[{"data":1,"prerenderedAt":344},["ShallowReactive",2],{"glossary_en:\u002Fslovar\u002Fultrazvukovaya-zaschita":3,"alt-locale:glossary_en:\u002Fslovar\u002Fultrazvukovaya-zaschita":109,"section-listing:glossary_en:\u002Fslovar":134,"section-listing:disabled":337,"related-covers:en:":338,"related-covers:en:\u002Fvidy-babochek\u002Fvidy\u002Fmedvedica-kaja|\u002Fslovar\u002Faposematizm|\u002Fslovar\u002Fsekvestraciya-toksinov":339},{"id":4,"title":5,"body":6,"coverImage":94,"description":95,"extension":96,"faq":97,"imagePrompt":107,"meta":108,"navigation":109,"order":110,"pageType":111,"path":112,"publishedAt":113,"readingMinutes":114,"relatedLinks":115,"seo":128,"sitemap":131,"stem":132,"tags":110,"updatedAt":110,"__hash__":133},"glossary_en\u002Fslovar\u002Fultrazvukovaya-zaschita.md","Ultrasonic Defense",{"type":7,"value":8,"toc":85},"minimark",[9,14,22,26,33,37,48,52,64,68,71],[10,11,13],"h2",{"id":12},"definition","Definition",[15,16,17,21],"p",{},[18,19,20],"strong",{},"Ultrasonic defense"," refers to anti-predator strategies in which a moth produces its own high-frequency sound, generally in the ultrasonic range beyond human hearing, in direct response to detecting an approaching bat's echolocation calls. Because bats hunt primarily by emitting ultrasonic pulses and interpreting the returning echoes, a moth capable of producing its own competing ultrasonic signal has a way to interfere with, or communicate directly within, the exact sensory channel the bat depends on to hunt.",[10,23,25],{"id":24},"how-the-sound-is-produced","How the sound is produced",[15,27,28,29,32],{},"Moths that use this defense typically generate clicks using a ",[18,30,31],{},"tymbal organ",", a specialized, ribbed region of the thoracic cuticle that buckles rapidly to produce a train of ultrasonic clicks when muscles attached to it contract — broadly analogous to the mechanism cicadas use to produce their much lower-frequency songs, but tuned to a completely different, much higher frequency range matched to bat echolocation calls.",[10,34,36],{"id":35},"two-possible-functions-jamming-and-warning","Two possible functions: jamming and warning",[15,38,39,40,43,44,47],{},"Researchers distinguish two, not mutually exclusive, functions for these clicks. ",[18,41,42],{},"Acoustic jamming"," occurs when the moth's clicks physically interfere with the bat's ability to precisely interpret its own echolocation returns during the final, most critical phase of an attack, when timing and precision matter most — effectively degrading the bat's targeting accuracy at the moment it counts. ",[18,45,46],{},"Acoustic aposematism"," occurs when the clicks instead function as a learned warning signal: bats that have previously attacked a toxic, clicking moth and had an unpleasant experience learn to associate the click pattern itself with unpalatability, and subsequently avoid clicking moths without needing to attack them again.",[10,49,51],{"id":50},"the-garden-tiger-moth","The garden tiger moth",[15,53,54,55,58,59,63],{},"The ",[18,56,57],{},"garden tiger moth"," (",[60,61,62],"em",{},"Arctia caja","), with its bold brown-and-orange warning colouration and toxin-sequestering woolly-bear caterpillar, is among the best-studied tiger moths for this behaviour. Like many members of subfamily Arctiinae, it is capable of producing ultrasonic clicks specifically triggered by detecting bat echolocation calls, adding an acoustic layer of defense to the visual aposematic warning its wing pattern already provides during the day — a combined chemical, visual, and acoustic defense system operating across both times of day the species is active.",[10,65,67],{"id":66},"why-this-matters-for-predator-prey-arms-races","Why this matters for predator-prey arms races",[15,69,70],{},"Ultrasonic defense is a striking example of a sensory arms race: as bats evolved increasingly sophisticated echolocation for hunting insects in complete darkness, at least one major insect lineage evolved a countermeasure operating in exactly the same sensory domain, rather than relying solely on the visual and chemical defenses effective against daytime predators like birds.",[15,72,73,74,79,80,84],{},"See also: ",[75,76,78],"a",{"href":77},"\u002Fen\u002Fslovar\u002Faposematizm","aposematism",", ",[75,81,83],{"href":82},"\u002Fen\u002Fslovar\u002Fsekvestraciya-toksinov","toxin sequestration",".",{"title":86,"searchDepth":87,"depth":87,"links":88},"",2,[89,90,91,92,93],{"id":12,"depth":87,"text":13},{"id":24,"depth":87,"text":25},{"id":35,"depth":87,"text":36},{"id":50,"depth":87,"text":51},{"id":66,"depth":87,"text":67},"\u002Fimages\u002Fslovar\u002Fultrazvukovaya-zaschita.png","Ultrasonic defense is when a moth produces its own high-frequency clicks to jam bat sonar or advertise toxicity, turning the predator's own detection system against it.","md",[98,101,104],{"q":99,"a":100},"What is ultrasonic defense in moths?","Ultrasonic defense is a set of anti-predator strategies in which a moth produces its own high-frequency, ultrasonic clicks in response to a hunting bat's echolocation calls — either to jam the bat's sonar, to startle it, or to advertise that the moth is toxic and not worth attacking, all using sound frequencies far above human hearing.",{"q":102,"a":103},"Which moths use ultrasonic clicks for defense?","Tiger moths (family Erebidae, subfamily Arctiinae), including the garden tiger moth (Arctia caja), are the best-studied group: they produce ultrasonic clicks using specialized structures on the thorax called tymbals, in direct response to detecting an approaching bat's echolocation calls.",{"q":105,"a":106},"Does clicking actually confuse bat sonar, or just warn the bat?","Research suggests both functions occur, depending on species and context: some tiger moth clicks appear to genuinely jam or degrade the precision of bat echolocation during the final attack phase, while others function mainly as an acoustic warning signal, analogous to visual aposematism, informing an experienced bat that the moth is chemically defended and not worth pursuing.","Photorealistic nature photo, brown and orange tiger moth in flight at dusk with a bat silhouette approaching in the blurred background, dark forest edge, dramatic low light, 16:9",{},true,null,"glossary","\u002Fslovar\u002Fultrazvukovaya-zaschita","12.10.2026",1,[116,120,124],{"label":117,"path":118,"description":119},"Garden Tiger Moth","\u002Fvidy-babochek\u002Fvidy\u002Fmedvedica-kaja","A tiger moth known for producing ultrasonic clicks in response to hunting bats",{"label":121,"path":122,"description":123},"Aposematism","\u002Fslovar\u002Faposematizm","The visual counterpart to acoustic warning signals like ultrasonic clicking",{"label":125,"path":126,"description":127},"Toxin Sequestration","\u002Fslovar\u002Fsekvestraciya-toksinov","The chemical defense that ultrasonic warning clicks often advertise",{"title":129,"description":130},"Ultrasonic Defense — how tiger moths fight back against bats","Ultrasonic defense: moths producing high-frequency clicks to jam or warn off echolocating bats. How tiger moths like Arctia caja use this defense.",{"loc":112},"slovar\u002Fultrazvukovaya-zaschita","mtGJ2euqml5uooHveaTCZabcAs55Clhc2c7ZeIYjOnk",[135,141,144,150,155,160,165,170,175,180,185,190,196,202,207,212,217,222,227,232,237,242,248,253,258,263,268,273,278,283,288,293,298,304,310,316,321,326,330,331],{"title":136,"description":137,"path":138,"coverImage":139,"publishedAt":140,"order":110},"Antenna","Butterfly antennae are paired sensory organs on the head, used to detect odors, pheromones, and vibrations. Their shape is a key identification trait.","\u002Fslovar\u002Fantenna","\u002Fimages\u002Fslovar\u002Fantenna.png","01.05.2026",{"title":121,"description":142,"path":122,"coverImage":143,"publishedAt":140,"order":110},"Aposematism is warning coloration in toxic or unpalatable butterflies. Bright colors signal danger to predators and protect the species from being eaten.","\u002Fimages\u002Fslovar\u002Faposematizm.png",{"title":145,"description":146,"path":147,"coverImage":148,"publishedAt":149,"order":110},"Batesian Mimicry","Batesian mimicry is when a harmless species evolves to resemble a toxic or dangerous one, borrowing its predator-deterrent reputation without the actual defense.","\u002Fslovar\u002Fbatezovskaya-mimikriya","\u002Fimages\u002Fslovar\u002Fbatezovskaya-mimikriya.png","25.07.2026",{"title":151,"description":152,"path":153,"coverImage":154,"publishedAt":140,"order":110},"Biotope","A