Results 51 to 60 of about 7,380 (237)

Hiding in plain sight—Euplokamis dunlapae (Ctenophora) in Norwegian waters

open access: yesJournal of Plankton Research, 2021
Cydippid ctenophores of genus Euplokamis have been rarely reported from the north-east Atlantic in the scientific literature. The conspicuous lack of previous records is likely attributable to methodological constraints detrimental to sampling ...
Sanna Majaneva   +4 more
semanticscholar   +1 more source

Rho Family of Ras-Like GTPases in Early-Branching Animals

open access: yesCells, 2020
Non-bilaterian animals consist of four phyla; Porifera, Cnidaria, Ctenophora, and Placozoa. These early-diverging animals are crucial for understanding the evolution of the entire animal lineage.
Silvestar Beljan   +2 more
doaj   +1 more source

Genomic data do not support comb jellies as the sister group to all other animals [PDF]

open access: yes, 2015
Understanding how complex traits, such as epithelia, nervous systems, muscles, or guts, originated depends on a well-supported hypothesis about the phylogenetic relationships among major animal lineages.
Dohrmann, Martin   +7 more
core   +6 more sources

The early expansion and evolutionary dynamics of POU class genes. [PDF]

open access: yes, 2014
The POU genes represent a diverse class of animal-specific transcription factors that play important roles in neurogenesis, pluripotency, and cell-type specification. Although previous attempts have been made to reconstruct the evolution of the POU class,
Gates, Ruth D   +2 more
core   +1 more source

Digenean metacercaria (Trematoda, Digenea, Lepocreadiidae) parasitizing "coelenterates" (Cnidaria, Scyphozoa and Ctenophora) from Southeastern Brazil

open access: yesBrazilian Journal of Oceanography, 2005
Metacercaria specimens of the genus Opechona (Trematoda: Digenea: Lepocreadiidae) are described parasitizing "coelenterates" (scyphomedusae and ctenophores) from Southeastern Brazil (São Paulo state).
André Carrara Morandini   +3 more
doaj   +1 more source

The IceShark, an effective method for sampling plankton under sea ice

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Seasonal sea ice plays a crucial role in shaping coastal ecosystem dynamics throughout the circumpolar region. Of particular interest to oceanographers is the ice‐ocean interface which functions as a multidimensional habitat, supporting both sympagic algae and pelagic phytoplankton in the under‐ice surface waters.
Eleanor A. Barry   +4 more
wiley   +1 more source

A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)

open access: yesScientific Reports, 2021
Like other soft-bodied organisms, ctenophores (comb jellies) produce fossils only under exceptional taphonomic conditions. Here, we present the first record of a Late Devonian ctenophore from the Escuminac Formation from Miguasha in eastern Canada. Based
Christian Klug   +3 more
doaj   +1 more source

Recording cilia activity in ctenophores: effects of nitric oxide and low molecular weight transmitters

open access: yesFrontiers in Neuroscience, 2023
Cilia are the major effectors in Ctenophores, but very little is known about their transmitter control and integration. Here, we present a simple protocol to monitor and quantify cilia activity and provide evidence for polysynaptic control of cilia ...
Tigran P. Norekian   +3 more
doaj   +1 more source

Incorporating environmental DNA metabarcoding for improved benthic biodiversity and habitat mapping

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Seafloor imagery is commonly used to collect information about the distribution of benthic organisms in order to generate habitat and biodiversity maps. Recent advances in genomics (e.g., environmental DNA; eDNA) show potential to complement video surveys for habitat mapping, but there have been few examples testing this.
Rylan J. Command   +8 more
wiley   +1 more source

Extensive mitochondrial gene rearrangements in Ctenophora: insights from benthic Platyctenida

open access: yesBMC Evolutionary Biology, 2018
Background Complete mitochondrial (mt) genomes have been sequenced for thousands of animals and represent a molecule of choice for many evolutionary studies. Nevertheless, some animal groups have remained under-sampled.
Hanan Arafat   +3 more
doaj   +1 more source

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