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7 results for “critical thermal limits”
Fig. 1 in Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)
Fig. 1. Thermal tolerance limits of Poecilia caucana. Values represent mean ± SD in critical thermal limits estimated for each acclimation temperature. Letters represent significant differences in the Tukey post-hoc test using α=0.05.
Fig. 3 in Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)
Fig. 3. Comparison of acclimation capacity for Poecilia caucana (Pc, bold letter and thicker line) and a sample of species with CT and acclimation temperature values available in the literature. Lines join acclimation capacities for CTmin and CT max of the same species, when both values are available. Symbols are jittered in the horizontal axis to avoid crowding. Abbreviations as in Fig. 2 except for Ap = Alosa pseudoharengus (Otto et al., 1976); Cn = Cyprinodon nevadensis (Feldmeth et al., 1974); Cs = Cyprinodon sp. (Otto & Gerking, 1973); Fh = Fundulus heteroclitus (Bulger & Tremaine, 1985); Ga = Gambusia affinis (Otto, 1973, 1974); Oc = Oncorhynchus clarkii (Heath, 1963).
Fig. 2 in Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)
Fig. 2. Comparison of Critical Thermal (CT) limits for Poecilia caucana (Pc, grey polygon) and a sample of species with CTmin and CT max data available in the literature. Polygons are formed by two vertical lines representing the CT tolerance ranges observed at the lowest and highest acclimation temperatures used in each study. The polygons have an arbitrary width that does not reflect the range of acclimation temperatures used among different studies. The top and bottom lines of each polygon join, respectively, the CT max and CTmin values for each species. Three species (N, Ns, and P) having data for only one acclimation temperature are represented by vertical lines. Pf = Prochilodus scrofa (currently Prochilodus lineatus), fry, and Ps = P. scrofa, adults (Barrionuevo & Fernandes, 1995); Ca = Carassius auratus (Ford & Beitinger, 2005); Cc = Catla catla and Cm = Cirrhinus mrigala (Das et al., 2004); Cp = Cyprinus carpio (Chatterjee et al., 2004); Danio rerio, transgenic breed, and D. rerio, wild (Cortemeglia & Beitinger, 2005); Sb = Siphateles bicolor (McClanhan et al., 1986); Lr = Labeo rohita (Chatterjee et al., 2004; Das et al., 2004); N = Notropis chrysocephalus, Ns = N. spilopterus, P = Pimephales notatus (Hockett & Mundahl, 1989); Ro = Rhinichthys osculus (Kaya et al., 1992); Hb = Horabagrus_brachysoma (Dalvi et al., 2009); Ip = Ictalurus punctatus (Currie et al., 1998); Pp = Pangasius pangasius (Debnath et al., 2006); Om = Oncorhynchus mykiss (Currie et al., 1998); Cv = Cyprinodon variegatus (Bennett & Beitinger, 1997); Pc = Poecilia caucana (this study); Xm = Xiphophorus maculatus (Prodocimo & Freire, 2001); Ms = Micropterus salmoides (Currie et al., 1998).
Data from: Physiology at near-critical temperatures, but not critical limits, varies between two lizard species that partition the thermal environment
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Data from: Critical thermal limits affected differently by developmental and adult thermal fluctuations
Means and variances of the environmental thermal regime play an important role in determining the fitness of terrestrial ectotherms. Adaptive phenotypic responses induced by heterogeneous temperatures have been shown to be mediated by molecular pathways independent of the classic heat shock responses, however, an in-depth understanding of plasticity induced by fluctuating temperatures is still lacking. We investigated high and low temperature acclimation induced by fluctuating thermal regimes at two different mean temperatures, at two different amplitudes of fluctuation and across the developmental and adult life stages. For developmental acclimation, we found mildly detrimental effects of high amplitude fluctuations for critical thermal minima, while the critical thermal maxima showed a beneficial response to higher amplitude fluctuations. For adult acclimation involving shifts between fluctuating and constant regimes, cold tolerance was shown to be dictated by developmental temperature conditions irrespective of the adult treatments, while the acquired heat tolerance was readily lost when flies developed at fluctuating temperature were shifted to a constant regime as adults. Interestingly, we also found that effect of fluctuations at any life stage was gradually lost with prolonged adult maintenance suggesting a more prominent effect of fluctuations during developmental compared to adult acclimation in Drosophila melanogaster.
Data from: Critical thermal limits affected differently by developmental and adult thermal fluctuations
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Data on thermal fertility limits, critical thermal limits and Drosophila distributions
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