Results 51 to 60 of about 2,599 (222)

Sisubiotus hakaiensis sp. nov. (Tardigrada, Macrobiotidae), a new tardigrade species from Calvert Island (British Columbia, Canada)

European Journal of Taxonomy, 2022
Tardigrades reports from British Columbia (Canada) trace back to 1908 and numerous species have been recorded from this region, despite the relatively few published sampling studies.
M. Vecchi, H. Choong, S. Calhim
semanticscholar   +1 more source

Novel distribution records of marine Tardigrada from abyssal sediments of the Northwest Atlantic Ocean

Organisms Diversity & Evolution
Four species of marine tardigrades were found in deep sea sediment samples of the Newfoundland Basin in the Northwest Atlantic Ocean. Samples were collected during expedition SO286 at more than 3000 m depth in an abyssal area that belongs to the intended
R. Trokhymchuk, A. Kieneke
semanticscholar   +1 more source

An integrative description of a new Richtersius species from Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Acta Zoologica Academiae Scientiarum Hungaricae, 2022
In this paper, we describe a new tardigrade species, Richtersius tertius sp. n., from Greece. The description is based on morphological and morphometric analysis using light and scanning electron microscopy as well as genetic analysis based on four ...
Justyna Pogwizd, D. Stec
semanticscholar   +1 more source

Variation in Meiofaunal Abundance and Composition Across an Estuarine Bay: Do They Comprise a Coherent and Distinct Entity Displaying Contrasting Patterns to the Macrofauna?

Ecology and Evolution, Volume 16, Issue 7, July 2026.
Is division of marine animals into macrofauna and meiofauna merely an arbitrary convenience, or, as has been claimed, does their size difference render them distinct and independent entities evolved under different ecological constraints? Those in the Knysna estuarine bay did not behave as distinct and discrete ecological entities, their individual ...
R. S. K. Barnes
wiley   +1 more source

Morphological support for the phylogenetic positioning of Pentastomida and related fossils [PDF]

Biotemas, 2008
Suporte morfológico para o posicionamento filogenético dos Pentastomida e fósseis relacionados. Pentastomida compreende um táxon de animais parasitas que infestam o trato respiratório de vertebrados.
Waltécio de Oliveira Almeida, Martin Lindsey Christoffersen, Dalton de Sousa Amorim, Elaine Christine Costa Eloy   +3 more
doaj   +2 more sources

Tips and tricks how to culture water bears: simple protocols for culturing eutardigrades (Tardigrada) under laboratory conditions

The European Zoological Journal, 2021
Tardigrades are microinvertebrates inhabiting almost all aquatic and terrestrial ecosystems throughout the world. They are known for their ability to enter into cryptobiosis and to survive extreme environmental conditions (e.g.
M. Roszkowska, D. Wojciechowska, H. Kmita, S. Cerbin, M. Dziuba, E. Fiałkowska, R. Sobkowiak, W. Szydło, Ł. Kaczmarek   +8 more
semanticscholar   +1 more source

Fossil freshwater fishes from the Pliocene of northern Colombia and the palaeogeography of northern South America

Papers in Palaeontology, Volume 12, Issue 4, July/August 2026.
Abstract Freshwater fishes from the northwestern Colombian Andes are reported from the Pliocene Sincelejo and Ware formations. A total of 10 taxa have been identified, involving two orders, five families and nine genera. Characters from dental morphology, fin spines and cranial bones are provided as taxonomic tools for the study of fossil fishes.
Gustavo A. Ballen, Camilo Montes, Jorge D. Carrillo‐Briceño, Sergio Bogan, Sandra Reinales, Mario C. C. de Pinna, Carlos Jaramillo   +6 more
wiley   +1 more source

At the Edge of Survival: Exploring the Frontiers of Tardigrade Extreme Stress Tolerance

Molecular Ecology, Volume 35, Issue 14, July 2026.
ABSTRACT Tardigrades possess extraordinary resilience to extreme environmental conditions, including near‐complete desiccation, severe levels of radiation, the vacuum of space and extreme sub‐zero temperatures. Despite significant interest in their survival strategies, the molecular mechanisms underlying their survival during extreme stresses have ...
Maria Kamilari, Frida Løkkegaard Pust, Andrea Marcantognini, Ask Møbjerg, Ricardo Cardoso Neves, Morten Schiøtt, Nadja Møbjerg   +6 more
wiley   +1 more source

Towards an inventory of Mexican tardigrades (Tardigrada): a survey on the diversity of moss tardigrades with an emphasis in conifer forests from the Valley of Mexico Basin

Check List
From a large-scale sampling of limnoterrestrial tardigrades in the Valley of Mexico Basin, in the Huasteca Potosina, and Monarch Butterfly Sanctuary, Mexico, we develop an initial species list and determine the type of vegetation and substrates for most ...
A. Dueñas-Cedillo, Ismael Venegas, Jazmín García-Román, Enrique Jurado, G. Cuéllar-Rodríguez, G. Villegas-Guzmán, C. F. Vargas-Mendoza, E. A. Ruíz, Francisco Armendáriz-Toledano   +8 more
semanticscholar   +1 more source

ParaHox Genes Revisited: From Gut Patterning to Integrated Axial and Neural Organization in Rotifera

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 346, Issue 4, Page 357-369, June 2026.
In rotifers, ParaHox genes show a dispersed genomic organization, with Xlox absent across gnathiferans. Exclusive neuronal expression of Gsx and Cdx reveals that ancestral ParaHox genes coordinated neural and epithelial development beyond gut patterning, suggesting an integrated role in early bilaterian body plan organization.
Andreas C. Fröbius, David B. Mark Welch, Holger Herlyn   +2 more
wiley   +1 more source