{"id":39161,"date":"2025-07-31T00:01:47","date_gmt":"2025-07-31T04:01:47","guid":{"rendered":"https:\/\/beyondpesticides.org\/dailynewsblog\/?p=39161"},"modified":"2025-07-31T11:20:10","modified_gmt":"2025-07-31T15:20:10","slug":"sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study","status":"publish","type":"post","link":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/","title":{"rendered":"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study"},"content":{"rendered":"

(Beyond Pesticides<\/em>, July 31, 2025) A study published in Environmental Advances<\/em><\/a> finds that hundreds of honeybee hives across central and northern Italy are contaminated with various pesticides and their metabolites, including glyphosate<\/a> and fosetyl<\/a>.\u00a0<\/p>\n

\u201cThere was no significant difference in glyphosate presence between dead\/dying and live bees, suggesting chronic exposure rather than acute toxicity. However, higher pesticide concentrations in dead\/dying bees indicate potential sublethal effects contributing to colony distress,\u201d according to the authors. This peer-reviewed study builds on the mounting evidence outlined in the literature connecting pesticide residues to nontarget harm to pollinators and other insects and animals that are critical to biodiversity.<\/p>\n

Background and Methodology<\/strong><\/h2>\n

\u201cThe primary objectives of this study were to develop and validate a reliable, sensitive method for analyzing polar pesticides [highly soluble in water] in honeybees and to investigate polar pesticides residue levels in honeybees across northern and central Italy,\u201d say the researchers of this study, who conduct research at the Experimental Zooprophylactic Institute of Lombardy and Emilia Romagna \u201cBruno Ubertini”, Experimental Zooprophylactic Institute of Umbria and Marche \u201cTogo Rosati\u201d, and Experimental Zooprophylactic Institute of Lazio and Tuscany “M. Aleandri.”<\/p>\n

314 honeybee samples were gathered voluntarily from local beekeepers in six regions of northern and central Italy\u2014Lombardy, Emilia Romagna, Lazio, Tuscany, Umbria, and Marche. Two sample types\u2014dead or dying bees and live bees from healthy hives\u2014enable a comparison of contamination levels based on bee mortality and sublethal effects. Four pesticides and their associated metabolites are the focus of this study. They include the weed killer glyphosate (its major metabolite\/breakdown chemical AMPA [Aminomethylphosphonic acid], N-acetyl-AMPA, and N-acetyl-glyphosate), fosetyl (Phosphonic acid), glufosinate (NAG [N-acetyl-glufosinate] and MPPA [3-Methylphosphonicpropionic acid] and ethephon (HEPA [Ethephon hydroxy]). These pesticides were targeted because they are considered polar pesticides, meaning that they are more challenging to analyze due to their small molecular size and water solubility.<\/p>\n

There were two primary analytical tools, LC-MS\/MS (Liquid Chromatography-Tandem Mass Spectrometry) and IC-HRMS (Ion Chromatography-High Resolution Mass Spectrometry), used to address this obstacle. The first tool was used in Umbria, Marche, Lazio, and Tuscany to identify the herbicides glyphosate, ethephon, glufosinate, fosetyl, and their metabolites (AMPA, N-acetyl-AMPA, HEPA, MPPA, NAG). Meanwhile, the second tool was used in Lombardy and Emilia Romagna and can also identify N-acetyl-glyphosate and phosphonic acid. Financial support was provided by the Italian Ministry of Health, but otherwise the authors declared \u201cno known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.\u201d<\/p>\n

Results and Discussion<\/strong><\/h2>\n

The researchers identified eight notable findings in developing their research.<\/p>\n

