Table 2.
Effects of family lineage and treatment on developmental parameters in Nephila fenestrata and N. senegalensis
| Explanatory variable | Duration of development (start to maturity) | Duration of subadult stage | Adult size | Adult weight | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| χ 2 | p | df | χ 2 | p | df | χ 2 | p | df | χ 2 | p | df | |
| N. fenestrata | ||||||||||||
| Family lineage | 50.65 | <.0001 | 5 | 14.6 | 0.012 | 5 | 67.07 | <.0001 | 5 | 61.86 | <.0001 | 5 |
| Treatment | 0.002 | 0.961 | 1 | 2.08 | 0.15 | 1 | 0.73 | 0.391 | 1 | 2 | 0.158 | 1 |
| Family lineage *Treatment |
2.101 | 0.835 | 5 | 2.332 | 0.807 | 5 | 1.588 | 0.903 | 5 | 1.704 | 0.888 | 5 |
| N. senegalensis | ||||||||||||
| Family lineage | 21.89 | 0.0006 | 5 | 22.23 | 0.0005 | 5 | 37.56 | <.0001 | 5 | 40.77 | <.0001 | 5 |
| Treatment | 11.34 | 0.0008 | 1 | 31.01 | <.0001 | 1 | 1.16 | 0.281 | 1 | 2.621 | 0.105 | 1 |
| Family lineage *Treatment |
10.126 | 0.072 | 5 | 7.924 | 0.161 | 5 | 10.58 | 0.06 | 5 | 9.757 | 0.082 | 5 |
Likelihood-ratio tests and corresponding p-values derive from generalized linear models performed in JMP IN 7.0 (SAS Institute Inc., Carey, NC, USA). Non-significant interaction terms were removed from the final models. Developmental durations were log-transformed. Significant p-values are shown in bold