{"id":83323,"date":"2025-12-03T06:03:59","date_gmt":"2025-12-03T10:03:59","guid":{"rendered":"https:\/\/www.mundoacuicola.cl\/new\/?p=83323"},"modified":"2025-12-03T23:01:44","modified_gmt":"2025-12-04T03:01:44","slug":"sea-lice-2025-resaltan-avances-en-prevencion-inmunidad-e-innovacion","status":"publish","type":"post","link":"https:\/\/www.mundoacuicola.cl\/new\/sea-lice-2025-resaltan-avances-en-prevencion-inmunidad-e-innovacion\/","title":{"rendered":"Sea Lice 2025: Resaltan avances en prevenci\u00f3n, inmunidad e innovaci\u00f3n"},"content":{"rendered":"<p data-start=\"352\" data-end=\"860\">La segunda jornada del Sea Lice Conference 2025, realizada este 2 de diciembre en el Hotel Wyndham Pettra de Puerto Varas, profundiz\u00f3 en los avances sobre inmunidad del salm\u00f3n, estado de la caligidosis en Chile, din\u00e1mica ecol\u00f3gica del piojo de mar y nuevas aproximaciones gen\u00e9ticas y farmacol\u00f3gicas para el control del par\u00e1sito. El programa reuni\u00f3 a investigadores de Canad\u00e1, Chile y Europa en sesiones centradas en biolog\u00eda poblacional, interacci\u00f3n con peces silvestres y herramientas moleculares aplicadas al manejo sanitario.<\/p>\n<h3 data-start=\"832\" data-end=\"868\">Actualizaci\u00f3n sanitaria nacional<\/h3>\n<p data-start=\"870\" data-end=\"1329\">En el bloque inicial, Osvaldo Sandoval, jefe del Departamento de Salud Animal de Sernapesca, present\u00f3 \u201cCurrent status of caligidosis disease in Chile\u201d. Se\u00f1al\u00f3 que \u201ca partir de julio de este a\u00f1o las cargas empiezan a superar lo que eran las cargas del a\u00f1o pasado\u201d, en un contexto de incremento cercano al 10% en biomasa cultivada. Precis\u00f3 que Ays\u00e9n muestra las alzas m\u00e1s marcadas, mientras que Magallanes mantiene niveles considerablemente menores.<\/p>\n<p data-start=\"870\" data-end=\"1329\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-large wp-image-83340 aligncenter\" src=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-533x400.jpg\" alt=\"\" width=\"533\" height=\"400\" srcset=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-533x400.jpg 533w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-scaled-500x375.jpg 500w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-300x225.jpg 300w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-768x576.jpg 768w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-1536x1152.jpg 1536w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-2048x1536.jpg 2048w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2023-1024x768.jpg 1024w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><\/p>\n<p data-start=\"1331\" data-end=\"1980\">Respecto al uso de f\u00e1rmacos, inform\u00f3 \u201cuna reducci\u00f3n de 26,7% en el uso de antiparasitarios\u201d y detall\u00f3 que \u201cm\u00e1s del 56% de los f\u00e1rmacos utilizados corresponden al azametifos\u201d. Ays\u00e9n concentra el 67% de los tratamientos y Los Lagos el 32%, con eficacias superiores al 75% en sistemas con lona y cercanas al 92% en embarcaciones estancas. Sandoval enfatiz\u00f3 que el programa de control se est\u00e1 reorientando \u201ca la prevenci\u00f3n, a anticipar escenarios y reducir la dependencia de herramientas que hist\u00f3ricamente tuvieron un rol central\u201d, destacando la actualizaci\u00f3n del programa de Caligus y la vigilancia de susceptibilidad en coordinaci\u00f3n con Ifop e Incar.<\/p>\n<p data-start=\"1982\" data-end=\"2346\"><img decoding=\"async\" class=\"size-large wp-image-83341 alignleft\" src=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-300x400.jpg\" alt=\"\" width=\"300\" height=\"400\" srcset=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-300x400.jpg 300w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-scaled-500x667.jpg 500w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-169x225.jpg 169w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-768x1024.jpg 768w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-1152x1536.jpg 1152w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-1536x2048.jpg 1536w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-1024x1365.jpg 1024w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_1985-scaled.jpg 1920w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Antes de esta actualizaci\u00f3n, Mark Fast (University of Prince Edward Island, Canad\u00e1) hab\u00eda abierto la jornada con \u201cFrom Genes to Environment: Shaping our understanding of salmon immunity\u201d, revisando c\u00f3mo la combinaci\u00f3n de gen\u00e9tica, ambiente y manejo productivo modula la respuesta inmune del salm\u00f3n y su capacidad para enfrentar infestaciones de piojo de mar.