{"id":91185,"date":"2024-12-01T17:52:05","date_gmt":"2024-12-01T17:52:05","guid":{"rendered":"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3"},"modified":"2024-12-01T18:01:46","modified_gmt":"2024-12-01T18:01:46","slug":"artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3","title":{"rendered":"Artificial Light Across Coastlines Are Attracting Young Fish, And Their Predators"},"content":{"rendered":"

Africa-Press – Rwanda. <\/strong><\/span>While it has long been understood that light pollution disrupts natural wildlife patterns, contributes to an increase in carbon dioxide (CO2) and even disrupts the sleep cycles of humans, it also has an adverse effect on marine ecosystems.<\/p>\n

A new study has shown that artificial light at night (ALAN) across coastlines is acting as a predatory trap for young fish.<\/p>\n

According to a satellite study conducted about a decade ago, nearly a quarter of the world\u2019s coastline is artificially lit – although that amount could certainly be more now, explained Jules Schligler, the lead author of the study and a Ph.D. student at CRIOBE Laboratory (Centre de Recherches Insulaires et Observatoire de l’Environnement) in Moorea, French Polynesia.<\/p>\n

ALAN along the coast could belong to a range of human-caused activities including the use of electrical lights along roads, factories, residences and resorts near bodies of water.<\/b><\/p>\n

“ALAN is everywhere and marine wildlife is not exempt from its effects,” says Schligler. “A quarter of the world coastline is impacted and this level is increasing every year.”<\/p>\n

For his test, Schligler focused on two dominant coral reef damselfish native to French Polynesia, the yellowtail dascyllus and the blue-green chromis. In testing 48 corals that were split into two treatments, Schligler found that light attracts fish larvae, and that their test sites that used artificial light recruited 2 – 3 times as many fish as naturally lit environments.<\/p>\n

\u201cWe found that the coral with the light attracted two to three times more fish compared to the naturally lit control site,\u201d Schligler said. \u201cThe coral with the [artificial] light is a bad environment for the larval fish because there are more predators, opportunistic fish passing by, that ate them.\u201d<\/p>\n

\u201cWe can only extrapolate to a certain point but our findings, and other tests we did on crab and shrimp, generally indicate that marine animals are attracted to artificial light,\u201d he said. Schligler also explained that while artificial light could appear to benefit predator fish, more research would be needed to prove that to be the case.<\/p>\n

\u201cIt could be bad for their sleep, or they could eat too much, we don\u2019t yet know,\u201d he explained.<\/p>\n

“ALAN has produced an ecological trap where these fish, misled by human activity, now prefer habitats where their fitness will be lower,” says Schligler. “In other words, ALAN has the potential to attract organisms to a less suitable environment, generating a peculiar anthropogenic stressor.”<\/p>\n

“To better understand fish stock replenishment and conservation, it is crucial to take into account as many factors as we can, such as the rarely considered effects of light pollution,\u201d he added.<\/p>\n

For More News And Analysis About Rwanda<\/span> Follow Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Rwanda. While it has long been understood that light pollution disrupts natural wildlife patterns, contributes to an increase in carbon dioxide (CO2) and even disrupts the sleep cycles of humans, it also has an adverse effect on marine ecosystems. A new study has shown that artificial light at night (ALAN) across coastlines is […]<\/p>\n","protected":false},"author":84,"featured_media":91184,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,31],"tags":[758],"class_list":["post-91185","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all-news","category-miscellaneous","tag-rwanda"],"yoast_head":"\nArtificial Light Across Coastlines Are Attracting Young Fish, And Their Predators - Rwanda<\/title>\n<meta name=\"description\" content=\"While it has long been understood that light pollution disrupts natural wildlife patterns, contributes to an increase in ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Artificial Light Across Coastlines Are Attracting Young Fish, And Their Predators\" \/>\n<meta property=\"og:description\" content=\"While it has long been understood that light pollution disrupts natural wildlife patterns, contributes to an increase in ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3\" \/>\n<meta property=\"og:site_name\" content=\"Rwanda\" \/>\n<meta property=\"article:published_time\" content=\"2024-12-01T17:52:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-01T18:01:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/rwanda\/sites\/23\/2024\/12\/sm_1733063415.157152.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1387\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditoren\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditoren\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3\"},\"author\":{\"name\":\"cfeditoren\",\"@id\":\"https:\/\/www.africa-press.net\/rwanda\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb\"},\"headline\":\"Artificial Light Across Coastlines Are Attracting Young Fish, And Their Predators\",\"datePublished\":\"2024-12-01T17:52:05+00:00\",\"dateModified\":\"2024-12-01T18:01:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3\"},\"wordCount\":460,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/rwanda\/sites\/23\/2024\/12\/sm_1733063415.157152.jpg\",\"keywords\":[\"Rwanda\"],\"articleSection\":[\"all news\",\"Miscellaneous\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3\",\"url\":\"https:\/\/www.africa-press.net\/rwanda\/all-news\/artificial-light-across-coastlines-are-attracting-young-fish-and-their-predators-3\",\"name\":\"Artificial Light Across Coastlines Are Attracting Young Fish, And Their Predators - 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