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Title: Photoreception in the purple sea urchin Strongylocentrotus purpuratus : insights into opsin evolution
Author: Herrera, Enrique Arboleda
ISNI:       0000 0001 3555 0879
Awarding Body: Open University
Current Institution: Open University
Date of Award: 2008
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The present thesis reports my study of photoreception in the purple sea urchin Strongylocentrotus purpuratus using molecular biology techniques through the identification and analyses of expression of opsin genes in larval forms and adult tissues and appendages. The S. purpuratus genome contains six bona fide opsin genes, including one rhabdomeric, one ciliary and two Go-type opsins that can be assigned to ancient bilaterian opsin subfamilies. Opsins are differentially expressed in larvae and adults as tected by qPCR, in Situ hybridization and immunohistochemical essays. However, no photoreceptor organ or group of cells forming one was identified. Patterns of expression around the arms, esophagus and oral hood areas in larval forms are discussed. The role of opsins in physiological activities other than the detection of the direction of incoming light is discussed.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available