Consulta: subjectFacets:"Maximum metabolic rate"
Registros recuperados: 3
Data/hora: 02/06/2024 13:01:05

Individuals exhibit consistent differences in their metabolic rates across changing thermal conditions
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Auer, Sonya K.; Salin, Karine; Anderson, Graeme J.; Metcalfe, Neil B.
Metabolic rate has been linked to growth, reproduction, and survival at the individual level and is thought to have far reaching consequences for the ecology and evolution of organisms. However, differences in metabolic rate among individuals must be consistent (i.e. repeatable) over at least some portion of their lifetime in order to predict their longer-term effects on population dynamics and how they will respond to selection. Previous studies demonstrate that metabolic rates are repeatable under constant conditions but potentially less so in more variable environments. We measured the standard (= minimum) metabolic rate, maximum metabolic rate, and aerobic scope (= interval between standard and maximum rates) in juvenile brown trout (Salmo trutta)...
Tipo: Text
Palavras-chave: Aerobic scope; Consistency; Maximum metabolic rate; Standard metabolic rate; Stability; Thermal repeatability.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00414/52585/53425.pdf

Aerobic scope explains individual variation in feeding capacity
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Auer, Sonya K.; Salin, Karine; Anderson, Graeme J.; Metcalfe, Neil B.
Links between metabolism and components of fitness such as growth, reproduction and survival can depend on food availability. A high standard metabolic rate (SMR; baseline energy expenditure) or aerobic scope (AS; the difference between an individual's maximum and SMR) is often beneficial when food is abundant or easily accessible but can be less important or even disadvantageous when food levels decline. While the mechanisms underlying these context-dependent associations are not well understood, they suggest that individuals with a higher SMR or AS are better able to take advantage of high food abundance. Here we show that juvenile brown trout (Salmo trutta) with a higher AS were able to consume more food per day relative to individuals with a lower AS....
Tipo: Text
Palavras-chave: Energy metabolism; Fitness; Food intake; Maximum metabolic rate; Salmo trutta; Standard metabolic rate.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00414/52505/53324.pdf

Intraspecific differences in metabolic rate of Chroeomys olivaceus (Rodentia: Muridae): the effect of thermal acclimation in arid and mesic habitats
Provedor de dados: Revista Chilena de Historia Natural
Autores: Novoa,F. Fernando; Rivera-hutinel,Antonio; rosenmann,Mario; Sabat,Pablo.
Studies of metabolic capacities in rodents have been largely studied at an inter-specific levels, but physiological capacities of populations belonging to the same species have received lesser attention. Here we studied the maximum and basal metabolic rates of two populations of the rodent Chroeomys olivaceus dwelling in habitats with contrasting temperature and rainfall regimes, and to test if differences in metabolic capacities are due to local adaptation or acclimatization effect. After four weeks of acclimation to 25 ºC and 10 ºC, the BMR and MMR were determined in individuals from the northern population of Caleta Loa, and the southern population of La Picada. Individuals from ‘La Picada’ population were heavier than those from Caleta Loa. MMR and BMR...
Tipo: Journal article
Palavras-chave: Basal metabolic rate; Chroeomys olivaceus; Maximum metabolic rate; Population; Phenotypic plasticity.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200004