Results 31 to 40 of about 12,958 (221)

Computational analysis of spliced leader trans-splicing in the regenerative flatworm Macrostomum lignano reveals its prevalence in conserved and stem cell related genes

open access: yesВавиловский журнал генетики и селекции, 2021
In eukaryotes, trans-splicing is a process of nuclear pre-mRNA maturation where two different RNA molecules are joined together by the spliceosomal machinery utilizing mechanisms similar to cis-splicing.
K. V. Ustyantsev, E. V. Berezikov
doaj   +1 more source

Fractionation of a sex-inducing substance from flatworms using open-column chromatography and reverse-phase high-performance liquid chromatography

open access: yesSTAR Protocols, 2023
Summary: A substance that sexualizes planarians, an ancestral group of parasitic flatworms, is widely present in planarians and parasitic flatworms. Here, we present a protocol for extracting and purifying the active fraction with sex-inducing activity ...
Kiyono Sekii   +6 more
doaj   +1 more source

Fossil constraints on the origin and evolution of Platyhelminthes are surprisingly concordant with modern molecular phylogenies [PDF]

open access: yesZoologia (Curitiba)
Trace fossils preserved with fossil worm-shaped remains suggest the presence of free-living flatworms during the Ordovician at the latest and their occurrence in terrestrial environments during the Permian.
Kenneth De Baets   +7 more
doaj   +1 more source

A new substrate for sampling deep river macroinvertebrates [PDF]

open access: yes, 2009
We compared macroinvertebrate communities colonising multiplate samplers constructed from perspex or tempered hardboard (wood) with an alternative artificial substrate constructed from folded coconut fibre matting (coir) enclosed in nylon netting ...
Chadderton, W. Lindsay   +2 more
core   +2 more sources

Systematic revision of the family Pleioplanidae Faubel, 1983 (Polycladida, Acotylea): new genus and combinations

open access: yesEuropean Journal of Taxonomy, 2017
New morphological information, reconsiderations and the first combination of a generic name based on a previously established species are presented in the current revision of the family Pleioplanidae (Polycladida, Acotylea).
Jorge Rodríguez   +5 more
doaj   +1 more source

Shape mode analysis exposes movement patterns in biology: flagella and flatworms as case studies

open access: yes, 2014
We illustrate shape mode analysis as a simple, yet powerful technique to concisely describe complex biological shapes and their dynamics. We characterize undulatory bending waves of beating flagella and reconstruct a limit cycle of flagellar oscillations,
Friedrich, Benjamin M.   +3 more
core   +3 more sources

Use of freeze-cracking in ontogenetic research in Macrostomum lignano (Macrostomida, Rhabditophora) [PDF]

open access: yes, 2009
A method for studying whole mount flatworm embryos based on freeze-cracking of the eggs is described. This method allows successful immunohistological and immunocytological studies of whole mount embryos.
Artois, Tom   +6 more
core   +1 more source

Food webs in forest and pasture streams in the Waikato region, New Zealand: A study based on analyses of stable isotopes of carbon and nitrogen, and fish gut contents. [PDF]

open access: yes, 1997
Stable isotopes of carbon (C) and nitrogen (N) were studied in 11 stream communities in the Waikato region of New Zealand. From comparisons of mean d13C and d15N values, food webs in the shaded, forest streams were clearly based on allochthonous material
Biggs B., Lester P. J., Main M. L.
core   +2 more sources

Transcriptional signatures of somatic neoblasts and germline cells in Macrostomum lignano

open access: yeseLife, 2016
The regeneration-capable flatworm Macrostomum lignano is a powerful model organism to study the biology of stem cells in vivo. As a flatworm amenable to transgenesis, it complements the historically used planarian flatworm models, such as Schmidtea ...
Magda Grudniewska   +9 more
doaj   +1 more source

A World of Viruses Nested within Parasites: Unraveling Viral Diversity within Parasitic Flatworms (Platyhelminthes)

open access: yesMicrobiology Spectrum, 2022
Because parasites have an inextricable relationship with their host, they have the potential to serve as viral reservoirs or facilitate virus host shifts.
Nolwenn M. Dheilly   +3 more
doaj   +1 more source

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