Table 6.
Female life history traits for Poecilia mexicana from three different habitat types, sampled before and after the 2007 flood (Means ± S.E.).
| Population | Sampling | SL [mm] | Female lean weight [g]a | Female fat content [%]a | Fecunditya | Embryo dry weight [mg]b | Embryo fat content [%]b | Reproductive allocation [%]b,c |
|---|---|---|---|---|---|---|---|---|
| CA (toxic cave) |
pre-flood (N = 16) |
35.94 ± 1.26 | 0.19 ± 0.02 | 6.07 ± 0.91 | 3.83 ± 1.69 | 8.17 ± 0.36 | 16.97 ± 1.01 | 12.51 ± 1.17 |
| post-flood (N = 21) |
37.76 ± 0.91 | 0.19 ± 0.01 | 6.29 ± 0.80 | 3.88 ± 1.48 | 8.17 ± 0.31 | 14.55 ± 0.87 | 14.69 ± 1.02 | |
| EAI (toxic surface) |
pre-flood (N = 8) |
30.00 ± 0.71 | 0.29 ± 0.02 | 5.34 ± 1.36 | 11.59 ± 2.51 | 5.29 ± 0.53 | 22.12 ± 1.50 | 10.32 ± 1.74 |
| post-flood (N = 19) |
32.05 ± 1.15 | 0.28 ± 0.02 | 1.79 ± 0.89 | 12.41 ± 1.64 | 4.46 ± 0.35 | 16.32 ± 0.97 | 13.84 ± 1.13 | |
| RA (benign surface) |
pre-flood (N = 25) |
33.84 ± 0.71 | 0.23 ± 0.01 | 13.54 ± 0.75 | 13.23 ± 1.38 | 2.61 ± 0.29 | 23.33 ± 0.82 | 10.89 ± 0.95 |
| AB (benign surface) |
post-flood (N = 37) |
42.84 ± 1.33 | 0.28 ± 0.01 | 7.43 ± 0.69 | 21.84 ± 1.27 | 3.75 ± 0.27 | 19.30 ± 0.75 | 20.29 ± 0.87 |
a Estimated marginal means from a GLM with SL as a covariate.
b Estimated marginal means from a GLM with SL and Embryo Stage as covariates.
c Reproductive allocation: Proportion of total dry weight which consists of developing embryos.