{"id":188138,"date":"2026-07-17T11:43:18","date_gmt":"2026-07-17T11:43:18","guid":{"rendered":"https:\/\/raed.academy\/?p=188138"},"modified":"2026-07-17T11:51:28","modified_gmt":"2026-07-17T11:51:28","slug":"lestrategia-de-lespematozoide","status":"publish","type":"post","link":"https:\/\/raed.academy\/ca\/lestrategia-de-lespematozoide\/","title":{"rendered":"L&#8217;estrat\u00e8gia de l&#8217;espematozoide"},"content":{"rendered":"<div id=\"attachment_141385\" style=\"width: 240px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-141385\" class=\"wp-image-141385 size-full\" src=\"https:\/\/raed.academy\/wp-content\/uploads\/2023\/11\/Dr-Marc-Yeste-Oliveras-0.73.webp\" alt=\"Marc Yeste\" width=\"230\" height=\"317\" aria-describedby=\"caption-attachment-141385\" \/><p id=\"caption-attachment-141385\" class=\"wp-caption-text\">Dr. Marc Yeste<\/p><\/div>\n<p><a href=\"https:\/\/raed.academy\/ca\/academics\/dr-marc-yeste-oliveras\/\" target=\"_blank\" rel=\"noopener\"><em><strong>Marc Yeste<\/strong><\/em><\/a>, director del\u00a0<strong>Centre\u00a0de\u00a0Biotecnologia\u00a0de la\u00a0Reproducci\u00f3\u00a0TechnoSperm<\/strong>, investigador de l&#8217;<strong>Institut Catal\u00e0 de Recerca i Estudis Avan\u00e7ats<\/strong>, professor de Biologia Celular a les facultats de Medicina i Infermeria de la <strong>Universitat de Girona<\/strong> i acad\u00e8mic de n\u00famero de la <strong>Reial Acad\u00e8mia Europea de Doctors<\/strong> (RAED), va ingressar el passat 21 de maig a l&#8217;<strong>Acad\u00e8mia de Ci\u00e8ncies Veterin\u00e0ries de Catalunya<\/strong> amb el discurs<strong> &#8220;El binomi complexitat-simplicitat i l&#8217;espermatozoide: el cas dels mam\u00edfers euteris&#8221;<\/strong>, en el qual va presentar les \u00faltimes investigacions que ha desenvolupat al costat del seu equip. Un treball que analitza com als mam\u00edfers placentaris la morfologia i fisiologia dels espermatozoides oscil\u00b7la entre formes extremadament complexes i estructures m\u00e9s simples, per adaptar-se a l&#8217;entorn de l&#8217;aparell reproductor femen\u00ed. La recepci\u00f3 de Yeste va mer\u00e8ixer l&#8217;atenci\u00f3 tant dels canals de comunicaci\u00f3 de la Universitat de Girona com del <strong>&#8220;Diari de Girona&#8221;<\/strong>.<\/p>\n<p>A la seva exposici\u00f3, l&#8217;acad\u00e8mic va explicar que, tot i que l&#8217;evoluci\u00f3 s&#8217;ha ent\u00e8s tradicionalment com un proc\u00e9s que impulsa estructures cada vegada m\u00e9s complexes, a la biologia reproductiva dels mam\u00edfers placentaris (euteris) s&#8217;observa un equilibri fascinant entre complexitat i simplicitat. En esp\u00e8cies on la compet\u00e8ncia esperm\u00e0tica \u00e9s intensa, quan els g\u00e0metes de diversos mascles competeixen dins del tracte reproductor femen\u00ed, els espermatozoides solen desenvolupar caps molt allargats i flagells altament elaborats que els permeten assolir m\u00e9s velocitat i capacitat de penetraci\u00f3. Tot i aix\u00f2, a d&#8217;altres casos, l&#8217;evoluci\u00f3 ha afavorit morfologies m\u00e9s redu\u00efdes i simples que optimitzen l&#8217;efici\u00e8ncia metab\u00f2lica i la motilitat, demostrant que la simplicitat tamb\u00e9 pot ser una estrat\u00e8gia guanyadora.