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
Pagination381 - 386
Date Published12/1996

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.

Short TitleEcol. Res.