    \n
  1. Glyphosate was found in 33.4 percent of samples, making it the most frequently detected pesticide in this study;<\/li>\n
  2. There was no significant distinction between glyphosate residues in dead\/dying bees and healthy, live beehives; however, sublethal effects are possible, considering that average concentrations were higher in the former group;<\/li>\n
  3. Fosetyl contamination was localized to Emilia Romagna and some in Lombardy, with 85 percent of fosetyl-positive samples also containing glyphosate;<\/li>\n
  4. Glufosinate and ethephon were never detected in the samples;<\/li>\n
  5. There was co-occurrence of multiple pesticides, including 16 percent of all samples containing both glyphosate and fosetyl;<\/li>\n
  6. Higher pesticide detection correlated with herbicide-intensive regions;<\/li>\n
  7. This study validated the dual methodology of LC-MS\/MS and IC-HRMS since it was the first large-scale application of these methods in Italy; and,<\/li>\n
  8. The health of honeybees can be considered an effective bioindicator when it comes to ecological and human health.<\/li>\n<\/ol>\n

    For additional information and analysis, please consider reading the Results and Discussion sections.<\/p>\n

    Previous Research<\/strong><\/h2>\n

    A recently published study in Royal Society Open Science<\/em> shows intraspecific differences (between individuals of a species) in wild bumblebees<\/a> (Bombus vosnesenskii<\/em>) exposed to glyphosate, a fungicide (tebuconazole<\/a>), and an insecticide (imidacloprid<\/a>), with gut microbiome health as a factor. In collecting 175 individuals of this wild, foraging species from an alpine meadow, a valley lake shoreline, and a suburban park and exposing them to a diet with individual pesticides and mixtures, the researchers assess the varying lethal and sublethal effects that can occur with pesticide exposure. (See Daily News <\/em>here<\/a>.) A 2024 research article in Biology Letters<\/em><\/a>, published by The Royal Society<\/a>, finds that the neonicotinoid<\/a> insecticide imidacloprid<\/a> disrupts survival and reproductive patterns in Bombus impatiens<\/em> bumblebees. The study adds to the wide body of science<\/a> highlighting how exposure to pesticides \u201ccan result in immediate mortality or cause long-term detrimental effects on pollinators<\/a>\u2018 health, lifespan and reproductive success,\u201d the authors state. (See Daily News <\/em>here<\/a>.) A different novel study published in 2025 in Chemosphere<\/em> built on existing research of pesticide impacts on honeybee fertility. This study identifies impacts on male fertility in a bee species (Osmia bicornis<\/em>) with exposure to sulfoxaflor<\/a>, a systemic sulfoximine insecticide with similar mechanisms to neonicotinoids<\/a>. \u201cFor the first time, we demonstrate that short-term chronic, field-realistic exposure to a common pesticide reduced pre-copulatory display (36%) and sounds (27%) [courtship behaviors], increased the number of copulations (+110%) and the mating duration (+166%), while finally reducing sperm quantity (25%) and mating success (43%),\u201d the researchers report. They continue, \u201cOur research raises considerable concern on the impact of field-realistic, low sublethal pesticide levels on the fertility and reproductive success of pollinators.\u201d (See Daily News <\/em>here<\/a>.)<\/p>\n

    Bees are not the only critical wildlife species at elevated risk. A 2025 study following a mass mortality event of approximately 200 monarch butterflies<\/a> (Danaus plexippus plexippus<\/em>) in Pacific Grove, California, highlights the role of pesticides, synthetic pyrethroids<\/a> in particular, in causing lethal and sublethal effects to nontarget organisms. The research, published in Environmental Toxicology and Chemistry<\/em>, detects residues of 15 pesticides and associated metabolites in the bodies of 10 deceased butterflies collected from the January 2024 event that occurred near an overwintering site frequented by monarchs.<\/p>\n

    \u201cOn average, each monarch butterfly contained 7 pesticides,\u201d the authors report. They continue, \u201cNotably, three pyrethroid insecticides\u2014bifenthrin<\/a>, cypermethrin<\/a>, and permethrin<\/a>\u2014were consistently detected at or near each chemical\u2019s lethal dose (LD50).\u201d LC50, or Lethal Concentration 50, values represent the concentrations of chemicals lethal to 50% of a test population. (See Daily News<\/em> here<\/a>.)<\/p>\n

