[{"data":1,"prerenderedAt":361},["ShallowReactive",2],{"glossary_en:\u002Fslovar\u002Freintroduktsiya":3,"alt-locale:glossary_en:\u002Fslovar\u002Freintroduktsiya":138,"section-listing:glossary_en:\u002Fslovar":166,"section-listing:disabled":351,"related-covers:en:":352,"related-covers:en:\u002Fentsiklopediya\u002Fkrasnaya-kniga-babochek-mira|\u002Fvidy-babochek\u002Fvidy\u002Fgolubyanka-arion|\u002Fslovar\u002Fareal|\u002Fslovar\u002Fendemik":353},{"id":4,"title":5,"body":6,"coverImage":123,"description":124,"extension":125,"faq":126,"imagePrompt":136,"meta":137,"navigation":138,"order":139,"pageType":140,"path":141,"publishedAt":142,"readingMinutes":143,"relatedLinks":144,"seo":160,"sitemap":163,"stem":164,"tags":139,"updatedAt":139,"__hash__":165},"glossary_en\u002Fslovar\u002Freintroduktsiya.md","Reintroduction",{"type":7,"value":8,"toc":115},"minimark",[9,14,25,36,40,43,51,55,66,77,88,92,99],[10,11,13],"h2",{"id":12},"definition","Definition",[15,16,17,20,21,24],"p",{},[18,19,5],"strong",{}," is the deliberate release of individuals of a species — bred in captivity, raised from translocated eggs or larvae, or moved directly from a healthy donor population — into a site within the species' historical range where it has gone locally extinct. The goal is not a one-off release but the establishment of a ",[18,22,23],{},"self-sustaining wild population"," that persists without further human intervention.",[15,26,27,28,31,32,35],{},"Reintroduction is distinct from simple ",[18,29,30],{},"translocation",", which moves individuals between existing populations (for example, to boost genetic diversity), and from ",[18,33,34],{},"introduction",", which places a species somewhere it never previously occurred.",[10,37,39],{"id":38},"why-reintroduction-is-hard","Why reintroduction is hard",[15,41,42],{},"A butterfly reintroduction can only succeed if the cause of the original extinction has actually been identified and fixed. Releasing butterflies into a site that still lacks the right host plant, the right microclimate, or — in species with complex life cycles — the right symbiotic partner simply produces a doomed colony that fades out within a few generations, sometimes masking the failure for a year or two before it becomes obvious.",[15,44,45,46,50],{},"Because of this, modern reintroduction programs invest heavily in habitat restoration and monitoring ",[47,48,49],"em",{},"before"," any butterflies are released, and continue monitoring for years afterward to confirm the population is truly self-sustaining rather than propped up by repeated re-releases.",[10,52,54],{"id":53},"the-large-blue-a-landmark-case","The Large Blue: a landmark case",[15,56,57,58,61,62,65],{},"The best-documented butterfly reintroduction is the ",[18,59,60],{},"Large Blue"," (",[47,63,64],{},"Maculinea arion",") in the United Kingdom. The species was declared extinct in Britain in 1979, at the end of a long decline that puzzled conservationists for decades — habitat protection alone kept failing to save it.",[15,67,68,69,72,73,76],{},"The breakthrough came from research showing that Large Blue caterpillars are ",[18,70,71],{},"obligate parasites of a single red ant species",", ",[47,74,75],{},"Myrmica sabuleti",", which itself depends on short, warm, closely-grazed turf. As traditional grazing declined across Britain's chalk grasslands in the mid-20th century, the ant's habitat cooled and thickened, the right ant species was replaced by a less suitable relative, and the butterfly's host disappeared — taking the Large Blue with it, even from sites that still looked superficially fine for butterflies.",[15,78,79,80,83,84,87],{},"Once this mechanism was understood, a reintroduction program starting in ",[18,81,82],{},"1983"," used stock from Sweden, paired with grazing regimes restored specifically to favor ",[47,85,86],{},"M. sabuleti",". The result is one of conservation biology's clearest success stories: the Large Blue now flies at dozens of restored sites across southern England, decades after being declared nationally extinct.",[10,89,91],{"id":90},"reintroduction-and-the-red-list","Reintroduction and the Red List",[15,93,94,95,98],{},"Reintroduction is one of the key recovery tools referenced by international frameworks such as the ",[18,96,97],{},"IUCN Red List",": a species downgraded from Extinct in the Wild, or recovering from Critically Endangered status, often owes that improvement specifically to a documented reintroduction program rather than to natural recolonization. Conservation plans built around Red List assessments frequently name reintroduction as the concrete next step once the underlying threat has been