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Changing Perspectives in Conservation

Thu, 18 Dec 2014 12:15:44 +0000

Our views of the importance of nature and our place within have changed dramatically over the the last century, and the prevailing paradigm has profound influences on conservation from the science that is conducted to the policies that are enacted. In a recent perspectives piece for Science, GEE’s Professor Georgina Mace considered the impacts that […]

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Function Over Form: Phenotypic Integration and the Evolution of the Mammalian Skull

Mon, 08 Dec 2014 14:05:52 +0000

Our bodies are more than just a collection of independent parts – they are complex, integrated systems that rely upon precise coordination in order to function properly. In order for a leg to function as a leg, the bones, muscles, ligaments, nerves and blood vessels must all work together as an integrated whole. This concept, […]

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Phenotypic Integration and the Evolution of the Mammalian Skull
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The Best of Both Worlds:Planning for Ecosystem Win-Wins

Sun, 16 Nov 2014 12:25:44 +0000

The normal and healthy function of ecosystems is not only of importance in conserving biodiversity, it is of utmost importance for human wellbeing as well. Ecosystems provide us with a wealth of valuable ecosystem services from food to clean water and fuel, without which our societies would crumble. However it is rare that only a […]

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Planning for Ecosystem Win-Wins
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Life Aquatic: Diversity and Endemism in Freshwater Ecosystems

Thu, 06 Nov 2014 11:22:07 +0000

Freshwater ecosystems are ecologically important, providing a home to hundreds of thousands of species and offering us vital ecosystem servies. However, many freshwater species are currently threatened by habitat loss, pollution, disease and invasive species. Recent research from GEE indicates that freshwater species are at greater risk of extinction than terrestrial species. Using data on […]

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Diversity and Endemism in Freshwater Ecosystems
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Handicaps, Honesty and VisibilityWhy Are Ornaments Always Exaggerated?

Thu, 23 Oct 2014 13:30:30 +0000

Sexual selection is a form of natural selection that favours traits that increase mating success, often at the expense of survival. It is responsible for a huge variety of characteristics and behaviours we observe in nature, and most conspicuously, sexual selection explains the elaborate ornaments such as the antlers of red deer and the tail […]

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Why Are Ornaments Always Exaggerated?
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'Evolution: a can of worms'

20 February 2011

Study by GEE's Prof Max Telford et al published in Nature

Since the turn of the twentieth century, zoologists have set out from coastal marine stations at dawn to sieve peppercorn-sized worms from sea-bottom muck. These creatures, called acoels, often look like unremarkable splashes of paint when seen through a microscope. But they represent a crucial stage in animal evolution — the transition some 560 million years ago from simple anemone-like organisms to the zoo of complex creatures that populate the world today. There are about 370 species of acoel, which gets its name because it lacks a coelom — the fluid-filled body cavity that holds the internal organs in more-complex animals. Acoels also have just one hole for both eating and excreting, similar to cnidarians — a group of evolutionarily older animals containing jellyfish and sea anemones. But unlike the simpler cnidarians, which have only an inner and outer tissue layer, acoels have a third, middle tissue layer. That is the arrangement found in everything from scorpions to squids to seals, suggesting that acoels represent an intermediate form.

That hypothesis has gained considerable support in recent years, but a report published in Nature this week1 is causing scientists to rethink the storyline.  Complete article

All links:
http://www.nature.com/nature/journal/v470/n7333/full/nature09676.html

And accompanying piece

http://www.nature.com/news/2011/110209/full/470161a.html

And podcast http://www.nature.com/nature/podcast/index-2011-02-10.html

Profile of Max Telford

Page last modified on 20 feb 11 16:56