<\/p>\n<h2 data-start=\"2353\" data-end=\"2389\">SESSION 5 \u2013 Wild Fish Interaction<\/h2>\n<p data-start=\"2391\" data-end=\"2477\">El primer bloque tem\u00e1tico se centr\u00f3 en la interacci\u00f3n entre piojos y peces silvestres.<\/p>\n<ul data-start=\"2479\" data-end=\"3955\">\n<li data-start=\"2479\" data-end=\"2949\">\n<p data-start=\"2481\" data-end=\"2949\">Lance Stewardson (Mainstream Biological Consulting, Canad\u00e1) present\u00f3 \u201cTrends in abundance of sea lice on juvenile wild Pacific salmon\u201d, analizando registros de L. salmonis y C. clemensi en juveniles de salm\u00f3n del Pac\u00edfico tras el cierre de centros de cultivo en dos zonas de la costa de Columbia Brit\u00e1nica. Los resultados muestran tendencias estables, lo que apunta al peso de factores oceanogr\u00e1ficos y clim\u00e1ticos m\u00e1s all\u00e1 de la presencia directa de centros.<\/p>\n<\/li>\n<li data-start=\"2951\" data-end=\"3243\">\n<p data-start=\"2953\" data-end=\"3243\">Tormod Haraldstad (Institute of Marine Research, Noruega) expuso \u201cQuantifying the impact of salmon lice on wild Atlantic salmon sea survival\u201d, basado en ensayos de infestaci\u00f3n in situ que permiten estimar el efecto del par\u00e1sito en supervivencia marina temprana de salmones silvestres.<\/p>\n<\/li>\n<li data-start=\"3245\" data-end=\"3569\">\n<p data-start=\"3247\" data-end=\"3569\">Thomas Bohn (Institute of Marine Research, Noruega) continu\u00f3 con \u201cIn situ experiments reveal effects of salmon lice on all wild salmonid species in Norway\u201d, mostrando diferencias de sensibilidad entre especies y poniendo \u00e9nfasis en que la presi\u00f3n parasitaria tiene implicancias para varias poblaciones de salm\u00f3nidos.<\/p>\n<\/li>\n<li data-start=\"3571\" data-end=\"3955\">\n<p data-start=\"3573\" data-end=\"3955\">El bloque cerr\u00f3 con David Pioch (Institute of Marine Research, Noruega) y la charla \u201cInteractive effects of temperature and Lepeophtheirus salmonis infection on wild-caught post-smolt Atlantic salmon\u201d, donde se presentaron efectos combinados de infecci\u00f3n y temperatura sobre crecimiento, condici\u00f3n corporal e indicadores de salud en post-smolts capturados en el medio natural.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"3962\" data-end=\"4008\">SESSION 6 \u2013 Sea Lice Biology and Ecology II<\/h2>\n<p data-start=\"4010\" data-end=\"4090\">Tras el coffee break, la conferencia avanz\u00f3 hacia biolog\u00eda y ecolog\u00eda del piojo.<\/p>\n<ul data-start=\"4092\" data-end=\"5849\">\n<li data-start=\"4092\" data-end=\"4356\">\n<p data-start=\"4094\" data-end=\"4356\">Kirstin Eliasen (FIRUM, Islas Feroe) abri\u00f3 el bloque con \u201cDemographic allele effect in Lepeophtheirus salmonis\u201d, abordando c\u00f3mo la estructura gen\u00e9tica y la densidad poblacional del par\u00e1sito influyen en su \u00e9xito reproductivo y en la din\u00e1mica de infestaci\u00f3n.<\/p>\n<\/li>\n<li data-start=\"4358\" data-end=\"4790\">\n<p data-start=\"4360\" data-end=\"4790\">Margarita del Pilar Gonz\u00e1lez G\u00f3mez (Universidad San Sebasti\u00e1n, Chile) present\u00f3 \u201cCharacterization of abundance patterns of Caligus rogercresseyi larvae in different geographical zones of the Los Lagos and Ays\u00e9n Regions\u201d. Utilizando 158 muestreos de zooplancton en 46 centros, describi\u00f3 patrones estacionales y hotspots larvales en barrios espec\u00edficos, informaci\u00f3n clave para interpretar presi\u00f3n parasitaria a escala regional.<\/p>\n<\/li>\n<li data-start=\"4358\" data-end=\"4790\"><img decoding=\"async\" class=\"size-large wp-image-83339 aligncenter\" src=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-533x400.jpg\" alt=\"\" width=\"533\" height=\"400\" srcset=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-533x400.jpg 533w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-scaled-500x375.jpg 500w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-300x225.jpg 300w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-768x576.jpg 768w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-1536x1152.jpg 1536w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-2048x1536.jpg 2048w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2105-1024x768.jpg 1024w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><\/li>\n<li data-start=\"4792\" data-end=\"5158\">\n<p data-start=\"4794\" data-end=\"5158\">Snorre Bakke (Norwegian University of Science and Technology, Noruega) expuso \u201c(Mis) understanding salmon lice larvae\u201d, comparando distribuciones objetivamente medidas en campo con los resultados de experimentos de laboratorio y mesocosmos, y mostrando que los patrones observados en ambientes naturales pueden diferir de lo esperado en sistemas controlados.