The thermal dependence of food assimilation and locomotor performance in southern grass lizards, Takydromus sexlineatus (Lacertidae)

Ecological Networks in a Changing Climate

“…At present, there is still no firm consensus among the still too-few studies that have estimated the temperature dependence of ingestion (Kingsolver and Woods, 1998;Rall et al, 2010;Sarmento et al, 2010;Thompson, 1978;Woodward and Hildrew, 2002a) and assimilation rates (e.g. Giguere, 1981;Short and Ward, 1981a,b;Zhang and Li, 2004).…”

Low repeatability of preferred body temperature in four species of Cordylid lizards: Temporal variation and implications for adaptive significance

“…Photothermal gradients have been used extensively in other studies (e.g. Castilla and Bauwens 1991;Le Galliard et al 2003;Zhang and Ji 2004), some showing that T sel corresponded with T opt for locomotor performance (e.g. Bauwens et al 1995) and digestion (Angilletta 2001).…”

Cautionary notes on the descriptive analysis of performance curves in reptiles

“…ANOVA is often used to analyse the effect of T b on performance in reptiles (Ji et al, 1993(Ji et al, , 1996Du et al, 2000;Angilletta et al, 2002a;Chen et al, 2003;Elsworth et al, 2003;Zhang and Ji, 2004). In general, the performance of several individuals is measured at various T b (usually 4-6) encompassing the range of T b experienced by the animal (i.e., within the CT).…”

“…One of their goals was to stimulate research in whole animal performance. In recent years, several laboratory studies have quantified the thermal reaction norms of organismal traits in reptiles (Ji et al, 1993;Witz and Lawrence, 1993;Scribner and Weatherhead, 1995;Ji et al, 1996;Du et al, 2000;Angilletta et al, 2002a;BlouinDemers et al, 2003;Chen et al, 2003;Elsworth et al, 2003;Zhang and Ji, 2004). Despite Huey and Stevenson's (1979) comprehensive discussion, however, we believe that the descriptive analysis of thermal reaction norms of reptiles in recent papers often provides incomplete information and, in some cases, is biologically misleading.…”

“…The relationship between body temperature (T b ) and performance (i.e., the thermal reaction norm) is often used to evaluate and predict the effects of environmental temperature on reptile ecology (Tracy and Christian, 1986;Huey, 1991;Weatherhead and Robertson, 1992;Angilletta et al, 2002a) and to study evolutionary patterns in thermal physiology (Huey and Bennett, 1987;Huey and Kingsolver, 1989;Angilletta et al, 2002b;Blouin-Demers et al, 2003;Zhang and Ji, 2004). Appropriate description and analysis of the relationship between T b and performance is therefore paramount to interpret properly evolutionary and ecological trends in thermal ecology and evolutionary physiology.…”