addressed.",[15,100,101,102,72,107,72,110,114],{},"See also: ",[103,104,106],"a",{"href":105},"\u002Fen\u002Fslovar\u002Fareal","range",[103,108,60],{"href":109},"\u002Fen\u002Fvidy-babochek\u002Fvidy\u002Fgolubyanka-arion",[103,111,113],{"href":112},"\u002Fen\u002Fentsiklopediya\u002Fkrasnaya-kniga-babochek-mira","International Red List of Butterflies",".",{"title":116,"searchDepth":117,"depth":117,"links":118},"",2,[119,120,121,122],{"id":12,"depth":117,"text":13},{"id":38,"depth":117,"text":39},{"id":53,"depth":117,"text":54},{"id":90,"depth":117,"text":91},"\u002Fimages\u002Fslovar\u002Freintroduktsiya.png","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.","md",[127,130,133],{"q":128,"a":129},"What is reintroduction in butterfly conservation?","Reintroduction is the planned release of butterflies — usually bred in captivity or moved from a healthy donor population — into a site where the species used to live but has died out, with the goal of establishing a new self-sustaining wild colony.",{"q":131,"a":132},"What is the most famous butterfly reintroduction success story?","The Large Blue (Maculinea arion) in the United Kingdom. The species went extinct there in 1979 after its dependence on a specific red ant host was misunderstood, but a reintroduction program starting in 1983, based on corrected habitat management, restored it to dozens of sites.",{"q":134,"a":135},"Why do butterfly reintroductions often fail?","Most failures trace back to the underlying cause of extinction not being fixed first — if the habitat, host plant, or (as with the Large Blue) a symbiotic partner is still missing or degraded, released butterflies have nowhere to sustain themselves, and the new colony collapses within a few generations.","Photorealistic nature photo, conservationist releasing a captive-bred butterfly from a mesh cage into a wildflower meadow at golden hour, gentle hands open, butterfly mid-flight, hopeful atmosphere, 16:9",{},true,null,"glossary","\u002Fslovar\u002Freintroduktsiya","22.07.2026",1,[145,149,152,156],{"label":146,"path":147,"description":148},"International Red List of Butterflies (IUCN)","\u002Fentsiklopediya\u002Fkrasnaya-kniga-babochek-mira","The conservation status framework that identifies which species need reintroduction efforts",{"label":60,"path":150,"description":151},"\u002Fvidy-babochek\u002Fvidy\u002Fgolubyanka-arion","The best-documented butterfly reintroduction success story, in the UK",{"label":153,"path":154,"description":155},"Range","\u002Fslovar\u002Fareal","The concept of a species' natural distribution that reintroduction aims to restore",{"label":157,"path":158,"description":159},"Endemic","\u002Fslovar\u002Fendemik","Narrow-range endemics are especially reliant on reintroduction after local extinction",{"title":161,"description":162},"Reintroduction — what it is in butterfly conservation, examples","Reintroduction: releasing captive-bred or translocated butterflies to restore an extinct wild population. The Large Blue case, why reintroductions fail or succeed.",{"loc":141},"slovar\u002Freintroduktsiya","bAf4c-Axi--649ybXR5refZP71rb1884U9nvbHIL5bw",[167,173,178,184,189,194,199,204,209,214,219,222,228,233,238,243,248,253,258,263,268,273,278,283,288,293,298,303,308,313,316,317,323,329,334,339,345],{"title":168,"description":169,"path":170,"coverImage":171,"publishedAt":172,"order":139},"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":174,"description":175,"path":176,"coverImage":177,"publishedAt":172,"order":139},"Aposematism","Aposematism is warning coloration in toxic or unpalatable butterflies. Bright colors signal danger to predators and protect the species from being eaten.","\u002Fslovar\u002Faposematizm","\u002Fimages\u002Fslovar\u002Faposematizm.png",{"title":179,"description":180,"path":181,"coverImage":182,"publishedAt":183,"order":139},"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":185,"description":186,"path":187,"coverImage":188,"publishedAt":172,"order":139},"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":190,"description":191,"path":192,"coverImage":193,"publishedAt":172,"order":139},"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":195,"description":196,"path":197,"coverImage":198,"publishedAt":172,"order":139},"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":200,"description":201,"path":202,"coverImage":203,"publishedAt":172,"order":139},"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":205,"description":206,"path":207,"coverImage":208,"publishedAt":172,"order":139},"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":210,"description":211,"path":212,"coverImage":213,"publishedAt":172,"order":139},