Number of the records: 1

Costly neighbours: Heterospecific competitive interactions increase metabolic rates in dominant species

SYSNO ASEP	0476142
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Costly neighbours: Heterospecific competitive interactions increase metabolic rates in dominant species
Author(s)	Janča, M. (CZ) Gvoždík, Lumír (UBO-W)_{RID, ORCID, SAI}
Number of authors	2
Article number	5177
Source Title	Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322 Roč. 7, č. 5177 (2017)
Number of pages	6 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	interference competition ; intraspecific variation ; terrestrial salamander ; energy metabolism ; natural selection ; newts
Subject RIV	EG - Zoology
OECD category	Zoology
R&D Projects	GA15-07140S GA ČR - Czech Science Foundation (CSF)
Institutional support	UBO-W - RVO:68081766
UT WOS	000405421400017
EID SCOPUS	85023779287
DOI	10.1038/s41598-017-05485-9
Annotation	The energy costs of self-maintenance (standard metabolic rate, SMR) vary substantially among individuals within a population. Despite the importance of SMR for understanding life history strategies, ecological sources of SMR variation remain only partially understood. Stress-mediated increases in SMR are common in subordinate individuals within a population, while the direction and magnitude of the SMR shift induced by interspecific competitive interactions is largely unknown. Using laboratory experiments, we examined the influence of con- and heterospecific pairing on SMR, spontaneous activity, and somatic growth rates in the sympatrically living juvenile newts Ichthyosaura alpestris and Lissotriton vulgaris. The experimental pairing had little influence on SMR and growth rates in the smaller species, L. vulgaris. Individuals exposed to con- and heterospecific interactions were more active than individually reared newts. In the larger species, I. alpestris, heterospecific interactions induced SMR to increase beyond values of individually reared counterparts. Individuals from heterospecific pairs and larger conspecifics grew faster than did newts in other groups. The plastic shift in SMR was independent of the variation in growth rate and activity level. These results reveal a new source of individual SMR variation and potential costs of co-occurrence in ecologically similar taxa.
Workplace	Institute of Vertebrate Biology
Contact	Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524
Year of Publishing	2018

Number of the records: 1