Table 1.

Pre-copulatory behaviour and female reproductive output (mean ± s.e.) for adult L. hasselti and L. geometricus males that copulate with immature or adult conspecific females (significant comparisons in bold).

variableL. hasselti females (N)L. geometricus females (N)
immaturesadultsstatisticsimmaturesadultsstatistics
web-bound vibratory courtship (proportion of males)0% (11)100% (13)Fisher's exact test p < 0.001100% (17)100% (22)Fisher's exact test, p = 1.0
latency to copulation (min)a155.2 ± 28.3 (11)140.4 ± 17.7 (13)GLMd: Wald Embedded Image p = 0.62044.4 ± 15.2 (18)208.9 ± 13.6 (23)GLM: Wald Embedded Image p < 0.001
fecundityb192.1 ± 24.6 (10)180.5 ± 14.0 (11)GLM: Wald Embedded Image p = 0.6969.8 ± 9.2 (6)87.9 ± 9.2 (9)GLM: Wald Embedded Image p = 0.13
fertilityc90.9% ± 2.5 (10)95.3% ± 0.9 (11)GLM: Wald Embedded Image p = 0.07982.2% ± 10.3 (6)93.7% ± 5.0 (9)GLM: Wald Embedded Image p = 0.98
  • aTime from start of trial until start of the first copulation. This included sustained vibratory signalling (all adult females and L. geometricus with immatures) or males approaching without vibrations (L hasselti with immatures).

  • bNo. viable eggs in the first egg sac produced.

  • c(No. spiderlings/total number of eggs) × 100.

  • dGLM: generalized linear models with gamma link functions with female developmental stage as predictor and latency to copulation, fecundity or fertility as outcomes (SPSS v. 22).