TitleFirst evidence of maternal transmission of algal endosymbionts at an oocyte stage in a triploblastic host, with observations on reproduction in Waminoa brickneri (Acoelomorpha)
Publication TypeJournal Article
Year of Publication2007
AuthorsBarneah, O, Brickner, I, Hooge, M, Weis, VM, Benayahu, Y
JournalInvertebrate Biology
Volume126
Pagination113-119
Type of ArticleJournal Article
ISSN1077-8306
Abstract

Examination of sexual reproduction in a symbiotic acoelomorph worm, Waminoa brickneri from Eilat (Red Sea), presents the first definitive evidence for maternal transmission of dinoflagellate algal symbionts in a triploblastic organism. Sexually mature worms were removed from the stony coral Plesiastrea laxa and raised in the laboratory. Eggs were detected 18 d after the collection of the worms and hatched 4 d later. Histological sections performed on sexually mature worms showed an ovary with oocytes containing two distinct types of algal endosymbionts within their ooplasm. Transmission electron microscopy corroborated the presence of algal symbionts within the developing embryos. Our findings regarding maternal transmission of symbionts shed new light on the diversity of modes of algal symbiont acquisition known in triploblastic organisms.

URL<Go to ISI>://WOS:000248912400002
DOI10.1111/j.1744-7410.2007.00082.x