"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":215,"description":216,"path":217,"coverImage":218,"publishedAt":172,"order":139},"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":157,"description":220,"path":158,"coverImage":221,"publishedAt":172,"order":139},"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.","\u002Fimages\u002Fslovar\u002Fendemik.jpg",{"title":223,"description":224,"path":225,"coverImage":226,"publishedAt":227,"order":139},"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":229,"description":230,"path":231,"coverImage":232,"publishedAt":172,"order":139},"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":234,"description":235,"path":236,"coverImage":237,"publishedAt":172,"order":139},"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":239,"description":240,"path":241,"coverImage":242,"publishedAt":172,"order":139},"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":244,"description":245,"path":246,"coverImage":247,"publishedAt":172,"order":139},"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":249,"description":250,"path":251,"coverImage":252,"publishedAt":172,"order":139},"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":254,"description":255,"path":256,"coverImage":257,"publishedAt":172,"order":139},"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":259,"description":260,"path":261,"coverImage":262,"publishedAt":172,"order":139},"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":264,"description":265,"path":266,"coverImage":267,"publishedAt":172,"order":139},"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":269,"description":270,"path":271,"coverImage":272,"publishedAt":172,"order":139},"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":274,"description":275,"path":276,"coverImage":277,"publishedAt":172,"order":139},"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":279,"description":280,"path":281,"coverImage":282,"publishedAt":172,"order":139},"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":284,"description":285,"path":286,"coverImage":287,"publishedAt":172,"order":139},"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":289,"description":290,"path":291,"coverImage":292,"publishedAt":172,"order":139},"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":294,"description":295,"path":296,"coverImage":297,"publishedAt":172,"order":139},"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":299,"description":300,"path":301,"coverImage":302,"publishedAt":172,"order":139},"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":304,"description":305,"path":306,"coverImage":307,"publishedAt":172,"order":139},"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":309,"description":310,"path":311,"coverImage":312,"publishedAt":172,"order":139},"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":153,"description":314,"path":154,"coverImage":315,"publishedAt":172,"order":139},"Range is the geographic area within which a given butterfly species lives. Ranges may be continuous, fragmented, expanding, or shrinking.","\u002Fimages\u002Fslovar\u002Fareal.png",{"title":5,"description":124,"path":141,"coverImage":123,"publishedAt":142,"order":139},{"title":318,"description":319,"path":320,"coverImage":321,"publishedAt":322,"order":139},"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":324,"description":325,"path":326,"coverImage":327,"publishedAt":328,"order":139},"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":330,"description":331,"path":332,"coverImage":333,"publishedAt":172,"order":139},"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":335,"description":336,"path":337,"coverImage":338,"publishedAt":172,"order":139},"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":340,"description":341,"path":342,"coverImage":343,"publishedAt":344,"order":139},"Toxin Sequestration","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.","\u002Fslovar\u002Fsekvestraciya-toksinov","\u002Fimages\u002Fslovar\u002Fsekvestraciya-toksinov.png","19.08.2026",{"title":346,"description":347,"path":348,"coverImage":349,"publishedAt":350,"order":139},"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",[],[],[354,356,359,360],{"label":146,"path":147,"description":148,"coverImage":355,"latinName":139},"\u002Fimages\u002Fentsiklopediya\u002Fkrasnaya-kniga-babochek-mira.png",{"label":60,"path":150,"description":151,"coverImage":357,"latinName":358},"\u002Fimages\u002Fvidy-babochek\u002Fvidy\u002Fgolubyanka-arion.jpg","Phengaris arion",{"label":153,"path":154,"description":155,"coverImage":315,"latinName":139},{"label":157,"path":158,"description":159,"coverImage":221,"latinName":139},1787125909577]