Results 21 to 30 of about 5,499 (220)

Tun formation is not a prerequisite for desiccation tolerance in the marine tidal tardigrade Echiniscoides sigismundi [PDF]

open access: yes, 2016
The so-called ‘tun’ state is best known from limno-terrestrial tardigrades and rotifers that rely on this compact body shape for anhydrobiotic survival.
Clausen, Lykke K.B.   +4 more
core   +3 more sources

A new Megatheriinae skull (Xenarthra, Tardigrada) from the pliocene of northern venezuela – Implications for a giant sloth dispersal to central and North America [PDF]

open access: yes, 2018
A skull of a ground sloth from the Pliocene San Gregorio Formation documents a northern neotropical occurrence of a megatheriine that addresses issues on intraspecific variation and biogeography. The new specimen is broadly similar in size and morphology
Brandoni, Diego   +3 more
core   +2 more sources

Dimorphism in quaternary scelidotheriinae (mammalia, xenarthra, phyllophaga) [PDF]

open access: yes, 2015
The contributions concerning possible cases of sexual dimorphisms in fossil and living sloths are scarce. Until now, studies in fossil ground sloth sexual dimorphism have been limited to the subfamilies Megatheriinae (Eremotherium) and Mylodontinae ...
Miño Boilini, Ángel Ramón   +1 more
core   +1 more source

Experimental taxonomy exposes ontogenetic variability and elucidates the taxonomic value of claw configuration in Milnesium Doyère, 1840 (Tardigrada : Eutardigrada : Apochela) [PDF]

open access: yes, 2016
In this paper we describe a new apochelan species, Milnesium variefidum sp. nov. from Scotland and provide novel morphological and molecular data for Milnesium berladnicorum Ciobanu et al., 2014.
Blagden, Brian   +4 more
core   +2 more sources

Introduction to Zoology. T. H. Savory. New York: Philosophical Library, 1968. viii, 239 pp. $6.00. [PDF]

open access: yes, 2017
Excerpt: This book would delight the traditional zoologist as its emphasis is on systematics and evolution. primarily based on morphology. By the author\u27s own admission he neglects areas concerning histology, embryology, physiology and genetics, while
Nelson, Sigurd, Jr.
core   +3 more sources

Comparative genomics of the tardigrades Hypsibius dujardini and Ramazzottius varieornatus.

open access: yesPLoS Biology, 2017
Tardigrada, a phylum of meiofaunal organisms, have been at the center of discussions of the evolution of Metazoa, the biology of survival in extreme environments, and the role of horizontal gene transfer in animal evolution.
Yuki Yoshida   +11 more
doaj   +1 more source

Tardigrada of Ireland: a review of records and an updated checklist of species including a new addition to the Irish fauna

open access: yesZooKeys, 2016
The phylum Tardigrada was not recorded in Ireland until the Clare Island Survey of 1909–1911, with only rare subsequent reports on Irish tardigrade species. In recent decades, significant taxonomic revision has occurred within Tardigrada.
Erica DeMilio   +2 more
doaj   +3 more sources

Horizontal gene transfer in bdelloid rotifers is ancient, ongoing and more frequent in species from desiccating habitats. [PDF]

open access: yes, 2015
BACKGROUND: Although prevalent in prokaryotes, horizontal gene transfer (HGT) is rarer in multicellular eukaryotes. Bdelloid rotifers are microscopic animals that contain a higher proportion of horizontally transferred, non-metazoan genes in their ...
Barraclough, TG   +6 more
core   +8 more sources

Time-series transcriptomic screening of factors contributing to the cross-tolerance to UV radiation and anhydrobiosis in tardigrades

open access: yesBMC Genomics, 2022
Background Tardigrades are microscopic animals that are capable of tolerating extreme environments by entering a desiccated state of suspended animation known as anhydrobiosis.
Yuki Yoshida   +7 more
doaj   +1 more source

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