<\/p>\n<\/li>\n<li data-start=\"5160\" data-end=\"5437\">\n<p data-start=\"5162\" data-end=\"5437\">Christiane Eichner (Universidad de Bergen, Noruega) profundiz\u00f3 en \u201cInsights into frontal filament formation in salmon louse chalimus larvae\u201d, describiendo procesos de formaci\u00f3n del filamento frontal en estadios chalimus y su relevancia para la fijaci\u00f3n al hospedador.<\/p>\n<\/li>\n<li data-start=\"5439\" data-end=\"5849\">\n<p data-start=\"5441\" data-end=\"5849\">El bloque cerr\u00f3 con Anna Solvang Batnes (Norwegian University of Science and Technology, Noruega) y la charla \u201cLepeophtheirus salmonis larvae originating from submerged and surface salmon farms: behavioral responses to light, salinity and pressure stimuli\u201d, comparando respuestas de larvas provenientes de centros con estructuras sumergidas y de superficie frente a cambios de luz, salinidad y presi\u00f3n.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"5856\" data-end=\"5899\">SESSION 7 \u2013 Pharmacological Treatments I<\/h2>\n<p data-start=\"5901\" data-end=\"5990\">En la tarde, el foco se desplaz\u00f3 hacia tratamientos farmacol\u00f3gicos y uso de medicamentos.<\/p>\n<ul data-start=\"5992\" data-end=\"7831\">\n<li data-start=\"5992\" data-end=\"6339\">\n<p data-start=\"5994\" data-end=\"6339\">Daniel Felipe Woywood Wijnant (Aquabench, Chile) present\u00f3 \u201cEvolution of Caligus rogercresseyi management strategies in Chilean aquaculture\u201d, revisando c\u00f3mo han cambiado las estrategias de control en Chile, desde esquemas altamente dependientes de f\u00e1rmacos hacia combinaciones que incluyen manejo, rotaci\u00f3n y herramientas no farmacol\u00f3gicas.<\/p>\n<\/li>\n<li data-start=\"6341\" data-end=\"6611\">\n<p data-start=\"6343\" data-end=\"6611\">Lene Hoegset (MSD Animal Health, Noruega) expuso \u201cA new sensitivity test of salmon lice larvae enables more sustainable use of sea lice medicines\u201d, introduciendo un test de sensibilidad para larvas de piojo que permite ajustar dosis y frecuencia de tratamientos.<\/p>\n<\/li>\n<li data-start=\"6613\" data-end=\"6918\">\n<p data-start=\"6615\" data-end=\"6918\">Patrick Alexander Nelson (Universidad de Bergen, Noruega) present\u00f3 \u201cMethods to increase DNA vaccine efficiency against a salmon louse labial gland protein\u201d, enfoc\u00e1ndose en estrategias para mejorar la respuesta inmune generada por vacunas de ADN contra ant\u00edgenos de gl\u00e1ndulas labiales del par\u00e1sito.<\/p>\n<\/li>\n<li data-start=\"6920\" data-end=\"7249\">\n<p data-start=\"6922\" data-end=\"7249\">Hanna Magdalena Sahlstrom (Norwegian University of Life Sciences, Noruega) revis\u00f3 \u201cDefining nicotinic acetylcholine receptor stoichiometry in Lepeophtheirus salmonis to advance targeted pesticide development\u201d, aportando informaci\u00f3n sobre receptores nicot\u00ednicos que podr\u00eda orientar el dise\u00f1o de pesticidas m\u00e1s espec\u00edficos.<\/p>\n<\/li>\n<li data-start=\"7251\" data-end=\"7504\">\n<p data-start=\"7253\" data-end=\"7504\">Marlen Brisa Espinoza Lagos (Mowi, Chile) expuso \u201cIntegrated evaluation of Emamectin use\u201d, integrando eficacia en campo, concentraciones en m\u00fasculo de pez y resultados de sensibilidad en laboratorio para evaluar el uso de benzoato de emamectina.<\/p>\n<\/li>\n<li data-start=\"7251\" data-end=\"7504\">\n<p data-start=\"7253\" data-end=\"7504\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-83342 aligncenter\" src=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-533x400.jpg\" alt=\"\" width=\"533\" height=\"400\" srcset=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-533x400.jpg 533w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-scaled-500x375.jpg 500w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-300x225.jpg 300w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-768x576.jpg 768w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-1536x1152.jpg 1536w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-2048x1536.jpg 2048w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2219-1024x768.jpg 1024w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><\/p>\n<\/li>\n<li data-start=\"7506\" data-end=\"7831\">\n<p data-start=\"7508\" data-end=\"7831\">El bloque concluy\u00f3 con Jos\u00e9 Antonio Matus Uribe (Universidad San Sebasti\u00e1n, Chile) y la charla \u201cMucoadhesive chitosan\u2013alginate microparticles loaded with azamethiphos for targeted control of Caligus rogercresseyi\u201d, que present\u00f3 micro-part\u00edculas mucoadhesivas como plataforma para liberar azametifos de forma dirigida.