[{"data":1,"prerenderedAt":355},["ShallowReactive",2],{"glossary_en:\u002Fslovar\u002Fmelanizm":3,"alt-locale:glossary_en:\u002Fslovar\u002Fmelanizm":143,"section-listing:disabled":166,"related-covers:en:":167,"section-listing:glossary_en:\u002Fslovar":168,"related-covers:en:\u002Fslovar\u002Fdimorfizm|\u002Fslovar\u002Faposematizm|\u002Fslovar\u002Fmimikriya":351},{"id":4,"title":5,"body":6,"coverImage":137,"description":138,"extension":139,"faq":140,"imagePrompt":141,"meta":142,"navigation":143,"order":140,"pageType":126,"path":144,"publishedAt":145,"readingMinutes":146,"relatedLinks":147,"seo":160,"sitemap":163,"stem":164,"tags":140,"updatedAt":140,"__hash__":165},"glossary_en\u002Fslovar\u002Fmelanizm.md","Melanism",{"type":7,"value":8,"toc":128},"minimark",[9,14,25,32,36,52,59,62,69,72,76,104,113,120],[10,11,13],"h2",{"id":12},"what-is-melanism","What is melanism",[15,16,17,20,21,24],"p",{},[18,19,5],"strong",{}," is excess accumulation of dark pigment ",[18,22,23],{},"melanin"," in an animal's integument. In butterflies it appears as darkening of the wings up to nearly black coloration.",[15,26,27,28,31],{},"The opposite is ",[18,29,30],{},"albinism"," (lack of pigment). Both occur as inherited mutations and in response to environmental conditions.",[10,33,35],{"id":34},"industrial-melanism","Industrial melanism",[15,37,38,39,42,43,47,48,51],{},"The most famous example of melanism in entomology is the ",[18,40,41],{},"peppered moth"," (",[44,45,46],"em",{},"Biston betularia",") and ",[18,49,50],{},"industrial melanism",".",[15,53,54,55,58],{},"Before the Industrial Revolution in England (18th century), most peppered moths had a white speckled pattern camouflaging them on light birch bark. The dark melanic form ",[44,56,57],{},"f. carbonaria"," was rare.",[15,60,61],{},"As industry developed, tree bark near cities became soot-covered and dark. On a dark background light moths were conspicuous to birds; dark ones were not. By the late 19th century the melanic form made up to 98% of the population in industrial areas.",[15,63,64,65,68],{},"This became a ",[18,66,67],{},"textbook example of natural selection",": environmental change → change in selective pressure → rapid shift in allele frequencies in the population.",[15,70,71],{},"After clean-air laws in the 1950s–1970s birch bark lightened again, and the share of the dark form dropped.",[10,73,75],{"id":74},"adaptive-and-non-adaptive-melanism","Adaptive and non-adaptive melanism",[77,78,79,86,92,98],"ul",{},[80,81,82,85],"li",{},[18,83,84],{},"Adaptive melanism"," — the dark form improves survival (camouflage on dark background, as in the peppered moth). Maintained by natural selection.",[80,87,88,91],{},[18,89,90],{},"Sexual melanism"," — dark male coloration in some species attracts females (sexual selection).",[80,93,94,97],{},[18,95,96],{},"Melanism in mountain species"," — dark coloration absorbs more solar heat, important in cold climates. Typical of high-mountain butterflies (some fritillaries, Apollos).",[80,99,100,103],{},[18,101,102],{},"Neutral melanism"," — the dark form gives neither advantage nor disadvantage; persists in the population by chance (genetic drift).",[10,105,107,108],{"id":106},"melanism-and-dimorphism","Melanism and ",[109,110,112],"a",{"href":111},"\u002Fen\u002Fslovar\u002Fdimorfizm","dimorphism",[15,114,115,116,119],{},"Melanic forms are a special case of ",[109,117,118],{"href":111},"polymorphism",": light and dark forms coexist in a population. The proportion of each is set by selective pressure, which can change.",[15,121,122,123,127],{},"The full glossary is in the ",[109,124,126],{"href":125},"\u002Fen\u002Fslovar","glossary"," section.",{"title":129,"searchDepth":130,"depth":130,"links":131},"",2,[132,133,134,135],{"id":12,"depth":130,"text":13},{"id":34,"depth":130,"text":35},{"id":74,"depth":130,"text":75},{"id":106,"depth":130,"text":136},"Melanism and dimorphism","\u002Fimages\u002Fslovar\u002Fmelanizm.jpg","Melanism is excess accumulation of dark pigment melanin, causing darkened coloration. Industrial melanism in the peppered moth is a classic evolution example.","md",null,"Photorealistic nature photo, two peppered moths on birch bark — one pale speckled form and one dark melanic form, dramatic comparison, natural lighting, 16:9",{},true,"\u002Fslovar\u002Fmelanizm","01.05.2026",1,[148,152,156],{"label":149,"path":150,"description":151},"Dimorphism","\u002Fslovar\u002Fdimorfizm","Different forms within one species",{"label":153,"path":154,"description":155},"Aposematism","\u002Fslovar\u002Faposematizm","Warning coloration",{"label":157,"path":158,"description":159},"Mimicry","\u002Fslovar\u002Fmimikriya","Protective resemblance",{"title":161,"description":162},"Melanism in butterflies — dark form, industrial melanism","Melanism in butterflies: what it is, causes of darkened coloration, peppered moth industrial melanism as an example of natural