What's the difference between ephyra and jellyfish?
Ephyra
Definition:
(n.) A stage in the development of discophorous medusae, when they first begin to swim about after being detached from the strobila. See Strobila.
Example Sentences:
(1) The strobila, specificially the ephyra, is a mixture of both polypoid and medusoid response types.
(2) This similarity suggests that both coordinated responses in the polyp are coordinated by interneural facilitation in the diffuse nerve net (DNN) as in the ephyra.
(3) Developmental abnormalities of the polyps and ephyrae were recorded with the scanning electron microscope and light microscope.
(4) Ephyra cell aggregates showed little morphogenesis, whereas cells from presumptive ephyra tissue gave rise to structures with tentacles and multiple oral openings.
(5) Major findings from this investigation were the absence of rhopalia and statoliths in ephyrae at 150 and 200 Gy, a reduction in pulses per minute in the ephyrae at 100, 150, and 200 Gy, a reduction in ephyrae released at 150, 200, and 400 Gy, and the development of polyp monsters.
(6) Morphology of the ephyrae, and statolith and rhopalia numbers were recorded using the light microscope.
(7) Therefore, the ephyra is a mixture of polypoid and medusoid behaviors.
(8) As the ephyra matures into an adult medusa both polypoid responses are lost, but the DNN remains to modulate pacemaker output and control marginal tentacle contractions.
(9) Mixed reaggregates containing equal proportions of polyp and ephyra cells formed irregular structures with transparent outer layer and opaque inner cell mass, suggesting stage-specific sorting.
(10) Furthermore, feeding and spasm in the ephyra are similar to feeding and the protective response in the polyp.
(11) Cells of scyphistomae, strobilae, and ephyrae were dissociated with trypsin and reaggregated.
(12) As development proceeds from polyp, to ephyra, to medusa, each subsequent stage acquires some new behavior while retaining some aspect from the previous stage.
(13) Swimming in the ephyra is a medusoid behavior but feeding and spasm are coordinated by the DNN and are polypoid responses.
Jellyfish
Definition:
(n.) Any one of the acalephs, esp. one of the larger species, having a jellylike appearance. See Medusa.
Example Sentences:
(1) When Matt Slater went swimming with his dog Mango in a Cornish estuary this month, he bumped into a barrel jellyfish.
(2) In-hospital resuscitation from unresponsive circulatory arrest should now involve intravenously-administered verapamil (or its equivalent) and additional box-jellyfish antivenom, while the patient is being monitored.
(3) The ultrastructure and major soluble proteins of the transparent eye lens of two cubomedusan jellyfish, Tripedalia cystophora and Carybdea marsupialis, have been examined.
(4) I was sitting in the room, reading all the negativity and death threats, and by now the helium balloons were half-full, hovering like jellyfish.
(5) I know a little about the jellyfishes of Australia because when I worked there for the Guardian, poisonous species such as the box jellyfish would occasionally kill a luckless swimmer off the tropical north coast.
(6) The survey for the UK, which asks people to report jellyfish they see in the sea or on beaches, comes after a mass invasion of thousands of miles of the Mediterranean coastline by millions of jellyfish in June, affecting tourists who head there in the summer.
(7) Both women reported having been stung by jellyfish a month earlier.
(8) These cases corroborate the vascular and neurogenic injury, which previously have been reported in experimental animals and in human patients, that may result from jellyfish venoms.
(9) Contact with the tentacles of the jellyfish had produced characteristic whiplash-like weals on the skin.
(10) Among the newly created MCZs are Mounts Bay, covering St Michael’s Mount and the Marazion where seagrass, stalked jellyfish and crayfish live, and Greater Haig Fras, the only substantial area of rocky reef in the Celtic Sea.
(11) The few skin reactions obtained confirm the low dermototoxicity of the jellyfish studied.
(12) Jellyfish stings should be recognised as an unusual variant of the numerous causes which have been described for Mondor's disease.
(13) From intrepid turtles to pioneering jellyfish, a host of animals have made their mark as the unsung heroes of space exploration.
(14) Mechanisms that cause reentry were defined in rings of tissue cut from jellyfish as early as 1906 by Mayer.
(15) Also featured are the puffer fish, dung beetle, veiled chameleon and moon jellyfish.
(16) It's hard not to describe this creature without resorting to multiple similes – it's like a mushroom, an umbrella, a beating heart, an alien lifeform – all of which diminish its glory, as indeed does the word "jellyfish".
(17) This isn’t just about the effect on other species,” said Stefano Piraino, a jellyfish expert at the University of Salento, and one of the 18 signatories.
(18) Jellyfish appear to be on the increase globally, which may be part of a natural cycle or linked to factors caused by humans such as pollution, over-fishing or even climate change, experts said.
(19) Aequorin, a Ca(II)-sensitive bioluminescent protein from jellyfish, emits light at 469 nm from an excited state of a substituted pyrazine (oxyluciferin) which results from the oxidation of a chromophore molecule that is noncovalently bound to the protein.
(20) A new cytolysin has been isolated from the nematocysts of the jellyfish, Rhizostoma pulmo, and named rhizolysin.