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. 2018 Oct 15;6(1):coy056. doi: 10.1093/conphys/coy056

Table 2:

Survival (%), specific growth rate (SGR; % per day) and weight-at-length (g) following thermal acclimation (21 d).

Country Species Parameter Statistical Output Control Control + 2°C Control + 4°C
Brazil Brycon amazonicus Survival (N) F= 6.261; df = 2,6; P = 0.034 58 ± 7a (48) 48 ± 7ab (48) 22 ± 7b (44)
SGR (N)

  • T: F = 2.022; df = 2,6.922; P = 0.203

  • R: F= 1.991; df = 5,17; P = 0.132

 4.504 ± 0.252 (13) 4.341 ± 0.259 (10) 2.859 ± 0.573 (2)

  • Weight-at-length

  • SL = 12.29

  • (N)

  • T: F = 10.287; df = 2,7.797; P = 0.007

  • R: F = 1.528; df = 6,18; P = 0.225

  • C: F = 197.965; df = 1,18; P < 0.001

  • 34.91a

  • [32.06–37.93]

  • (12)

  • 35.16a

  • [31.92–38.82]

  • (10)

  • 49.32b

  • [43.85–55.59]

  • (6)
Colossoma macropomum Survival F= 9.000; df = 2,6; P = 0.016 100 ± 2a (45) 93 ± 2ab (42) 87 ± 2b (39)
SGR (N)

  • T: F = 19.103; df = 2,6.151; P = 0.002

  • R: F= 1.687; df = 6,55; P = 0.142

 2.661 ± 0.085a (24) 2.773 ± 0.093a (21) 1.791 ± 0.097b (19)

  • Weight-at-length

  • SL = 12.52

  • (N)

  • T: F= 1.224; df = 2,6.259; P = 0.356

  • R: F = 1.654; df = 6,62; P = 0.148

  • C: F = 878.391; df = 1,62; P < 0.001

  • 58.48

  • [56.88–59.98]

  • (24)

  • 56.75

  • [55.21–58.34]

  • (24)

  • 56.36

  • [54.83–57.94]

  • (24)
Uganda Oreochromis niloticus Survival (N) F= 0.600; df = 2,6; P = 0.579 96 ± 6 (45) 87 ± 6 (45) 91 ± 6 (45)
SGR (N)

  • T: F = 37.315; df = 2,6.379; P < 0.0001

  • R: F = 0.151; df = 6, 59; P = 0.988

 −0.22 ± 0.057a (23) 0.034 ± 0.055b (24) -0.009 ± 0.060b (21)

  • Weight-at-length

  • SL = 9.38

  • (N)

  • T: F= 2.779; df = 2,5.992; P = 0.481

  • R: F= 0.366; df = 6,62; P = 0.034

  • C: F = 455.052; df = 1,62; P = 0.880

  • 28.38

  • [27.48–29.31]

  • (24)

  • 28.12

  • [27.23–29.04]

  • (24)

  • 29.04

  • [28.12–29.92]

  • (24)
Labeo victorianus Survival (N) F= 0.892; df = 2,6; P = 0.458 92 ± 5 (36) 100 ± 5 (38) 90 ± 5 (39)
SGR (N)

  • T: F = 0.353; df = 2,6.036; P = 0.716

  • R: F= 1.463; df = 6, 57; P = 0.207

 −0.435 ± 0.036 (20) −0.484 ± 0.033 (24) −0.453 ± 0.035 (22)

  • Weight-at-length

  • SL = 11.41

  • (N)

  • T: F= 0.753; df = 2,5.902; P = 0.203

  • R: F= 1.508; df = 6,60; P = 0.131

  • C: F = 2042.919; df = 1,60; P = 0.971

  • 21.73

  • [21.04–22.49]

  • (22)

  • 21.73

  • [21.04–22.44]

  • (24)

  • 21.09

  • [20.42–21.78]

  • (24)
Cambodia Barbonymus gonionotus Survival (N) F= 1.000; df = 2,6; P = 0.422 100 ± 1 (45) 100 ± 1 (45) 98 ± 1 (45)
SGR (N)

  • T: F = 0.819; df = 2,6.009; P = 0.485

  • R: F= 2.216; df = 6, 61; P = 0.053

 0.248 ± 0.033 (23) 0.312 ± 0.032 (24) 0.229 ± 0.033 (23)

  • Weight-at-length

  • SL = 9.88

  • (N)

  • T: F= 6.720; df = 2,5.936; P = 0.030

  • R: F= 1.191; df = 6,62; P = 0.323

  • C: F= 129.400; df = 1,62; P < 0.001

  • 29.04a

  • [27.86–30.20]

  • (24)

  • 31.62b

  • [30.41–32.88]

  • (24)

  • 32.21b

  • [30.97–33.50]

  • (24)
Labeo pierrei Survival (N) F = 0.000; df = 2,6; P = 1.000 100 ± 2 (45) 100 ± 2 (45) 100 ± 2 (45)
SGR (N)

  • T: F = 3.041; df = 2,4.971; P = 0.137

  • R: F= 1.365; df = 5, 54; P = 0.257

 −0.089 ± 0.020ab (22) −0.030 ± 0.018a (16) −0.101 ± 0.015b (24)

  • Weight-at-length

  • SL = 9.48

  • (N)

  • T: F = 2.586; df = 2,4.551; P = 0.532

  • R: F= 0.975; df = 5,55; P = 0.081

  • C: F = 330.116; df = 1,55; P = 0.857

  • 20.09

  • [19.68–20.56]

  • (24)

  • 19.95

  • [19.41–20.46]

  • (16)

  • 19.45

  • [19.01–19.86]

  • (24)

The effect of temperature treatment on survival and SGR was tested using a one-way ANOVA with ‘replicates’ nested within treatment as a factor to control for any potential treatment tank effect. Survival and specific growth rates are shown as means ± SEM. Differences in fish body size between temperature treatments post-acclimation were examined using an ANCOVA of log10 fish weight by treatment with log10 fish standard length as the covariate, with ‘replicates’ nested as above. When the interaction between temperature treatment and log10 fish standard length was not significant, it was removed from the model. Weight-at-length is presented as means [lower—upper 95% confidence interval]. For a given species, values with different letters differ significantly (Holm–Sidak); P ≤ 0.05. In the absence of a significant difference between temperature treatments, letters were omitted. N: number of individuals. SL: standard length (cm). df: degrees of freedom. T: Temperature treatment. R: Replicate. C: Covariate (log10SL). Control temperature in Brazil and Cambodia was 31°C whereas in Uganda Control temperature was 27°C.