Results 61 to 70 of about 3,201 (247)
THE TOXICITY OF PHYSALIA NEMATOCYSTS
The general composition and conditions of reactivity of the nematocysts and nematocyst contents of Physalia are described. A method is presented for isolation of nematocysts without contamination by other tentacular material. The nematocyst content appears to be a highly labile protein complex.
Charles E. Lane, Eleanor Dodge
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THE NEMATOCYST TOXIN OF METRIDIUM
1. Material discharged by isolated nematocysts of Metridium senile senile Linnaeus (1767) has been found to be toxic to crayfish Orconectes virilis Hagen (1870), O. propinquus Girard (1852), and Procambarus econfinae Hobbs (1942).2. The toxin appears to be composed of a proteinaceous, undialyzable fraction, and a dialyzable fraction containing two ...
M. H. Goodwin, M. Telford
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Functional Characteristics of Nematocysts Found on the Scyphomedusa Cyanea Capillata [PDF]
Although prey capture by cnidarians is mediated through nematocysts, their influence on prey selection by cnidarians remains poorly documented. The difficulty in visualizing nematocyst–prey interactions remains the chief obstacle to understanding how the
Colin, Sean, Costello, John H.
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This study introduces a biohybrid microrobot utilizing jellyfish‐stinging capsules as nanoinjectors, integrated onto Janus particles. Controlled by magnetic and electric fields, these microrobots achieve deep tissue penetration and precise drug delivery.
Sinwook Park+3 more
wiley +1 more source
Functional Morphology and Fluid Interactions During Early Development of the Scyphomedusa Aurelia aurita [PDF]
Scyphomedusae undergo a predictable ontogenetic transition from a conserved, universal larval form to a diverse array of adult morphologies. This transition entails a change in bell morphology from a highly discontinuous ephyral form, with deep clefts ...
Colin, S. P.+4 more
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Diel activity correlates with colour pattern morphology of heterobranch sea slugs
The authors show that daytime activity fundamentally shapes the appearance of prey animals to potential predators and that colour pattern phenotypes likely associated with visual signalling are predominantly found in diurnal species of sea slugs. This study showcases novel methodology combining comparative phylogenetic analyses, animal vision modelling,
Cedric P. van den Berg+5 more
wiley +1 more source
Haemolytic activity and characterization of nematocyst venom from Pelagia noctiluca (Cnidaria: Scyphozoa) [PDF]
We investigated the haemolytic capacity of the crude venom extracted from isolated nematocysts of Pelagia noctiluca (Cnidaria: Scyphozoa), and evidenced the proteic fractions responsible for this activity.
BENENATI, Gigliola+9 more
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Single cell sequencing revealed AAG, an energy regulatory protein targeting to glycogen, was highly expressed in jellyfish stings‐induced CF patients. We postulated AAG could increase glycogen metabolism, protecting against jellyfish stings‐induced CF.
Zhen Qin+12 more
wiley +1 more source
A new hydrozoan, Sarsia bella sp. nov. is described in both its hydroid and medusa stage from north of Puget Sound, Washington in the San Juan Islands, USA and off the southernmost tip of Vancouver Island, Canada.
Anita Brinckmann-Voss
doaj +1 more source
Carybdea branchi, sp. nov., a new box jellyfish (Cnidaria: Cubozoa) from South Africa. [PDF]
A common and conspicuous member of the medusan fauna of South Africa has been the subject of repeated taxonomic confusion. After having been mistakenly identified by earlier workers as either Carybdea alata or Tamoya haplonema, this large and colourful ...
Gershwin, Lisa-Ann, Gibbons, Mark J.
core +1 more source