Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri)
Stable isotope analyses (SIAs) have been widely used in recent years to infer the diet of many species. This isotopic approach requires using diet to tissue discrimination factors (DTDFs) for each prey type and predator tissue, i.e., to determine the difference between the isotopic composition of th...
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Museu de Ciències Naturals de Barcelona
2019-11-01
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doaj-257dc8d704eb44e586ba49d0710480792020-11-25T01:30:02ZengMuseu de Ciències Naturals de BarcelonaAnimal Biodiversity and Conservation1578-665X2019-11-0142238939510.32800/abc.2019.42.0389Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri)Mazzoni, D. Borray-Escalante, N. A.Ortega–Segalerva, A.Arroyo, L. González–Solís, J. Senar, J. C. Stable isotope analyses (SIAs) have been widely used in recent years to infer the diet of many species. This isotopic approach requires using diet to tissue discrimination factors (DTDFs) for each prey type and predator tissue, i.e., to determine the difference between the isotopic composition of the predator tissues and the different prey that conform its diet. Information on DTDF values in Psittaciformes is scarce. The aim of this study was to assess DTDF values for the carbon and nitrogen isotopes of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri), two invasive alien species of concern. We fed captive birds of the two parakeet species on a single–species diet based on sunflower seeds to establish the DTDFs for the blood and feathers. In the monk parakeet (N = 9) DTDFs were Δδ13C 2.14 ‰ ± 0.90 and Δδ15N 3.21 ‰ ± 0.75 for the blood, and Δδ13C 3.97 ‰ ± 0.90 and Δδ15N 3.67 ‰ ± 0.74 for the feathers. In the ring–necked parakeet (N = 9), the DTDFs were Δδ13C (‰) 2.58 ± 0.90 and Δδ15N (‰) 2.35 ± 0.78 for the blood, and Δδ13C 3.64 ‰ ± 0.98 and Δδ15N 4.10 ‰ ± 1.84 for the feathers. DTDF values for the ring–necked parakeet blood were significantly higher than those for the monk parakeet blood. No difference was found between the two species in the DTDF for feathers. Our findings provide the first values of DTDFs for blood and feathers in these parakeets, factors that are key to infer the diet of these species based on SIA.http://abc.museucienciesjournals.cat/volume-42-2-2019-en/diet-to-tissue-discrimination-factors-for-the-blood-and-feathers-of-the-monk-parakeet-myiopsitta-monachus-and-the-ring-necked-parakeet-psittacula-krameri/?lang=enstable isotopesparrotscaptive birdscontrol dietinvasive species |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mazzoni, D. Borray-Escalante, N. A. Ortega–Segalerva, A. Arroyo, L. González–Solís, J. Senar, J. C. |
spellingShingle |
Mazzoni, D. Borray-Escalante, N. A. Ortega–Segalerva, A. Arroyo, L. González–Solís, J. Senar, J. C. Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri) Animal Biodiversity and Conservation stable isotopes parrots captive birds control diet invasive species |
author_facet |
Mazzoni, D. Borray-Escalante, N. A. Ortega–Segalerva, A. Arroyo, L. González–Solís, J. Senar, J. C. |
author_sort |
Mazzoni, D. |
title |
Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri) |
title_short |
Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri) |
title_full |
Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri) |
title_fullStr |
Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri) |
title_full_unstemmed |
Diet to tissue discrimination factors for the blood and feathers of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri) |
title_sort |
diet to tissue discrimination factors for the blood and feathers of the monk parakeet (myiopsitta monachus) and the ring–necked parakeet (psittacula krameri) |
publisher |
Museu de Ciències Naturals de Barcelona |
series |
Animal Biodiversity and Conservation |
issn |
1578-665X |
publishDate |
2019-11-01 |
description |
Stable isotope analyses (SIAs) have been widely used in recent years to infer the diet of many species. This isotopic approach requires using diet to tissue discrimination factors (DTDFs) for each prey type and predator tissue, i.e., to determine the difference between the isotopic composition of the predator tissues and the different prey that conform its diet. Information on DTDF values in Psittaciformes is scarce. The aim of this study was to assess DTDF values for the carbon and nitrogen isotopes of the monk parakeet (Myiopsitta monachus) and the ring–necked parakeet (Psittacula krameri), two invasive alien species of concern. We fed captive birds of the two parakeet species on a single–species diet based on sunflower seeds to establish the DTDFs for the blood and feathers. In the monk parakeet (N = 9) DTDFs were Δδ13C 2.14 ‰ ± 0.90 and Δδ15N 3.21 ‰ ± 0.75 for the blood, and Δδ13C 3.97 ‰ ± 0.90 and Δδ15N 3.67 ‰ ± 0.74 for the feathers. In the ring–necked parakeet (N = 9), the DTDFs were Δδ13C (‰) 2.58 ± 0.90 and Δδ15N (‰) 2.35 ± 0.78 for the blood, and Δδ13C 3.64 ‰ ± 0.98 and Δδ15N 4.10 ‰ ± 1.84 for the feathers. DTDF values for the ring–necked parakeet blood were significantly higher than those for the monk parakeet blood. No difference was found between the two species in the DTDF for feathers. Our findings provide the first values of DTDFs for blood and feathers in these parakeets, factors that are key to infer the diet of these species based on SIA. |
topic |
stable isotopes parrots captive birds control diet invasive species |
url |
http://abc.museucienciesjournals.cat/volume-42-2-2019-en/diet-to-tissue-discrimination-factors-for-the-blood-and-feathers-of-the-monk-parakeet-myiopsitta-monachus-and-the-ring-necked-parakeet-psittacula-krameri/?lang=en |
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