Results 21 to 30 of about 1,110 (204)

Tardigrades Research in Brazil: an overview and updated checklist [PDF]

open access: yesArquivos de Zoologia, 2020
Tardigrades are microscopic animals, commonly referred to as “water bears”, and comprise the phylum Tardigrada. They are found in diverse habitats in terrestrial, freshwater and marine environments worldwide.
Rodolfo Corrêa de Barros
doaj   +3 more sources

"Everything is not everywhere": Time-calibrated phylogeography of the genus Milnesium (Tardigrada). [PDF]

open access: yesMol Ecol, 2021
Abstract There is ample evidence that macroscopic animals form geographic clusters termed as zoogeographic realms, whereas distributions of species of microscopic animals are still poorly understood. The common view has been that micrometazoans, thanks to their putatively excellent dispersal abilities, are subject to the “Everything is everywhere but ...
Morek W   +3 more
europepmc   +2 more sources

Neotropical jewels in the moss: biodiversity, distribution and evolution of the genus Barbaria (Heterotardigrada: Echiniscidae) [PDF]

open access: green, 2022
The genus Barbaria, recently established to accommodate the former Echiniscus bigranulatus group, is a tardigrade group emblematic for the South American tardigrade fauna.
Piotr Gąsiorek   +3 more
openalex   +4 more sources

First records of marine tardigrades of the genus Coronarctus (Tardigrada, Heterotardigrada, Arthrotardigrada) from Mexico [PDF]

open access: yesCheck List, 2020
Deep-water sampling in the Perdido Fold Belt, Gulf of Mexico, Mexican Economic Exclusive Zone yielded five specimens of tardigrades belonging to the genus Coronarctus Renaud-Mornant, 1974. The specimens represent the first records of the genus for Mexico.
Wilbert Andrés Pérez-Pech   +6 more
doaj   +7 more sources

The spermatozoon of the Echiniscidae (Tardigrada, Heterotardigrada) and its phylogenetic significance

open access: greenZoomorphology, 2003
The spermatozoon ultrastructure of four species of moss-dwelling Heterotardigrada belonging to four genera of Echiniscidae, namely Pseudechiniscus juanitae, Echiniscus duboisi, Novechiniscus armadilloides and Antechiniscus parvisentus, was investigated. In all species, the testicular male gamete is similar in morphology and in length.
Lorena Rebecchi, Roberto Bertolani
exaly   +4 more sources

New Indomalayan Nebularmis species (Heterotardigrada: Echiniscidae) provoke a discussion on its intrageneric diversity [PDF]

open access: yesZoological Letters, 2021
Recent years have brought undeniable progress in tardigrade taxonomy, and speciose complexes were detected in a number of phylogenetic lineages. The family Echiniscidae is one such lineage; it is one of the most diverse groups of limno-terrestrial ...
Piotr Gąsiorek   +5 more
doaj   +2 more sources

Wolbachia in Antarctic terrestrial invertebrates: Absent or undiscovered? [PDF]

open access: yesEnviron Microbiol Rep
Endosymbiotic bacteria Wolbachia are recognized for their role in influencing host survival and stress resistance, particularly in cold environmental conditions across various species. However, our analysis of available data reveals a notable absence of Wolbachia in species abundant in the extreme cold conditions of Antarctica.
Serga S   +11 more
europepmc   +2 more sources

An overview of the sexual dimorphism in Echiniscus (Heterotardigrada, Echiniscoidea), with the description of Echiniscus masculinus sp. nov. (the virginicus complex) from Borneo [PDF]

open access: goldZoosystematics and Evolution, 2020
Members of the genus Echiniscus C.A.S. Schultze, 1840 are mostly unisexual, with thelytokously reproducing females. Therefore, every newly described dioecious species in the genus is particularly interesting.
Piotr Gąsiorek   +2 more
doaj   +4 more sources

Halechiniscidae (Heterotardigrada, Arthrotardigrada) of Oura Bay, Okinawajima, Ryukyu Islands, with descriptions of three new species [PDF]

open access: yesZooKeys, 2015
Marine tardigrades of the family Halechiniscidae (Heterotardigrada: Arthrotardigrada) are reported from Oura Bay, Okinawajima, one of the Ryukyu Islands, Japan, including Dipodarctus sp., Florarctus wunai sp. n., Halechiniscus churakaagii sp.
Shinta Fujimoto
doaj   +2 more sources

Two new species of Tardigrada from moss cushions (Grimmia sp.) in a xerothermic habitat in northeast Tennessee (USA, North America), with the first identification of males in the genus Viridiscus. [PDF]

open access: yesPeerJ, 2020
Background. The phylum Tardigrada consists of over 1,300 species that inhabit terrestrial, freshwater and marine environments throughout the world. In terrestrial habitats they live primarily in mosses, lichens, leaf litter and soil, whereas tardigrades
Nelson DR   +5 more
europepmc   +4 more sources

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