biotope is a uniform habitat patch with specific conditions, home to a characteristic community. Each butterfly species prefers its own biotope.","\u002Fslovar\u002Fbiotop","\u002Fimages\u002Fslovar\u002Fbiotop.png",{"title":156,"description":157,"path":158,"coverImage":159,"publishedAt":140,"order":110},"Caterpillar","The caterpillar is the larval stage of a butterfly, whose main task is to eat and grow — accumulating about 99% of the energy needed for transformation.","\u002Fslovar\u002Fgusenica","\u002Fimages\u002Fslovar\u002Fgusenica.jpg",{"title":161,"description":162,"path":163,"coverImage":164,"publishedAt":140,"order":110},"Chitin","Chitin is the main structural polymer of insect integument. The hard external skeleton of butterflies, wing scales, and caterpillar armor are made of chitin.","\u002Fslovar\u002Fkhitin","\u002Fimages\u002Fslovar\u002Fkhitin.jpg",{"title":166,"description":167,"path":168,"coverImage":169,"publishedAt":140,"order":110},"Chrysalis","A chrysalis is a butterfly pupa with a hard chitinous case, often with a golden or silvery sheen. Inside, the organism is completely rebuilt.","\u002Fslovar\u002Fkhrizalida","\u002Fimages\u002Fslovar\u002Fkhrizalida.jpg",{"title":171,"description":172,"path":173,"coverImage":174,"publishedAt":140,"order":110},"Diapause","Diapause is a state of physiological rest in insects that allows survival of an unfavorable season. In butterflies, it can occur at any developmental stage.","\u002Fslovar\u002Fdiapauza","\u002Fimages\u002Fslovar\u002Fdiapauza.png",{"title":176,"description":177,"path":178,"coverImage":179,"publishedAt":140,"order":110},"Dimorphism","Dimorphism is the existence of two distinct forms within one species. In butterflies, males and females of the same species can differ sharply in coloration.","\u002Fslovar\u002Fdimorfizm","\u002Fimages\u002Fslovar\u002Fdimorfizm.jpg",{"title":181,"description":182,"path":183,"coverImage":184,"publishedAt":140,"order":110},"Eclosion","Eclosion is the emergence of an adult butterfly from the pupa. One of the most vulnerable and striking moments in the life cycle of lepidopterans.","\u002Fslovar\u002Feklozia","\u002Fimages\u002Fslovar\u002Feklozia.jpg",{"title":186,"description":187,"path":188,"coverImage":189,"publishedAt":140,"order":110},"Endemic","An endemic is a species that lives only in a specific geographic region and nowhere else. Islands and mountains are the main centers of butterfly endemism.","\u002Fslovar\u002Fendemik","\u002Fimages\u002Fslovar\u002Fendemik.jpg",{"title":191,"description":192,"path":193,"coverImage":194,"publishedAt":195,"order":110},"Eyespots","Eyespots are circular wing markings that mimic a vertebrate eye, used by butterflies either to startle predators or to redirect attacks away from vital body parts.","\u002Fslovar\u002Flozhnye-glazki","\u002Fimages\u002Fslovar\u002Flozhnye-glazki.png","13.08.2026",{"title":197,"description":198,"path":199,"coverImage":200,"publishedAt":201,"order":110},"Frugivory","Frugivory is feeding on fermenting fruit rather than flower nectar — the main energy source for many tropical forest butterflies, including some of the most spectacular species.","\u002Fslovar\u002Ffrugivoriya","\u002Fimages\u002Fslovar\u002Ffrugivoriya.png","28.08.2026",{"title":203,"description":204,"path":205,"coverImage":206,"publishedAt":140,"order":110},"Holometabolism","Holometabolism is a type of insect development with complete metamorphosis: egg → larva → pupa → imago. All butterflies develop by this type.","\u002Fslovar\u002Fgolometaboliya","\u002Fimages\u002Fslovar\u002Fgolometaboliya.jpg",{"title":208,"description":209,"path":210,"coverImage":211,"publishedAt":140,"order":110},"Host plant","A host plant is a plant whose leaves a caterpillar of a given butterfly species feeds on. Most species are strictly specialized on 1–3 host plants.","\u002Fslovar\u002Fkormovoe-rastenie","\u002Fimages\u002Fslovar\u002Fkormovoe-rastenie.jpg",{"title":213,"description":214,"path":215,"coverImage":216,"publishedAt":140,"order":110},"Imago","Imago is the adult, sexually mature stage of an insect with fully formed