scholarly journals Sources of variation in small rodent trophic niche: new insights from DNA metabarcoding and stable isotope analysis

2014 ◽  
Vol 50 (3) ◽  
pp. 361-381 ◽  
Author(s):  
Eeva M. Soininen ◽  
Dorothée Ehrich ◽  
Nicolas Lecomte ◽  
Nigel G. Yoccoz ◽  
Arnaud Tarroux ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Trophic Niche ◽  
Small Rodent ◽  
Dna Metabarcoding ◽  
Sources Of Variation

Stable isotope analysis of trophic niche in two co-occurring native and invasive terrapins, Emys orbicularis and Trachemys scripta elegans

2016 ◽  
Vol 18 (12) ◽  
pp. 3611-3621 ◽  
Author(s):  
Paride Balzani ◽  
Salvatrice Vizzini ◽  
Giacomo Santini ◽  
Alberto Masoni ◽  
Claudio Ciofi ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Trophic Niche ◽  
Trachemys Scripta ◽  
Trachemys Scripta Elegans ◽  
Emys Orbicularis

scholarly journals Predation impacts of invasive raccoons on rare native species

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Sakura Oe ◽  
Mariko Sashika ◽  
Ayako Fujimoto ◽  
Michito Shimozuru ◽  
Toshio Tsubota
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Native Species ◽  
Isotope Analysis ◽  
Early Summer ◽  
Late Winter ◽  
Bayesian Mixing Model ◽  
Dna Metabarcoding ◽  
Gastric Contents ◽  
Predation Impact

AbstractIn Japan, there are concerns that invasive alien raccoons prey on rare native species during their spawning season from late winter to early summer. We investigated raccoon predation impact by examining the predation presence using DNA metabarcoding and extent of predation on rare native species using stable isotope analysis. We captured raccoons in Hokkaido, Japan from April to August in 2018 and 2019. We analysed raccoon faeces and gastric contents by DNA metabarcoding to detect the rare native Hokkaido salamander and Japanese crayfish. Hokkaido salamanders were detected from gastric contents, but Japanese crayfish were not detected in any samples. Stable isotope analysis of raccoon muscle samples and the Bayesian mixing model were used to estimate each food resource’s contribution to the raccoon diet. Animal food resources accounted for 70% of total consumed food. The foraging ratios of amphibians and crustaceans were about 9% and 5%, respectively. Raccoons have been found to use amphibians at a higher rate than previously reported, including a rare endangered species, the Hokkaido salamander. Hokkaido salamander and Japanese crayfish spawn in the spring, and increased predation pressure by raccoons may directly impact populations of these rare native species.

scholarly journals Network-Based Biomonitoring: Exploring Freshwater Food Webs With Stable Isotope Analysis and DNA Metabarcoding

2019 ◽  
Vol 7 ◽  
Author(s):  
Zacchaeus G. Compson ◽  
Wendy A. Monk ◽  
Brian Hayden ◽  
Alex Bush ◽  
Zoë O'Malley ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Dna Metabarcoding

scholarly journals Combining stable isotope analysis with DNA metabarcoding improves inferences of trophic ecology

PLoS ONE ◽  
2019 ◽  
Vol 14 (7) ◽  
pp. e0219070 ◽  
Author(s):  
Melissa R. L. Whitaker ◽  
Christopher C. M. Baker ◽  
Shayla M. Salzman ◽  
Dino J. Martins ◽  
Naomi E. Pierce
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Trophic Ecology ◽  
Isotope Analysis ◽  
Dna Metabarcoding

The Ontogenetically Variable Trophic Niche of a Praying Mantid Revealed by Stable Isotope Analysis

2015 ◽  
Vol 44 (2) ◽  
pp. 239-245 ◽  
Author(s):  
L. E. Hurd ◽  
P. A. P. Dehart ◽  
J. M. Taylor ◽  
M. C. Campbell ◽  
M. M. Shearer
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Trophic Niche ◽  
Praying Mantid

scholarly journals Feeding ecology of a mysid species, Neomysis awatschensis in the Lake Kasumigaura: combining approach with microscopy, stable isotope analysis and DNA metabarcoding

2020 ◽  
Vol 15 (1) ◽  
pp. 44-54 ◽  
Author(s):  
Yasuhide Nakamura ◽  
Akihiro Tuji ◽  
Wataru Makino ◽  
Shin-ichiro S. Matsuzaki ◽  
Nobuaki Nagata ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Feeding Ecology ◽  
Isotope Analysis ◽  
Lake Kasumigaura ◽  
Dna Metabarcoding

scholarly journals Trophic plasticity of the highly invasive topmouth gudgeon (Pseudorasbora parva) inferred from stable isotope analysis

2019 ◽  
Author(s):  
Matteo Rolla ◽  
Sofia Consuegra ◽  
Carlos Garcia de Leaniz
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Condition Factor ◽  
Trophic Position ◽  
Isotope Analysis ◽  
Trophic Niche ◽  
Pseudorasbora Parva ◽  
Trophic Plasticity ◽  
Topmouth Gudgeon ◽  
South Wales

AbstractA wide trophic niche and high trophic plasticity are often invoked to explain the successful establishment of many aquatic invaders, but there is little information regarding the diet of most invasive fish in European waters. We combined stomach content and stable isotope analysis (SIA) of13C and15N to examine the trophic niche of the highly invasive topmouth gudgeon (Pseudorasbora parva) in four contrasting ponds and reservoirs in South Wales. Marked differences in diet and trophic position were found among neighbouring systems only a few kilometres apart. The most diverse diet was found in ponds with the fewest number of inter-specific competitors, and resulted in topmouth gudgeon having the highest condition factor, the widest variation in δ13C and δ15N values, and the highest carbon content, typical of generalist feeders. In contrast, topmouth gudgeon that coexisted with other cyprinids, were much more likely to have empty stomachs and relied almost exclusively on plant seeds, resulting in fish having a poor condition factor and low trophic position. Comparisons with other trophic studies indicate that variation in isotope values among neighbouring sites can exceed variation across continents, making it difficult to predict the diet or trophic impacts of the invasive topmouth gudgeon. Given the importance of obtaining reliable data on trophic position for risk assessment, our study shows that the use of SIA could be used to prioritize control and eradication measures that take into account trophic plasticity.

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