Two New Brackish-Water Species of Macrostomum (Platyhelminthes: Macrostomorpha) from China and Their Phylogenetic Positions
Open Access
- 9 March 2021
- journal article
- research article
- Published by Zoological Society of Japan in Zoological Science
- Vol. 38 (3), 273-286
- https://doi.org/10.2108/zs200121
Abstract
In this paper, two new brackish-water species of the macrostomid turbellarian genus Macrostomum, Macrostomum pseudosinense sp. nov. and Macrostomum taurinum sp. nov., collected from coastal water at Shenzhen, Guangdong Province, China, are described based on morphological, histological, and molecular phylogenetic analyses. Macrostomum pseudosinense sp. nov. differs from similar species within the genus in the length of the stylet (152 +/- 15.0 mu m), diameter of stylet opening (20 +/- 4.0 mu m proximally; 7 +/- 0.5 mu m distally), two bends of the stylet, and the non-spiral end of the stylet. Macrostomum taurinum sp. nov. differs from its congeners in the length of the stylet (81 +/- 7.4 mu m), the stylet bending position and angle (50% and 60 degrees), diameter of stylet proximal opening (15 +/- 3.0 mu m), sperm with bristles and brush, and the smooth-walled ovaries. Phylogenetic analyses inferred from nuclear 18S and 28S rRNA genes support the establishments of these two new species. In addition, reciprocal mating behavior of M. pseudosinense sp. nov. was observed and documented.Keywords
This publication has 46 references indexed in Scilit:
- aLeaves facilitates on-demand exploration of metazoan gene family trees on MAFFT sequence alignment server with enhanced interactivityNucleic Acids Research, 2013
- MrBayes 3.2: Efficient Bayesian Phylogenetic Inference and Model Choice Across a Large Model SpaceSystematic Biology, 2012
- Mating behavior and the evolution of sperm designProceedings of the National Academy of Sciences of the United States of America, 2011
- Second-generation environmental sequencing unmasks marine metazoan biodiversityNature Communications, 2010
- Ultrasequencing of the meiofaunal biosphere: practice, pitfalls and promisesMolecular Ecology, 2010
- Regeneration in Macrostomum lignano (Platyhelminthes): cellular dynamics in the neoblast stem cell systemCell and tissue research, 2006
- Macrostomida (Platyhelminthes: Rhabditophora) from Argentina, with Descriptions of Two New Species of Macrostomum and of Stylet UltrastructureZoological Science, 2006
- The regeneration capacity of the flatworm Macrostomum lignano—on repeated regeneration, rejuvenation, and the minimal size needed for regenerationWilhelm Roux' Archiv für Entwicklungsmechanik der Organismen, 2006
- Further studies on the occurrence of freshwater Microturbellaria in the British IslesFreshwater Biology, 1972
- Monograph of the Macrostomine Worms of TurbellariaTransactions of the American Microscopical Society, 1954