Results 11 to 20 of about 21,539 (261)
A shore-based preliminary survey of marine ribbon worms (Nemertea) from the Caribbean coast of Colombia [PDF]
ZooKeys, 2014 A checklist of benthic ribbon worm species from the Caribbean coast of Colombia is presented, including synonyms, distributions, a photographic record, and the main morphologic characters of each species for a rapid identification.
Jaime Gonzalez +2 more
doaj +4 more sources
Evolution, Expression Patterns, and Distribution of Novel Ribbon Worm Predatory and Defensive Toxins. [PDF]
Mol Biol Evol, 2022 Abstract Ribbon worms are active predators that use an eversible proboscis to inject venom into their prey and defend themselves with toxic epidermal secretions. Previous work on nemertean venom has largely focused on just a few species and has not investigated the different predatory and defensive secretions in detail. Consequently, our
Verdes A +9 more
europepmc +6 more sources
Genome Size Dynamics in Marine Ribbon Worms (Nemertea, Spiralia) [PDF]
Genes, 2021 Nemertea is a phylum consisting of 1300 mostly marine species. Nemertea is distinguished by an eversible muscular proboscis, and most of the species are venomous. Genomic resources for this phylum are scarce despite their value in understanding biodiversity.
Paule, Juraj +3 more
openaire +2 more sources
Ribbon worm relationships: a phylogeny of the phylum Nemertea. [PDF]
Proc Biol Sci, 2003 We present the most extensive phylogenetic analysis to date, to our knowledge, of higher-level nemertean relationships, based on sequence data from four different genes (the nuclear genes for nuclear large subunit rRNA (28S rRNA) and histone H3 (H3), and the mitochondrial genes for mitochondrial large subunit rRNA (16S rRNA) and cytochrome c oxidase ...
Thollesson M, Norenburg JL.
europepmc +4 more sources
Frontiers in Marine Science, 2022 Nemerteans, or ribbon worms, have been reported from intertidal to hadal depths, often showing bathymetrically wide distribution in genus levels. Although current nemertean systematics practices require to provide DNA sequences and infer phylogenetic ...
Natsumi Hookabe +12 more
doaj +1 more source
The First Data on the Complete Genome of a Tetrodotoxin-Producing Bacterium
Toxins, 2021 Tetrodotoxin (TTX)-producing bacteria have attracted great interest as a model system for study of the TTX biosynthetic route. Here, we report the complete genome of the TTX-producing bacterium Bacillus sp. 1839.
Daria I. Melnikova +2 more
doaj +1 more source
Seven new species of Tetranemertes Chernyshev, 1992 (Monostilifera, Hoplonemertea, Nemertea) from the Caribbean Sea, western Pacific, and Arabian Sea, and revision of the genus [PDF]
ZooKeys, 2023 The marine ribbon worm genus Tetranemertes Chernyshev, 1992 currently includes three species: the type species T. antonina (Quatrefages, 1846) from the Mediterranean Sea, T. rubrolineata (Kirsteuer, 1965) from Madagascar, and T.
Irina Cherneva +6 more
doaj +3 more sources
Pseudocnidae of ribbon worms (Nemertea): ultrastructure, maturation, and functional morphology
PeerJ, 2021 The fine structure of mature pseudocnidae of 32 species of nemerteans, representatives of 20 genera, six families, and two classes was investigated with scanning and transmission electron microscopy. Pseudocnidae are composed of four layers (cortex, medulla, precore layer, and core) in most species investigated, but the degree of ...
Timur Yu Magarlamov +2 more
openaire +3 more sources
Marine Drugs, 2021 Tetrodotoxin (TTX) is a potent neurotoxin found in many marine and terrestrial animals, but only a few species, such as the ribbon worms of the genus Cephalothrix, accumulate it in extremely high concentrations.
Grigorii V. Malykin +2 more
doaj +1 more source
Mitochondrial DNA. Part B. Resources, 2020 Here, we report the complete mitochondrial genome of the marine nemertean Cephalothrix species collected from the coastal region of South Korea. The mitochondrial genome of Cephalothrix sp.
Sang-Eun Nam, Jae-Sung Rhee
doaj +1 more source