Turbellarian taxonomic database

Record # 20359
Author
Title
Journal
Ladurner P, Schärer L, Salvenmoser W, Rieger RM (2005)
A new model organism among the lower Bilateria and the use of digital microscopy in taxonomy of meiobenthic Platyhelminthes: Macrostomum lignano,n.sp. (Rhabditophora, Macrostomorpha).
J Zool Syst Evol Res 43:114-126

Abstract / Notes

Macrostomum lignano n. sp. is a member of the Macrostomorpha, the basal-most subtaxon of the
Platyhelminthes-Rhabditophora. This new species can be easily cultured in the laboratory and has been already
the subject of several developmental/evolutionary studies. The small size, with only about 25 000 cells
constituting the major bilaterian organ systems, makes this simultaneous hermaphrodite a possible candidate
for a new model organism that is phylogenetically more basal than any of the model organisms currently used
in such studies within the Bilateria. M. lignano belongs to the largest genus of the Macrostomorpha. Over 100
marine, fresh water and brackish water species are contained in the genus Macrostomum, some of them with
worldwide distribution pattern. Within it, M. lignano is a member of the M. tuba-species group, which we have
summarized here. In the species description, we have used a novel approach to document such small soft-bodied
meiobenthic organisms: we provide extensive digital micrographical documentation, which are deposited as a CD
together with the type material.

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