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Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan
Until now, little is known about the population structure and mobility of temperate dung beetles including the rainbow scarab, Phanaeus vindex (MacLeay 1819), although this knowledge is essential for their conservation as pastures become increasingly rare and the landscape fragmented by monocultures...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10317053/ https://www.ncbi.nlm.nih.gov/pubmed/37399115 http://dx.doi.org/10.1093/jisesa/iead050 |
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author | Wassmer, Thomas Armstrong, Elise |
author_facet | Wassmer, Thomas Armstrong, Elise |
author_sort | Wassmer, Thomas |
collection | PubMed |
description | Until now, little is known about the population structure and mobility of temperate dung beetles including the rainbow scarab, Phanaeus vindex (MacLeay 1819), although this knowledge is essential for their conservation as pastures become increasingly rare and the landscape fragmented by monocultures and urbanization. Here, we estimated population size, longevity, and dispersal within and between pastures. For 3 yr, we life-trapped beetles every week on 2 adjacent farms in SE Michigan, determined their sex, male morph, and size, and marked their elytra with individual tattoo patterns before releasing them. We marked a total of 470 rainbow scarabs of which 14 were recaptured once and 2 were recaptured twice. The sex ratio was not significantly sex-biased but fluctuated between months with no apparent uniformity between years. While the minor to major male ratios were unbiased in 2019 and 2020, they were marginally minor-biased in 2021. The gross population estimates for the 2 farms were 458–491 and 217 rainbow scarabs, respectively. Beetles traveled distances of up to 178 m within farms. No beetles dispersed between farms. One large female was recaptured after 338 days documenting the first cold hardiness and long lifespan of a cold-temperate dung beetle species in the wild. The low population estimates on both farms indicate 2 vulnerable populations with no or extremely limited connectivity. Supplementary funding for the land stewardship of small-scale cattle farmers could stabilize populations of native dung beetles and maintain their ecosystem services. |
format | Online Article Text |
id | pubmed-10317053 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-103170532023-07-04 Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan Wassmer, Thomas Armstrong, Elise J Insect Sci Research Until now, little is known about the population structure and mobility of temperate dung beetles including the rainbow scarab, Phanaeus vindex (MacLeay 1819), although this knowledge is essential for their conservation as pastures become increasingly rare and the landscape fragmented by monocultures and urbanization. Here, we estimated population size, longevity, and dispersal within and between pastures. For 3 yr, we life-trapped beetles every week on 2 adjacent farms in SE Michigan, determined their sex, male morph, and size, and marked their elytra with individual tattoo patterns before releasing them. We marked a total of 470 rainbow scarabs of which 14 were recaptured once and 2 were recaptured twice. The sex ratio was not significantly sex-biased but fluctuated between months with no apparent uniformity between years. While the minor to major male ratios were unbiased in 2019 and 2020, they were marginally minor-biased in 2021. The gross population estimates for the 2 farms were 458–491 and 217 rainbow scarabs, respectively. Beetles traveled distances of up to 178 m within farms. No beetles dispersed between farms. One large female was recaptured after 338 days documenting the first cold hardiness and long lifespan of a cold-temperate dung beetle species in the wild. The low population estimates on both farms indicate 2 vulnerable populations with no or extremely limited connectivity. Supplementary funding for the land stewardship of small-scale cattle farmers could stabilize populations of native dung beetles and maintain their ecosystem services. Oxford University Press 2023-07-03 /pmc/articles/PMC10317053/ /pubmed/37399115 http://dx.doi.org/10.1093/jisesa/iead050 Text en © The Author(s) 2023. Published by Oxford University Press on behalf of Entomological Society of America. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Wassmer, Thomas Armstrong, Elise Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan |
title | Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan |
title_full | Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan |
title_fullStr | Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan |
title_full_unstemmed | Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan |
title_short | Population structure of Phanaeus vindex (Coleoptera: Scarabaeidae) in SE Michigan |
title_sort | population structure of phanaeus vindex (coleoptera: scarabaeidae) in se michigan |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10317053/ https://www.ncbi.nlm.nih.gov/pubmed/37399115 http://dx.doi.org/10.1093/jisesa/iead050 |
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