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Elucidation of intragenomic variation of ribosomal DNA sequences in the enigmatic fungal genus Ceraceosorus, including a newly described species Ceraceosorus americanus.
IMA Fungus
December 2024
Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, USA.
Multicopy nuclear ribosomal DNA (rDNA) genes have been used as markers for fungal identification for three decades. The rDNA sequences in a genome are thought to be homogeneous due to concerted evolution. However, intragenomic variation of rDNA sequences has recently been observed in many fungi, which may make fungal identification and species abundance estimation based on these loci problematic.
View Article and Find Full Text PDFNovel lineage of anelloviruses with large genomes identified in dolphins.
J Virol
December 2024
The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine, School of Life Sciences, Arizona State University, Tempe, Arizona, USA.
Unlabelled: Anellovirus infections are ubiquitous in mammals but lack any clear disease association, suggesting a commensal virus-host relationship. Although anelloviruses have been identified in numerous mammalian hosts, their presence in members of the family Delphinidae has yet to be reported. Here, using a metagenomic approach, we characterize complete anellovirus genomes ( = 69) from four Delphinidae host species: short-finned pilot whale (, = 19), killer whale (, = 9), false killer whale (, = 6), and pantropical spotted dolphin (, = 1).
View Article and Find Full Text PDFA new species of the spider genus Mexentypesa Raven (Araneae: Nemesiidae) from Hidalgo, Mexico and taxonomic comments on M. chiapas Raven.
Zootaxa
May 2024
Laboratorio de Sistemática Animal; Centro de Investigaciones Biológicas; Universidad Autónoma del Estado de Hidalgo. Carretera Pachuca-Tulancingo km 4.5; Mineral de la Reforma; C.P. 42184; Hidalgo; Mexico.
Article Synopsis
- A new species of spider called M. hidalguensis has been discovered in a cloud forest in Hidalgo state, Mexico, adding to the diversity of the genus Mexentypesa.
- This new species is described based on both male and female adult specimens.
- The previous spider species Aptostichus sabinae is reclassified as a synonym of M. chiapas, standardizing the classification in this genus.
Redescription of the deep-sea benthic ctenophore genus Tjalfiella from the North Atlantic (Class Tentaculata, Order Platyctenida, Family Tjalfiellidae).
Zootaxa
July 2024
National Museum of Natural History; Smithsonian Institution; Department of Invertebrate Zoology; Washington; DC; 20560 USA; NOAA Fisheries; Office of Science & Technology; National Systematics Laboratory; Washington; DC; 20560 USA.
Article Synopsis
- Comb jellies, or ctenophores, are intriguing but not well-known marine animals, with a significant portion found in shallow waters, especially the benthic species from the order Platyctenida.
- This study focuses on the genus Tjalfiella, previously only identified from deep waters of Greenland, utilizing advanced imaging techniques on old museum specimens and new genetic data from recent deep-sea explorations.
- Although the research indicates that newly gathered specimens are closely related to existing species, definitive species differentiation is challenging due to minimal morphological differences, highlighting the complexities of understanding deep-sea biodiversity.
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