The rainbow trout is affecting the occupancy of native amphibians in Patagonia

In this work, we assessed the occupancy of two native amphibian species of the Valcheta stream in the Somuncura Plateau, northern Patagonia: the Valcheta frog, Pleurodema somuncurense and the Argentine common toad, Rhinella arenarum. We hypothesized that the occupancy of both amphibian species will...

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Autores principales: Velasco, Melina Alicia, Berkunsky, Igor, Simoy, María Verónica, Quiroga, Sofía, Bucciarelli, Gary M., Kats, Lee B., Kacoliris, Federico Pablo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Zoología
Exotic invasive species
Occupancy model
Oncorhynchus mykiss
Pleurodema somuncurense
Rhinella arenarum
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/137552
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-137552
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
Exotic invasive species
Occupancy model
Oncorhynchus mykiss
Pleurodema somuncurense
Rhinella arenarum
spellingShingle Zoología
Exotic invasive species
Occupancy model
Oncorhynchus mykiss
Pleurodema somuncurense
Rhinella arenarum
Velasco, Melina Alicia
Berkunsky, Igor
Simoy, María Verónica
Quiroga, Sofía
Bucciarelli, Gary M.
Kats, Lee B.
Kacoliris, Federico Pablo
The rainbow trout is affecting the occupancy of native amphibians in Patagonia
topic_facet Zoología
Exotic invasive species
Occupancy model
Oncorhynchus mykiss
Pleurodema somuncurense
Rhinella arenarum
description In this work, we assessed the occupancy of two native amphibian species of the Valcheta stream in the Somuncura Plateau, northern Patagonia: the Valcheta frog, Pleurodema somuncurense and the Argentine common toad, Rhinella arenarum. We hypothesized that the occupancy of both amphibian species will be shaped by the presence of trout; we also expected a decline in occupancy assuming that the new predator in the system will affect native amphibian populations. Between December 2014 and March 2015, we conducted surveys in 148 sites along the headwaters of Valcheta stream. We modelled the occupancy by including the presence of trout, the temperature of water and the coverage of rocks and vegetation as site-habitat covariates. Models including trout were among the best ranked for both amphibian species. The presence of trout reduced the occupancy of both species and the magnitude of this reduction was much higher in the Valcheta frog than in the Argentine common toad. Overall, our results are of great relevance for land managers considering that the Valcheta frog is among the only three IUCN Critically Endangered amphibians in Argentina.
format Articulo
Articulo
author Velasco, Melina Alicia
Berkunsky, Igor
Simoy, María Verónica
Quiroga, Sofía
Bucciarelli, Gary M.
Kats, Lee B.
Kacoliris, Federico Pablo
author_facet Velasco, Melina Alicia
Berkunsky, Igor
Simoy, María Verónica
Quiroga, Sofía
Bucciarelli, Gary M.
Kats, Lee B.
Kacoliris, Federico Pablo
author_sort Velasco, Melina Alicia
title The rainbow trout is affecting the occupancy of native amphibians in Patagonia
title_short The rainbow trout is affecting the occupancy of native amphibians in Patagonia
title_full The rainbow trout is affecting the occupancy of native amphibians in Patagonia
title_fullStr The rainbow trout is affecting the occupancy of native amphibians in Patagonia
title_full_unstemmed The rainbow trout is affecting the occupancy of native amphibians in Patagonia
title_sort rainbow trout is affecting the occupancy of native amphibians in patagonia
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/137552
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