Topic
Uca pugilator
About: Uca pugilator is a research topic. Over the lifetime, 376 publications have been published within this topic receiving 12303 citations.
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TL;DR: Although both species responded appropriately to conspecific males and females, U. pugilator males responded to female-like counterspecifics stimuli with courtship display, while U.pugnax responded with agonistic display toward counter-species females.
19 citations
TL;DR: The results of these experiments suggest that the inhibitory action of colchicine on melanin granule aggregation in Uca pugilator is not due to disruption of microtubules.
19 citations
TL;DR: Estimates of the size of a population of sand fiddler crabs, Uca pugilator (Bosc), were made with the Lincoln Index and Jackson's "positive" and "negative" models in the mobile phase of the activity cycle, and by stratified sampling of the immobile phase.
Abstract: 1. Estimates of the size of a population of sand fiddler crabs, Uca pugilator (Bosc), were made with the Lincoln Index and Jackson's "positive" and "negative" models in the mobile phase of the activity cycle, and by stratified sampling of the immobile phase.2. Restricted random sampling was employed because of extremely contagious distribution of the crabs during the mobile phase and of desire to achieve better coverage of the burrowing area than unrestricted random sampling might have yielded during the immobile phase.3. During the mobile phase, the overall population was divided into four mobs, one separated from the rest by a physical, and the others from each other by a behavioral barrier. Only three out of 8967 marked individuals were recaptured outside their home territories. Some evidence suggesting that the mobs are derived from subpopulations occupying circumscribable burrowing areas was obtained.4. Appropriateness of the Lincoln Index was supported by immediate random dispersal of marked crabs a...
19 citations
TL;DR: In this article, a male Uca pugilator whose major cheliped was immersed in 3°C water bath experienced a significant drop in T b, which indicates that the enlarged claw of the claw may have an unexplored function: thermoregulation.
19 citations
TL;DR: Evidence was presented for the first time for the presence of a white pigment-dispersing substance in the sinus glands and central nervous system of the fiddler crab, Uca pugilator, from Panacea, Florida, when maintained in constant darkness.
Abstract: 1. Specimens of the fiddler crab, Uca pugilator, from Panacea, Florida, exhibited a daily rhythm of migration of their white chromatophoric pigment only when maintained in constant darkness. The pigment was more dispersed by day than at night. Crabs exposed to an incident illumination of 3.25 meter-candles on black and on white backgrounds showed no rhythm.2. The white pigment of these fiddler crabs exhibited a strong background adaptation. The pigment was well dispersed in crabs on a white background and maximally concentrated in those on a black background.3. At an incident light intensity of 3.25 meter-candles the white pigment of only 47% of the eyestalkless crabs was maximally dispersed. In 23% of the eyestalkless crabs it was in a maximally concentrated state. High intensities of illumination induced dispersion of the white pigment.4. Evidence was presented for the first time for the presence of a white pigment-dispersing substance in the sinus glands and central nervous system of Uca pugilator. The...
19 citations