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Table 5.

Density of dorsal glands among species

Relative gland density/mm skin
SpeciesGranular*Mucous
R. utricularia 4.09 (1.9) 2.62 (1.0)a,b,c 
P. hypochondrialis 2.67 (1.4) 4.40 (0.6)a 
H. andersonii 2.58 (1.9) 5.06 (0.6)a,b,c 
H. femoralis 1.15 (0.3) 7.27 (4.5)c 
H. avivoca 1.45 (1.2) 5.21 (1.4)a,b,c 
H. gratiosa 1.36 (0.6) 4.43 (1.1)a,b,c 
H. squirella 1.87 (0.9) 5.30 (0.8)a,b,c 
H. cinerea 1.79 (1.5) 3.10 (0.5)a,b 
H. chrysoscelis 1.55 (0.6) 6.66 (1.5)b,c 
P value P=0.25 P=0.02 
Relative gland density/mm skin
SpeciesGranular*Mucous
R. utricularia 4.09 (1.9) 2.62 (1.0)a,b,c 
P. hypochondrialis 2.67 (1.4) 4.40 (0.6)a 
H. andersonii 2.58 (1.9) 5.06 (0.6)a,b,c 
H. femoralis 1.15 (0.3) 7.27 (4.5)c 
H. avivoca 1.45 (1.2) 5.21 (1.4)a,b,c 
H. gratiosa 1.36 (0.6) 4.43 (1.1)a,b,c 
H. squirella 1.87 (0.9) 5.30 (0.8)a,b,c 
H. cinerea 1.79 (1.5) 3.10 (0.5)a,b 
H. chrysoscelis 1.55 (0.6) 6.66 (1.5)b,c 
P value P=0.25 P=0.02 

Density of dorsal glands is per 1 mm skin length.

Values are means ± s.d.

*

No significant difference for granular values.

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