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Displacement Activities in Fiddler Crabs
Nature, 1955ACCORDING to Tinbergen1, a “displacement activity is an activity belonging to the executive motor pattern of an instinct other than the instinct (s) activated”, and, according to Bastock, Morris and Moynihan2, such activities would seem to take place in two quite different situations: “(1) Displacement activities may be performed by an animal in which ...
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Synchronized courtship in fiddler crabs
Nature, 1998The apparent paradox posed by the synchronization of mating displays by males competing to attract females has provoked considerable interest among evolutionary biologists1,3. Such synchronized sexual signalling has only been documented for communicationusing light flashes (bioluminescence) or sound.
Backwell, Patricia R. Y. +3 more
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Assortative mating in a fiddler crab
Behaviour, 2016Non-random mating, particularly positive size-assortative mating, is common and can have major evolutionary consequences. The causes of size-assortative mating, however, are rarely examined. Here we explore the possibility of sexual selection, mate availability and mating constraints causing the strong correlation between male and female sizes in the ...
H.L. Clark, P.R.Y. Backwell
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The Development of Asymmetry in the Fiddler Crab
The American Naturalist, 1923THE experiments of Przibram ('01, '07, '17) and of others have shown in certain species of decapod crustaceans, in which a larger and a smaller "claw" are normally present, that after the removal of the large claw the smaller claw develops into a large claw.
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A survey of the fine structure of the integument of the fiddler crab
Tissue and Cell, 1972Abstract The epidermis-exoskeleton complex in the fiddler crab is an organ consisting of cellular elements and a secreted cuticle. The epidermis is composed of a basement membrane, pigment cells, intraepidermal connective tissue and cuticled secreting cells. The latter two tissues undergo a morphologic cycle of decline and recrudescence correlated to
J P, Green, M R, Neff
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Accumulation of sediment-bound PCBs by fiddler crabs
Bulletin of Environmental Contamination and Toxicology, 1986The primary objective of this research was to characterize rates of PCB uptake and depuration by fiddler crabs in a simulated spoil bank habitat that contained PCBs in weathered sediment. Also, the authors examined whether the concentration of PCBs in substrates affected bioaccumulation by mixing PCB-laden sediments with clean sand.
J R, Clark +3 more
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Acoustic Interneurons of Fiddler and Ghost Crabs
Physiological Zoology, 1976The properties of acoustic interneurons in fiddler (Uca pugilator and U. minax) and ghost (Ocypode quadrata) crabs are described, as revealed by tests with pure tones. Three types of interneurons were present in all species: tonic, which fired for the duration of the stimulus; phasic, which fired briefly at the onset of stimulation; and inhibited, in ...
Michael Salmon, Kenneth Horch
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