    A 2025 study conducted in rural Pennsylvania and published in Environmental Entomology<\/em> highlights threats to nontarget organisms<\/a> from neonicotinoid<\/a> insecticide exposure. Using nine different species of ground beetles as examples, the study documents sublethal behavioral effects as well as decreased week-long survival. \u201cBased on this current study, neonicotinoid sprays and seed treatments are likely to have acute, sublethal effects on carabid beetles when applied at label-recommended rates,\u201d the study concludes. \u201cWhile neonicotinoid use is unlikely to cause direct, acute (<24 h) losses to carabid populations, exposure is likely to reduce feeding activity and longer-term (>7 d) carabid survival.\u201d (See Daily News <\/em>here<\/a>.)<\/p>\n

    Call to Action<\/strong><\/h2>\n

    At the end of this year\u2019s Pollinator Week in June, Beyond Pesticides called on U.S. Environmental Protection Agency (EPA) to meet its obligations under Federal Insecticide, Fungicide, and Rodenticide Act<\/em> (FIFRA) and Endangered Species Act<\/em> (ESA) by facilitating a transition to organic practices, given the unreasonable adverse effects to pollinators associated with pesticide use. If you have not already, you can take this action today! (See Daily News <\/em>here<\/a> and Action of the Week <\/em>here<\/a>.)<\/p>\n

    All unattributed positions and opinions in this piece are those of Beyond Pesticides.<\/em><\/p>\n

