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@article{1387277,
author = {Janča, Matouš and Gvoždík, Lumír},
article_location = {LONDON},
article_number = {July},
doi = {http://dx.doi.org/10.1038/s41598-017-05485-9},
keywords = {INTERFERENCE COMPETITION; INTRASPECIFIC VARIATION; TERRESTRIAL SALAMANDER; ENERGY-METABOLISM; NATURAL-SELECTION; NEWTS; SIZE; CONSEQUENCES; AGGRESSION; PHYSIOLOGY},
language = {eng},
issn = {2045-2322},
journal = {Scientific Reports},
title = {Costly neighbours: Heterospecific competitive interactions increase metabolic rates in dominant species},
url = {https://www.nature.com/articles/s41598-017-05485-9},
volume = {7},
year = {2017}
}
TY - JOUR
ID - 1387277
AU - Janča, Matouš - Gvoždík, Lumír
PY - 2017
TI - Costly neighbours: Heterospecific competitive interactions increase metabolic rates in dominant species
JF - Scientific Reports
VL - 7
IS - July
SP - nestránkováno
EP - nestránkováno
PB - NATURE PUBLISHING GROUP
SN - 20452322
KW - INTERFERENCE COMPETITION
KW - INTRASPECIFIC VARIATION
KW - TERRESTRIAL SALAMANDER
KW - ENERGY-METABOLISM
KW - NATURAL-SELECTION
KW - NEWTS
KW - SIZE
KW - CONSEQUENCES
KW - AGGRESSION
KW - PHYSIOLOGY
UR - https://www.nature.com/articles/s41598-017-05485-9
L2 - https://www.nature.com/articles/s41598-017-05485-9
N2 - 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.
ER -
JANČA, Matouš a Lumír GVOŽDÍK. Costly neighbours: Heterospecific competitive interactions increase metabolic rates in dominant species. \textit{Scientific Reports}. LONDON: NATURE PUBLISHING GROUP, roč.~7, July, s.~nestránkováno, 6 s. ISSN~2045-2322. doi:10.1038/s41598-017-05485-9. 2017.
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