Feeding by an Expatriate Population of Sagitta Enflata
Abstract:The gut contents of Sagitta enflata collected near the Chesapeake Bay Light Tower were analyzed with respect to number, diet, time of day, depth and prey density. The results were compared to those of an earlier study of this species in the Gulf Stream near Miami, Florida. Feeding in this expatriate population was at half the rate of the sub-tropical population. The diet was dominated by copepods. Feeding rate was independent of the time of day and those chaetognaths feeding nearest the surface were the most active feeders. Feeding was also independent of prey density. Only 5% of the S. enflata were caught below the thermocline. These were apparently dying organisms.
Document Type: Research Article
Publication date: March 1, 1984
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