    Source<\/strong>: Environmental Advances<\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    (Beyond Pesticides, July 31, 2025) A study published in Environmental Advances finds that hundreds of honeybee hives across central and northern Italy are contaminated with various pesticides and their metabolites, including glyphosate and fosetyl.\u00a0 \u201cThere was no significant difference in glyphosate presence between dead\/dying and live bees, suggesting chronic exposure rather than acute toxicity. However, higher pesticide concentrations in dead\/dying bees indicate potential sublethal effects contributing to colony distress,\u201d according to the authors. This peer-reviewed study builds on the mounting evidence outlined in the literature connecting pesticide residues to nontarget harm to pollinators and other insects and animals that are critical to biodiversity. Background and Methodology \u201cThe primary objectives of this study were to develop and validate a reliable, sensitive method for analyzing polar pesticides [highly soluble in water] in honeybees and to investigate polar pesticides residue levels in honeybees across northern and central Italy,\u201d say the researchers of this study, who conduct research at the Experimental Zooprophylactic Institute of Lombardy and Emilia Romagna \u201cBruno Ubertini”, Experimental Zooprophylactic Institute of Umbria and Marche \u201cTogo Rosati\u201d, and Experimental Zooprophylactic Institute of Lazio and Tuscany “M. Aleandri.” 314 honeybee samples were gathered voluntarily from local beekeepers in six regions of northern and […]<\/p>\n","protected":false},"author":2,"featured_media":39176,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1213,21,354,334,41,6,345,521,93,1],"tags":[2148,605,1704,784,1962,470,1617,1157,443,877,442,636,818,1926],"class_list":["post-39161","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chemical-mixtures","category-chemicals","category-environmental-protection-agency-epa","category-glufosinate","category-glyphosate","category-international","category-persistence","category-poisoning","category-pollinators","category-uncategorized","tag-chronic","tag-epa","tag-epa-failure","tag-fifra","tag-glufosinate","tag-glyphosate","tag-gut-microbiome","tag-honey-bee","tag-honeybee","tag-honeybees","tag-pollinators","tag-science","tag-study","tag-sublethal"],"yoast_head":"\nSublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study - Beyond Pesticides Daily News Blog<\/title>\n<meta name=\"description\" content=\"A recent study finds that hundreds of honeybee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study - Beyond Pesticides Daily News Blog\" \/>\n<meta property=\"og:description\" content=\"A recent study finds that hundreds of honeybee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/\" \/>\n<meta property=\"og:site_name\" content=\"Beyond Pesticides Daily News Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/beyondpesticides\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/beyondpesticides\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-31T04:01:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-31T15:20:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25-1024x576.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"576\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Beyond Pesticides\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ByondPesticides\" \/>\n<meta name=\"twitter:site\" content=\"@ByondPesticides\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Beyond Pesticides\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/\"},\"author\":{\"name\":\"Beyond Pesticides\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/person\/1b5c0a0981b549cc5b628770073031f4\"},\"headline\":\"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study\",\"datePublished\":\"2025-07-31T04:01:47+00:00\",\"dateModified\":\"2025-07-31T15:20:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/\"},\"wordCount\":1191,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#organization\"},\"image\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png\",\"keywords\":[\"chronic\",\"EPA\",\"EPA failure\",\"FIFRA\",\"glufosinate\",\"glyphosate\",\"gut microbiome\",\"honey bee\",\"honeybee\",\"honeybees\",\"pollinators\",\"science\",\"study\",\"sublethal\"],\"articleSection\":[\"Chemical Mixtures\",\"Chemicals\",\"Environmental Protection Agency (EPA)\",\"glufosinate\",\"Glyphosate\",\"International\",\"Persistence\",\"Poisoning\",\"Pollinators\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/\",\"url\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/\",\"name\":\"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study - Beyond Pesticides Daily News Blog\",\"isPartOf\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png\",\"datePublished\":\"2025-07-31T04:01:47+00:00\",\"dateModified\":\"2025-07-31T15:20:10+00:00\",\"description\":\"A recent study finds that hundreds of honeybee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate.