Table 2.
Differences in thermal tolerance among the species and populations of the A. brunneus complex
| A) General ANOVA | ||||||||
|---|---|---|---|---|---|---|---|---|
| Comparison | Sum of squares | d.f. | Quadratic mean | F | Sig. | Power | ||
| UTL | species | 2.1 | 2 | 1.0 | 0.46 | 0.6 | 0.12 | |
| population | 72.1 | 4 | 18.0 | 27.20 | <0.001 | 1.00 | ||
| LTL | species | 77.8 | 2 | 38.9 | 10.90 | <0.001 | 0.99 | |
| population | 113.8 | 4 | 28.4 | 9.87 | <0.001 | 1.00 | ||
| B) post-hoc Tukey | ||||||||
| c.i. (95 %) | ||||||||
| Comparison | sp (I) | sp (J) | Mean difference (I-J) | Std.e. | Sig. | Lower limit | Upper limit | |
| UTL | species | 1 | 2 | −0.42 | 0.50 | 0.7 | −1.63 | 0.79 |
| 3 | 0.04 | 0.57 | 1.0 | −1.33 | 1.41 | |||
| 2 | 3 | 0.46 | 0.58 | 0.7 | −0.94 | 1.86 | ||
| population | 1 | 2 | 3.69 | 0.37 | <0.001 | 2.62 | 4.75 | |
| 3 | 4 | 1.37 | 0.47 | <0.05 | 0.04 | 2.69 | ||
| LTL | species | 1 | 2 | −2.96 | 0.65 | < 0.001 | −4.53 | −1.40 |
| 3 | −1.80 | 0.69 | <0.05 | −3.47 | −0.13 | |||
| 2 | 3 | 1.16 | 0.73 | 0.26 | −0.61 | 2.94 | ||
| population | 1 | 2 | 2.70 | 0.76 | <0.01 | 0.52 | 4.87 | |
| 3 | 4 | 0.08 | 10.96 | 1.0 | −3.11 | 3.14 | ||
In “comparison”, “species” refer to the comparison of the three species (pooling the two populations of A. ramblae and A. brunneus respectively; 1, A. brunneus; 2, A. ramblae; 3, A. rufulus); “population” refers to the comparison of the five populations (1, A. brunneus from south Spain, Cádiz; 2, A. brunneus from northeast Spain, Girona; 3, A. ramblae from southeast Spain, Murcia; 4, A. ramblae from central Morocco, Tinghir). UTL, upper thermal limit; LTL, lower thermal limit; d.f., degrees of freedom; Sig., significance; Std.e, standard error; c.i. confidence interval.