Fiddler crabs
Fiddler Crabs (Uca pugilator) as Bioindicators of Environmental Health in Coastal Estuarine Communities of Beaufort, South Carolina
... mud fiddler crabs, Uca pugnax, are significantly larger in industrial polluted areas than crabs in a less polluted environment (Bergey and Weis ...2008). Crabs from these same polluted sites ...
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Spectral sensitivity of four species of fiddler crabs (Uca pugnax, Uca pugilator, Uca vomeris and Uca tangeri) measured by in situ microspectrophotometry
... these crabs’ spectral sensitivity, making the visual system in this genus relatively more sensitive to long ...the fiddler crabs’ social ...the crabs and habitat would enable us to evaluate if ...
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Fiddler crabs accurately measure two dimensional distance over three dimensional terrain
... Foraging fiddler crabs ( Uca ...most fiddler crabs inhabit relatively flat terrain, they must cope with vertical features of their environment, such as sloping beaches, mounds and shells, ...
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Retinal location is the key to identifying predators in fiddler crabs (Uca pugilator)
... flat-world crabs can be described as a ‘matched filter’ in the sense of Wehner ...many fiddler crabs live where there is no clear view of the horizon for ...
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Sampling Visual Space: Topography, colour vision and visually guided predator avoidance in fiddler crabs (Uca vomeris)
... the fiddler crab Uca vomeris experiences during its daily life on the ...the crabs’ compound eye and demonstrate how regional specialisations of optical and sampling resolution reflect the information ...
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The Effects of Fiddler Crabs (Uca sp) on C/N Ratio and Redox Potential of Soil in Mangrove Ecosystems
... the fiddler crab community stucture and to analyze the effects of fiddler crabs on C/N ratio and redox potential of soil in mangrove ...of fiddler crabs were taken during the low tides ...
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Burrow surveillance in fiddler crabs II The sensory cues
... the crabs can rely on disparity cues to determine a dummy’s distance for the following ...most fiddler crabs, Uca vomeris carry their eyes close together on long, vertical ...the crabs to ...
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Burrow surveillance in fiddler crabs I Description of behaviour
... real crabs, yet they were very successful in eliciting burrow ...of fiddler crab compound eyes. In the context of burrow defence, the crabs simply cannot afford to be ...claw, fiddler ...
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Sexual Differences in Foraging Behavior of Fiddler Crab, Uca sindensis (Decapoda: Ocypodidae)
... other fiddler crabs, have an enlarged feeding claw that is sexually selected for use in combat with other males and is waved to attract females for mating (Crane, ...other fiddler crab species in ...
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Signals from ‘crabworld’: cuticular reflections in a fiddler crab colony
... Fiddler crabs live in a highly structured visual world: they operate on the mudflat surface during low tide and carry their eyes on long vertical stalks, so that the local visual horizon becomes a reliable ...
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The variable colours of the fiddler crab Uca vomeris and their relation to background and predation
... in crabs and birds, we estimated the signals that these colours yield in the photoreceptors of crabs and birds and modeled chromatic and achromatic ...that fiddler crabs Uca tayerii possess ...
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The spectral and temporal properties of fiddler crab photoreceptors in the context of predator avoidance
... Fiddler crabs are small, semi-terrestrial crabs, with adults of, for example, the species Uca vomeris ranging from 15mm to 30mm across the ...
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PHARMACOLOGICALLY ACTIVE FATTY ACIDS OF FIDDLER CRAB Uca acuta acuta (Simpson)
... studied fiddler crabs, Uca acuta acuta were collected from the coastal belt of Purusattampur (Dadanpatrabar), Midnapur(East), West Bengal (Latitude 21°47′N and longitudes 87°45′E) ...
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Flicker is part of a multi cue response criterion in fiddler crab predator avoidance
... for fiddler crabs, because their main bird predators fly at a constant height and are therefore seen at increasing elevations as they approach (Hemmi and Zeil, ...the crabs may acquire even more ...
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Molecular evidence for color discrimination in the Atlantic sand fiddler crab, Uca pugilator
... 2008), crabs (Baldwin and Johnsen, 2009), stomatopods (Cheroske et ...using fiddler crabs (genus Uca) has provided several insights into the mechanisms of intraspecific visual signaling and ...
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GAS EXCHANGE THROUGH THE LUNGS AND GILLS IN AIR BREATHING CRABS
... for crabs with portal lungs compared with crabs ...ghost crabs are highly aerobic and have a high metabolic scope and fast recovery time (Full and Herreid, ...Interestingly, fiddler ...
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Ammonia excretion in aquatic and terrestrial crabs
... of the shore crab Carcinus maenas, however, RhCM would be co-localized with the H + -ATPase within the membranes of intracellular vesicles to support the proposed vesicular acid- trapping mechanisms. Also, a basolateral ...
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Reproductive success and factors affecting sexual selection in a fiddler crab, Uca mjoebergi
... banana fiddler crab, Uca mjoebergi (Rathbun, 1924), for example, lives on intertidal mudflats that reach 50°C even though their critical thermal limit is 40°C (Munguia et ...other fiddler crab species, even ...
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The predator and prey behaviors of crabs: from ecology to neural adaptations
... Crabs have two compound eyes located at the tip of movable eyestalks (Fig. 3A,B). The ommatidia are spherically distributed, except for a narrow band of cuticle on the medial side of the eyestalk. This band, ...
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Advances in the culture of crabs
... Moulting crabs are housed in compartmentalised systems, such as baskets in ponds or arrays of containers (Paterson et ...mud crabs in SE Asia currently requires freezing of packaged post-moults and our ...
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