Cardiosoma armatum

	Right Chelae		Left Chelae
Period	*Cardiosoma Guanhumi*	*Cardioso maarmatum*	*Cardioso maguanhumi*	*Cardioso maarmatum*
Feb	9.84 ± 0.18 ^a	9.91 0.21 ^b	10.22 ± 0.24 ^a	9.35 ± 6.08 ^b
Mar	9.80 ± 0.22 ^a	9.76 ± 0.28 ^a	10.45 ± 0.311 ^a	10.32 ± 0.28 ^a
April	7.94 ± 035 ^a	10.28 ± 0.29 ^b	9.21 ± 0.32 ^a	9.73 ± 0.31 ^a
May	6.98 ± 0.23 ^a	7.17 ± 0.23 ^a	8.32 ± 0.23 ^a	8.22 ± 0.24 ^a
June	7.04 ± 0.26 ^a	8.19 ± 0.25 ^b	8.75 ± 0.24 ^a	9.20 ± 0.22 ^a
July	8.39 ± 0.25 ^a	10.13 ± 0.21^b	9.15 ± 0.26 ^a	9.24 ± 0.05 ^a

Table 4: T-test of Right and Left Chelae for Cardiosoma armatum and Cardiosoma guahunmi from the Lagos Lagoon mangrove swamps in Nigeria (February- July, 2012).