Menu

Image of the Day: Tardigrade Eggs

The studded cells belong to a newly discovered species of water bear, Macrobiotus shonaicus. 

Mar 2, 2018
The Scientist Staff

Scanning electron micrograph of tardigrade (Macrobiotus shonaicus) eggs. A-B: entire eggs with flexible filaments on the egg processes; C-D: egg processes with filaments; E-F: close-up of a single egg process. All scale bars in micrometersSTEC ET AL.

Researchers announced the discovery of a new species of tardigrade in PLOS ONE on Wednesday (February 28). The animal is named Macrobiotus shonaicus for the Shōnai region in Japan where it was collected. Study coauthor Kazaharu Arakawa, a molecular biologist at Keio University, collected the critter in a clump of moss he scraped from the surface of his apartment complex’s parking lot.

The new species was added to the hufelandi group of tardigrades, which was previously represented by just one other species, M. hufelandi. Hufelandi tardigrades’ eggs have similar characteristics, notably, structures on their surface called egg processes. M. shonaicus has thin, flexible filaments on the ends of the egg processes that most likely enhance the egg’s adhesiveness.

D. Stec et al., “An integrative description of Macrobiotus shonaicus sp. nov. (Tardigrada: Macrobiotidae) from Japan with notes on its phylogenetic position within the hufelandi group,” PLOS ONE, doi:10.1371/journal.pone.0192210, 2018.

September 2018

The Muscle Issue

The dynamic tissue reveals its secrets

Marketplace

Sponsored Product Updates

Horizon Discovery introduces Myeloid DNA Reference Standard to support genetic testing of leukemia

Horizon Discovery introduces Myeloid DNA Reference Standard to support genetic testing of leukemia

Horizon Discovery Group plc, a global leader in gene editing and gene modulation technologies, today announced the launch of its Myeloid DNA Reference Standard. The first-to-market large cell-line derived myeloid cancer reference standard designed enables faster, more reliable and more cost-effective assay validation, to support the market in bringing routine testing into practice.

StemExpress LeukopakâNow Available in Frozen Format

StemExpress LeukopakâNow Available in Frozen Format

StemExpress, a Folsom, California based leading supplier of human biospecimens, announces the release of frozen Peripheral Blood Leukopaks. Leukopaks provide an enriched source of peripheral blood mononuclear cells (PBMCs) with low granulocyte and red blood cells that can be used in a variety of downstream cell-based applications.

New Antifade Mounting Media from Vector Laboratories Enhances Immunofluorescence Applications

New Antifade Mounting Media from Vector Laboratories Enhances Immunofluorescence Applications

Vector Laboratories, a leader in the development and manufacture of labeling and detection reagents for biomedical research, introduces VECTASHIELD® Vibrance™ – antifade mounting media that delivers significant improvements to the immunofluorescence workflow.

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Download this white paper from Bertin Technologies to learn how to extract and analyze lipid samples from various models!