Hvorfor tiltrekkes flua av lys?

Posted on by Beetlebee

Et mangfold av fluer

Det finnes nesten tusen forskjellige arter som ligner på det vi kaller husflue, Musca domestica, og mange av de finns inne i husene våre. Det er forsket en del på hvorfor insekter tiltrekkes av lyset, og det kan være flere ulike forklaringer på det, alt etter hvilke arter det er snakk om.

En svært vanlig art er loftsflua, Pollenia rudis, som egentlig er en spyflue. Loftsflua overvintrer ofte innendørs, og er derfor den vanligste som dukker opp om våren når vi fyrer opp i hytta, eller varmer opp et rom. På bygda der det er husdyr er mangfoldet av møkkfluer (Muscidae) stort. Overalt der vi bor er det en rekke forskjellige fluearter som flyr inn i husene.

Noen er dagaktive, og noen er nattaktive. Men felles for dem er at de gjerne blir aktive når vi slår på lyset i rommet når det er mørkt. Svaret mitt blir derfor ganske generelt og gjelder for alle insekter som tiltrekkes av lyset.

Orientering mot lyset

Den viktigste forklaringen er at mange insekter bruker månen til å orientere seg etter i terrenget om natta. Dette virker slik at dersom ei flue ønsker å fly rett fremover, vil den ha månen i en bestemt vinkel i forhold til kroppen.

Dersom den kommer i nærheten av en kunstig lyskilde, kan den bli lurt til å tro at det er månen, og den vil derfor bøye av flukten av inn mot lyskilden for å kunne opprettholde riktig vinkel. Vi ser derfor ofte at insekter som tiltrekkes av kunstig lys flyr i en spiral rundt lyskilden.

Andre forklaringer

Andre forklaringer på at insekter tiltrekkes av lys om natta kan være at de søker mot lyset for å kunne bruke synssansen sin, eller at de tror det er en blomst dersom det er snakk om blomsterbesøkende arter. Når noen av fluene har blitt tiltrukket av lyset kan det også virke selvforsterkende fordi insekter av samme art tiltrekker hverandre for paring.

Jeg svarer på spørsmål for NRK Newton:

http://nrksuper.no/super/newton/2014/03/11/hvorfor-tiltrekkes-fluer-av-lyset/

Foto: Fra lyslokking av insekter i Papua New Guinea. Foto: Frode Ødegaard.

1,416 thoughts on “Hvorfor tiltrekkes flua av lys?”

  3. BTC may be the latest or last chance to get rich in this era. It will reach $200000 next year or the next year.

    BTC has increased 20 times in the last year, and other coins have increased 800 times!!!

    Think about only $2 a few years ago. Come to the world’s largest and safest virtual currency exchange Binance to Get free rewards. Don’t miss the most important opportunity in life!!!

    https://hi.switchy.io/91xl

    Reply

  7. Maintenant, la technologie de positionnement est largement utilisée. De nombreuses voitures et téléphones portables ont des fonctions de positionnement, et il existe également de nombreuses applications de positionnement. Lorsque votre téléphone est perdu, vous pouvez utiliser ces outils pour lancer rapidement des demandes de localisation. Comprendre comment localiser l’emplacement du téléphone, comment localiser le téléphone après sa perte?

    Reply

  307. Hello!

    This post was created with XRumer 23 StrongAI.

    Good luck :)

    Reply

  309. Hello.

    This post was created with XRumer 23 StrongAI.

    Good luck :)

    Reply

  375. Welcome to our portal, your primary source for all the freshest updates and developments on the press landscape in the United Kingdom. Whether you’re interested in telecasts, audio broadcasting, publishing, or internet media, we present comprehensive coverage that keeps you aware about the key changes and patterns. From just-in reports to thorough analyses, our team of veteran journalists and industry analysts work relentlessly to bring you the most reliable and recent data – https://faberfindsblog.co.uk/art/hartpury-universitys-bold-step-into-wildlife-conservation.html
    In conjunction to reports, we offer insightful features and opinion articles that delve into the nuances of the press industry. Our articles cover a variety of topics, including regulatory alterations, media control, and the impact of new innovations. We also emphasize the accomplishments and difficulties faced by media professionals, delivering a platform for voices from all over the industry to be recognized and acknowledged.
    Stay in touch with the pulse of the UK media scene through our regularly updated content. Whether you’re a media professional, a student, or simply a media enthusiast, our site is designed to appeal to your interests and wants. Become part of our growing community of readers and confirm you’re always in the know about the dynamic and ever-evolving world of media in the United Kingdom.

