A Laboratory Study of the Feeding Behavior of the Sand Fiddler Crab
Fudge, Julie A.
MetadataShow full item record
This study dealt with the response of Uca pugilator to a variety of food solutions and the relationship between its response, its environment and its semiterrestrial existence. U. pugilator exhibited a decided preference and a response threshold for serine and for glucose sugars not found in marine organisms which can be correlated with its natural diet. The sand fiddler crab also responded to living organisms and mixtures thereof at densities similar to those found in its feeding areas. Mixtures in general were more stimulatory than their individual components and suggest that U. pugilator has chemoreceptors which are responsive to a variety of substances,' and a range of thresholds which the crab would encounter in its natural foraging activities.