Table 3.

Mean (± S.E.) percent fiber-types determined by stereological methods (area) and direct count, using the succinic dehydrogenase assay for respiratory muscles of bottlenose dolphins (Tursiops truncatus).

	% Type I		% Type IIa		% Type IIb
Muscle	Area	Count	Area	Count	Area	Count
Sternohyoid	28.7 ± 3.0	34.1 ± 1.8	19.9 ± 2.0	20.7 ± 2.0	51.4 ± 2.0	45.2 ± 1.3
Sternocephalicus	30.8 ± 4.7	37.5 ± 3.9	17.6 ± 2.8	23.0 ± 2.8	51.6 ± 2.3	39.5 ± 1.8
Rectus abdominis - cranial	29.2 ± 1.3	35.1 ± 1.3	16.1 ± 1.8	19.7 ± 1.8	54.7 ± 1.5	45.2 ± 1.5
Rectus abdominis - umbilicus	24.3 ± 4.4	32.5 ± 4.4	16.7 ± 2.2	19.7 ± 2.2	59.1 ± 2.9	47.8 ± 2.9
Rectus abdominis - caudal	28.7 ± 3.3	40.2 ± 3.3	13.2 ± 2.1	13.2 ± 2.1	58.1 ± 3.7	46.6 ± 3.7