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-165274\" src=\"https:\/\/raed.academy\/wp-content\/uploads\/2025\/06\/shutt-fecundacion-fertilidad-ovulo-y-espermatozoides-dst.webp\" sizes=\"(max-width: 600px) 100vw, 600px\" srcset=\"https:\/\/raed.academy\/wp-content\/uploads\/2025\/06\/shutt-fecundacion-fertilidad-ovulo-y-espermatozoides-dst.webp 600w, https:\/\/raed.academy\/wp-content\/uploads\/2025\/06\/shutt-fecundacion-fertilidad-ovulo-y-espermatozoides-dst-440x264.webp 440w\" alt=\"\" width=\"600\" height=\"360\" \/>L&#8217;expert va explicar que aquestes caracter\u00edstiques s\u00f3n fruit de forces selectives molt concretes, ja que l&#8217;aparell reproductor femen\u00ed actua com un filtre extremadament exigent: els espermatozoides han de sobreviure al moc cervical i a altres barreres hostils, la qual cosa condiciona directament el seu disseny morfol\u00f2gic. A m\u00e9s, les femelles exerceixen una selecci\u00f3 cr\u00edptica que afavoreix determinats tipus d\u2019ejaculaci\u00f3. Segons les investigacions del grup TechnoSperm, l&#8217;espermatozoide no pot entendre&#8217;s com una c\u00e8l\u00b7lula a\u00efllada, sin\u00f3 com a part d&#8217;un sistema integrat on la qualitat de l&#8217;ejaculaci\u00f3 i la taxa metab\u00f2lica de l&#8217;esp\u00e8cie juguen un paper fonamental. Aquesta din\u00e0mica evolutiva revela que la natura no sempre aposta per la complexitat: de vegades, l&#8217;efici\u00e8ncia i l&#8217;economia energ\u00e8tica resulten m\u00e9s avantatjoses. Les troballes obren vies interessants per a la millora de les t\u00e8cniques de reproducci\u00f3 assistida, on comprendre aquests mecanismes podria optimitzar la selecci\u00f3 i manipulaci\u00f3 d\u2019espermatozoides en tractaments de fertilitat.<\/p>\n<p>Yeste tamb\u00e9 dirigeix l&#8217;<strong>Institut de Tecnologia Agroaliment\u00e0ria<\/strong> de la Universitat de Girona i \u00e9s docent del <strong>M\u00e0ster en Embriologia Cl\u00ednica<\/strong> de la <strong>Universitat d&#8217;Oxford<\/strong>. Les seves recerques s&#8217;han centrat en la biologia de la reproducci\u00f3 de diferents esp\u00e8cies de mam\u00edfers. Ha publicat m\u00e9s de 260 articles i 20 cap\u00edtols de llibre sobre la mat\u00e8ria i ha participat en m\u00e9s d&#8217;un centenar de projectes d&#8217;investigaci\u00f3 i contractes amb empreses. Coordina el<strong> Grup Consolidat de Recerca en Biotecnologia de la Reproducci\u00f3<\/strong> de la <strong>Generalitat de Catalunya<\/strong>, que es desenvolupa de forma conjunta entre experts de la Universitat de Girona i la <strong>Universitat Aut\u00f2noma de Barcelona<\/strong>.<\/p>\n<h2><em><a href=\"https:\/\/www.udg.edu\/ca\/udg\/detall-noticies\/eventid\/64863\" target=\"_blank\" rel=\"noopener\">Llegiu la informaci\u00f3 de la Universitat de Girona<\/a><\/em><\/h2>\n<h2><a href=\"https:\/\/www.diaridegirona.cat\/girona\/2026\/06\/18\/professor-udg-marc-yeste-ingressa-131562715.html\" target=\"_blank\" rel=\"noopener\"><em>Llegiu la informaci\u00f3 de &#8220;Diari de Girona&#8221;<\/em><\/a><\/h2>\n","protected":false},"excerpt":{"rendered":"<p>Marc Yeste analitza, durant el seu ingr\u00e9s (com acad\u00e8mic) a l&#8217;ACVC, com als mam\u00edfers placentaris la morfologia i fisiologia dels espermatozoides oscil\u00b7la entre formes extremadament complexes i estructures m\u00e9s simples, per adaptar-se a l&#8217;entorn de l&#8217;aparell reproductor femen\u00ed<\/p>\n","protected":false},"author":12,"featured_media":165275,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[332,331,168],"tags":[],"class_list":["post-188138","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biologia-ca","category-microbiologia-ca","category-premis-distincions-i-nomenaments","et-has-post-format-content","et_post_format-et-post-format-standard"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - 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