    Reply

  376. Welcome to our site, your premier source for all the freshest stories and coverage on the broadcasting landscape in the United Kingdom. Whether you’re fascinated in broadcasting, radio, publishing, or web-based media, we provide complete coverage that keeps you informed about the key advancements and trends. From up-to-the-minute news stories to detailed analyses, our team of skilled journalists and industry professionals work diligently to bring you the most reliable and recent information – https://thehobbiesandinterestsregister.co.uk/art/greenwich-peninsulas-urban-village-fete-returns.html
    In addition to to news, we deliver perceptive features and opinion pieces that delve into the details of the media industry. Our features cover a broad spectrum of topics, including regulatory shifts, media possession, and the impact of new technologies. We also highlight the achievements and challenges faced by media professionals, offering a platform for voices from through the industry to be heard and respected.
    Stay engaged with the pulse of the UK media scene through our regularly updated content. Whether you’re a media professional, a student, or simply a media enthusiast, our site is designed to accommodate to your likes and needs. Become part of our growing community of readers and confirm you’re always in the know about the dynamic and ever-evolving world of media in the United Kingdom.

    Reply

  378. Очистка воды играет большое значение в обеспечении оптимальной работы промышленного оборудования – https://machinetechsolutions.ru/multiblok-dungs-mb-zrdle-415-b01-s52-2/. Метод предполагает кондиционирование и настройку воды для удаления ненужных элементов, таких как растворённые соли, органика и бактерии. Это необходимо для избежания разрушения, наслоений и других проблем, которые могут снизить производительность машин и сократить период эксплуатации. Применение современной водоподготовки даёт возможность не только обеспечить надёжность и долговечность техники, но и минимизировать издержки на обслуживание и техническое обслуживание.

    Текущие системы водоподготовки включают в себя большое количество этапов обработки и аппаратов. Среди них особо выделяются механические фильтры, нужные для удаления крупных частиц, системы осмоса, которые эффективно устраняют солевые соединения, и УФ-установки, очищающие воду от бактерий. Также важно отметить химические вещества, используемые для корректировки pH и предотвращения коррозии. Применение автоматизированных систем даёт возможность значительно улучшить результативность и точность процесса водоподготовки, что крайне важно в условиях большого производства.

    Качественная водоподготовка положительно сказывается на экологическое состояние, минимизируя выбросы токсичных веществ в природную среду. Использование современных технологий и устройств позволяет сократить потребление воды и её загрязнение, что соотносится с целями устойчивого развития. Производственные компании, обращающие внимание на водоподготовку, не только улучшают свои результаты, но и проявляют ответственность к окружающей среде. В результате, правильная организация процесса водоподготовки является важным конкурентным преимуществом и вложением в устойчивое развитие, как для организаций, так и для сообщества.

    Reply

  379. Кондиционирование воды играет значимую роль в сохранении функциональности технологического оборудования – https://vodoclean.ru/jeffektivnaja-dizelnaja-teplovaja-pushka-denzel.html. Процедура состоит из кондиционирование и регулирование воды для исключения загрязнений, таких как солевые соединения, органические соединения и микробы. Это необходимо для защиты от окисления, наслоений и иных проблем, которые могут уменьшить производительность машин и сократить период эксплуатации. Внедрение эффективной водоподготовки обеспечивает не только улучшить надёжность и срок эксплуатации оборудования, но и уменьшить издержки на обслуживание и ремонт.

    Актуальные системы водоподготовки состоят из большое количество технологических процессов и устройств. Среди них следует отметить фильтрационные установки, предназначенные для удаления крупных элементов, системы осмоса, которые полностью удаляют солевые элементы, и ультрафиолетовые системы, дезинфицирующие воду. Также не последнюю роль играют химические компоненты, используемые для корректировки pH и предотвращения коррозии. Внедрение автоматизированных систем управления даёт возможность значительно улучшить результативность и точность процесса очистки воды, что чрезвычайно важно в условиях масштабного промышленного производства.

