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<meta itemprop="url" content="https://www.enn.com/articles/29620-elephants-evolve-smaller-tusks-due-to-poaching" /> </h1> </header> <aside class="article-aside article-aside-full"> <dl class="article-info muted"> <dt class="article-info-term"> Details </dt> <dd class="hidden"></dd> <dd class="createdby hasTooltip" itemprop="author" title="Written by "> <span itemprop="name">Environmental Graffiti</span> <span style="display: none;" itemprop="publisher" itemscope itemtype="https://schema.org/Organization"> <span itemprop="logo" itemscope itemtype="https://schema.org/ImageObject"> <img src="//1408440223.rsc.cdn77.org/templates/ja_teline_v/images/logo.png" alt="logo" itemprop="url" /> <meta itemprop="width" content="auto" /> <meta itemprop="height" content="auto" /> </span> <meta itemprop="name" content="Environmental Graffiti"> </span> </dd> <dd class="published hasTooltip" title="Published: "> <i class="icon-calendar"></i> <time datetime="2008-01-20T09:40:00+00:00"> 20 January 2008 <meta itemprop="datePublished" content="2008-01-20T09:40:00+00:00" /> <meta itemprop="dateModified" content="2008-01-20T09:40:00+00:00" /> </time> </dd> </dl> </aside> <section class="article-intro-media"> <div class="pull-left item-image"> <a href="/articles/29620-elephants-evolve-smaller-tusks-due-to-poaching" title=""> <span itemprop="image" itemscope itemtype="https://schema.org/ImageObject"> <img src="http://www.enn.com/image_for_articles/29620-1.jpg/medium" alt="" itemprop="url"/> <meta itemprop="height" content="auto" /> <meta itemprop="width" content="auto" /> </span> </a> </div> </section> <section class="row article-navigation top"> </section> <section class="article-full has-article-tools"> <div class="article-tools"> <div class="typo-tools"> <h6>Typography</h6> <ul> <li data-fss="Smaller,Small,Medium,Big,Bigger"> <a class="btn" href="#" title="Smaller Font" data-value="-1" data-target=".article" data-action="nextPrev" data-key="fs"><i class="fa fa-minus"></i></a> 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class="sharing-tools"> <h6>Share This</h6>  <div class="addthis_inline_share_toolbox"></div> </div> </div> <div class="article-content-main"> <blockquote class="article-intro" itemprop="description"> A speciesâ€™ evolution has long been thought to take thousands of years to produce seemingly minor changes. It appears that in at least one case, however, evolution is occurring at what seems like jet speed. In the last 150 years, the worldâ€™s elephant population has evolved much smaller tusks. </blockquote> <section class="article-content" itemprop="articleBody"> <p>A speciesâ€™ evolution has long been thought to take thousands of years to produce seemingly minor changes.</p><p>It appears that in at least one case, however, evolution is occurring at what seems<span id="more-711"></span> like jet speed. In the last 150 years, the worldâ€™s elephant population has evolved much smaller tusks.</p><p>The average size of an African elephantâ€™s tusks has gone down by half in the last century and a half. Indian elephants have undergone a similar tusk size reduction.</p><p>Experts believe the rapid evolution of the massive land mammals is due to poaching. Zoologists from Oxford University suggest that ivory poachers, who go for the largest males with the largest tusks, have caused the breeding behaviors of the animals to change rapidly in a short time. </p><p>!ADVERTISEMENT!</p><p>The largest male African elephants have the largest tusks. These tusks are extremely important in elephant behavior, with the largest tusks usually resulting in more successful intimidation of smaller males or winning fights for female elephants. But when the largest animals are killed, it changes the breeding patterns of the animals. In short, without the largest males for competition, the smaller males with their smaller tusks will breed more successfully, and their offspring will have smaller tusks. </p><p>Study co-author Iain Douglas Hamilton of Save the Elephants said in the Telegraph: â€œWhat appears to be the case is that average tusk sizes have decreased greatly since the mid-19th century. The data comes from the trade statistics and from records of hunters around Africa who find that large trophies are very much harder to find. 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