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"7838\" data-end=\"7877\">SESSION 8 \u2013 Genetics and Genomics II<\/h2>\n<p data-start=\"7879\" data-end=\"7967\">El d\u00eda cerr\u00f3 con un bloque dedicado a gen\u00e9tica y gen\u00f3mica del hospedador y del par\u00e1sito.<\/p>\n<ul data-start=\"7969\" data-end=\"9083\">\n<li data-start=\"7969\" data-end=\"8234\">\n<p data-start=\"7971\" data-end=\"8234\">Shawna L. Semple (University of Prince Edward Island, Canad\u00e1) present\u00f3 \u201cUncovering the important genetic defenses against sea lice in coho salmon via CRISPR-mediated gene editing\u201d, identificando genes clave de defensa en salm\u00f3n coho mediante edici\u00f3n g\u00e9nica.<\/p>\n<\/li>\n<li data-start=\"8236\" data-end=\"8520\">\n<p data-start=\"8238\" data-end=\"8520\">Yeny Leal (INCAR, Chile) expuso \u201cIPath\u00ae vaccine reduces sea lice infestation and enhances the transcriptome responses of Atlantic salmon to hypoxia\u201d, mostrando que la vacuna reduce infestaciones y modula la respuesta transcript\u00f3mica del salm\u00f3n frente a condiciones de hipoxia.<\/p>\n<\/li>\n<li data-start=\"8522\" data-end=\"8822\">\n<p data-start=\"8524\" data-end=\"8822\">Nathan Mertz (Norwegian University of Science and Technology, Noruega) present\u00f3 \u201cMining Lepeophtheirus salmonis transcriptomes unearths keys to stage-specific quantification of parasitic larvae\u201d, identificando firmas transcript\u00f3micas que permiten cuantificar larvas por estadio de desarrollo.<\/p>\n<\/li>\n<li data-start=\"8522\" data-end=\"8822\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-83337 aligncenter\" src=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-533x400.jpg\" alt=\"\" width=\"533\" height=\"400\" srcset=\"https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-533x400.jpg 533w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-scaled-500x375.jpg 500w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-300x225.jpg 300w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-768x576.jpg 768w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-1536x1152.jpg 1536w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-2048x1536.jpg 2048w, https:\/\/www.mundoacuicola.cl\/new\/wp-content\/uploads\/2025\/12\/IMG_2312-1024x768.jpg 1024w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><\/li>\n<li data-start=\"8824\" data-end=\"9083\">\n<p data-start=\"8826\" data-end=\"9083\">El bloque culmin\u00f3 con Antonio Casuso (INCAR, Chile) y la charla \u201cCommercial vaccines do not impact the efficacy of the IPath sea lice vaccine\u201d, donde se analiz\u00f3 la compatibilidad de vacunas comerciales con el desempe\u00f1o de iPath en esquemas combinados.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"9085\" data-end=\"9271\">La jornada finaliz\u00f3 con la Poster Session II, acompa\u00f1ada de un espacio de conversaci\u00f3n entre grupos de investigaci\u00f3n, especialistas sanitarios y representantes del sector productivo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La segunda jornada del Sea Lice Conference 2025 reuni\u00f3 a expertos nacionales e internacionales para revisar los \u00faltimos avances cient\u00edficos y sanitarios sobre el piojo de mar, incluyendo actualizaci\u00f3n regulatoria, estudios ecol\u00f3gicos y nuevas herramientas de control.<\/p>\n","protected":false},"author":8,"featured_media":83324,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[475,1134,473,3369,476,525,197,1633,125,12813],"class_list":["post-83323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-salmonicultura","tag-caligus","tag-genetica","tag-incar","tag-inmunidad","tag-piojo-de-mar","tag-puerto-varas","tag-salmonicultura","tag-sea-lice","tag-sernapesca","tag-tratamientos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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