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Showing 1 to 15 of 15 for “"Fiddler crabs"”.
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Correlating Behavior and Physiology of Sand Fiddler Crabs, UCA Pugilator
… internal energy stores, and behavior in the sand fiddler crab,Uca pugilator. Energy stores were quantified through determination of the condition of the hepatopancreas, an internal organ in crustaceans that houses nutrients used in growth and reproduction.</p> <p>In the first study, energy stores …
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Physiological and Behavioral Studies of Color Vision in Fiddler Crabs (Brachyura, Ocypodidae, Genus Uca)
Made available in DSpace on 2014-12-12T01:27:44Z (GMT). No. of bitstreams: 1 7405600.pdf: 3056319 bytes, checksum: 8a4e7e22f315901387e2c24c56f5c971 (MD5) Previous issue date: 1973
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Neuroanatomical and Neurophysiological Aspects of Vibrational Processing in the Central Nervous System of Semi-Terrestrial Crabs
Fiddler crabs (Uca) use substrate-borne vibrational signals during social interactions. The aims of this study were to determine (1) the central representation of vibrational stimuli in fiddler crabs, and (2) the generality of these findings as they relate to analogous systems in other arthropods.
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Density, Shell Use and Species Composition of Juvenile Fiddler Crabs (Uca Spp.) at Low and High Impact Salt Marshes on Georgia Barrier Islands
… are no studies that show what affect this has on fiddler crabs (Uca spp.), a key species in salt marsh habitats. The present study looks at how human impacts are affecting juvenile fiddler crab densities, shell use, and species compositions. This study was conducted at 3 low and 3 high impact …
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Spatial, temporal and spectral properties of photoreceptor cells in the fiddler crab Uca pugilator (Bosc, 1802)
Uca pugilator are semi-terrestrial brachyuran fiddler crabs that inhabit inter-tidal sand and mud flats. They are social animals that rely exclusively on visual information during several of their behaviors that include mate choice, predator avoidance, burrow surveillance, courtship and territorial …
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Exploring the Interface Between Macroorganisms and Microorganisms: Biochemical, Ecological, and Evolutionary Contexts
… secretions are explored for barnacles, fiddler crabs and blue crabs. Fluids of interest were secretions released during barnacle settlement and metamorphosis and those collected from living adult barnacles, fluids on fiddler crab sensory appendages including dactyl washings and buccal …
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Symbiotic Associations and Pathogenic Potential of Vibrios In the North Inlet Estuary
… by mud flats and infaunal burrows of the fiddler crabs Uca pugnax (Bosc) and Uca pugilator (Smith); the feeding and burrowing actions of which, serve to ventilate and redistribute the marsh sediment. Bacteria belonging to the genus Vibrio are flagellated gram negative rods or curved rods …
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Burrowing Behavior of the Fiddler Crab <i>Uca panacea</i> in Relation to Food Availability
<p>Much of fiddler crab behavior is regulated by the tides and centers around their burrows. Field and laboratory studies were conducted to assess the effect of food availability on burrowing in the Gulf coast fiddler crab, Vea panacea. In the field, crabs were observed for droving behavior through …
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Impacts of Microenvironment On Distributions and Activities of Bacteria In A Salt Marsh Environment
… ecosystem. Infaunal burrows produced by the fiddler crabs Uca pugilator and Uca pugnax are abundant features of southeastern United States salt marshes. These water-filled burrows become significantly enriched in Vibrionaceae, and specifically Vibrio parahaemolyticus (4875 CFU mL-1), relative …
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A Behavioral and Ecological Study of the Fiddler Crab UCA CRENULATA
… and behavioral activities of a population of fiddler crabs, Uca crenulatat located in the "Aqua Hedianda" lagoon in Carlsbad, California, is the subject of this study.</p> <p>Variations in environmental factors as well as seasonal behavioral changes cause an important fluctuation in the male …
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Molecular Population Genetics of the Atlantic Sand Fiddler Crab, Uca Pugilator, Along the Atlantic Coast
<p>Author's abstract: The Atlantic sand fiddler crab, Uca pugilator, is an extremely abundant fiddler crab found along the eastern and Gulf coast of the United States. Fiddler crabs have a life cycle with an obligatory planktonic larval phase of 30-90 days, which might be expected to lead to …
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Optimization of Culture Conditions for in Vitro Fertilization of the Microphallid Trematodes Gynaecotyla Adunca and Microphallus Turgidus
… were obtained from the green glands of fiddler crabs, <em>Uca pugnax</em>, excysted in 0.5% trypsin, washed and incubated in HBSS. Excysted worms were examined microscopically to determine sperm maturation time. The effect of different culture vessels and worm density on fertilization …
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Ownership conflicts and their resolution
… to a threshold determined by its own RHP, in fiddler crabs, Uca mjoebergi, I show that duration of contests increases with increasing size of the loser, and decreases, but to a lesser extent, with increasing size of the winter, suggesting that neither the mutual assessment or individual …
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Gut-associated microbial symbionts of the marsh fiddler crab, Uca pugnax
… of their interactions with their host, the marsh fiddler crab, Uca pugnax. Furthermore, we assessed whether microbes benefit the host by contributing extracellular enzymes along the digestive tract. This is the first report of the eccrinid protists, Enteromyces callanassae and Enterobryus sp., …
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Comparison of Invasive and Non-Invasive Techniques for Measuring Fiddler Crab Density in a Salt Marsh
Quantifying the density of burrowing crabs is challenging, and several techniques have been developed to accomplish it, including burrow counting, visual surveys of surface-active crabs, and substrate excavation. These techniques have been compared in mangrove forests but not in a salt marsh, nor …