Results 11 to 20 of about 2,429 (200)

Molecular diversity of benthic ctenophores (Coeloplanidae) [PDF]

open access: yesScientific Reports, 2017
Coeloplanidae, the largest family of benthic ctenophores, comprises 33 species, all described based on traditional morphological characteristics, such as coloration, length, and number of aboral papillae, which are highly variable and can be affected by ...
Ada Alamaru   +3 more
doaj   +5 more sources

Evidence for de novo Biosynthesis of the Luminous Substrate Coelenterazine in Ctenophores

open access: yesiScience, 2020
Summary: Coelenterazine is a key substrate involved in marine bioluminescence which is used for light-production by at least nine phyla. Some luminous animals, such as the hydromedusa Aequorea, lack the ability to produce coelenterazine endogenously and ...
Manabu Bessho-Uehara   +5 more
doaj   +2 more sources

Nitric oxide signaling in ctenophores

open access: yesFrontiers in Neuroscience, 2023
Nitric oxide (NO) is one of the most ancient and versatile signal molecules across all domains of life. NO signaling might also play an essential role in the origin of animal organization.
Leonid L. Moroz   +3 more
doaj   +3 more sources

Ctenophores: an evolutionary-developmental perspective

open access: yesCurrent Opinion in Genetics & Development, 2016
Ctenophores are non-bilaterian metazoans of uncertain phylogenetic position, some recent studies placing them as sister-group to all other animals whereas others suggest this placement is artefactual and ctenophores are more closely allied with cnidarians and bilaterians, with which they share nerve cells, muscles and gut.
Jager, Muriel, Manuel, Michaël
openaire   +4 more sources

Discovery, prevalence, and persistence of novel circular single-stranded DNA viruses in the ctenophores Mnemiopsis leidyi and Beroe ovata

open access: yesFrontiers in Microbiology, 2015
Gelatinous zooplankton, such as ctenophores and jellyfish, are important components of marine and brackish ecosystems and play critical roles in aquatic biogeochemistry.
Mya eBreitbart   +14 more
doaj   +3 more sources

Occurrence of Isopenicillin-N-Synthase Homologs in Bioluminescent Ctenophores and Implications for Coelenterazine Biosynthesis. [PDF]

open access: yesPLoS ONE, 2015
The biosynthesis of the luciferin coelenterazine has remained a mystery for decades. While not all organisms that use coelenterazine appear to make it themselves, it is thought that ctenophores are a likely producer.
Warren R Francis   +4 more
doaj   +2 more sources

Seasonal succession of gelatinous zooplankton (medusae and ctenophores) from Mar del Plata Harbor, Argentina (SW Atlantic Ocean) [PDF]

open access: yesEcología Austral, 2019
Temporal variation of the population dynamics of the medusae and ctenophores (gelatinous zooplankton) is described over an annual cycle in the Mar del Plata Harbor, Argentina.
F. Alejandro Puente Tapia   +1 more
doaj   +2 more sources

Records of ctenophores from South Africa

open access: yesPeerJ, 2021
Although ctenophores can be conspicuous components of the plankton in coastal marine ecosystems, only six species have been formally described from around South Africa. Using photographs from local community scientists, we add a further three species ( Cestum veneris, Beroe forskalii ?,
Gibbons, Mark J.   +3 more
openaire   +4 more sources

Medusae, siphonophores and ctenophores of the Magellan Region

open access: yesScientia Marina, 1999
Medusae, siphonophores and ctenophores were conspicuous and relatively abundant organisms in the Magellan Straits, Beagle Channel and adjacent waters during the Victor Hensen campaign in 1994.
Francesc Pagès, Covadonga Orejas
doaj   +3 more sources

Interannual variation in the composition of the assemblages of medusae and ctenophores in St. Helena Bay, Southern Benguela Ecosystem

open access: yesScientia Marina, 2000
The assemblages of medusae and ctenophores were examined from samples collected each winter from St Helena Bay, over the 10-year period 1988-1997.
Emmanuelle Buecher, Mark John Gibbons
doaj   +3 more sources

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