wings. The final phase of complete metamorphosis.","\u002Fslovar\u002Fimago","\u002Fimages\u002Fslovar\u002Fimago.jpg",{"title":218,"description":219,"path":220,"coverImage":221,"publishedAt":140,"order":110},"Lepidoptera","Lepidoptera is the order of scale-winged insects, including butterflies and moths. The name means “scale-winged”: wings are covered with microscopic scales.","\u002Fslovar\u002Flepidoptera","\u002Fimages\u002Fslovar\u002Flepidoptera.jpg",{"title":223,"description":224,"path":225,"coverImage":226,"publishedAt":140,"order":110},"Melanism","Melanism is excess accumulation of dark pigment melanin, causing darkened coloration. Industrial melanism in the peppered moth is a classic evolution example.","\u002Fslovar\u002Fmelanizm","\u002Fimages\u002Fslovar\u002Fmelanizm.jpg",{"title":228,"description":229,"path":230,"coverImage":231,"publishedAt":140,"order":110},"Metamorphosis","Metamorphosis is complete transformation of an insect passing through four developmental stages: egg, larva (caterpillar), pupa, and adult (imago).","\u002Fslovar\u002Fmetamorfoz","\u002Fimages\u002Fslovar\u002Fmetamorfoz.jpg",{"title":233,"description":234,"path":235,"coverImage":236,"publishedAt":140,"order":110},"Migration","Butterfly migration is seasonal movement over long distances. The record holder is the monarch, at up to 4,500 km; red admirals and painted ladies also migrate.","\u002Fslovar\u002Fmigraciya","\u002Fimages\u002Fslovar\u002Fmigraciya.jpg",{"title":238,"description":239,"path":240,"coverImage":241,"publishedAt":140,"order":110},"Mimicry","Mimicry in butterflies is resemblance to other species or objects for protection from predators. Batesian and Müllerian mimicry, with examples.","\u002Fslovar\u002Fmimikriya","\u002Fimages\u002Fslovar\u002Fmimikriya.jpg",{"title":243,"description":244,"path":245,"coverImage":246,"publishedAt":247,"order":110},"Molecular Clock","The molecular clock is a method that estimates when two species diverged from a common ancestor by measuring the accumulated genetic differences between their DNA.","\u002Fslovar\u002Fmolekulyarnye-chasy","\u002Fimages\u002Fslovar\u002Fmolekulyarnye-chasy.png","15.09.2026",{"title":249,"description":250,"path":251,"coverImage":252,"publishedAt":140,"order":110},"Monophage","A monophage is a species whose caterpillars feed on only one species or genus of plant. Monophagy makes a butterfly vulnerable if that plant disappears.","\u002Fslovar\u002Fmonofag","\u002Fimages\u002Fslovar\u002Fmonofag.jpg",{"title":254,"description":255,"path":256,"coverImage":257,"publishedAt":140,"order":110},"Nectar","Nectar is the sweet secretion of flowers and the main energy source for adult butterflies, which drink it through the proboscis and carry pollen too.","\u002Fslovar\u002Fnektar","\u002Fimages\u002Fslovar\u002Fnektar.jpg",{"title":259,"description":260,"path":261,"coverImage":262,"publishedAt":140,"order":110},"Oviposition","Oviposition is egg-laying by a female butterfly, who carefully chooses a host plant, tapping leaves with her legs, and lays eggs on the underside.","\u002Fslovar\u002Fovipozitsiya","\u002Fimages\u002Fslovar\u002Fovipozitsiya.jpg",{"title":264,"description":265,"path":266,"coverImage":267,"publishedAt":140,"order":110},"Pheromones","Butterfly pheromones are chemical signals for attracting mates, marking territory, and communication. Males and females release different pheromones.","\u002Fslovar\u002Fferomon","\u002Fimages\u002Fslovar\u002Fferomon.jpg",{"title":269,"description":270,"path":271,"coverImage":272,"publishedAt":140,"order":110},"Pollination","Pollination is transfer of pollen from anther to stigma. Butterflies are important pollinators: they move pollen between flowers while feeding on nectar.","\u002Fslovar\u002Fopylenie","\u002Fimages\u002Fslovar\u002Fopylenie.jpg",{"title":274,"description":275,"path":276,"coverImage":277,"publishedAt":140,"order":110},"Polyphagy","Polyphagy is the ability to feed on a wide range of plants. Polyphagous caterpillars are less vulnerable when one host plant species is lost than monophages.","\u002Fslovar\u002Fpolifagiya","\u002Fimages\u002Fslovar\u002Fpolifagiya.jpg",{"title":279,"description":280,"path":281,"coverImage":282,"publishedAt":140,"order":110},"Proboscis","The