0000000000975212
AUTHOR
Katariina Tiainen
Artificial selection for predatory behavior results in dietary niche differentiation in an omnivorous mammal
AbstractThe diet of an individual is a result of the availability of dietary items and the individual’s foraging skills and preferences. Behavioral differences may thus influence diet variation, but the evolvability of diet choice through behavioral evolution has not been studied. We used experimental evolution combined with a field enclosure experiment to test whether behavioral selection leads to dietary divergence. We analysed the individual dietary niche via stable isotope ratios of nitrogen (δ15N) and carbon (δ13C) in the hair of an omnivorous mammal, bank vole, from 4 lines selected for predatory behavior and 4 unselected control lines. Predatory voles had higher hair δ15N values than…
Demokraattisen kansalaisen hyveet Carlos Alberto Torresin kansalaisuuskäsityksessä
Muuttuvassa maailmassa tulisi pohtia, millaisia kansalaisia haluamme kasvattaa. Erityisen tärkeää on pysähtyä tarkastelemaan koulutuksen roolia demokraattisten kansalaisten kasvattajana. Yhdysvaltalaisen kriittisen kasvatuksen teoreetikon Carlos Alberto Torresin 111 teoreettinen lähestymistapa yhdistää kansalaisuuteen kytkeytyviä teoreettisia ja toimintapoliittisia haasteita sekä normatiivisia näkemyksiä. Torresin monipuolinen esitys kansalaisuuteen kohdistuvista dilemmoista sekä konstruktio demokraattis-monikulttuurisesta kansalaisuudesta rinnastaa teoreettista ja poliittista, ja samalla pyrkii vastaamaan kysymykseen ”miten tulisi olla”. Yksi Torresin demokraattis-monikulttuurisen kansalai…
Artificial selection for predatory behaviour results in dietary niche differentiation in an omnivorous mammal
The diet of an individual is a result of the availability of dietary items and the individual's foraging skills and preferences. Behavioural differences may thus influence diet variation, but the evolvability of diet choice through behavioural evolution has not been studied. We used experimental evolution combined with a field enclosure experiment to test whether behavioural selection leads to dietary divergence. We analysed the individual dietary niche via stable isotope ratios of nitrogen ( δ 15 N) and carbon ( δ 13 C) in the hair of an omnivorous mammal, the bank vole, from four lines selected for predatory behaviour and four unselected control lines. Predatory voles had higher hair δ 1…
Supplementary methods and results from Artificial selection for predatory behaviour results in dietary niche differentiation in an omnivorous mammal
The diet of an individual is a result of the availability of dietary items and the individual's foraging skills and preferences. Behavioural differences may thus influence diet variation, but the evolvability of diet choice through behavioural evolution has not been studied. We used experimental evolution combined with a field enclosure experiment to test whether behavioural selection leads to dietary divergence. We analysed the individual dietary niche via stable isotope ratios of nitrogen (��15N) and carbon (��13C) in the hair of an omnivorous mammal, bank vole, from four lines selected for predatory behaviour and four unselected control lines. Predatory voles had higher hair ��15N values…