\",\"breadcrumb\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage\",\"url\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png\",\"contentUrl\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png\",\"width\":1920,\"height\":1080,\"caption\":\"A recent study finds that hundreds of honey bee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#website\",\"url\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/\",\"name\":\"Beyond Pesticides Daily News Blog\",\"description\":\"News on Pesticide Science, Policy and Activism\",\"publisher\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#organization\",\"name\":\"Beyond Pesticides\",\"url\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2023\/05\/BeyondPesticides-Logo-Stacked-scaled.jpg\",\"contentUrl\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2023\/05\/BeyondPesticides-Logo-Stacked-scaled.jpg\",\"width\":2560,\"height\":2501,\"caption\":\"Beyond Pesticides\"},\"image\":{\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/beyondpesticides\",\"https:\/\/x.com\/ByondPesticides\",\"https:\/\/www.instagram.com\/beyondpesticides\/?hl=en\",\"https:\/\/www.linkedin.com\/company\/beyond-pesticides\",\"https:\/\/www.youtube.com\/user\/bpncamp\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/person\/1b5c0a0981b549cc5b628770073031f4\",\"name\":\"Beyond Pesticides\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/e26b7558fcb265e244c6e159abe5f0aab551822dc82fd0b1607e809bdfbed20a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/e26b7558fcb265e244c6e159abe5f0aab551822dc82fd0b1607e809bdfbed20a?s=96&d=mm&r=g\",\"caption\":\"Beyond Pesticides\"},\"description\":\"Beyond Pesticides is a 501(c)3 nonprofit organization headquartered in Washington, D.C., which works with allies in protecting public health and the environment to lead the transition to a world free of toxic pesticides. The founders, who established Beyond Pesticides (originally as National Coalition Against the Misuse of Pesticides) as a nonprofit membership organization in 1981, felt that without the existence of such an organized, national network, local, state and national pesticide policy would become, under chemical industry pressure, increasingly unresponsive to public health and environmental concerns. Beyond Pesticides believes that people must have a voice in decisions that affect them directly. We believe decisions should not be made for us by chemical companies or by decision-makers who either do not have all of the facts or refuse to consider them. Learn more about our work, read A Year in Review\u20142021, our accomplishments are your victories! Beyond Pesticides seeks to protect healthy air, water, land, and food for ourselves and future generations. By forging ties with governments, nonprofits, and people who rely on these natural resources, we reduce the need for unnecessary pesticide use and protect public health and the environment. Beyond Pesticides provides hands-on services to the public and supports local action by: identifying and interpreting hazards; and, designing safe pest management programs. With the information provided by Beyond Pesticides, people may not only be able to make informed choices and adopt practices that protect themselves and their families from unnecessary exposure to pesticides, but they will be able to effect changes on community-wide pest management decisions and policies that govern pesticide use, such as pesticide uses in parks, schools, for community insect control and along roadsides. Beyond Pesticides believes that people must have a voice in decisions which affect them directly.\",\"sameAs\":[\"https:\/\/www.beyondpesticides.org\",\"https:\/\/www.facebook.com\/beyondpesticides\/\",\"https:\/\/www.instagram.com\/beyondpesticides\/\",\"https:\/\/www.linkedin.com\/company\/beyond-pesticides\/\",\"https:\/\/x.com\/ByondPesticides\",\"https:\/\/www.youtube.com\/user\/bpncamp\/\"],\"url\":\"https:\/\/beyondpesticides.org\/dailynewsblog\/author\/beyond-pesticides\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study - Beyond Pesticides Daily News Blog","description":"A recent study finds that hundreds of honeybee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/","og_locale":"en_US","og_type":"article","og_title":"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study - Beyond Pesticides Daily News Blog","og_description":"A recent study finds that hundreds of honeybee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate.","og_url":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/","og_site_name":"Beyond Pesticides Daily News Blog","article_publisher":"https:\/\/www.facebook.com\/beyondpesticides","article_author":"https:\/\/www.facebook.com\/beyondpesticides\/","article_published_time":"2025-07-31T04:01:47+00:00","article_modified_time":"2025-07-31T15:20:10+00:00","og_image":[{"width":1024,"height":576,"url":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25-1024x576.png","type":"image\/png"}],"author":"Beyond Pesticides","twitter_card":"summary_large_image","twitter_creator":"@ByondPesticides","twitter_site":"@ByondPesticides","twitter_misc":{"Written by":"Beyond Pesticides","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#article","isPartOf":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/"},"author":{"name":"Beyond Pesticides","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/person\/1b5c0a0981b549cc5b628770073031f4"},"headline":"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study","datePublished":"2025-07-31T04:01:47+00:00","dateModified":"2025-07-31T15:20:10+00:00","mainEntityOfPage":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/"},"wordCount":1191,"commentCount":0,"publisher":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#organization"},"image":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage"},"thumbnailUrl":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png","keywords":["chronic","EPA","EPA failure","FIFRA","glufosinate","glyphosate","gut microbiome","honey bee","honeybee","honeybees","pollinators","science","study","sublethal"],"articleSection":["Chemical Mixtures","Chemicals","Environmental Protection Agency (EPA)","glufosinate","Glyphosate","International","Persistence","Poisoning","Pollinators"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/","url":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/","name":"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study - Beyond Pesticides Daily News Blog","isPartOf":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage"},"image":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage"},"thumbnailUrl":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png","datePublished":"2025-07-31T04:01:47+00:00","dateModified":"2025-07-31T15:20:10+00:00","description":"A recent study finds that hundreds of honeybee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate.","breadcrumb":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#primaryimage","url":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png","contentUrl":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/07\/DN-7.31.25.png","width":1920,"height":1080,"caption":"A recent study finds that hundreds of honey bee hives across Italy are contaminated with various pesticides and their metabolites, including glyphosate."