSTRACT FROM AUTHOR]
Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 183853701
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PubTypeId: academicJournal
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  Data: Artificial Attractants: Implications for Disease Management in Deer.
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  Data: <searchLink fieldCode="AR" term="%22Gritter%2C+Kelsey%22">Gritter, Kelsey</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kgritter@ualberta.ca</i><br /><searchLink fieldCode="AR" term="%22Pybus%2C+Margo%22">Pybus, Margo</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lewis%2C+Mark+A%2E%22">Lewis, Mark A.</searchLink><relatesTo>1,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Merrill%2C+Evelyn%22">Merrill, Evelyn</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Ecology+%26+Evolution+%2820457758%29%22">Ecology & Evolution (20457758)</searchLink>. Feb2025, Vol. 15 Issue 2, p1-11. 11p.
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  Data: *<searchLink fieldCode="DE" term="%22Chronic+wasting+disease%22">Chronic wasting disease</searchLink><br /><searchLink fieldCode="DE" term="%22Mule+deer%22">Mule deer</searchLink><br /><searchLink fieldCode="DE" term="%22Prion+diseases%22">Prion diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Disease+management%22">Disease management</searchLink><br /><searchLink fieldCode="DE" term="%22Deer%22">Deer</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Chronic wasting disease (CWD) is a prion disease that infects cervid species by direct and environmental transmission and is invariably fatal. CWD spread can be promoted by the attraction of animals to "hotspots" such as hay bales and grain bags stored in fields and at farm sites. The density and location of hotspots may impact contact rates. We used an individual‐based movement model of mule deer (Odocoileus hemionus) to investigate the effects of density and configuration of hotspots (hereafter artificial attractants, AA) on contact rates at a constant density of 1 deer/km2 during winter. The model tracks when two deer from the same or different groups come into contact under 6 AA densities (0–1 AA/km2) and 6 AA configurations. We compared placing AA randomly versus clustered around farms, and removing them randomly versus biased by proximity to preferred habitat. Overall, the number of unique contacts per individual and the number of unique deer visiting an AA increased, and the number of AAs used by each deer decreased as AA density declined. Selectively removing field attractants near preferred habitat resulted in a larger increase in contacts per deer, with deer contacting more and different individuals, fewer deer using the remaining AA, and fewer visits per AA than random removal. There was a greater increase in contact rates when reducing AA density at farms by randomly removing all AA at a farm compared to randomly removing individual AA across farms. Deer responses to AA removal may not be as straightforward as originally believed. Deer contacts may increase, not decrease, with AA removal because deer are attracted to the remaining AA. Under moderate deer densities, AA removal may require a broad‐scale, "all or nothing" approach to prevent deer from concentrating at remaining AA, but concomitantly lowering deer density needs further assessment. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1002/ece3.71013
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 11
        StartPage: 1
    Subjects:
      – SubjectFull: Chronic wasting disease
        Type: general
      – SubjectFull: Mule deer
        Type: general
      – SubjectFull: Prion diseases
        Type: general
      – SubjectFull: Disease management
        Type: general
      – SubjectFull: Deer
        Type: general
    Titles:
      – TitleFull: Artificial Attractants: Implications for Disease Management in Deer.
        Type: main
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          Name:
            NameFull: Gritter, Kelsey
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            NameFull: Pybus, Margo
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            NameFull: Lewis, Mark A.
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            NameFull: Merrill, Evelyn
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            – D: 01
              M: 02
              Text: Feb2025
              Type: published
              Y: 2025
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