selection.",{"loc":144},"slovar\u002Fmelanizm","SHnB1YaaXJ6I8BYGGiGNIdQZDAlnGlNTLm6wK1GY4mI",[],[],[169,174,177,183,188,193,198,203,208,211,216,221,227,232,237,242,247,248,253,258,261,266,271,276,281,286,291,296,301,306,311,317,323,329,334,339,345],{"title":170,"description":171,"path":172,"coverImage":173,"publishedAt":145,"order":140},"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",{"title":153,"description":175,"path":154,"coverImage":176,"publishedAt":145,"order":140},"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":178,"description":179,"path":180,"coverImage":181,"publishedAt":182,"order":140},"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":184,"description":185,"path":186,"coverImage":187,"publishedAt":145,"order":140},"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":189,"description":190,"path":191,"coverImage":192,"publishedAt":145,"order":140},"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":194,"description":195,"path":196,"coverImage":197,"publishedAt":145,"order":140},"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":199,"description":200,"path":201,"coverImage":202,"publishedAt":145,"order":140},"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":204,"description":205,"path":206,"coverImage":207,"publishedAt":145,"order":140},"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":149,"description":209,"path":150,"coverImage":210,"publishedAt":145,"order":140},"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.","\u002Fimages\u002Fslovar\u002Fdimorfizm.jpg",{"title":212,"description":213,"path":214,"coverImage":215,"publishedAt":145,"order":140},"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":217,"description":218,"path":219,"coverImage":220,"publishedAt":145,"order":140},"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":222,"description":223,"path":224,"coverImage":225,"publishedAt":226,"order":140},"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":228,"description":229,"path":230,"coverImage":231,"publishedAt":145,"order":140},"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":233,"description":234,"path":235,"coverImage":236,"publishedAt":145,"order":140},"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":238,"description":239,"path":240,"coverImage":241,"publishedAt":145,"order":140},"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":243,"description":244,"path":245,"coverImage":246,"publishedAt":145,"order":140},"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":5,"description":138,"path":144,"coverImage":137,"publishedAt":145,"order":140},{"title":249,"description":250,"path":251,"coverImage":252,"publishedAt":145,"order":140},"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":254,"description":255,"path":256,"coverImage":257,"publishedAt":145,"order":140},"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":157,"description":259,"path":158,"coverImage":260,"publishedAt":145,"order":140},"Mimicry in butterflies is resemblance to other species or objects for protection from predators. Batesian and Müllerian mimicry, with examples.","\u002Fimages\u002Fslovar\u002Fmimikriya.jpg",{"title":262,"description":263,"path":264,"coverImage":265,"publishedAt":145,"order":140},"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":267,"description":268,"path":269,"coverImage":270,"publishedAt":145,"order":140},"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":272,"description":273,"path":274,"coverImage":275,"publishedAt":145,"order":140},"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":277,"description":278,"path":279,"coverImage":280,"publishedAt":145,"order":140},"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":282,"description":283,"path":284,"coverImage":285,"publishedAt":145,"order":140},"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":287,"description":288,"path":289,"coverImage":290,"publishedAt":145,"order":140},"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":292,"description":293,"path":294,"coverImage":295,"publishedAt":145,"order":140},"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":297,"description":298,"path":299,"coverImage":300,"publishedAt":145,"order":140},"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":302,"description":303,"path":304,"coverImage":305,"publishedAt":145,"order":140},"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":307,"description":308,"path":309,"coverImage":310,"publishedAt":145,"order":140},"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":312,"description":313,"path":314,"coverImage":315,"publishedAt":316,"order":140},"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":318,"description":319,"path":320,"coverImage":321,"publishedAt":322,"order":140},"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":140},"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":145,"order":140},"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":145,"order":140},"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":140},"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":140},"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",[352,353,354],{"label":149,"path":150,"description":151,"coverImage":210,"latinName":140},{"label":153,"path":154,"description":155,"coverImage":176,"latinName":140},{"label":157,"path":158,"description":159,"coverImage":260,"latinName":140},1787125907713]