Table 3. Parameters of reduced major axis regressions between body dimensions and tests for allometry.
Parameters (with 95% confidence intervals, CI) of reduced major axis regressions with Ln-transformed values of dependent (Y) and independent (X) variables for pueruli and first juveniles of Panulirus argus collected in Puerto Morelos and Bahía de la Ascensión between August 2012 and September 2013. Regressions were computed separately for pueruli and first-stage juveniles. The last three columns refer to the type of allometry of length dimensions tested against a H0 : b = 1, and of weight tested against a H0 : b = 3 with Student’s t tests.
| Y | X | Stage | Intercept a (95% CI) | Slope b (95% CI) | N | r2 | t | p | Allometry |
|---|---|---|---|---|---|---|---|---|---|
| Ln TL | Ln CL | Puerulus | 1.096 (0.991, 1.205) | 0.990 (0.930, 1.049) | 372 | 0.640 | −0.307 | 0.380 | Isometry |
| First juvenile | 1.175 (1.030, 1.331) | 0.965 (0.878, 1.045) | 226 | 0.597 | −0.806 | 0.211 | Isometry | ||
| Ln CH | Ln CL | Puerulus | −2.625 (−2.924, −2.286) | 1.920 (1.734, 2.083) | 380 | 0.315 | 9.951 | <0.001 | Positive |
| First juvenile | −1.114 (−1.311, −0.916) | 1.336 (1.227, 1.443) | 226 | 0.584 | 5.477 | <0.001 | Positive | ||
| Ln CW | Ln CL | Puerulus | −0.723 (−0.849, −0.574) | 1.117 (1.034, 1.186) | 380 | 0.625 | 3.148 | <0.001 | Positive |
| First juvenile | −0.515 (−0.656, −0.380) | 1.062 (0.989, 1.139) | 226 | 0.711 | 1.560 | 0.060 | Isometry | ||
| Ln W | Ln CL | Puerulus | −0.636 (−0.924, −0.320) | 2.867 (2.691, 3.025) | 380 | 0.716 | −1.625 | 0.052 | Isometry |
| First juvenile | −0.437 (−0.768, −0.105) | 2.976 (2.794, 3.158) | 226 | 0.783 | −0.252 | 0.401 | Isometry |
Notes.
- CL
- carapace length
- CH
- carapace height
- CW
- carapace width
- TL
- total length
- W
- body weight