Document Detail

Transfer of prokaryotic algal symbionts from a tropical ascidian (Lissoclinum punctatum) colony to its larvae.
MedLine Citation:
PMID:  20235396     Owner:  NLM     Status:  MEDLINE    
Lissoclinum punctatum is a colonial ascidian that harbors the symbiotic prokaryotic alga Prochloron in its tunic and in the peribranchial and common cloacal cavities. Most symbiotic cells in the tunic are intracellular (tunic phycocytes), while those in the cavities are extracellular. We found that neither gametes nor embryos brooded in the tunic were associated with photosymbionts. We determined that algal cells attach to posterior parts of the trunk of hatching larvae swimming in the common cloacal cavity. No symbiont cells were found intracellularly in larval tissues. Thus, extracellular Prochloron cells in the cloacal cavities were transferred to the larvae, but intracellular photosymbionts in the tunic were not. The intracellular symbiosis must be reestablished in each generation after larval settlement.
Aoi Kojima; Euichi Hirose
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Zoological science     Volume:  27     ISSN:  0289-0003     ISO Abbreviation:  Zool. Sci.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-03-17     Completed Date:  2010-05-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8702287     Medline TA:  Zoolog Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  124-7     Citation Subset:  IM    
Faculty of Science, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa 903-0213, Japan.
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MeSH Terms
Larva / physiology,  ultrastructure
Prochloron / physiology*
Urochordata / physiology*,  ultrastructure

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