Cnidoblasto: Diferenzas entre revisións

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== Toxicidade dos nematocistos ==
 
NematocystsOs arecnidocistos veryson efficientarmas weaponsmoi eficientes. AUn single nematocystcnidocisto hasé beensuficiente shownpara toparalizar suffice in paralyzing a smallun [[arthropodartrópodo]] pequeno (larva de ''[[Drosophila]]'' [[larva]]). TheOs mostcnidocitos deadlymáis cnidocytesperigosos (topara humansos humanos, atpolo leastmenos) aretéñenos found on the body of aas [[box jellyfishcubozoos|cubomedusas]].<ref name="pmid16928389">{{cite journal |author=Tibballs J |title=Australian venomous jellyfish, envenomation syndromes, toxins and therapy |journal=Toxicon |volume=48 |issue=7 |pages=830–59 |date=December 2006 |pmid=16928389 |doi=10.1016/j.toxicon.2006.07.020 |url=}}</ref><ref name="pmid17688901">{{cite journal |author=Brinkman D, Burnell J |title=Identification, cloning and sequencing of two major venom proteins from the box jellyfish, Chironex fleckeri |journal=Toxicon |volume=50 |issue=6 |pages=850–60 |date=November 2007 |pmid=17688901 |doi=10.1016/j.toxicon.2007.06.016 |url=}}</ref><ref name="pmid18243272">{{cite journal |author=Brinkman D, Burnell J |title=Partial purification of cytolytic venom proteins from the box jellyfish, Chironex fleckeri |journal=Toxicon |volume=51 |issue=5 |pages=853–63 |date=April 2008 |pmid=18243272 |doi=10.1016/j.toxicon.2007.12.017 |url=}}</ref> OneUn membermembro ofdeste this familygrupo, thea seaavespa wasp,de mar ''[[Chironex fleckeri]]'', isconsidérase "claimedo toanima bemariño themáis mostvelenoso venomous marine animal knowncoñecido"," accordingsegundo to theo [[AustralianInstituto InstituteAustraliano ofde MarineCiencias ScienceMariñas]]. ItPode cancausar causeunha excruciatinggran paindor tonos humanshumanos, sometimese followedpode byprovocar deathen ocasións a morte. OtherOutros cnidarianscnidarios, suchcomo asa the jellyfishmedusa ''[[Lion's mane jellyfish|Cyanea capillata]]'' (theou "[[The Adventure of the Lion's Mane|Lion's Mane]]" made famous byo [[Sherlock Holmeshidrozoo]]) or the hydrozoan ''Physalia physalis'' ([[Portuguesecarabela man o' warportuguesa]], "Bluebottle") canpoden causetamén extremelycausar painfulunha andgran dor e sometimesás fatalveces stingsson mortais. OnPor theoutra other handparte, as [[Shoaling and schooling|aggregatinganemone]]s seade anemonesmar maygregarias haveson theunhas lowestdas stingque intensity,teñen perhapsunha duepicadura tomáis theleve, inabilityquizais ofdebido theá nematocystsincapacidade todos penetrateseus thecnidocistos de penetrar na skinpel, creatingcreando aunha feelingsensación similar toá touchingde stickytocar candiesvelas pegaxosas. BesidesAdemais feedingde andpara alimentarse e defensedefenderse, seaas anemoneanemones andde mar e as colonias de coral coloniesusan useos cnidocytescnidocistos todos stingseus onecnidoblastos anotherpara inpicarse ordere defender o toseu defendterritorio orou wingañar spaceespazo.<ref>http://www.youtube.com/watch?v=WQEiYWGitKs</ref>
 
O [[veleno]] de animais como os cnidarios, [[escorpión]]s e [[araña]]s é específico de especie. Ademais, substancias que son debilmente tóxicas para os humanos poden ser moi tóxicas para as pequenas presas naturais dalgúns cnidarios ou para os depredadores que os queren comer a eles. Esta especificidade foi utilizada para crear novas medicinas e bioinsecticidas.
[[Venom]] from animals such as cnidarians, [[scorpion]]s and [[spider]]s may be species-specific. A substance that is weakly toxic for humans or other mammals may be strongly toxic to the natural prey or predators of the venomous animal. Such specificity has been used to create new medicines and bioinsecticides.
 
Certos tipos de nudibranquios (moluscos) como os aeólidos, conservan os cnidocistos das presas que dixiren, fenómeno chamado cleptocnidia, (ademais da [[cleptoplastia]] que tamén presentan). Alomacénanos no extremo dos seus cerata.
Animals in the phylum [[Ctenophora]] ("sea-gooseberries" or "comb jellies") are transparent and jelly-like but have no nematocysts, and are harmless to humans.
 
Certain types of sea slugs, such as the nudibranch aeolids, are known to undergo kleptocnidae (in addition to [[kleptoplasty]]), whereby the organisms store nematocysts of digested prey at the tips of their cerata.
 
==Notas==