},{"@type":"BreadcrumbList","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/07\/sublethal-effects-of-weed-killer-glyphosate-associated-with-colony-decline-according-to-study\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/beyondpesticides.org\/dailynewsblog\/"},{"@type":"ListItem","position":2,"name":"Sublethal Effects of Weed Killer Glyphosate Associated with Colony Decline, According to Study"}]},{"@type":"WebSite","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#website","url":"https:\/\/beyondpesticides.org\/dailynewsblog\/","name":"Beyond Pesticides Daily News Blog","description":"News on Pesticide Science, Policy and Activism","publisher":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/beyondpesticides.org\/dailynewsblog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#organization","name":"Beyond Pesticides","url":"https:\/\/beyondpesticides.org\/dailynewsblog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/logo\/image\/","url":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2023\/05\/BeyondPesticides-Logo-Stacked-scaled.jpg","contentUrl":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2023\/05\/BeyondPesticides-Logo-Stacked-scaled.jpg","width":2560,"height":2501,"caption":"Beyond Pesticides"},"image":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/beyondpesticides","https:\/\/x.com\/ByondPesticides","https:\/\/www.instagram.com\/beyondpesticides\/?hl=en","https:\/\/www.linkedin.com\/company\/beyond-pesticides","https:\/\/www.youtube.com\/user\/bpncamp"]},{"@type":"Person","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/person\/1b5c0a0981b549cc5b628770073031f4","name":"Beyond Pesticides","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/e26b7558fcb265e244c6e159abe5f0aab551822dc82fd0b1607e809bdfbed20a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/e26b7558fcb265e244c6e159abe5f0aab551822dc82fd0b1607e809bdfbed20a?s=96&d=mm&r=g","caption":"Beyond Pesticides"},"description":"Beyond Pesticides is a 501(c)3 nonprofit organization headquartered in Washington, D.C., which works with allies in protecting public health and the environment to lead the transition to a world free of toxic pesticides. The founders, who established Beyond Pesticides (originally as National Coalition Against the Misuse of Pesticides) as a nonprofit membership organization in 1981, felt that without the existence of such an organized, national network, local, state and national pesticide policy would become, under chemical industry pressure, increasingly unresponsive to public health and environmental concerns. Beyond Pesticides believes that people must have a voice in decisions that affect them directly. We believe decisions should not be made for us by chemical companies or by decision-makers who either do not have all of the facts or refuse to consider them. Learn more about our work, read A Year in Review\u20142021, our accomplishments are your victories! Beyond Pesticides seeks to protect healthy air, water, land, and food for ourselves and future generations. By forging ties with governments, nonprofits, and people who rely on these natural resources, we reduce the need for unnecessary pesticide use and protect public health and the environment. Beyond Pesticides provides hands-on services to the public and supports local action by: identifying and interpreting hazards; and, designing safe pest management programs. With the information provided by Beyond Pesticides, people may not only be able to make informed choices and adopt practices that protect themselves and their families from unnecessary exposure to pesticides, but they will be able to effect changes on community-wide pest management decisions and policies that govern pesticide use, such as pesticide uses in parks, schools, for community insect control and along roadsides. Beyond Pesticides believes that people must have a voice in decisions which affect them directly.","sameAs":["https:\/\/www.beyondpesticides.org","https:\/\/www.facebook.com\/beyondpesticides\/","https:\/\/www.instagram.com\/beyondpesticides\/","https:\/\/www.linkedin.com\/company\/beyond-pesticides\/","https:\/\/x.com\/ByondPesticides","https:\/\/www.youtube.com\/user\/bpncamp\/"],"url":"https:\/\/beyondpesticides.org\/dailynewsblog\/author\/beyond-pesticides\/"}]}},"_links":{"self":[{"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/posts\/39161","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/comments?post=39161"}],"version-history":[{"count":14,"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/posts\/39161\/revisions"}],"predecessor-version":[{"id":39197,"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/posts\/39161\/revisions\/39197"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/media\/39176"}],"wp:attachment":[{"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/media?parent=39161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/categories?post=39161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-json\/wp\/v2\/tags?post=39161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}