Table 1.

Summary of the samples.

Source of the Samples	Month												Total
	AUG	SEP	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL
Guangzhou	1	0	2	0	1	2	0	0	0	2	6	1	15
Foshan	40	42	42	25	15	6	7	11	43	49	70	44	394
Zhaoqing	7	5	3	12	0	2	1	3	1	2	3	2	41
Jiangmen	2	3	0	2	0	2	0	5	1	6	1	11	33
Other cities	5	4	3	1	4	4	1	2	2	5	6	12	49
Total	55	54	50	40	20	16	9	21	47	64	86	70	532

Note: Other cities: Shenzhen, Dongguan, Huizhou, Zhuhai, and Zhongshan, i.e., five cities in the Pearl River Delta region that are not major breeding areas for largemouth bass.