title: Differential responses to thermal variation between fitness metrics.
abstract: Temperature is a major factor affecting population abundance and individual performance. Net reproductive rate (R0) and intrinsic rate of increase (r) differ in their response to different temperature regimes, and much of the difference is mediated by generation time (Tg). Here, we evaluate the effects of thermal mean and variability on R0, r and Tg, at four population densities in Drosophila melanogaster. The results show that R0, r and Tg present differential responses to thermal variation. Although temperature effects on R0 and Tg are non-linear, r response was negligible. R0 and Tg comprise a generational time scale, while r is at a chronological time scale. Thus, we argue that individuals growing under different thermal environments perform similarly on a chronological scale, but differently on a generational scale.
authors: 1] Departamento de Ecología and Center of Applied Ecology & Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 6513677, Chile [2].
authors: Sabrina
authors: S
authors: Clavijo-Baquet
authors: Departamento de Ecología and Center of Applied Ecology & Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 6513677, Chile.
authors: Francisca
authors: F
authors: Boher
authors: Laboratorio de Etología, Ecología y Evolución; Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.
authors: Lucia
authors: L
authors: Ziegler
authors: Departamento de Ecología and Center of Applied Ecology & Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 6513677, Chile.
authors: Sebastián I
authors: SI
authors: Martel
authors: Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile.
authors: Sergio A
authors: SA
authors: Estay
authors: Departamento de Ecología and Center of Applied Ecology & Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 6513677, Chile.
authors: Francisco
authors: F
authors: Bozinovic
mesh_terms: D000818:Animals; D001831:Body Temperature / Q000502:physiology*; D003198:Computer Simulation; D004331:Drosophila melanogaster / Q000502:physiology*; D017753:Ecosystem; D005298:Fertility / Q000502:physiology; D008954:Models, Biological; D012098:Reproduction / Q000502:physiology*; D015996:Survival Rate; D013696:Temperature