Results 1 to 10 of about 1,519 (159)

Omnidirectional propulsion in a metachronal swimmer. [PDF]

open access: yesPLoS Computational Biology, 2023
Aquatic organisms often employ maneuverable and agile swimming behavior to escape from predators, find prey, or navigate through complex environments. Many of these organisms use metachronally coordinated appendages to execute complex maneuvers. However,
Adrian Herrera-Amaya, Margaret L Byron
doaj   +2 more sources

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

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   +2 more sources

Reproductive success of inbred strain MV31 of the ctenophore Mnemiopsis leidyi in a self-sustaining inland laboratory culture system [PDF]

open access: yesHeliyon
Ctenophores are an attractive phylogenetic lineage for studying animal evolution due to their early divergence from other metazoans. Among Ctenophora, Mnemiopsis leidyi is a model system for developmental, cellular, molecular genetic, and evolutionary ...
Pranav Garg   +3 more
doaj   +2 more sources

Early Animal Origin of BACE1 APP/Aβ Proteolytic Function [PDF]

open access: yesBiology
Alzheimer’s disease is characterized, in part, by the accumulation of β-amyloid (Aβ) in the brain. Aβ is produced via the proteolysis of APP by BACE1 and γ-secretase.
James A. Langeland   +6 more
doaj   +2 more sources

Evolution of g-type lysozymes in metazoa: insights into immunity and digestive adaptations [PDF]

open access: yesFrontiers in Cell and Developmental Biology
Exploring the evolutionary dynamics of lysozymes is critical for advancing our knowledge of adaptations in immune and digestive systems. Here, we characterize the distribution of a unique class of lysozymes known as g-type, which hydrolyze key components
Krishanu Mukherjee   +2 more
doaj   +2 more sources

From ctenophores to scyphozoans: parasitic spillover of a burrowing sea anemone [PDF]

open access: yesScientific Reports
Most host-parasite associations are explained by phylogenetically conservative capabilities for host utilization, and therefore parasite switches between distantly related hosts are rare.
Anastasiia Iakovleva   +3 more
doaj   +2 more sources

The ctenophore Beroe cf. ovata in the Caspian Sea. The beginning of a new stage in the evolution of the Caspian ecosystem?

open access: yesЮг России: экология, развитие, 2021
Aim. Analysis of the first data regarding the arrival of the predatory ctenophore Beroe cf. ovata in the Caspian Sea and assessment of possible effects of its introduction for the Caspian ecosystem.Material and Methods.
S. V. Vostokov   +3 more
doaj   +1 more source

Cambrian comb jellies from Utah illuminate the early evolution of nervous and sensory systems in ctenophores

open access: yesiScience, 2021
Summary: Ctenophores are a group of predatory macroinvertebrates whose controversial phylogenetic position has prompted several competing hypotheses regarding the evolution of animal organ systems. Although ctenophores date back at least to the Cambrian,
Luke A. Parry   +3 more
doaj   +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

New data on the ctenophore Beroe ovata, an invader to the Caspian Sea

open access: yesЮг России: экология, развитие, 2022
Aim. Analysis of new data on populations of invasive ctenopfores Вeroe ovata and Mnemiopsis leidyi in the Caspian Sea and assessment of adaptation of B. ovata to new habitat conditions.Material and methods. The data was obtained in the Dagestan sector of
S. V. Vostokov   +6 more
doaj   +1 more source

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