Acute adjustment of thermal tolerance in vertebrate ectotherms following exposure to critical thermal maxima

Maness, Joseph D.; Hutchison, Victor H.

doi:10.1016/0306-4565(80)90026-1

Cited by 62 publications

(35 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In all cases, acclimation to these regimes resulted in increased T cmax and tolerances were similar to what would be expected if fish were acclimated to the peak temperature (Otto, 1973). Results of that and similar studies are usually explained as an effect of heat hardening (Maness & Hutchison, 1979) and do not imply that the variability itself is as important as exposure to peak temperatures. While fish were not acclimated to variable regimes, the data suggest that for a given acclimation, fish developing in more variable regimes have greater tolerance than those from the stable regimes at the same mean temperature.…”

Section: Discussionmentioning

confidence: 99%

Developmental plasticity in the thermal tolerance of zebrafish Danio rerio

Schaefer

Ryan

2006

Journal of Fish Biology

204

174

View full text Add to dashboard Cite

To evaluate developmental plasticity in thermal tolerance of zebrafish Danio rerio, commonstock zebrafish were reared from fertilization to adult in the five thermal regimes (two stable, two with constant diel cycles and one stochastic diel cycle) and their thermal tolerance at three acclimation temperatures compared. The energetic cost of developing in the five regimes was assessed by measuring body size over time. While acclimation accounted for most of the variability in thermal tolerance, there were also significant differences among fish reared in the different regimes, regardless of acclimation. Fish reared in more variable environments (as much as AE6°C diel cycle) had a greater tolerance than those from non-variable environments at the same mean temperature. Fish from the more variable environments were also significantly smaller than those from non-variable environments. These results indicate that the thermal history of individual zebrafish induces irreversible changes to the thermal tolerance of adults.

show abstract

Section: Discussionmentioning

confidence: 99%

Developmental plasticity in the thermal tolerance of zebrafish Danio rerio

Schaefer

Ryan

2006

Journal of Fish Biology

204

174

View full text Add to dashboard Cite

show abstract

“…To investigate heat tolerance, we used multiple-lines of evidence and tested for infection-related diVerences in (1) heat-hardening response, i.e., a rapid, transitory increase in heat tolerance following brief exposures to near-lethal temperatures that persists on the order of days (Bowler 2005;Maness and Hutchison 1980), (2) time to onset of heat coma (sensu McMahon 1976 as applied to gastropods: active crawling was arrested, the foot curled, and the specimen was unresponsive to touch) upon exposure to high temperature, and (3) time to recover mobility following this heat exposure. To control temperature, snails were contained individually in seawater-Wlled polystyrene well plates (BD Falcon 351143; 3 £ 4 wells per plate; 6.0-ml wells) that were Xoated in a water bath at the appropriate temperature and monitored with a digital thermometer (VWR, §0.2°C).…”

Section: Methodsmentioning

confidence: 99%

Parasitized snails take the heat: a case of host manipulation?

et al. 2011

View full text Add to dashboard Cite

Infection-induced changes in a host's thermal physiology can represent (1) a generalized host response to infection, (2) a pathological side-effect of infection, or (3), provided the parasite's development is temperature-dependent, a subtle case of host manipulation. This study investigates parasite-induced changes in the thermal biology of a first intermediate host infected by two castrating trematodes (genera Maritrema and Philophthalmus) using laboratory experiments and field surveys. The heat tolerance and temperatures selected by the snail, Zeacumantus subcarinatus, displayed alterations upon infection that differed between the two trematodes. Upon heating, snails infected by Maritrema sustained activity for longer durations than uninfected snails, followed by a more rapid recovery, and selected higher temperatures in a thermal gradient. These snails were also relatively abundant in high shore localities in the summer only, corresponding with seasonal elevated microhabitat temperatures. By contrast, Philophthalmus-infected snails fell rapidly into a coma upon heating and did not display altered thermal preferences. The respective heat tolerance of each trematode corresponded with the thermal responses induced in the snail: Maritrema survived exposure to 40°C, while Philophthalmus was less heat tolerant. Although both trematodes infect the same tissues, Philophthalmus leads to a reduction in the host's thermal tolerance, a response consistent with a pathological side effect. By contrast, Maritrema induces heat tolerance in the snail and withstood exposure to high heat. As the developmental rate and infectivity of Maritrema increase with temperature up to 25°C, one adaptive explanation for our findings is that Maritrema manipulates the snail's thermal responses to exploit warm microhabitats.

show abstract

“…This technique has been critically evaluated by numerous reviewers (Hutchison, 1976;Reynolds & Casterlin, 1979) and is well established as a ' powerful tool for studying the physiology of stress and adaptation in fishes ' (Paladin0 et al, 1980). Fish were heated individually from ambient temperature in a 2000 ml distillation flask at a rate of 1" C min-' (Maness & Hutchison, 1980). Flasks were aerated during tests to insure uniformity of heat transfer and to preclude oxygen depletion during tests.…”

Section: Methodsmentioning

confidence: 99%

Intraspecific differences in thermal tolerance of Etheostoma spectabile (Agassiz) in constant versus fluctuating environments

Feminella

Matthews

1984

Journal of Fish Biology

View full text Add to dashboard Cite

The critical thermal maximum (CTM) of Efheosforna specfabile differed significantly among four populations whose habitats ranged from thermally constant to highly fluctuating conditions. Mean CTM of the population at the most fluctuating location was highest, populations in intermediate thermal environments were intermediate in thermal tolerance, and a population in a constant temperature spring run had thelowest CTM. The results support the view that thermal physiology a n be evolutionarily labile within a species, and that changes respond to directional selection.

show abstract

Acute adjustment of thermal tolerance in vertebrate ectotherms following exposure to critical thermal maxima

Cited by 62 publications

References 25 publications

Developmental plasticity in the thermal tolerance of zebrafish Danio rerio

Developmental plasticity in the thermal tolerance of zebrafish Danio rerio

Parasitized snails take the heat: a case of host manipulation?

Intraspecific differences in thermal tolerance of Etheostoma spectabile (Agassiz) in constant versus fluctuating environments

Contact Info

Product

Resources

About