The island syndrome and population dynamics of introduced rats
PMID: 21643994 The island syndrome predicts directional changes in the morphology and demography of insular vertebrates, due to changes in trophic complexity and migration rates caused by island size and isolation. However, the high rate of human-mediated species introductions to some islands also i...
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ftunivnantes:oai:HAL:hal-00852827v1 2023-05-15T18:05:33+02:00 The island syndrome and population dynamics of introduced rats Russell, James C. Ringler, David Trombini, Aurélien Le Corre, Matthieu Laboratoire d'Ecologie Marine (ECOMAR) Université de La Réunion (UR) 2011 https://hal.archives-ouvertes.fr/hal-00852827 https://doi.org/10.1007/s00442-011-2031-z en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00442-011-2031-z hal-00852827 https://hal.archives-ouvertes.fr/hal-00852827 doi:10.1007/s00442-011-2031-z ISSN: 0029-8549 EISSN: 1432-1939 Oecologia https://hal.archives-ouvertes.fr/hal-00852827 Oecologia, Springer Verlag, 2011, 167 (3), pp.667--676. ⟨10.1007/s00442-011-2031-z⟩ Animals Behavior Animal Biological Evolution Body Size Discriminant Analysis Ecosystem Geography Linear Models Mozambique Population Dynamics Rats reproduction Rodentia [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2011 ftunivnantes https://doi.org/10.1007/s00442-011-2031-z 2022-06-28T22:57:03Z PMID: 21643994 The island syndrome predicts directional changes in the morphology and demography of insular vertebrates, due to changes in trophic complexity and migration rates caused by island size and isolation. However, the high rate of human-mediated species introductions to some islands also increases trophic complexity, and this will reduce the perceived insularity on any such island. We test four hypotheses on the role of increased trophic complexity on the island syndrome, using introduced black rats (Rattus rattus) on two isolated coral atolls in the Mozambique Channel. Europa Island has remained relatively pristine and insular, with few species introductions, whereas Juan de Nova Island has had many species introductions, including predators and competitors of rats, anthropogenically increasing its trophic complexity. In the most insular environments, the island syndrome is expected to generate increases in body size and densities of rodents but decreases in the rates of reproduction and population cycling. Morphology and reproduction were compared using linear regression and canonical discriminant analysis, while density and population cycling were compared using spatially explicit capture-recapture analysis. Results were compared to other insular black rat populations in the Mozambique Channel and were consistent with predictions from the island syndrome. The manifestation of an island syndrome in rodents depends upon the trophic composition of a community, and may not relate to island size alone when many species additions, such as invasions, have occurred. The differing patterns of rodent population dynamics on each island provide information for future rodent eradication operations. Article in Journal/Newspaper Rattus rattus Université de Nantes: HAL-UNIV-NANTES Oecologia 167 3 667 676 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Animals Behavior Animal Biological Evolution Body Size Discriminant Analysis Ecosystem Geography Linear Models Mozambique Population Dynamics Rats reproduction Rodentia [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Animals Behavior Animal Biological Evolution Body Size Discriminant Analysis Ecosystem Geography Linear Models Mozambique Population Dynamics Rats reproduction Rodentia [SDE.BE]Environmental Sciences/Biodiversity and Ecology Russell, James C. Ringler, David Trombini, Aurélien Le Corre, Matthieu The island syndrome and population dynamics of introduced rats |
topic_facet |
Animals Behavior Animal Biological Evolution Body Size Discriminant Analysis Ecosystem Geography Linear Models Mozambique Population Dynamics Rats reproduction Rodentia [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
PMID: 21643994 The island syndrome predicts directional changes in the morphology and demography of insular vertebrates, due to changes in trophic complexity and migration rates caused by island size and isolation. However, the high rate of human-mediated species introductions to some islands also increases trophic complexity, and this will reduce the perceived insularity on any such island. We test four hypotheses on the role of increased trophic complexity on the island syndrome, using introduced black rats (Rattus rattus) on two isolated coral atolls in the Mozambique Channel. Europa Island has remained relatively pristine and insular, with few species introductions, whereas Juan de Nova Island has had many species introductions, including predators and competitors of rats, anthropogenically increasing its trophic complexity. In the most insular environments, the island syndrome is expected to generate increases in body size and densities of rodents but decreases in the rates of reproduction and population cycling. Morphology and reproduction were compared using linear regression and canonical discriminant analysis, while density and population cycling were compared using spatially explicit capture-recapture analysis. Results were compared to other insular black rat populations in the Mozambique Channel and were consistent with predictions from the island syndrome. The manifestation of an island syndrome in rodents depends upon the trophic composition of a community, and may not relate to island size alone when many species additions, such as invasions, have occurred. The differing patterns of rodent population dynamics on each island provide information for future rodent eradication operations. |
author2 |
Laboratoire d'Ecologie Marine (ECOMAR) Université de La Réunion (UR) |
format |
Article in Journal/Newspaper |
author |
Russell, James C. Ringler, David Trombini, Aurélien Le Corre, Matthieu |
author_facet |
Russell, James C. Ringler, David Trombini, Aurélien Le Corre, Matthieu |
author_sort |
Russell, James C. |
title |
The island syndrome and population dynamics of introduced rats |
title_short |
The island syndrome and population dynamics of introduced rats |
title_full |
The island syndrome and population dynamics of introduced rats |
title_fullStr |
The island syndrome and population dynamics of introduced rats |
title_full_unstemmed |
The island syndrome and population dynamics of introduced rats |
title_sort |
island syndrome and population dynamics of introduced rats |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.archives-ouvertes.fr/hal-00852827 https://doi.org/10.1007/s00442-011-2031-z |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
ISSN: 0029-8549 EISSN: 1432-1939 Oecologia https://hal.archives-ouvertes.fr/hal-00852827 Oecologia, Springer Verlag, 2011, 167 (3), pp.667--676. ⟨10.1007/s00442-011-2031-z⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00442-011-2031-z hal-00852827 https://hal.archives-ouvertes.fr/hal-00852827 doi:10.1007/s00442-011-2031-z |
op_doi |
https://doi.org/10.1007/s00442-011-2031-z |
container_title |
Oecologia |
container_volume |
167 |
container_issue |
3 |
container_start_page |
667 |
op_container_end_page |
676 |
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1766177030845497344 |