Table 1.

Collection records of red swamp crayfish Procambarus clarkii from a small pond in Yokohama, Japan, in 2011

Month	Number of days collecting crayfish	Number of crayfish
		Female	Female (ND)	Male
April	2	43	2	26
May	3	56	3	54
June	5	117	2	105
July	4	130	2	122
August	2	30	0	15
September	4	97	1	54
October	2	28	1	34
November	4	34	0	46
December	3	18	2	20

ND: The sexual maturity of some females could not be determined because of the loss of both chelipeds.