proboscis is the mouthpart of an adult butterfly, shaped as a flexible tube for sucking nectar and other liquids. At rest it is coiled in a spiral.","\u002Fslovar\u002Fkhobotok","\u002Fimages\u002Fslovar\u002Fkhobotok.jpg",{"title":284,"description":285,"path":286,"coverImage":287,"publishedAt":140,"order":110},"Puddling","Puddling in butterflies is behavior where insects gather on damp soil, puddles, or droppings to obtain mineral salts and amino acids.","\u002Fslovar\u002Fpudling","\u002Fimages\u002Fslovar\u002Fpudling.jpg",{"title":289,"description":290,"path":291,"coverImage":292,"publishedAt":140,"order":110},"Pupa","The pupa is the third stage of complete metamorphosis, when the caterpillar transforms into a butterfly — outwardly still, but rebuilding within.","\u002Fslovar\u002Fkukolka","\u002Fimages\u002Fslovar\u002Fkukolka.jpg",{"title":294,"description":295,"path":296,"coverImage":297,"publishedAt":140,"order":110},"Range","Range is the geographic area within which a given butterfly species lives. Ranges may be continuous, fragmented, expanding, or shrinking.","\u002Fslovar\u002Fareal","\u002Fimages\u002Fslovar\u002Fareal.png",{"title":299,"description":300,"path":301,"coverImage":302,"publishedAt":303,"order":110},"Reintroduction","Reintroduction is the deliberate release of captive-bred or translocated individuals into a habitat where a species has gone locally extinct, aiming to re-establish a self-sustaining wild population.","\u002Fslovar\u002Freintroduktsiya","\u002Fimages\u002Fslovar\u002Freintroduktsiya.png","22.07.2026",{"title":305,"description":306,"path":307,"coverImage":308,"publishedAt":309,"order":110},"Relict Species","A relict species is a survivor of a once-widespread group whose range has contracted to isolated pockets — often mountaintops or glacial refuges — left over after past climate change.","\u002Fslovar\u002Freliktovyi-vid","\u002Fimages\u002Fslovar\u002Freliktovyi-vid.png","01.08.2026",{"title":311,"description":312,"path":313,"coverImage":314,"publishedAt":315,"order":110},"Stenotopic Species","A stenotopic species tolerates only a narrow range of habitat conditions, unlike a eurytopic generalist that thrives across many different environments.","\u002Fslovar\u002Fstenotopnyi-vid","\u002Fimages\u002Fslovar\u002Fstenotopnyi-vid.png","07.08.2026",{"title":317,"description":318,"path":319,"coverImage":320,"publishedAt":140,"order":110},"Taxonomy","Taxonomy is the science of classifying organisms. Butterflies belong to order Lepidoptera; taxonomy explains why the tortoiseshell is a nymphalid, not a blue.","\u002Fslovar\u002Ftaksonomiya","\u002Fimages\u002Fslovar\u002Ftaksonomiya.jpg",{"title":322,"description":323,"path":324,"coverImage":325,"publishedAt":140,"order":110},"Thermoregulation","Thermoregulation in butterflies is maintaining working body temperature. Unable to generate heat, they warm up in sun, wings spread like solar panels.","\u002Fslovar\u002Ftermoregulyatsiya","\u002Fimages\u002Fslovar\u002Ftermoregulyatsiya.jpg",{"title":125,"description":327,"path":126,"coverImage":328,"publishedAt":329,"order":110},"Toxin sequestration is when a caterpillar stores plant-derived toxins from its host plant unchanged in its own tissues, turning the plant's chemical defense into its own.","\u002Fimages\u002Fslovar\u002Fsekvestraciya-toksinov.png","19.08.2026",{"title":5,"description":95,"path":112,"coverImage":94,"publishedAt":113,"order":110},{"title":332,"description":333,"path":334,"coverImage":335,"publishedAt":336,"order":110},"Wing Venation","Wing venation is the pattern of hollow, rigid veins that forms a butterfly wing's supporting framework — its precise layout is a key character for identification and classification.","\u002Fslovar\u002Fzhilkovanie-kryla","\u002Fimages\u002Fslovar\u002Fzhilkovanie-kryla.png","27.07.2026",[],[],[340,342,343],{"label":117,"path":118,"description":119,"coverImage":341,"latinName":62},"\u002Fimages\u002Fvidy-babochek\u002Fvidy\u002Fmedvedica-kaja.png",{"label":121,"path":122,"description":123,"coverImage":143,"latinName":110},{"label":125,"path":126,"description":127,"coverImage":328,"latinName":110},1791911192943]