Diagnosability and description of a new subspecies of Indo-Pacific humpback dolphin, Sousa chinensis (Osbeck, 1765), from the Taiwan Strait

Zoological Studies

Table 1 Number of individual dolphins in categories based on relative spotting on dorsal fin versus body

	Dorsal fin spotting		Total
	≥ body	< body	Total
Eastern Taiwan Strait	43	2	45
Jiulong River Estuary + Pearl River Estuary	3	172	175

The dolphins in this table are individuals with obvious spotting on their bodies (score = 2, 3 or 4 in Wang et al. (2008a)). The dorsal fin spotting categories are as follows: spotting intensity on the dorsal fin is greater than or equal to that on the body, and spotting intensity on the dorsal fin is obviously less than that on the body. The observed frequencies were significantly different for the dolphins of the two regions (p << 0.0001, Fisher’s exact test).