Benjamin Carr, Ph.D. 👨🏻💻🧬<p><a href="https://hachyderm.io/tags/Overfishing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Overfishing</span></a> has caused <a href="https://hachyderm.io/tags/cod" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cod</span></a> to halve in <a href="https://hachyderm.io/tags/bodysize" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bodysize</span></a> since 1990s, study finds<br><a href="https://hachyderm.io/tags/Scientists" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Scientists</span></a> have uncovered <a href="https://hachyderm.io/tags/genomic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>genomic</span></a> evidence that intensive <a href="https://hachyderm.io/tags/fishing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fishing</span></a> has driven rapid <a href="https://hachyderm.io/tags/evolution" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>evolution</span></a> changes that have contributed to these fish roughly halving in average body length since the 1990s. The "shrinking" of cod, from median mature body length of 40cm in 1996 to 20cm in 2019, has a genetic basis and human activities have left a profound mark on the population's <a href="https://hachyderm.io/tags/DNA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DNA</span></a>, the study concluded.<br> <a href="https://www.theguardian.com/environment/2025/jun/25/cod-shrinking-size-overfishing-study" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/20</span><span class="invisible">25/jun/25/cod-shrinking-size-overfishing-study</span></a></p>