');mask-image:url('data:image/svg+xml;utf8, ');content:'';margin:0 .4rem;display:inline-block;vertical-align:middle;line-height:1}.breadcrumb-trail .trail-items li:last-child:after{display:none}.bloghash-breadcrumbs{font-size:1.4rem;border-width:0}#bloghash-copyright .bloghash-flex-row>div:empty{display:none}#bloghash-copyright>.bloghash-container>.bloghash-flex-row>div{width:auto;padding-top:.6rem;padding-bottom:.6rem}.bloghash-copyright-layout-1 #bloghash-copyright>.bloghash-container>.bloghash-flex-row>div{-ms-flex-preferred-size:100%;flex-basis:100%;-ms-flex-negative:0;flex-shrink:0;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center}#bloghash-scroll-top{-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;position:fixed;bottom:2.5rem;right:2rem;z-index:997;width:4rem;height:4rem;opacity:0;-webkit-transform:translate3d(0,3rem,0);transform:translate3d(0,3rem,0)}#bloghash-scroll-top .bloghash-scroll-icon{overflow:hidden;z-index:2}#bloghash-scroll-top .bloghash-icon{-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;height:2rem;color:var(--bloghash-white);-webkit-transform:translateY(1.1rem);-ms-transform:translateY(1.1rem);transform:translateY(1.1rem)}#bloghash-scroll-top:before{content:'';z-index:1;border-radius:10rem;background-color:var(--bloghash-primary);-webkit-transform:scale(1);-ms-transform:scale(1);transform:scale(1);border:.1rem solid rgba(185,185,185,.4)}#bloghash-scroll-top svg{fill:var(--bloghash-white)}.bloghash-entry>:first-child{margin-top:0}.bloghash-entry p{margin-bottom:1.5rem;margin-top:1.5rem}.author-avatar img{border-radius:var(--bloghash-full-radius);width:3rem;vertical-align:middle;margin-right:.8rem;display:inline-block;outline:1px solid rgba(185,185,185,.4)}#main .content-area .entry-meta a{color:inherit}.entry-meta{font-size:1.3rem;font-weight:600;margin-top:1.2rem}.entry-meta .bloghash-icon{height:1.827rem;margin-right:.7rem;vertical-align:text-bottom}.entry-meta .entry-meta-elements>span{padding:0 1rem;line-height:1.2}.entry-meta .entry-meta-elements>span.posted-on{line-height:1.5}.entry-meta .entry-meta-elements>span,.entry-meta .entry-meta-elements>span .posted-by{-js-display:inline-flex;display:-webkit-inline-box;display:-ms-inline-flexbox;display:inline-flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center}.entry-meta .entry-meta-elements>span:first-child{padding-left:0}.entry-meta .entry-meta-elements>span:last-child{margin-right:0;padding-right:0}.entry-meta .entry-meta-elements>span:before{content:'';position:relative;left:-1.1rem;width:4px;height:4px;border-radius:100%;background-color:var(--bloghash-primary)}.entry-meta .entry-meta-elements>span:first-child:before{display:none}.entry-media{margin-bottom:2.5rem}.entry-media img{margin:0 auto;display:block}.single-post .entry-content{margin-top:4rem}.single-post .entry-media{margin-bottom:4rem}.single .post-category{margin-bottom:.3rem;font-size:1.4rem}.single .post-category a{-js-display:inline-flex;display:-webkit-inline-box;display:-ms-inline-flexbox;display:inline-flex;margin:0 .4rem .8rem}.single .entry-header{text-align:start;margin-bottom:1rem}.single .entry-meta{text-align:start;margin-top:1.6rem}.single .entry-content{margin-bottom:5rem}.single .post-nav img{border-radius:var(--bloghash-normal-radius)}.single .post-nav .nav-previous .nav-content img{margin-right:2rem}.single .post-nav .nav-next .nav-content img{margin-left:2rem}.single.bloghash-page-title-align-left .bloghash-article>.entry-header,.single.bloghash-page-title-align-left .bloghash-article>.post-category{text-align:start}.single.bloghash-page-title-align-left .bloghash-article>.entry-meta>.entry-meta-elements{-webkit-box-pack:start;-ms-flex-pack:start;justify-content:flex-start}.author-box .author-box-avatar{min-width:0;min-height:0}.author-box .author-box-avatar{-ms-flex-item-align:start;align-self:flex-start;-ms-flex-negative:0;flex-shrink:0;-webkit-box-flex:0;-ms-flex-positive:0;flex-grow:0;margin-right:2.5rem}.author-box .author-box-avatar img{display:block;border-radius:50%}#cancel-comment-reply-link{font-size:1.3rem;border-radius:var(--bloghash-normal-radius);border:.2rem solid currentColor;font-weight:500;padding:.4rem .7rem;line-height:1;text-decoration:none;text-transform:capitalize;margin-left:1.4rem;color:inherit}.comment-form>p{-ms-flex-preferred-size:100%;flex-basis:100%;margin-top:0;margin-bottom:.8em}.comment-form textarea{height:19.2rem}button.bloghash-animate-arrow{-webkit-appearance:none;border:none;-webkit-box-shadow:none;box-shadow:none;background:0 0;outline:none}.bloghash-animate-arrow .arrow-bar{-webkit-transform:scaleX(0);-ms-transform:scaleX(0);transform:scaleX(0)}.bloghash-animate-arrow svg{vertical-align:middle}.bloghash-animate-arrow.right-arrow svg{-webkit-transform:rotate(180deg);-ms-transform:rotate(180deg);transform:rotate(180deg)}.bloghash-animate-arrow.right-arrow .arrow-bar{-webkit-transform-origin:100% 0;-ms-transform-origin:100% 0;transform-origin:100% 0}.bloghash-animate-arrow.right-arrow .arrow-handle{-webkit-transform:translateX(.6rem);-ms-transform:translateX(.6rem);transform:translateX(.6rem)}.bloghash-hamburger{padding:0;display:inline-block;font:inherit;color:inherit;text-transform:none;background-color:transparent;border:0;margin:0;overflow:visible}.hamburger-box{width:2.5rem;height:1.4rem;display:inline-block;position:relative}.hamburger-inner{display:block;top:50%;margin-top:-.1rem}.hamburger-inner,.hamburger-inner:before,.hamburger-inner:after{width:2.8rem;height:2px;background-color:#111827;border-radius:var(--bloghash-normal-radius);position:absolute}.hamburger-inner:before,.hamburger-inner:after{content:"";display:block}.hamburger-inner:before{top:-5px}.hamburger-inner:after{bottom:-5px}.bloghash-is-mobile #bloghash-header-inner .bloghash-nav>ul>li>a{color:inherit!important}.bloghash-mobile-nav{order:1;display:none;margin-left:2.4rem}.bloghash-hamburger,.bloghash-mobile-nav{-webkit-box-align:center;-ms-flex-align:center;align-items:center}body:not(.is-mobile-menu-active) .bloghash-hamburger .hamburger-box .hamburger-inner:before{width:1.5rem}.bloghash-hamburger{-js-display:inline-flex;display:-webkit-inline-box;display:-ms-inline-flexbox;display:inline-flex;border-radius:var(--bloghash-normal-radius)}.bloghash-hamburger .hamburger-inner,.bloghash-hamburger .hamburger-inner:before,.bloghash-hamburger .hamburger-inner:after{background-color:currentColor}#bloghash-header:after{content:'';position:fixed;top:100%;left:0;right:0;height:100vh;background-color:rgba(255,255,255,.85);z-index:991;opacity:0;visibility:hidden;will-change:opacity,visibility;-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}@media only screen and (min-width:782px){.site .bloghash-flex-row .col-md{-webkit-box-flex:1;-ms-flex-positive:1;flex-grow:1;-ms-flex-negative:1;flex-shrink:1;max-width:100%;-ms-flex-preferred-size:0;flex-basis:0}.site .bloghash-flex-row .col-md.flex-basis-auto{-ms-flex-preferred-size:auto;flex-basis:auto}.site .bloghash-flex-row .end-md{-webkit-box-pack:end;-ms-flex-pack:end;justify-content:flex-end;text-align:end;margin-left:auto}}@media only screen and (max-width:868px){.bloghash-hide-mobile-tablet{display:none!important}.bloghash-container{padding:0 3rem}.bloghash-header-widgets .bloghash-header-widget,.bloghash-header-widgets .bloghash-header-widget.bloghash-header-widget__button{padding-left:1rem;padding-right:1rem}.bloghash-header-widgets .bloghash-header-widget:not(.bloghash-header-widget__button,.bloghash-header-widget__socials) .bloghash-icon{font-size:2.4rem}.bloghash-mobile-nav{margin-left:1.6rem}}@media only screen and (max-width:599px){#bloghash-header-inner .bloghash-widget-wrapper,.bloghash-header-element,.bloghash-header-widgets .bloghash-header-widget{position:static}.bloghash-header-widgets .dropdown-item:after{display:none}.author-avatar img{display:none}.author-box .author-box-avatar{display:none}}@media only screen and (max-width:480px){#page{min-height:-webkit-fill-available}}@media only screen and (max-width:960px){#main>.bloghash-container{display:block}#primary{max-width:100%!important;padding-left:0!important;padding-right:0!important;margin-top:4rem}.single .post-nav img{display:none}}@media all and (-ms-high-contrast:none),(-ms-high-contrast:active){.bloghash-btn{height:1rem}#main>.bloghash-container #primary{-ms-flex-preferred-size:0%;flex-basis:0%}}.bloghash-btn{background-color:var(--bloghash-primary)}.content-area a:not(.bloghash-btn,.wp-block-button__link,.page-numbers,[class^=cat-],[rel=tag]),.bloghash-social-nav>ul>li>a .bloghash-icon.bottom-icon{color:var(--bloghash-primary)}#masthead .bloghash-header-widgets .dropdown-item:after,.bloghash-nav>ul .sub-menu:after{border-bottom-color:var(--bloghash-primary);outline:none!important}.bloghash-header-widgets .dropdown-item,.bloghash-nav .sub-menu{border-top-color:var(--bloghash-primary)}::-webkit-selection{background-color:var(--bloghash-primary);color:var(--bloghash-white)}::-webkit-scrollbar-thumb{background:rgba(0,0,0,.2)}::-webkit-scrollbar-thumb:hover{background:rgba(0,0,0,.4)}.mr-1{margin-right:.4rem}a.bloghash-btn i{font-size:105%;vertical-align:baseline}a.bloghash-btn i:before{display:inline-block;vertical-align:middle}a.bloghash-btn span{vertical-align:baseline;line-height:normal}@media (prefers-reduced-motion:reduce){*{animation-duration:0s!important}}.bloghash-cursor{visibility:hidden;position:fixed;z-index:10000;display:flex;justify-content:center;align-items:center;top:0;left:0}.bloghash-cursor .bloghash-cursor-wrapper{display:flex;justify-content:center;align-items:center}.bloghash-cursor .bloghash-cursor--follower{position:absolute;background-color:var(--bloghash-primary);opacity:.35;border-radius:100%;width:2.4rem;height:2.4rem}.bloghash-cursor .bloghash-cursor--label{position:absolute;display:flex;justify-content:center;align-items:center;color:var(--bloghash-white);letter-spacing:.08em;transform:scale(0);will-change:transform,opacity}.bloghash-cursor .bloghash-cursor--icon{position:absolute;display:flex;justify-content:center;align-items:center;color:var(--bloghash-white);transform:scale(0);will-change:transform,opacity;color:rgba(255,255,255,.76)}.bloghash-cursor .bloghash-cursor--icon:before{content:"\f061";font-family:var(--bloghash-font-awesome);font-size:2.4rem}.bloghash-glassmorphism{position:fixed;right:0;left:0;bottom:0;display:flex;overflow:hidden;z-index:-1}.bloghash-glassmorphism .block{width:28.8rem;height:28.8rem;filter:blur(64px);mix-blend-mode:multiply;border-radius:999px;display:block;opacity:.1}.bloghash-glassmorphism .block.one{margin-top:5rem;background-color:rgba(239,35,60)}.bloghash-glassmorphism .block.two{margin-top:16rem;margin-left:-8rem;background-color:rgba(4,134,139)}@media only screen and (min-width:768px){.bloghash-glassmorphism{top:4rem}}@media only screen and (min-width:1024px){.bloghash-glassmorphism .block{width:38.4rem;height:38.4rem}}@media only screen and (min-width:1280px){.bloghash-glassmorphism{top:8rem}}.post-category .cat-links a.cat-31{--bloghash-primary:#1e73ff;--bloghash-primary_80:#d2e3ff}:root{--bloghash-primary:#1075bc;--bloghash-primary_80:#d0e4f2;--bloghash-primary_15:#348ac7;--bloghash-primary_27:rgba(16,117,188,.27);--bloghash-primary_10:rgba(16,117,188,.1)}#bloghash-header-inner{background:#fff}.bloghash-logo .site-description{color:#66717f}#bloghash-header,.bloghash-header-widgets a:not(.bloghash-btn),.bloghash-logo a,.bloghash-hamburger{color:#131315}.bloghash-header-widget:after{background-color:#ccc}@media screen and (max-width:960px){#bloghash-header-inner .bloghash-nav{display:none;color:#000}.bloghash-mobile-toggen,.bloghash-mobile-nav{display:inline-flex}#bloghash-header-inner{position:relative}#bloghash-header-inner .bloghash-nav>ul>li>a{color:inherit}#bloghash-header-inner .bloghash-nav-container{position:static;border:none}#bloghash-header-inner .site-navigation{display:none;position:absolute;top:100%;width:100%;height:100%;min-height:100vh;left:0;right:0;margin:-1px 0 0;background:#fff;border-top:1px solid #eaeaea;box-shadow:0 15px 25px -10px rgba(50,52,54,.125);z-index:999;font-size:1.7rem;padding:0}#bloghash-header-inner .site-navigation>ul{overflow-y:auto;max-height:68vh;display:block}#bloghash-header-inner .site-navigation>ul>li>a{padding:0!important}#bloghash-header-inner .site-navigation>ul li{display:block;width:100%;padding:0;margin:0;margin-left:0!important}#bloghash-header-inner .site-navigation>ul .sub-menu{position:static;display:none;border:none;box-shadow:none;border:0;opacity:1;visibility:visible;font-size:1.7rem;transform:none;background:#f8f8f8;min-width:initial;left:0;padding:0;margin:0;border-radius:0;line-height:inherit}#bloghash-header-inner .site-navigation>ul .sub-menu>li>a>span{padding-left:50px!important}#bloghash-header-inner .site-navigation>ul .sub-menu .sub-menu>li>a>span{padding-left:70px!important}#bloghash-header-inner .site-navigation>ul .sub-menu a>span{padding:10px 30px 10px 50px}#bloghash-header-inner .site-navigation>ul a{padding:0;position:relative;background:0 0}#bloghash-header-inner .site-navigation>ul li{border-bottom:1px solid #eaeaea}#bloghash-header-inner .site-navigation>ul>li:last-child{border-bottom:0}#bloghash-header-inner .site-navigation>ul a>span{padding:10px 30px!important;width:100%;display:block}#bloghash-header-inner .site-navigation>ul a>span:after,#bloghash-header-inner .site-navigation>ul a>span:before{display:none!important}#bloghash-header-inner .site-navigation>ul .menu-item-has-children>a{display:inline-flex;width:100%;max-width:calc(100% - 50px)}#bloghash-header-inner .bloghash-nav .menu-item-has-children>a>span{border-right:1px solid rgba(185,185,185,.4)}#bloghash-header-inner .bloghash-nav .menu-item-has-children>a>.bloghash-icon{transform:none;width:50px;margin:0;position:absolute;right:0;height:1em;display:none}.bloghash-mobile-toggen{width:50px;height:1em;background:0 0;border:none}.bloghash-mobile-toggen .bloghash-icon{transform:none;width:50px;margin:0;position:absolute;right:0;height:1em}.bloghash-header-layout-3 .bloghash-logo-container>.bloghash-container{flex-wrap:wrap}.bloghash-header-layout-3 .bloghash-logo-container .bloghash-logo>.logo-inner{align-items:flex-start}.bloghash-header-layout-3 .bloghash-logo-container .bloghash-logo{order:0;align-items:flex-start;flex-basis:auto;margin-left:0}.bloghash-header-layout-3 .bloghash-logo-container .bloghash-header-element{flex-basis:auto}.bloghash-header-layout-3 .bloghash-logo-container .bloghash-mobile-nav{order:5}}.bloghash-header-layout-3 .bloghash-nav-container{background:#f1f6ff}.bloghash-header-layout-3 .bloghash-nav-container{border-color:rgba(185,185,185,.4);border-style:solid}.bloghash-nav.bloghash-header-element{font-weight:600;font-family:"Inter Tight",Helvetica,Arial,sans-serif;font-size:1.7rem;line-height:1.5}body:not(.bloghash-no-sidebar) #primary{max-width:70%}body{color:#002050}h1,a,.entry-meta,.bloghash-logo .site-title{color:#041139}:root{--bloghash-secondary:#041139}.bloghash-container{max-width:1480px}.bloghash-logo img{max-height:640px}@media only screen and (max-width:768px){.bloghash-logo .logo-inner{margin-top:25px;margin-right:1px;margin-bottom:25px}}.bloghash-breadcrumbs{padding-top:15px;padding-bottom:15px}.bloghash-breadcrumbs{background:#f1f6ff}.bloghash-breadcrumbs{border-color:rgba(185,185,185,.4);border-style:solid;border-top-width:2px;border-bottom-width:1px}html{font-size:62.5%}@media only screen and (max-width:768px){html{font-size:53%}}@media only screen and (max-width:480px){html{font-size:50%}}*{-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}body{font-weight:400;font-family:Poppins,Helvetica,Arial,sans-serif;font-size:1.7rem;line-height:1.75}h1,.bloghash-logo .site-title{font-weight:700;font-style:normal;text-transform:none;text-decoration:none;font-family:"Be Vietnam Pro",Helvetica,Arial,sans-serif}h1,.bloghash-logo .site-title{font-weight:700;font-size:4rem;line-height:1.4}#bloghash-header .bloghash-logo .site-title{font-size:3rem}.single-post .entry-content{font-size:1.6rem}.bloghash-btn{color:#fff;border-color:;border-width:.1rem;border-top-left-radius:0;border-top-right-radius:0;border-bottom-right-radius:0;border-bottom-left-radius:0}.bloghash-btn{font-weight:500;font-family:"Be Vietnam Pro",Helvetica,Arial,sans-serif;font-size:1.8rem}
Cosa hanno in comune mucche e balene? - Il giornale del mare
Skip to content Mucche e balene a quanto pare hanno in comune qualcosa in piu’ rispetto alle conoscenze sull’evoluzione di questi mammiferi. Tutti i mammiferi hanno avuto un antenato comune che si è evoluto sulla terra e poi si è trasferito a vivere in acqua.
Recenti studi filogenetici hanno rivelato che le balene hanno molto in comune con il gruppo degli ungulati (mucche, pecore, cervi, cammelli ed ippopotami). Gli indizi che hanno portato a questa interessante scoperta provenivano dagli intestini delle balene , che nonostante siano esse carnivore (si nutrono normalmente di plancton, cefalopodi e pesci) hanno caratteristiche similari ai ruminanti terrestri, in particolare alle mucche .
Peter Girguis , biologo presso la Harvard University, ha lavorato ad uno studio sulla flora intestinale delle balene pubblicando il rapporto sulla rivista Nature Communication . Per analizzare la flora intestinale delle balene gli scienziati hanno raccolto direttamente in mare le feci di questi grandi mammiferi marini.
“È stato interessante alzarsi ogni mattina per andare a cercare le feci puzzolenti delle balene , racconta con umorismo Annabel Beichman, dell’ University of California-Los Angeles, altro autore dello studio. Poi, in laboratorio abbiamo osservato un sorprendete mix batterico, molto simile anche a quello di leoni e tigri, animali terrestri carnivori. Ma erano anche diverse le comunità di batteri anaerobi simili a quelli che aiutano i ruminanti a degradare la cellulosa. Altra caratteristica in comune tra mucche e balene è un intestino multi-camera utile alla digestione dei vegetali. Ma, si sa che in mare la presenza di vegetali non è abbondante come a terra, dunque le balene sarebbero in grado, grazie ai batteri anaerobi di digerire la chitina e renderla accessibile ottimizzando il loro apporto di nutrienti.
Scroll to Top