“A man who dares to waste one hour of time has not discovered the value of life”. This is a famous quote. Identified who said it?
Think you’ve found it. Yes, it’s none aside from the great Charles Darwin. To find out why this text makes its way here come, read the article.
Recently, scientists proved one of Charles Darwin’s theories of evolution for the first time nearly 140 years after his death.
Laura van Holstein, a Ph.D. student in Biological Anthropology at St John’s College, University of Cambridge, and lead author of the research published on March 18th in Proceedings of the Royal Society B, discovered mammal subspecies play a more important role in evolution than before thought.
This research now enhances us to predict which species conservationists should target protecting to prevent them from becoming endangered or extinct. Seems interesting right. Move to find more.
We call a group of animals that can interbreed freely amongst themselves as species. A few of those have subspecies that only differ by some different physical traits and their own breeding ranges.
Van Holstein said: “We are standing on the shoulders of giants. In Chapter 3 of On the Origin of Species Darwin said animal lineages with more species should also contain more ‘varieties’. She added that her research was focused on investigating the relationship between species and also the variety of subspecies proves that sub-species play a significant role in long-term evolutionary dynamics and in the future evolution of species and they always have, which is what Darwin suspected when he was defining what a species really was”.
Van confirmed Darwin’s hypothesis by examining the data gathered by naturalists over hundreds of years. She also proved that evolution happens differently in land mammals (terrestrial) and sea mammals and bats (non-terrestrial) ¬ because of differences in their habitats and differences in their ability to roam freely.
Holstein also added that the relationship between mammalian species and subspecies differs depending on their habitat. Subspecies form, diversify and increase in number differently in non-terrestrial and terrestrial habitats, and this, in turn, affects how subspecies may become species. Natural barriers like mountains could split animal groups. Marine and flying mammals have fewer barriers than their terrestrial counterparts.
The research explored the more interesting part. They wanted to understand if they may well consider the subspecies an early stage of speciation—the formation of a new species. Holstein answered that the solution was a yes but evolution can’t be solely based on the same factors in all groups as we’ve got good evidence since we have looked at the strength of the relationship between species richness and subspecies richness.
The research warned us that human impact on the habitat of animals won’t only affect us now, but will affect our evolution in the future. The impact on animals will vary depending on how their ability to roam, or range, is affected. Animal subspecies tend to be ignored, but they play a pivotal role in long term future evolution dynamics.
Van Holstein said that she would now return to give a glance and check how her findings will be used to predict the rate of speciation from endangered species and non-endangered species.
Most of the data is from Wilson and Reeder’s Mammal Species Of the world, a global collated database of mammalian taxonomy.
This is surely one of the crucial breakthroughs which help us find plenty of things, and also we’d like to bear in mind our behavior because we have an impression on what we do. Remember the old saying “What you Sow is what you Reap”.