We video recorded the surface activities (feeding, standing, in burrow, mating, walking, grooming, digging, fighting and waving) of 92 Uca rosea (Tweedie, 1937) fiddler crabs, with 56 crabs having burrows with chimneys (chimney owners (COs)) and 36 crabs having burrows without chimneys (burrow owners (BOs)), and examined the effects of sex and burrow/chimney ownership on time allocation for activities. All crabs spent more time on feeding than on other activities. Females spent more time on standing and staying inside burrows than males did, and males spent more time on grooming than females did. BOs spent more time on feeding and fighting than COs, and COs spent more time on grooming and waving than BOs did. Female BOs showed higher feeding rates than female COs, but feeding rates did not differ between male BOs and COs. Thus, sex and burrow/chimney ownership affect time allocation for activities in U. rosea.
Trade-off between brood size and brood interval and the evolution of underground incubation in three fiddler crabs (Uca perplexa, U. vocans, and U. dussumieri).
J. Crust. Biol.,
MacIntoshD. J., 1978. Predation of fiddler crabs (Uca spp.) in estuarine mangroves. In: P. B. L. Srivastaba (ed.), Proceedings of the symposium on mangrove and estuarine vegetation in south east Asia, 25th-28th April, 1978. Serdang, Selangor, Malaysia. Biotrop. Spec. Publ. Ser., 10: 101-110.
MilnerR. N. C.JennionsM. D.BackwellP. R. Y., 2012.
Keeping up appearances: male fiddler crabs wave faster in a crowd.
Study on the behaviour of two fiddler crabs, Uca sindensis and Uca annulipes (Decapoda: Ocypodidae), in Bandar Abbas, Iran.
J. Mar. Biol. Ass. U. K.,
ShihH. T.MokH. K.ChangH. W., 2005.
Chimney building by male Uca formosensis Rathbun, 1921 (Crustacea: Decapoda: Ocypodidae) after pairing: a new hypothesis for chimney function.
TinaF. W.JaroensutasineeM.JaroensutasineeK., 2016b.
A note on behavioural and morphological compensations of male Uca vocans (Linnaeus, 1758) relative to females, for the loss of one functional feeding claw.
TinaF. W.JaroensutasineeM.JaroensutasineeK.KanittaK., 2017 (cf. b).
Female reproductive status affecting chimney characteristics and time allocation for surface activities in Uca rosea (Tweedie, 1937) (Brachyura, Ocypodidae).