Effects of metamorphosis timing and the larval growth rate on the latitudinal distribution of sympatric freshwater eels, Anguilla japonica and A. marmorata, in the western North Pacific

Zoological Studies

Table 2 Pigmentation stages of glass eels of Anguilla japonica and Anguilla marmorata collected from various rivers and estuaries in East Asia

Species	Sampling site	Number	Pigmentation stage
Species	Sampling site	Number	V_A	V_B	VI_A1	VI_A2	VI_A3	VI_A4	VI_B
A. japonica ^a	Tungkang River, Taiwan	30	28	2	0	0	0	0	0
	Tungkang River, Taiwan	30	24	6	0	0	0	0	0
	Shuangshi River, Taiwan	30	13	17	0	0	0	0	0
	Shuangshi River, Taiwan	30	9	16	5	0	0	0	0
	Mingchiang River, China	30	24	6	0	0	0	0	0
	Chyantarng River, China	30	21	9	0	0	0	0	0
	Yalu River, China	30	0	1	21	7	1	0	0
	Ichinomiya River, Japan	30	5	20	4	1	0	0	0
Total		240	124	77	30	8	1	0	0
% composition			51.7	32.1	12.5	3.3	0.4	0	0
A. marmorata	Cagayan River, the Philippines	45	15	30	0	0	0	0	0
	Hsiukuluan River, Taiwan	86	65	21	0	0	0	0	0
	Kurio River, Japan	37	13	24	0	0	0	0	0
Total		168	93	75	0	0	0	0	0
% composition			55.4	44.6	0	0	0	0	0