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Feeding Structures and their Functions in Adult and Preadult Tigriopus Californicus (Copepoda: Harpacticoida)

Published online by Cambridge University Press:  11 May 2009

A.G. Lewis ,
L. Chatters  and
M. Raudsepp
A.G. Lewis
Affiliation:
Department of Earth and Ocean Sciences, University of British Columbia, 6270University Boulevard, Vancouver, British Columbia, Canada, V6T 1Z4. Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, British Columbia, Canada, V6T 1Z4
L. Chatters
Affiliation:
Department of Earth and Ocean Sciences, University of British Columbia, 6270University Boulevard, Vancouver, British Columbia, Canada, V6T 1Z4. Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, British Columbia, Canada, V6T 1Z4
M. Raudsepp
Affiliation:
Department of Earth and Ocean Sciences, University of British Columbia, 6270University Boulevard, Vancouver, British Columbia, Canada, V6T 1Z4.
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Extract

Tigriopus californicus uses several appendages and processes in the collection and manipulation of food. Their structure and function appear to enable the species to utilize the variety of food materials found in splashpools, including: detritus and organic floes; superficial material on particles; faecal pellets; protists; diatoms; and small crustaceans. From light and scanning electron microscopy and video, the labrum and labium appear to be adapted for biting soft and hard food materials and holding food for trituration by the mandibles. From energy dispersive X-ray spectra, the gnathobase of the mandible is suggested to be sclerotized but not calcified or silicified. It has an array of bilobate and multilobate teeth, clusters of spinous processes, and a heavy, spine-bearing process to move food into the oesophagus. There is also a flange which articulates in a groove in the labrum which appears to provide a guide for the gnathobase as it moves vertically.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 78 , Issue 2 , May 1998 , pp. 451 - 466
Copyright
Copyright © Marine Biological Association of the United Kingdom 1998

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