Table 1.
Effect of developmental hypoxia on embryonic and juvenile alligator morphometrics
| Egg Mass, g | Embryo Mass, g | Heart Mass, g | Heart-to-Body Mass, g/g | |
|---|---|---|---|---|
| Embryos | ||||
| Incubated at 21% oxygen (n = 7) | 69.3 ± 4.6 | 33.5 ± 2.4 | 0.11 ± 0.01 | 0.0031 ± 0.0002 |
| Incubated at 10% oxygen (n = 7) | 69.7 ± 4.3 | 23.0 ± 1.4* | 0.09 ± 0.01 | 0.0040 ± 0.0002* |
| Body Mass, g | Snout-Vent Length, cm | Head, cm | Heart Mass, g | Heart-to-Body Mass, g/g | |
|---|---|---|---|---|---|
| Juveniles | |||||
| Incubated at 21% oxygen (n = 11) | 1,399.64 ± 185.03 | 34.55 ± 1.36 | 8.74 ± 0.36 | 2.79 ± 0.28 | 0.0021 ± 0.0001 |
| Incubated at 10% oxygen (n = 6) | 741.92 ± 118.24* | 29.04 ± 1.41* | 7.62 ± 0.37 | 1.85 ± 0.29 | 0.0025 ± 0.0001* |
Values are means ± SE. Morphometric measurements were taken in embryonic alligators at 90% development or 3-yr-old juveniles.
*
Significant difference between oxygen exposure groups, one-way ANOVA, P ≤ 0.05.