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Morphology, phylogeny and novel chemical compounds from Coolia malayensis (Dinophyceae) from Okinawa, Japan
The five compounds in the C. malayensis from Okinawa are composed of less oxygen, compared to cooliatoxin and other analogs of yessotoxin, suggesting the metabolites produced by C.malayensis are unique to those previously reported from other strains of Coolia.
Molecular Phylogeny of Marine Gregarine Parasites (Apicomplexa) from Tube‐forming Polychaetes (Sabellariidae, Cirratulidae, and Serpulidae), Including Descriptions of Two New Species of Selenidium
A species discovery survey of Selenidium from tube‐forming polychaetes uncovered five different morphotypes of trophozoites (feeding stages) living within the intestines of three different polychaete hosts, two of which were established in this study.
Molecular Phylogeny of Pacific Archigregarines (Apicomplexa), Including Descriptions of Veloxidium leptosynaptae n. gen., n. sp., from the Sea Cucumber Leptosynapta clarki (Echinodermata), and Two…
This work describes two novel species of Selenidium and describes a novel genus of archigregarine, Veloxidium leptosynaptae n.
Comparative ultrastructure and molecular phylogeny of Selenidium melongena n. sp. and S. terebellae Ray 1930 demonstrate niche partitioning in marine gregarine parasites (apicomplexa).
Molecular phylogenetic analyses of small subunit rDNA sequences derived from single-cell PCR unexpectedly demonstrated that these two gregarines are close sister species, demonstrating a compelling case of niche partitioning and associated morphological divergence in marine gregarine apicomplexans.
Identity of environmental DNA sequences using descriptions of four novel marine gregarine parasites, Polyplicarium n. gen. (Apicomplexa), from capitellid polychaetes
The utility of SC-PCR approaches for distinguishing between different gregarine species is illustrated, the cellular identity of a previously unidentified environmental SSU rDNA sequence clade is demonstrated, and four new species are established within one novel genus.
Microbial arms race: Ballistic “nematocysts” in dinoflagellates represent a new extreme in organelle complexity
The diversity of traits in dinoflagellate nematocysts demonstrates a stepwise route by which simple secretory structures diversified to yield elaborate subcellular weaponry.
Validation of a universal set of primers to study animal-associated microeukaryotic communities.
- J. del Campo, M. J. Pons, +5 authors P. Keeling
- Medicine, BiologyEnvironmental microbiology
- 1 October 2019
In silico validation against the SILVA 18S rRNA database of a non-metazoan primer set (primers that are biased against the metazoan 18 S rRNA) that recovers only 2.6% of all the metAZoan sequences while recovering most of the other eukaryotes, this easy, inexpensive, and near-universal method for the study of animal-associated microeukaryote diversity will contribute to a better understanding of the microbiome.
Discovery of a Diverse Clade of Gregarine Apicomplexans (Apicomplexa: Eugregarinorida) from Pacific Eunicid and Onuphid Polychaetes, Including Descriptions of Paralecudina n. gen., Trichotokara…
- S. Rueckert, K. Wakeman, B. Leander
- Medicine, BiologyThe Journal of eukaryotic microbiology
- 1 March 2013
Improved morphological and molecular phylogenetic context justified the establishment of Paralecudina polymorpha, a sister clade to the Trichotokara clade that possesses densely packed epicyctic folds and a prominently elongated mucron.
Molecular Phylogeny of Marine Gregarines (Apicomplexa) from the Sea of Japan and the Northwest Pacific Including the Description of Three Novel Species of Selenidium and Trollidium akkeshiense n.…
- K. Wakeman
- Biology, MedicineProtist
- 7 December 2019
Species discovery and evolutionary history of marine gregarine apicomplexans
- K. Wakeman
This work uncovered and identified an ambiguous environmental sequence clade and was able to show that SSU rDNA can be reliably isolated from single cells as a method for delimiting closely related or morphologically similar species.