    Современная водоподготовка положительно сказывается на экологическое состояние, уменьшая количество выбросов загрязняющих веществ в атмосферу. Внедрение современных технологий и техники минимизирует расход воды и её загрязнение, что совпадает с целями устойчивого развития. Промышленные предприятия, обращающие внимание на водоподготовку, не только повышают свою производительность, но и проявляют ответственность к природным ресурсам. В результате, правильная организация процесса водоподготовки служит конкурентным преимуществом и вложением в устойчивое развитие, как для производств, так и для общества в целом.

    Reply

  380. In many ways, the money line is the most straightforward bet in the NBA, and it is simply a wager on one of the teams to win. Unlike the point spread and the totals, the odds will vary here, meaning lower odds on the favored team, and higher odds on the underdog. Here is how the point spread bet above might look in the money line market. There are many great NBA betting sites available for players, but the very best of them is BetOnline. They offer excellent NBA betting markets and odds, as well as some great promotions for players. Bovada is happy to let its players win with Bitcoins. When you sign up and make our first deposit with Bitcoins, Bovada will give you a 125% matching bonus. This is 25% more than the bonus you’d receive using other deposit methods. According to oddsmakers at Bovada, the Nets are the favorites to win the 2022 NBA Finals. The Nets have not appeared in an NBA Finals series since the 2002-03 season. Brooklyn lost that series in six games against the San Antonio Spurs. For a reminder, the Nets finished 49-33 (.598) in the 2002-03 season.
    https://studybible.co.kr/bbs/board.php?bo_table=free&wr_id=39401
    On this page I’ve recommended a betting site, outlined the odds for Covington vs Masvidal, and provided a straight forward three step guide you can follow to bet on UFC 272 online. Covington is 16-3 in his career, including 3-2 in his last five fights. He is coming off a unanimous decision loss against Kamaru Usman in November of last year. Covington won by TKO against Tyron Woodley in September of 2020, won by unanimous decision against Robbie Lawler in August of 2019, won by unanimous decision against Rafael dos Anjos in June of 2018, and lost by TKO against Kamaru Usman in December of 2019. Select Year Holland, meanwhile, is a -250 favorite to clean up, but isn’t attracting much interest from bettors. For more UFC 287 coverage, check out how the public’s betting tonight’s bouts here.

    Reply

  381. Correct score betting is one of the most challenging forms of football betting, but it can also be one of the most rewarding. Correct score betting involves predicting the exact score of a football match, which can be difficult given the many variables that can affect the outcome of a game. Here you will find our free correct score predictions and tips for soccer games being played tomorrow. Moreover, a 2:1 or 1:2 score in a match is highly probable, especially when two evenly matched teams play, or teams favor an aggressive attacking style. For these popular scores in football (1:1, 0:1, 1:0, 2:1, 1:2), the odds typically range from 8 to 16%. While matches can end with a hockey score (4:3) or a tennis score (6:1), these are less likely. However, if you make such a bet and it wins, you could earn from 100x to 200x your stake.
    https://forum.bug.hr/forum/user/mousnabisid1983/140837.aspx
    NEW YORK, NY – Sportradar Group AG (NASDAQ: SRAD), the leading global sports technology company creating immersive experiences for sports fans and bettors, today announced that its subsidiary Sportradar AG has received a gaming-related supplier registration for online mobile wagering from the Alcohol and Gaming Commission of Ontario. The Canadian province of Ontario launched legalized sports betting MORE FROM THE L.A. TIMES Comparing odds at the best online sportsbooks is important before placing any bet. Since each online betting site has its own unique odds, there are going to be places where your wager will be more profitable. That’s why it’s wise to sign up for multiple online sportsbooks. This way, you can take advantage of the different lines, odds, and promotions available — choosing the best ones for you.

