The multiplication rate of amoebae related to the cultivation temperature

Sopina, V. A.

doi:10.1016/0306-4565(76)90015-2

Cited by 13 publications

(2 citation statements)

References 15 publications

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“…identified two apparently conflicting views concerning adaptations of ectotherms to their thermal environments, The "static" view maintains that physiological adaptations to temperature of closely related ectotherms are evolutionarily fixed and do not evolve readily to match activity body temperatures experienced by local populations (Bogert, 1949;Ushakov, 1964;Brown and Feldmeth, 1971;Hertz et al, 1983;Crowley, 1985), The "labile" view holds that physiological systems evolve readily and that patterns of physiological adaptations to temperature match patterns of body temperature experienced by active animals in nature (Moore, 1949;Hutchison, 1961;Sopina, 1976;Miller and Packard, 1977;Hertz, 1979). Most data presented in support ofeither view are indirect measures of the thermal sensitivity of physiological performance: such measures include critical thermal maxima (high body temperatures at which animals can no longer right themselves), temperatures selected in a laboratory thermal gradient, or mean body temperatures in the field.…”

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Evolutionary Patterns of the Thermal Sensitivity of Sprint Speed in Anolis Lizards

Berkum¹

1986

Evolution

100

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I present evidence that the thermal sensitivity of sprint speed of Anolis lizards has evolved to match the activity body temperatures (T b ) experienced by local populations in nature. Anolis lizards from a range of altitudes in Costa Rica have limited thermoregulatory abilities and consequently have field T; that differ substantially in median and interquartile distance (a measure of variability). Experimentally determined maximal sprint temperatures (T; at which lizards run fastest) were positively correlated with median field Ti; and performance breadths (ranges of T b over which lizards run well) were correlated with the variability (interquartile distance) offield T; in the species I examined, Such correlations would be expected if the thermal sensitivity of sprint speed and field T; had evolved together to improve the sprint performance of lizards in nature, Integration of laboratory and field studies indicates that several species of Anolis regularly experience impaired sprint speeds in the field, despite apparent evolutionary modification of their thermal physiologies. However, this impairment would have been more severe if the thermal sensitivities of sprint speed had not evolved.Data from other groups of lizards indicate that the thermal sensitivity of sprint speed has not evolved to match T; of local populations (Hertz et al., 1983;Crowley, 1985). These lizards experience less variable T; and less impairment of sprint speeds in the field than do the anoles, Thus, selection for modification of the thermal sensitivity of sprint speed might have been stronger for anoles than for other groups of lizards.

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Evolutionary Patterns of the Thermal Sensitivity of Sprint Speed in Anolis Lizards

Berkum¹

1986

Evolution

100

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“…(ii) The "labile" view, based largely on recent studies of tropical iguanid lizards (Huey, 1982a), argues that thermal physiology does respond readily to directional selection in some taxa (see also Moore, 1939;Hutchison, 1976;Sopina, 1976;Miller and Packard, 1977;Hirshfield et aI., 1980). In the tropical iguanid genus Anolis, mean activity temperature in nature and preferred body temperatures in laboratory thermal gradients (Ruibal, 1960;Rand, 1964a; Corn, 1971;Clark and Kroll, 1974;Huey and Webster, 1976), the range of activity temperatures (Ruibal and Philibosian, 1970;Huey and Webster, 1975;Lister, 1976;Hertz, 1982), and Critical Thermal Maxima (Hertz, 1979) often differ markedly among closely related species and vary in concert with environmental temperatures.…”

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Homage to Santa Anita: Thermal Sensitivity of Sprint Speed in Agamid Lizards

1983

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Ectotherms can compensate for geographical and temporal changes in the thermal environment in several ways: by behavioral regulation, by physiological acclimatization, and by genetic differentiation among populations. Most lizards (Bogert, 1949;Huey, 1982a) compensate by using fast-acting behavioral shifts (e.g., changes in time of activity and in basking activity), and many species also show supplementary (and slower) acclimatory responses (Corn, 1971;Spellerberg, 1972;Hertz, 1981). Whether closely related lizards living in thermally distinctive environments also show genetic adaptation in thermal physiology (Hertz et aI., 1979) has frequently been debated-often in the pages of this journal. Two competing views have emerged over the last three decades.(i) The "static" view, based largely on studies of desert lizards (Bogert, 1949; see also Ushakov, 1964;Brown and Feldmeth, 1971;Hutchison, 1976), emphasizes that thermal physiology is evolutionarily conservative and thus relatively insensitive to directional selection. This view is derived from the empirical generalization that aspects of thermal physiology of lizards typically show little differentiation within or among closely related taxa from climatically distinctive habitats. Because these taxa effectively adjust their thermoregulatory behaviors to local environmental conditions, geographic variation in body temperatures during activity-and

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Amoeba and Other Protozoa

Yudin¹

1990

Animal Species for Developmental Studies

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The multiplication rate of amoebae related to the cultivation temperature

Cited by 13 publications

References 15 publications

Evolutionary Patterns of the Thermal Sensitivity of Sprint Speed in Anolis Lizards

Evolutionary Patterns of the Thermal Sensitivity of Sprint Speed in Anolis Lizards

Homage to Santa Anita: Thermal Sensitivity of Sprint Speed in Agamid Lizards

Amoeba and Other Protozoa

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