Dynamic cell fate plasticity and tissue integration drive functional synovial joint regeneration.

Adult mammalian synovial joints have limited regenerative capacity, where injuries heal with mechanically inferior fibrotic tissues. Here we developed a unilateral whole-joint resection model in adult zebrafish to advance our understanding of how to stimulate regrowth of native synovial joint tissues. Using a combination of microCT, histological, live imaging, and single-cell RNA sequencing (scRNAseq) approaches after complete removal of all joint tissues, we find de novo regeneration of articular cartilage, ligament, and synovium into a functional joint.

On the identity of Opopaea euphorbicola Strand, 1909 and first records of three other non-native goblin spiders from Ascension Island (Araneae: Oonopidae).

N/A.

On the identity of species of the huntsman spider genus Thelcticopis Karsch, 1884 (Araneae: Sparassidae: Sparianthinae) from India, Myanmar, Pakistan, and Sri Lanka.

The species of the genus Thelcticopis Karsch, 1884 from India, Myanmar, Pakistan, and Sri Lanka are reviewed. Stasina nalandica Karsch, 1892 and S. paripes (Karsch, 1879) are re-transferred to the genus Thelcticopis.

On Perry O. Simons' 1899 collecting locality "Porvenir" in Ecuador.

The locality of Porvenir, sensu the collecting locality of Perry O. Simons (1869-1901), is geolocated, and approximate coordinates are provided, along with a map showing a number of other important nearby sites also visited by Simons and referenced in the historical zoological literature. Discussion on the incongruent coordinates for this locality mentioned in a number of previous works is provided.