Feeding causes thermophily in the woodhouse's toad (Bufo woodhousii)

Hot bodies protect amphibians against chytrid infection in nature

“…Individuals that choose relatively high body temperatures for other reasons, i.e. to aid in growth, digestion9, or reproduction3 may have coincidentally decreased their probability of Bd infection. While Bd remains endemic, any tendency to maintain higher body temperatures could be reinforced by natural selection.…”

“…Increases in mean body temperature at the population level could reflect adaptive responses of individuals to infection, shifting thermal preferences to produce “behavioural fever”8. However it could also result from selective sweeps in which individuals that attain higher temperatures for other reasons9 are more likely to survive during outbreaks of chytridiomycosis. Understanding such population-level responses and determining their implications for the management of amphibian populations requires information on the individual-level patterns that underlie the population-level relationships.…”

Postprandial thermophily of Chinese green tree vipers, Trimeresurus s. stejnegeri: Interfering factors on snake temperature selection in a thigmothermal gradient

“…They include: (1) a thermocouple inserted into the cloaca and fixed on the body (Sievert and Hutchison, 1988;Touzeau and Sievert, 1993;Tu and Hutchison, 1995;Firth and Belan, 1998); (2) a radiotransmitter implanted into the coelom (Slip and Shine, 1988;Christian and Weavers, 1996;Scha¨uble and Grigg, 1998;BlouinDemers and Weatherhead, 2001a), or taped to the dorsal surface (Kearney and Predavec, 2000;Witters and Sievert, 2001), or ingested (Lutterschmidt and Reinert, 1990); (3) an infrared thermometer to detect the surface temperature of snakes (Shine and Madson, 1996;Tosini and Avery, 1996;Christian et al, 1998); (4) a quick-reading thermometer inserted into the cloaca after the animal is captured from the gradient (Robertson and Weatherhead, 1992;Curtin, 1998;Rock et al, 2000;Belliure and Carrascal, 2002;Le Galliard et al, 2003); and (5) indirect T b , measured by recording substrate temperature (Lutterschmidt and Reinert, 1990;Blouin-Demers et al, 2000). In these diversified methods, only methods (3) and (5) were not bodyinvasive, other methods may interfere with the snake's behavior or physiology (Lutterschmidt and Reinert, 1990;Peterson et al, 1993).…”

Postprandial thermophily in the Danube crested newt, Triturus dobrogicus

“…In many species, food processing is associated with preference for higher body temperatures (Javaid and Anderson, 1967;Lillywhite et al, 1973;Feder, 1982;Slip and Shine, 1988;Sievert, 1989;Blouin-Demers and Weatherhead, 2001;Witters and Sievert, 2001). In contrast, some ectotherms decrease their body temperatures after feeding (Javaid and Anderson, 1967;Hammerson, 1987;Morgan and Metcalfe, 2001), whereas no statistically significant change in postprandial temperature preferences was found in others (Sievert, 1989;Tu and Hutchison, 1995;Brown and Weatherhead, 2000;Moore and Sievert, 2001).…”