Possible implications of stable isotope analysis in wild boar management: stable carbon and nitrogen isotope discrimination factors from diet to hair

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F14%3AN0000008" target="_blank" >RIV/60460709:41320/14:N0000008 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Possible implications of stable isotope analysis in wild boar management: stable carbon and nitrogen isotope discrimination factors from diet to hair

Original language description

Stable isotope analyses have become a widespread tool for studying the nutritional ecology of wildlife. Stable carbon (13C/12C) and nitrogen (15N/14N) isotope ratios can be used to gain important insights into the trophic relationships between organisms as well as habitat use and origin of diet for many wildlife species. Stable isotope ratios in animal tissues reflect those of their diet. However, isotope values of animal tissues and their diets differ due to a phenomenon known as a trophic discrimination factor, which needs to be taken into account while reconstructing diet of animals by stable isotope analysis. This trophic discrimination is the result of many processes and varies with respect to many factors, including the studied species, differential digestibility, type of tissue analysed, growth rate and tissue turnover rate. Dietary inferences based on stable isotope analysis of tissues of wild animals are often hampered because values for discrimination factors are only assumed and not experimentally derived resulting in inaccurate estimates of animal diets. It is thus important to experimentally determine discrimination factors under controlled conditions in order to get accurate and reliable information on diets of wild animals. Here we determined stable carbon and nitrogen isotope discrimination factors in hair of four 3-year old captive wild boar (Sus scrofa) fed with a constant diet (corn, Zea mays) over a 4-month period. Also, the growth rate (mm/day) of wild boar hair was calculated. These results allow more accurate interpretation of field data and can be used for dietary reconstructions of free-ranging wild boar. Possible implications of stable carbon and nitrogen isotope analyses in wild boar management and feeding ecology will be discussed.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

40102 - Forestry

Project

<a href="/en/project/QJ1220314" target="_blank" >QJ1220314: Management harmonization of wildlife populations and forest ecosystems in the context of expected climatic changes and damage minimization over forest stands</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů