Mangrove habitat partitioning by Ucides cordatus (Ucididae): effects of the degree of tidal flooding and tree-species composition during its life cycle

Table 1 Sex ratio (male/female) of Ucides cordatus in each mangrove forest with different predominant tree species (L, Laguncularia racemosa; A, Avicennia schaueriana; and R, Rhizophora mangle), flooding level (Lh less-flooded; Ll more-flooded), and biological period (NB non-breeding season; B breeding season), in Iguape Municipality, State of São Paulo, southeast Brazil

Biological periods/mangrove forests	Males		Females		Sex ratio (M:F)	χ²
Biological periods/mangrove forests	N	%	N	%	Sex ratio (M:F)	χ²
Non-breeding (NB)
Lh	191	77.6	55	22.4	1:0.29	75.18***
Ll	132	58.7	93	41.3	1:0.70	6.76*
A	92	40.5	135	59.5	1:1.47	8.14*
R	95	42.2	130	57.7	1:1.37	5.44*
Breeding (B)
Lh	206	66.9	102	33.1	1:0.49	35.11***
Ll	152	48.3	163	51.7	1:1.07	0.38^ns
A	140	55.8	111	44.2	1:0.80	3.35^ns
R	98	39.7	149	60.3	1:1.52	10.53*
Total (NB + B)
Lh	397	71.7	157	28.3	1:0.39	193.97***
Ll	284	52.6	256	47.4	1:0.90	1.45^ns
A	232	48.5	246	51.5	1:1.06	0.41^ns
R	193	40.9	279	59.1	1:1.44	15.66***
Total	1.106	54.1	938	45.9	1:0.85	13.81**

χ² test of goodness of fit testing the null hypothesis of equal proportions between sexes for each area; * P < 0.05; ** P < 0.01; *** P < 0.001; ^ns P > 0.05

ISSN: 1438-3888