Asymetrická kompetice: prostorové rozložení dvou kompetujících si druhů ryb

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F06%3A00039263" target="_blank" >RIV/60077344:_____/06:00039263 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/06:00006875

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Asymmetric competition, body size, and foraging tactics: testing the ideal free distribution in two competing fish species

Popis výsledku v původním jazyce

In this article a distribution of two fish species (danio and minnow) is studied. In the presence of conspecifics alone, individuals of each species conform to Parker?s matching rule, distributing themselves according to the ratio of the food supply rates. When both species are present, the minnow distribut. still follows the matching rule but the danio selects the feeding site with the lower food supply rate disproportionately more often than when it is alone. Hence, while intraspecific competition does not affect feeding site preferences in either of the species, interspecific competition between minnows and danios is asymmetric; the minnow is the dominant competitor. We trace the asymmetry to species-specific foraging tactics. Minnows stay much closer to a feeding site and reach food items twice as quickly as danios. Thus, interference between species appears to drive the asymmetric competition which makes Parker?s matching rule generalized to a two-species environment inadequate.

Název v anglickém jazyce

Asymmetric competition, body size, and foraging tactics: testing the ideal free distribution in two competing fish species

Popis výsledku anglicky

In this article a distribution of two fish species (danio and minnow) is studied. In the presence of conspecifics alone, individuals of each species conform to Parker?s matching rule, distributing themselves according to the ratio of the food supply rates. When both species are present, the minnow distribut. still follows the matching rule but the danio selects the feeding site with the lower food supply rate disproportionately more often than when it is alone. Hence, while intraspecific competition does not affect feeding site preferences in either of the species, interspecific competition between minnows and danios is asymmetric; the minnow is the dominant competitor. We trace the asymmetry to species-specific foraging tactics. Minnows stay much closer to a feeding site and reach food items twice as quickly as danios. Thus, interference between species appears to drive the asymmetric competition which makes Parker?s matching rule generalized to a two-species environment inadequate.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Evolutionary Ecology Research

ISSN

1522-0613

e-ISSN

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Svazek periodika

8

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

929-942

Kód UT WoS článku

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EID výsledku v databázi Scopus

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