The ultrastructure of nematocysts from the fishing tentacle of the Hawaiian bluebottle, Physalia utriculus (Cnidaria, Hydrozoa, Siphonophora)

@article{Yanagihara2004TheUO,
  title={The ultrastructure of nematocysts from the fishing tentacle of the Hawaiian bluebottle, Physalia utriculus (Cnidaria, Hydrozoa, Siphonophora)},
  author={Angel A. Yanagihara and Janelle M.Y. Kuroiwa and Louise M. Oliver and Dennis D. Kunkel},
  journal={Hydrobiologia},
  year={2004},
  volume={489},
  pages={139-150}
}
Fishing tentacle nematocysts of the hydrozoan, Physalia utriculus, from Hawaiian coastal waters, were examined by light microscopy, as well as by scanning and transmission electron microscopy (SEM and TEM. [] Key Result Ultrastructural examination using SEM and TEM revealed that the cnidome was composed of two sizes of heterotrichous anisorhizas as well as rare rhopoloids (less than one observed per 1000 nematocysts).

Morphology and development of the Portuguese man of war, Physalia physalis

TLDR
This work proposes a framework for homologizing the axes with other siphonophores, and suggests that the tentacle bearing zooids should be called tentacular palpons, and looks at live and fixed larval and non-reproductively mature juvenile specimens and uses optical projection tomography to build on existing knowledge about the morphology and development of this species.

Molecular phylogenetics of the genus Physalia (Cnidaria: Siphonophora) in New Zealand coastal waters reveals cryptic diversity

TLDR
The results are complex and clans are not consistent between the two genes, Nevertheless, it seems that there is substantial cryptic diversity amongst Physalia present in New Zealand coastal waters.

Taxonomic redescription of the Portuguese man-of-war, Physalia physalis (Cnidaria, Hydrozoa, Siphonophorae, Cystonectae) from Brazil

TLDR
Brazilian specimens of P. physalis are described including information on morphology, cnidome, SEM, and histological studies, and taxonomical issues concerning the development of the colonies and eventual synonymy with Physalia utriculus are added.

Factors influencing the occurrence of stinging jellyfish (Physalia spp.) at New Zealand beaches

TLDR
Molecular techniques were applied to the cnidarian genus Physalia to establish which species occur in coastal New Zealand, and to apply models to attempt to forecast its occurrence and infer some mechanisms of dispersal.

Dermatitis caused by coelenterates

TLDR
A correct diagnosis and appropriate treatment are essential in cases of cnidarian envenomations, particularly because specific antivenoms are lacking.

Aporte al conocimiento de las medusas (Cnidaria: Medusozoa) en el departamento del Atlántico, Colombia = Contribution to the knowledge on jellyfishes (Cnidaria: Medusozoa) in the department of Atlántico, Colombia

The Medusozoa subphylum (Cubozoa, Hydrozoa, and Scyphozoa classes) is characterized mainly by a medusoid body scheme. The subphylum groups together organisms with pelagic characteristics, which to

Cnidarian internal stinging mechanism

TLDR
Internal tissues isolated from sea anemones caused the degradation of live Artemia salina nauplii in vitro and were found to be pierced by discharged nematocysts, the first report of such an internal piercing mechanism.

Cloning and functional expression of voltage-gated ion channel subunits from cnidocytes of the Portuguese Man O'War Physalia physalis

TLDR
A variety of channel proteins were identified and full-length sequence obtained for two, a Ca2+ channel β subunit (PpCaVβ) and a Shaker-like K+ channel (PPKV1) and the possible role of these channel proteins in the behavior of cnidocytes is discussed.

Occurrence of Portuguese Man-of War Along Digha Coast, West Bengal:A Threat to Tourists and Fisherfolk

TLDR
The presence of floating P. Physalis from the Digha coast of West Bengal during the summer time of 2017 and the occurrences and distribution of the organism were recorded in different sizes in three different sites.

Assessing the Efficacy of First-Aid Measures in Physalia sp. Envenomation, Using Solution- and Blood Agarose-Based Models

TLDR
Commercial available vinegars, as well as the recently developed Sting No More® Spray, were the most effective rinse solutions, as they irreversibly inhibited cnidae discharge.

References

SHOWING 1-10 OF 53 REFERENCES

Ultrastructure of a novel eurytele nematocyst of Carybdea alata Reynaud (Cubozoa, Cnidaria)

TLDR
The morphological data suggested a series of events involved in the discharge of a novel eurytele from C. alata tentacles as a heterotrichous microbasic euryTele, based on spine, tubule and capsule measurements.

THE FUNCTIONS OF NEMATOCYSTS IN PREY CAPTURE BY EPIPELAGIC SIPHONOPHORES (COELENTERATA, HYDROZOA)

TLDR
Examination by SEM of captured, but uningested prey showed that the heavily-spined threads of these nematocysts adhered to the prey surface, and primarily entangled the prey.

Differentiation and ultrastructure of nematocysts in Halammohydra intermedia (Hydrozoa, Cnidaria)

Halammohydra intermedia (Hydrozoa, Cnidaria) has been studied with respect to nematocyst morphogenesis and ultrastructure. Morphogenetic events agree with earlier descriptions. TEM studies show that

Revision of some Carybdeidae (Scuphozoa : Cubomedusae) including a description of the jellyfish responsible for the 'Irukandji syndrome'

TLDR
The medusa responsible for the "Irukandji syndrome" or "type A stinging" to bathers in northern Australian waters is described, as Carukia barnesi, as well as some histological details of tentacle, gonad and other structures, and the term "tumitele" is proposed for a class of nematocyst seen in the Carybdeidae.

Scanning electron microscopy of the sensory surface of the tentacles of sea anemones and corals

  • R. N. Mariscal
  • Biology
    Zeitschrift für Zellforschung und Mikroskopische Anatomie
  • 2004
TLDR
Examination of the sensory surface of the tentacles of sea anemones and corals prepared by the Freon critical-point method has revealed ciliary cones consisting of a cilium surrounded by a cluster of shorter stereocilia, single long cilia, and microvilli.

THE TOXICITY OF PHYSALIA NEMATOCYSTS

TLDR
The toxin was shown to be devoid of hemolytic activity for fish erythrocytes, and when tested in fish, frogs or mice it appeared to affect the nervous system, particularly the respiratory centers, before voluntary muscles.

Differential toxicity of Physalia physalis (Portuguese man-o'war) nematocysts separated by flow cytometry.

Studies on Australian Cubomedusae, Including a New Genus and Species Apparently Harmful to Man

TLDR
It is probable that Chironex fleckeri is responsible for severe stingings and deaths of humans in northern Austrahan waters, but proof of this hypothesis is lacking and the systematics of the Cubomedusae are reviewed in the light of the differences in the gonads.

A NOVEL KIND OF POLYANIONS AS PRINCIPAL COMPONENTS OF CNIDARIAN NEMATOCYSTS

...