    Reply

  384. Aqui, você encontra desde jogos de cassino clássicos a game shows ao vivo alucinantes, super dinâmicos, divertidos, que proporcionam ao jogador uma experiência maravilhosa. É como ter seu próprio cassino em casa. Melhor Site Para Jogar Wild Leprechaun Quais cassinos oferecem rodadas grátis ou promoções por big bass splash – O jogo se adaptará perfeitamente à maioria dos sistemas operacionais como IOS, mas já foi um dos maiores ao redor. Os métodos de saque disponíveis podem variar de acordo com o cassino, decorado com cores rosa e champanhe brilhantes. Que tal jogar mais um jogo assim como Big Bass Bonanza? Aqui na KTO oferecemos todos os jogos da série. Dê uma chance para Big Bass Splash! No entanto, até um mês. As populares máquinas caça-níqueis de vídeo de hoje têm suas raízes nas máquinas caça-níqueis mecânicas de 3 cilindros, seja no celular ou no desktop. As chances de acertar o jackpot variam, mas alguns se destacam acima do resto. Big Bass Splash caça-níqueis 3d com tema peruano então tente a sua sorte nas mesas de apostas altas, outra crise mundial e sua conta pode ser esgotada da noite para o dia. Estes são Blackjack americano e Blackjack Europeu, que são bônus que você recebe quando faz um depósito em sua conta.
    https://mavenanalytics.io/profile/anna-white/206310175
    Este produto não está disponível no seu idioma. Confira a lista de idiomas oferecidos antes de comprar. Mostrar apenas imagens que incluam um prompt Edital nº 94 2024 – Processo Seletivo Simplificado de Cursos de Graduação – Campus Januária- Inscrições: até 28 03 2024 (17h) Muitas vezes, os provedores de jogos acabaram de lançar um certo jogo de slot e como promoção, eles oferecem estes jogos aos sites de cassino que decidem então focar seus giros grátis nos novos lançamentos do mercado. Essa estratégia é uma maneira bastante inteligente de se promover o novo título e atrair, ao mesmo tempo, fãs e jogadores interessados em jogar tais títulos recém-lançados. Porém, no ano de 2004, o Supremo Tribunal Federal decidiu que a regulamentação de jogos dos estados seria válida somente para jogos de loteria. O que provocou o fechamento das casas de vídeo bingo e slots.

    Reply

  385. Start trading on a powerful yet intuitive platform engineered for your success Most Indian forex traders use foreign forex brokers who accept traders residing in India. Indian traders are, thus, unable to access other major or exotic currency pairings on the global forex market. The purpose of the laws is to stop money laundering, currency manipulation, and capital flight. Therefore, they restrict the options and prospects of Indian forex traders. Most international Forex brokers in India operate through branch offices, Introducing Brokers, or through affiliates without actually being regulated by the SEBI or any other organization. These brokers offer their services illegally without any consent from the authorities, which prevent the Government from tracking their activities. A majority of traders typically lose their money in the markets due to a lack of knowledge and due to scam and fraudulent activities from the brokers’ part. Therefore, Forex scams and other financial malpractices are highly rampant in the country, which has forced the Government to intervene and severely limit the freedom enjoyed by Forex brokers.
    https://rciims.mona.uwi.edu/user/chupbicondthe1970
    The main benefit of using limit orders is that traders can set a specific price point and guarantee that their order is executed at that price or better. This eliminates the risk of placing a market order and having the trade filled at an unfavorable price. It also helps to protect against slippage, which is the difference between the expected price of a trade and the price at which it is filled. This is an order to lock in your profits. You set a Take Profit order at a specific price level above or below the current price. If you’re long or buying a currency (you’ve bought it expecting the price to rise), you set the Take Profit above the current price. If you’re short or selling (you’ve sold it expecting the price to fall), you set it below the current price. When the market hits this level, your trade is automatically closed, and your profit is locked in.

    Reply

  386. Radio advertising produces £7.70 revenue ROI for every one pound spent. At WHOU we offer some free options for radio advertising. If you belong to a non-profit organization you can get your event posted on our Community Calendar for free. To add your event to our calendar you can fax it to207-521-0056 or email it to We will run your announcement twice a day during our Community Calendar during the week leading up to your event. Radio advertising may have influenced you whether you realized it or not. After hearing a radio ad, many of us have purchased a service or product at least once, consciously or subconsciously. That is why more and more companies are turning to radio advertising to promote their products or brands. Looking for sample radio spots? Check out my “samples” page… Sample Radio Ads Commercials  Spots
    https://vbl.co.th/en/72-entertainment-and-cold-things-to-can-in-minecraft-2/
    A 43-year-old woman died when she her vehicle was struck by a train on Saturday, according to the Volusia County Sheriff’s Office. This page will be updated every week day after 11:30 a.m. with the posting of the previous day’s reports. The weekend reports will be posted every Monday afternoon. © 2023 Volusia Sheriff’s Office. Privacy Website Accessibility West Volusia: 386-736-5961 © 2023 Volusia Sheriff’s Office. West Volusia: 386-736-5961 © 2023 Volusia Sheriff’s Office. Privacy Website Accessibility Click on one of the Districts below to read a brief synopsis of recent incidents. A boat with 10 occupants on it was rescued from Lake George on Saturday, according to the Volusia County Sheriff’s Office. Sheriff Michael J. Chitwood The Volusia County Sheriff’s Office said the children shot at the deputies for more than half an hour Tuesday night, before the deputies returned fire.

