Nutritional diversity of symbiotic ascidians in a Fijian seagrass meadow

TitleNutritional diversity of symbiotic ascidians in a Fijian seagrass meadow
Publication TypeJournal Article
Year of Publication1996
Refereed DesignationRefereed
AuthorsKoike, I., & Suzuki T.
JournalEcological Research
Volume11
Issue3
Pagination381 - 386
Date Published12/1996
ISSN1440-1703
Abstract

In a coastal lagoon of Dravuni Island, Fiji, at least six species of compound ascidians, some of them harboringProchloron as symbiotic algae, were found in aSyringodium-dominated seagrass meadow. Based on their heterotrophic (filrer feeding rates) and autotrophic (photosynthetic) activities, carbon gain of the ascidians was categorized into two groups: (i) supported by heterotrophic metabolism; and (ii) supported by both heterotrophic and autotrophic metabolisms.Didemnum molle, Lissoclinum bistratum andLissolinum voeltzkowi belong to the latter group, and the relative contribution of the autotrophic process was a significant portion of their carbon gain (52–74%). These symbiotic ascidians were found in light microhabitats, while the heterotrophic species occupied shady environments rich in suspended organic materials, such as the sheath surface of the seagrass.

DOI10.1007/BF02347795
Short TitleEcol. Res.