Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents
Black rats ( Rattus rattus ) are one of the most widespread invasive animals and have been implicated in the decline of species representing several wildlife taxa, particularly on islands. However, their impact on more closely related species, i.e. rodents, via competition is less well-understood. U...
| Main Authors: | , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
Pensoft Publishers
2024
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| Subjects: | |
| Online Access: | https://doi.org/10.3897/neobiota.94.121287 |
| _version_ | 1821691579326267392 |
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| author | Taillie, Paul J. Boone IV, Wesley W. Wilson-Seelig, Alexandra L. McCleery, Robert |
| author_facet | Taillie, Paul J. Boone IV, Wesley W. Wilson-Seelig, Alexandra L. McCleery, Robert |
| author_sort | Taillie, Paul J. |
| collection | Zenodo |
| description | Black rats ( Rattus rattus ) are one of the most widespread invasive animals and have been implicated in the decline of species representing several wildlife taxa, particularly on islands. However, their impact on more closely related species, i.e. rodents, via competition is less well-understood. Using diet similarity as a metric of competition for food resources, we used stable isotopes to compare diets of two populations of black rats to diets of two endangered populations of rice rats ( Oryzomys palustris natator and Oryzomys palustris sanibeli ) in southern Florida, USA. Specifically, we analysed hair samples from 32 rice rats and 35 black rats for carbon (δ13C) and nitrogen (δ15N) isotopes. In addition, we analysed samples of 129 potential food items to characterise rodent diets using stable isotope mixing models. Despite considerable overlap in isotope-space, we observed differences between rice rats and black rats in the relative composition of plant and animal foods. Specifically, the diets of both populations of rice rats consisted of mostly animal foods, whereas the diets of black rats consisted mostly of plants. In combination with previous work revealing temporal niche partitioning, our results suggest competition between invasive black rats and endangered native rodents may be limited. As such, expensive and logistically complicated efforts to control black rats may have limited success for conserving endangered rodents. |
| format | Article in Journal/Newspaper |
| genre | Rattus rattus |
| genre_facet | Rattus rattus |
| id | ftzenodo:oai:zenodo.org:13140851 |
| institution | Open Polar |
| language | unknown |
| op_collection_id | ftzenodo |
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| op_rights | info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
| op_source | NeoBiota, 94, 145-158, (2024-07-29) |
| publishDate | 2024 |
| publisher | Pensoft Publishers |
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| spelling | ftzenodo:oai:zenodo.org:13140851 2025-01-17T00:26:35+00:00 Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents Taillie, Paul J. Boone IV, Wesley W. Wilson-Seelig, Alexandra L. McCleery, Robert 2024-07-29 https://doi.org/10.3897/neobiota.94.121287 unknown Pensoft Publishers https://doi.org/10.3897/neobiota.94.121287.suppl1 https://doi.org/10.1111/j.0021-8790.2004.00861.x https://doi.org/10.1007/s004420050236 https://doi.org/10.1016/j.ecochg.2022.100061 https://doi.org/10.1016/j.tree.2005.01.003 https://doi.org/10.1017/S1464793102006061 https://doi.org/10.1007/s10530-017-1534-x https://doi.org/10.1046/j.1442-9993.2000.01050.x https://doi.org/10.1111/j.1365-2907.2008.00120.x https://doi.org/10.1002/ece3.8225 https://doi.org/10.1073/pnas.1602480113 https://doi.org/10.1007/s10530-008-9392-1 https://doi.org/10.2307/1381882 https://doi.org/10.2307/4072271 https://doi.org/10.1016/j.gecco.2015.02.010 https://doi.org/10.1007/s10530-009-9560-y https://doi.org/10.1007/s10530-008-9393-0 https://doi.org/10.1890/06-1701.1 https://doi.org/10.1016/j.ecochg.2022.100051 https://doi.org/10.1371/journal.pone.0212128 https://doi.org/10.1017/S003060530999024X https://doi.org/10.1644/12-MAMM-A-124.1 https://doi.org/10.1111/j.1365-2656.2011.01806.x https://doi.org/10.1111/j.1523-1739.2007.00859.x https://doi.org/10.1073/pnas.1521179113 https://doi.org/10.1139/z99-165 https://doi.org/10.1086/282505 https://doi.org/10.1111/1365-2435.13266 