Herpéstidos: Diferenzas entre revisións
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== Anatomía ==
[[Ficheiro:Herpestes.jpg|miniatura|esquerda|Cranio fósil de ''[[Herpestes lemanensis]]'' do [[Oligoceno]], no [[MuseoNacional de Historia Natural de Francia]], en París|alt=]]
As mangostas teñen unha gran semellanza cos [[mustélidos]], coas súas longas faces e corpos, orella pequenas e arredondadas, patas curtas e colas longas que se van adelgazando cara o extremo. A maioría teñen pintas ou grises; unhas poucas teñen [[pelaxe]]s fortemente marcadas. Utilizan as súas garras non retráctiles principalmente para escavar. Teñen pupilas con forma de ovo coma as das cabras. A maioría das especies teñen unha gran glándula anal olorosa, usada para marcar o territorio e sinalr o seu estado reprodutivo. A fórmula dentl das mangostas é similar á dos [[vivérridos]]: {{
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Mongooses also have receptors for [[acetylcholine]] that, like the receptors in snakes, are shaped so that it is impossible for snake [[neurotoxin]] venom to attach to them. Mongooses are one of four known mammalian species with mutations in the [[nicotinic acetylcholine receptor]] that protect against snake venom.<ref name=hedges/> [[Wild boar|Pig]]s, [[honey badger]]s, [[hedgehog]]s, and mongooses all have modifications to the receptor pocket that prevents the [[snake venom]] [[Snake venom#Neurotoxins|α-neurotoxin]] from binding. These represent four separate, independent mutations. In the mongoose, this change is effected uniquely, by [[Glycosylation#Purpose|glycosylation]].<ref>{{cite journal|last1=Drabeck|first1=D.H.|last2=Dean|first2=A.M.|last3=Jansa|first3=S.A.|title=Why the honey badger don't care: Convergent evolution of venom-targeted nicotinic acetylcholine receptors in mammals that survive venomous snake bites.|journal=Toxicon|date=June 1, 2015|volume=99|pages=68–72|doi=10.1016/j.toxicon.2015.03.007|publisher=Elsevier}}</ref> Researchers are investigating whether similar mechanisms protect the mongoose from [[hemotoxin|hemotoxic]] snake venoms.<ref name=hedges>Hedges, Stephen. [http://www.newscientist.com/article/mg15320642.500-science--mongooses-secret-is-to-copy-its-prey.html "Science: Mongoose's secret is to copy its prey"]; [[New Scientist]]; 11 January 1997. Retrieved 16 November 2007.</ref>
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