Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs
The decline of amphibians has been of international concern for more than two decades, and the global spread of introduced fauna is a major factor in this decline. Conservation management decisions to implement control of introduced fauna are often based on diet studies. One of the most common metri...
Published in: | Ecology and Evolution |
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Online Access: | https://scholia.toolforge.org/work/Q64117216 http://www.wikidata.org/entity/Q64117216 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509367 https://doi.org/10.1002/ECE3.4903 |
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ftenkore:wikidata-Q64117216 2023-10-09T21:55:34+02:00 Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs Egeter, Bastian Roe, Cailín Peixoto, Sara Puppo, Pamela Easton, Luke J Pinto, Joana Bishop, Phillip J. Robertson, Bruce C. 2019-04-13 https://scholia.toolforge.org/work/Q64117216 http://www.wikidata.org/entity/Q64117216 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509367 https://doi.org/10.1002/ECE3.4903 en eng Wiley https://scholia.toolforge.org/work/Q64117216 http://www.wikidata.org/entity/Q64117216 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509367 doi:10.1002/ECE3.4903 http://creativecommons.org/licenses/by/4.0/ theme:invasion management theme:wikidata.org/entity/Q113019190 Leiopelma predation invasive species New Zealand invasive species management invasion management journal article 2019 ftenkore https://doi.org/10.1002/ECE3.4903 2023-09-22T09:37:05Z The decline of amphibians has been of international concern for more than two decades, and the global spread of introduced fauna is a major factor in this decline. Conservation management decisions to implement control of introduced fauna are often based on diet studies. One of the most common metrics to report in diet studies is Frequency of Occurrence (FO), but this can be difficult to interpret, as it does not include a temporal perspective. Here, we examine the potential for FO data derived from molecular diet analysis to inform invasive species management, using invasive ship rats (Rattus rattus) and endemic frogs (Leiopelma spp.) in New Zealand as a case study. Only two endemic frog species persist on the mainland. One of these, Leiopelma archeyi, is Critically Endangered (IUCN 2017) and ranked as the world's most evolutionarily distinct and globally endangered amphibian (EDGE, 2018). Ship rat stomach contents were collected by kill-trapping and subjected to three methods of diet analysis (one morphological and two DNA-based). A new primer pair was developed targeting all anuran species that exhibits good coverage, high taxonomic resolution, and reasonable specificity. Incorporating a temporal parameter allowed us to calculate the minimum number of ingestion events per rat per night, providing a more intuitive metric than the more commonly reported FO. We are not aware of other DNA-based diet studies that have incorporated a temporal parameter into FO data. The usefulness of such a metric will depend on the study system, in particular the feeding ecology of the predator. Ship rats are consuming both species of native frogs present on mainland New Zealand, and this study provides the first detections of remains of these species in mammalian stomach contents. Article in Journal/Newspaper Rattus rattus enKORE project New Zealand Ecology and Evolution 9 9 5032 5048 |
institution |
Open Polar |
collection |
enKORE project |
op_collection_id |
ftenkore |
language |
English |
topic |
theme:invasion management theme:wikidata.org/entity/Q113019190 Leiopelma predation invasive species New Zealand invasive species management invasion management |
spellingShingle |
theme:invasion management theme:wikidata.org/entity/Q113019190 Leiopelma predation invasive species New Zealand invasive species management invasion management Egeter, Bastian Roe, Cailín Peixoto, Sara Puppo, Pamela Easton, Luke J Pinto, Joana Bishop, Phillip J. Robertson, Bruce C. Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs |
topic_facet |
theme:invasion management theme:wikidata.org/entity/Q113019190 Leiopelma predation invasive species New Zealand invasive species management invasion management |
description |
The decline of amphibians has been of international concern for more than two decades, and the global spread of introduced fauna is a major factor in this decline. Conservation management decisions to implement control of introduced fauna are often based on diet studies. One of the most common metrics to report in diet studies is Frequency of Occurrence (FO), but this can be difficult to interpret, as it does not include a temporal perspective. Here, we examine the potential for FO data derived from molecular diet analysis to inform invasive species management, using invasive ship rats (Rattus rattus) and endemic frogs (Leiopelma spp.) in New Zealand as a case study. Only two endemic frog species persist on the mainland. One of these, Leiopelma archeyi, is Critically Endangered (IUCN 2017) and ranked as the world's most evolutionarily distinct and globally endangered amphibian (EDGE, 2018). Ship rat stomach contents were collected by kill-trapping and subjected to three methods of diet analysis (one morphological and two DNA-based). A new primer pair was developed targeting all anuran species that exhibits good coverage, high taxonomic resolution, and reasonable specificity. Incorporating a temporal parameter allowed us to calculate the minimum number of ingestion events per rat per night, providing a more intuitive metric than the more commonly reported FO. We are not aware of other DNA-based diet studies that have incorporated a temporal parameter into FO data. The usefulness of such a metric will depend on the study system, in particular the feeding ecology of the predator. Ship rats are consuming both species of native frogs present on mainland New Zealand, and this study provides the first detections of remains of these species in mammalian stomach contents. |
format |
Article in Journal/Newspaper |
author |
Egeter, Bastian Roe, Cailín Peixoto, Sara Puppo, Pamela Easton, Luke J Pinto, Joana Bishop, Phillip J. Robertson, Bruce C. |
author_facet |
Egeter, Bastian Roe, Cailín Peixoto, Sara Puppo, Pamela Easton, Luke J Pinto, Joana Bishop, Phillip J. Robertson, Bruce C. |
author_sort |
Egeter, Bastian |
title |
Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs |
title_short |
Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs |
title_full |
Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs |
title_fullStr |
Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs |
title_full_unstemmed |
Using molecular diet analysis to inform invasive species management: A case study of introduced rats consuming endemic New Zealand frogs |
title_sort |
using molecular diet analysis to inform invasive species management: a case study of introduced rats consuming endemic new zealand frogs |
publisher |
Wiley |
publishDate |
2019 |
url |
https://scholia.toolforge.org/work/Q64117216 http://www.wikidata.org/entity/Q64117216 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509367 https://doi.org/10.1002/ECE3.4903 |
geographic |
New Zealand |
geographic_facet |
New Zealand |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_relation |
https://scholia.toolforge.org/work/Q64117216 http://www.wikidata.org/entity/Q64117216 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509367 doi:10.1002/ECE3.4903 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ECE3.4903 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
9 |
container_start_page |
5032 |
op_container_end_page |
5048 |
_version_ |
1779319525244665856 |