Results 21 to 30 of about 18,813 (226)

Development and myogenesis of the vermiform Buddenbrockia (Myxozoa) and implications for cnidarian body plan evolution [PDF]

open access: yes, 2012
Background The enigmatic wormlike parasite Buddenbrockia plumatellae has recently been shown to belong to the Myxozoa, which are now supported as a clade within Cnidaria.
Alexander Gruhl   +5 more
core   +1 more source

Cnidaria

open access: yes, 2015
AbstractCnidaria are one of the basal groups within the metazoans. They are divided into the Medusozoa (Hydrozoa, Scyphozoa, Staurozoa, and Cubozoa) and the Anthozoa, which are thought to be the basal group within the Cnidaria. Cnidaria together with the Ctenophora are the lowest groups with a nervous system that relies on synaptic conduction and are ...
Technau, Ulrich   +2 more
  +6 more sources

Mitochondrial and nuclear genes suggest that stony corals are monophyletic but most families of stony corals are not (Order Scleractinia, Class Anthozoa, Phylum Cnidaria) [PDF]

open access: yes, 2008
Modern hard corals (Class Hexacorallia; Order Scleractinia) are widely studied because of their fundamental role in reef building and their superb fossil record extending back to the Triassic.
Carden Wallace   +33 more
core   +1 more source

First In Situ Observation of Sperm Release in Corynactis carnea (Anthozoa: Corallimorpharia) from Patagonia, Argentina

open access: yesDiversity, 2023
Jewel sea anemones constitute a relatively small group of solitary cnidarians, a sister group of scleractinian corals. In the southwest Atlantic Ocean off Argentina, two species of jewel sea anemones have been found: Corynactis carnea and Corallimorphus ...
Gonzalo Bravo   +3 more
doaj   +1 more source

Evidence for a genetic sex determination in Cnidaria, the Mediterranean red coral (Corallium rubrum) [PDF]

open access: yesRoyal Society Open Science, 2017
Sexual reproduction is widespread among eukaryotes, and the sex-determining processes vary greatly among species. While genetic sex determination (GSD) has been intensively described in bilaterian species, no example has yet been recorded among non ...
M. Pratlong   +9 more
doaj   +1 more source

Expression of Opsins of the Box Jellyfish Tripedalia cystophora Reveals the First Photopigment in Cnidarian Ocelli and Supports the Presence of Photoisomerases

open access: yesFrontiers in Neuroanatomy, 2022
Cubomedusae, or box jellyfish, have a complex visual system comprising 24 eyes of four types. Like other cnidarians, their photoreceptor cells are ciliary in morphology, and a range of different techniques together show that at least two of the eye types—
Anders Garm   +3 more
doaj   +1 more source

Setting the pace: new insights into central pattern generator interactions in box jellyfish swimming [PDF]

open access: yes, 2011
Central Pattern Generators (CPGs) produce rhythmic behaviour across all animal phyla. Cnidarians, which have a radially symmetric nervous system and pacemaker centres in multiples of four, provide an interesting comparison to bilaterian animals for ...
Stöckl Anna Lisa   +11 more
core   +1 more source

A Novel Phospholipase A2 Isolated from Palythoa caribaeorum Possesses Neurotoxic Activity

open access: yesToxins, 2019
Zoanthids of the genus Palythoa are distributed worldwide in shallow waters around coral reefs. Like all cnidarians, they possess nematocysts that contain a large diversity of toxins that paralyze their prey.
Miguel Cuevas-Cruz   +11 more
doaj   +1 more source

Reflectance Confocal Microscopy of Skin after the Sting of the Jellyfish Pelagia noctiluca

open access: yesCase Reports in Dermatology, 2023
Jellyfish are aquatic animals of the phylum Cnidaria found in seas all over the world. They are characterized by the presence of cnidocytes, cells that contain a secretory organelle, the cnidocyst, mainly used for predation and defense purposes. An adult
Giovanni Paolino   +4 more
doaj   +1 more source

A Broad Survey of Gene Body and Repeat Methylation in Cnidaria Reveals a Complex Evolutionary History [PDF]

open access: yes, 2022
DNA methylation, an important component of eukaryotic epigenetics, varies in pattern and function across Metazoa. Notably, bilaterian vertebrates and invertebrates differ dramatically in gene body methylation (GbM).
Zhang, Xinhui, Jacobs, David
core   +1 more source

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