https://doi.org/10.1111/1365-2656.13583 https://doi.org/10.1016/j.biocon.2004.12.010 https://doi.org/10.1007/s00442-014-3205-2 https://doi.org/10.5479/si.00775630.182.1 https://doi.org/10.1046/j.1365-2656.2003.00730.x https://doi.org/10.1139/cjz-2014-0127 https://doi.org/10.1371/journal.pone.0127901 https://doi.org/10.1111/ecog.01678 https://doi.org/10.1007/s10144-011-0265-6 https://doi.org/10.1016/j.biocon.2014.10.001 https://doi.org/10.1016/j.actao.2020.103701 https://doi.org/10.2307/1377578 https://doi.org/10.1007/s10530-012-0348-0 https://doi.org/10.1111/rec.12494 https://doi.org/10.1016/S0169-5347(01)02154-1 https://doi.org/10.1111/geb.12220 https://doi.org/10.1111/j.1461-0248.2007.01107.x https://doi.org/10.1126/sciadv.1603080 https://doi.org/10.1016/j.biocon.2010.10.006 https://doi.org/10.1007/s00442-002-1146-7 https://doi.org/10.1002/ecm.1525 https://doi.org/10.1111/acv.12637 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode NeoBiota, 94, 145-158, (2024-07-29) Biota Animalia Chordata Vertebrata Gnathostomata Osteichthyes Sarcopterygii Tetrapoda Amniota Mammalia Theria Eutheria Rodentia Myomorpha Muroidea Muridae Murinae Rattus Rattus rattus Florida island mangrove rodent stable Isotope Wetland info:eu-repo/semantics/article 2024 ftzenodo 2024-12-06T11:21:17Z Black rats ( Rattus rattus ) are one of the most widespread invasive animals and have been implicated in the decline of species representing several wildlife taxa, particularly on islands. However, their impact on more closely related species, i.e. rodents, via competition is less well-understood. Using diet similarity as a metric of competition for food resources, we used stable isotopes to compare diets of two populations of black rats to diets of two endangered populations of rice rats ( Oryzomys palustris natator and Oryzomys palustris sanibeli ) in southern Florida, USA. Specifically, we analysed hair samples from 32 rice rats and 35 black rats for carbon (δ13C) and nitrogen (δ15N) isotopes. In addition, we analysed samples of 129 potential food items to characterise rodent diets using stable isotope mixing models. Despite considerable overlap in isotope-space, we observed differences between rice rats and black rats in the relative composition of plant and animal foods. Specifically, the diets of both populations of rice rats consisted of mostly animal foods, whereas the diets of black rats consisted mostly of plants. In combination with previous work revealing temporal niche partitioning, our results suggest competition between invasive black rats and endangered native rodents may be limited. As such, expensive and logistically complicated efforts to control black rats may have limited success for conserving endangered rodents. Article in Journal/Newspaper Rattus rattus Zenodo |
| spellingShingle | Biota Animalia Chordata Vertebrata Gnathostomata Osteichthyes Sarcopterygii Tetrapoda Amniota Mammalia Theria Eutheria Rodentia Myomorpha Muroidea Muridae Murinae Rattus Rattus rattus Florida island mangrove rodent stable Isotope Wetland Taillie, Paul J. Boone IV, Wesley W. Wilson-Seelig, Alexandra L. McCleery, Robert Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents |
| title | Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents |
| title_full | Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents |
| title_fullStr | Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents |
| title_full_unstemmed | Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents |
| title_short | Diet comparison suggests limited competition between invasive black rats (Rattus rattus) and sympatric endangered rodents |
| title_sort | diet comparison suggests limited competition between invasive black rats (rattus rattus) and sympatric endangered rodents |
| topic | Biota Animalia Chordata Vertebrata Gnathostomata Osteichthyes Sarcopterygii Tetrapoda Amniota Mammalia Theria Eutheria Rodentia Myomorpha Muroidea Muridae Murinae Rattus Rattus rattus Florida island mangrove rodent stable Isotope Wetland |
| topic_facet | Biota Animalia Chordata Vertebrata Gnathostomata Osteichthyes Sarcopterygii Tetrapoda Amniota Mammalia Theria Eutheria Rodentia Myomorpha Muroidea Muridae Murinae Rattus Rattus rattus Florida island mangrove rodent stable Isotope Wetland |
| url | https://doi.org/10.3897/neobiota.94.121287 |