We examined the effects of population density on body size and burrow characteristics of Uca bengali Crane, 1975. We predicted that (1) males in high-density areas (HD) should be larger in size and build higher quality burrows than males in low-density areas (LD), and (2) HD females should be larger in size, but build lower quality burrows than LD females, as HD females can find higher numbers of good quality male burrows around them for breeding and egg incubation. Our results showed that males and females in HD were larger in size than those in LD. Since HD males were larger in size, they built higher quality burrows than males in LD. On the other hand, even though LD females were smaller in size than HD ones, they built higher quality burrows than HD females. Our results thus indicate that density effects both body size and burrow characteristics.
Sperm competition and the evolution of mating behavior in Brachyura, with special reference to spider crabs (Decapoda, Majidae). In:
BauerR. T.MartinJ. W. (eds.)
Crustacean sexual biology:
145-163. (Columbia University PressNew York, NY).
FrithD. W.FrithC. B.1977.
Observations on fiddler crabs (Ocypodidae: genus Uca) on Surin Island, Western Peninsular Thailand, with particular reference to Uca tetragonon (Herbst).
Phuket Mar. Biol. Center Res. Bull.18:
HowarthR. W.HobbieJ. E.1982.
The regulation of decomposition and heterotrophic microbial activity in salt marsh soils: a review. In:
KennedyV. S. (ed.)
183-208. (Academic PressNew York, NY).
Underground mating in the fiddler crab Uca tetragonon: the association between female life history traits and male mating tactics.
J. Exp. Mar. Biol. Ecol.248:
LimS. S. L.DiongC. H.2003.
Burrow-morphological characters of the fiddler crab, Uca annulipes (H. Milne Edwards, 1837) and ecological correlates in a lagoonal beach on Pulau Hantu, Singapore.
The influence of fiddler crab burrows and burrowing on metabolic processes in salt marsh sediments. In:
KennedyV. S. (ed.)
283-301. (Academic PressNew York, NY).
RibeiroP. D.IribarneO. O.DaleoP.2005.
The relative importance of substratum characteristics and recruitment in determining the spatial distribution of the fiddler crab Uca uruguayensis Nobili.
J. Exp. Mar. Biol. Ecol.314: