About: Composition and Scaling of Male and Female Alpine Newt (Mesotriton Alpestris) Prey, with Related Site and Seasonal Effects

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About: Composition and Scaling of Male and Female Alpine Newt (Mesotriton Alpestris) Prey, with Related Site and Seasonal Effects Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In amphibians, most species are female-biased sexually dimorphic and such dimorphism is often accompanied by intersexual differences in prey composition. While many aspects of foraging ecology have been studied in this group, intersexual differences have rarely been described. We examined dietary composition of male and female Alpine Newts (Mesotriton alpestris) at two localities in the Czech Republic during the entire breeding period by stomach flushing. Isopoda, Cladocera, Rana eggs were the most important prey. About 16% of newts did not contain prey items. Females were at studied localities about 15% larger than males. Snout-vent length (SVL) of newts was related to the mass of consumed prey, but not its number and diversity. Analyzing the residuals from the relationships between SVL and prey characteristics, we found effect of sex on all observed prey variables – females consumed more prey items, more diverse prey and also prey in greater mass than did males. In amphibians, most species are female-biased sexually dimorphic and such dimorphism is often accompanied by intersexual differences in prey composition. While many aspects of foraging ecology have been studied in this group, intersexual differences have rarely been described. We examined dietary composition of male and female Alpine Newts (Mesotriton alpestris) at two localities in the Czech Republic during the entire breeding period by stomach flushing. Isopoda, Cladocera, Rana eggs were the most important prey. About 16% of newts did not contain prey items. Females were at studied localities about 15% larger than males. Snout-vent length (SVL) of newts was related to the mass of consumed prey, but not its number and diversity. Analyzing the residuals from the relationships between SVL and prey characteristics, we found effect of sex on all observed prey variables – females consumed more prey items, more diverse prey and also prey in greater mass than did males. (en)
Title	Composition and Scaling of Male and Female Alpine Newt (Mesotriton Alpestris) Prey, with Related Site and Seasonal Effects Composition and Scaling of Male and Female Alpine Newt (Mesotriton Alpestris) Prey, with Related Site and Seasonal Effects (en)
skos:prefLabel	Composition and Scaling of Male and Female Alpine Newt (Mesotriton Alpestris) Prey, with Related Site and Seasonal Effects Composition and Scaling of Male and Female Alpine Newt (Mesotriton Alpestris) Prey, with Related Site and Seasonal Effects (en)
skos:notation	RIV/60460709:41210/12:55393!RIV13-MSM-41210___
http://linked.open...avai/riv/aktivita	S
http://linked.open...avai/riv/aktivity	S
http://linked.open...iv/cisloPeriodika	49
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Kopecký, Oldřich
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká zemědělská univerzita v Praze / Fakulta agrobiologie, potravinových a přírodních zdrojů
http://linked.open...dnocenehoVysledku	128228
http://linked.open...ai/riv/idVysledku	RIV/60460709:41210/12:55393
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Sexual dimorphism, Prey selection, Feeding, Predation, Caudata (en)
http://linked.open.../riv/klicoveSlovo	Feeding Caudata Predation Prey selection Sexual dimorphism
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[842887A9FFC2]
http://linked.open...i/riv/nazevZdroje	ANNALES ZOOLOGICI FENNICI
http://linked.open...in/vavai/riv/obor	EG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	2012
http://linked.open...iv/tvurceVysledku	Rehák, Ivan Kopecký, Oldřich Vojar, Jiří Šusta, František
http://linked.open...ain/vavai/riv/wos	000307916700003
issn	0003-455X
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	41210

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