    Reply

  456. Il y a quelques semaines, le groupe Casino annonçait avoir conclu plusieurs accords avec Auchan et Intermarché pour céder plusieurs centaines d’hypermarchés et supermarchés. 98 passeraient sous enseigne Auchan, et 190 chez le groupe Mousquetaire Intermarché. Pour contacter ce magasin vous pouvez appeler le 0325721700. Inscrivez-vous à notre newsletter pour rester informé des nouvelles offres from Casino Supermarchés et être le premier à connaître les meilleures offres internet. Pendant que vous attendez, vous pouvez consulter les derniers catalogues de la catégorie Supermarchés comme la brochure Lidl “Profitez des petits prix Lidl, rendez-vous dans nos supermarchés.” valable du du 9 9 au au 17 9. supercasino.fr Lundi : 10h – 18h 2  Après 20 ans d’absence, Air France relancera cet hiver sa liaison entre Paris et cette destination très prisée
    https://redehumanizasus.net/usuario/adrian-gandre/
    Non. Vous n’avez pas besoin d’indiquer vos coordonnées ou de créer un compte sur un casino pour profiter de ses jeux gratuits. Les machines à sous gratuites sont accessibles sans engagement : vous pouvez donc passer d’un casino à l’autre. Lorsque vous choisissez l’une de nos machines à sous, toutes gratuites et sans inscription nécessaire, faites attention, car il y a plus il y a des enjeux différents. Certains internautes préfèrent des machines simples, les plus minimalistes possibles, car elles ont plus de chances de payer et ne sont pas des casse-têtes. Tandis que d’autres préfèrent prendre des risques avec d’énormes jackpots en jeu et plus de fonctions. De plus, vérifier le taux de renversement (RTP) de la machine est d’une grande importance. L’opportunité de jouer gratuitement saura vous conseiller au mieux.

    Reply

  481. пансионат для пожилых в крыму отзывы [url=xn—–3-43da3arnf4adrboggk3ay6e3gtd.xn--p1ai]пансионат для пожилых в крыму отзывы[/url] .

    Reply

  485. купить аттестат о среднем образовании в москве [url=https://arusak-diploms.ru/]arusak-diploms.ru[/url] .

    Reply

  486. купить диплом нового образца в омске [url=https://russa-diploms.ru/]russa-diploms.ru[/url] .

    Reply

  569. где купить диплом о среднем профессиональном [url=https://orik-diploms.ru/]orik-diploms.ru[/url] .

    Reply

  571. купить проверенный диплом о высшем образовании [url=https://russa-diploms.ru/]russa-diploms.ru[/url] .

    Reply

  589. можно ли сейчас купить диплом [url=https://server-diploms.ru/]можно ли сейчас купить диплом[/url] .

    Reply

  599. сколько стоит купить диплом техникума [url=https://landik-diploms.ru/]landik-diploms.ru[/url] .

    Reply

  688. где купить дипломы вуза [url=https://prema-diploms.ru/]где купить дипломы вуза[/url] .

    Reply

  690. купить диплом специалиста в екатеринбурге [url=https://arusak-diploms.ru/]arusak-diploms.ru[/url] .

    Reply

  709. купить диплом о среднем образовании в севастополе [url=https://landik-diploms.ru/]landik-diploms.ru[/url] .

    Reply

  710. как вызвать наркологическую скорую помощь в москве [url=www.skoraya-narkologicheskaya-pomoshch-moskva13.ru]как вызвать наркологическую скорую помощь в москве[/url] .

    Reply

  715. как узнать поддельный диплом или нет [url=https://server-diploms.ru/]как узнать поддельный диплом или нет[/url] .

    Reply

Leave a Reply

Your email address will not be published. Required fields are marked *