Relative melon area (%) and body length sexual dimorphism (%difference) in the 21 species of cetacean used in the independent contrast analysis
| Taxa . | Relative melon area . | Body length sexual dimorphism . | Reference . |
|---|---|---|---|
| Eubalaena glacialis | 0.2 | -7 | Whitehead and Payne (1981) |
| Kogia breviceps | 13.1 | 6 | Evans (1990) |
| Physeter macrocephalus | 23.2 | 52 | Connor et al. (2000) |
| Berardius bairdii | 2.7 | -3 | Connor et al. (2000) |
| Hyperoodon ampullatus | 4.2 | 9 | Connor et al. (2000) |
| Mesoplodon ginkgodens | 2.8 | -4 | Klinowska (1991) |
| Ziphius cavirostris | 4.2 | 1 | Connor et al. (2000) |
| Platanista gangetica | 2.8 | -10 | Connor et al. (2000) |
| Lipotes vexillifer | 1.8 | -24 | Connor et al. (2000) |
| Inia geoffrensis | 2.3 | 11 | Connor et al. (2000) |
| Pontoporia blainvillei | 2.9 | -6 | Connor et al. (2000) |
| Delphinapterus leucas | 5.3 | 15 | Connor et al. (2000) |
| Monodon monoceros | 5.1 | 18 | Connor et al. (2000) |
| Phocoena phocoena | 3.6 | -8 | Connor et al. (2000) |
| Phocoena spinipinnis | 4.4 | -3 | Brownell and Clapham (1999) |
| Globicephala melas | 7.0 | 25 | Bernard and Reilly (1999) |
| Orcinus orca | 2.7 | 16 | Connor et al. (2000) |
| Pseudorca crassidens | 7.1 | 20 | Connor et al. (2000) |
| Tursiops truncatus | 3.5 | 7 | Connor et al. (2000) |
| Grampus griseus | 3.3 | 5 | Connor et al. (2000) |
| Lagenorhynchus obscurus | 4.4 | -1 | Connor et al. (2000) |
| Taxa . | Relative melon area . | Body length sexual dimorphism . | Reference . |
|---|---|---|---|
| Eubalaena glacialis | 0.2 | -7 | Whitehead and Payne (1981) |
| Kogia breviceps | 13.1 | 6 | Evans (1990) |
| Physeter macrocephalus | 23.2 | 52 | Connor et al. (2000) |
| Berardius bairdii | 2.7 | -3 | Connor et al. (2000) |
| Hyperoodon ampullatus | 4.2 | 9 | Connor et al. (2000) |
| Mesoplodon ginkgodens | 2.8 | -4 | Klinowska (1991) |
| Ziphius cavirostris | 4.2 | 1 | Connor et al. (2000) |
| Platanista gangetica | 2.8 | -10 | Connor et al. (2000) |
| Lipotes vexillifer | 1.8 | -24 | Connor et al. (2000) |
| Inia geoffrensis | 2.3 | 11 | Connor et al. (2000) |
| Pontoporia blainvillei | 2.9 | -6 | Connor et al. (2000) |
| Delphinapterus leucas | 5.3 | 15 | Connor et al. (2000) |
| Monodon monoceros | 5.1 | 18 | Connor et al. (2000) |
| Phocoena phocoena | 3.6 | -8 | Connor et al. (2000) |
| Phocoena spinipinnis | 4.4 | -3 | Brownell and Clapham (1999) |
| Globicephala melas | 7.0 | 25 | Bernard and Reilly (1999) |
| Orcinus orca | 2.7 | 16 | Connor et al. (2000) |
| Pseudorca crassidens | 7.1 | 20 | Connor et al. (2000) |
| Tursiops truncatus | 3.5 | 7 | Connor et al. (2000) |
| Grampus griseus | 3.3 | 5 | Connor et al. (2000) |
| Lagenorhynchus obscurus | 4.4 | -1 | Connor et al. (2000) |
Body length sexual dimorphism is given as a percentage difference, positive values for species in which males are longer than females and negative values for species in which females are longer.
Relative melon area is the percentage of the lateral projected body area made up by the melon (see Fig. 3 and text).