Julian Finn and Mark Norman of Museum Victoria in Melbourne have reported (http://www.sciencedaily.com/releases/2009/12/091214121953.htm) what they think is the first example of tool use in an invertebrate. They observed several specimens of an octopus Amphioctopus marginatus, in the seas around North Sulawesi and Bali, collecting half coconut shells that had been disposed of by vendors and then carrying them to 'home' locations. When they arrived at their chosen spot, they assembled two halves to make "a spherical hideout". There is no doubt that the octopus is amongst the most intelligent of the animals that lack a back-bone (they are probably brighter than many fish, amphibia and reptiles). The behaviour seems to be an adaptation of the cephalopod using discarded mollusc shells.
This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Wednesday, 16 December 2009
Octo Einstein
Julian Finn and Mark Norman of Museum Victoria in Melbourne have reported (http://www.sciencedaily.com/releases/2009/12/091214121953.htm) what they think is the first example of tool use in an invertebrate. They observed several specimens of an octopus Amphioctopus marginatus, in the seas around North Sulawesi and Bali, collecting half coconut shells that had been disposed of by vendors and then carrying them to 'home' locations. When they arrived at their chosen spot, they assembled two halves to make "a spherical hideout". There is no doubt that the octopus is amongst the most intelligent of the animals that lack a back-bone (they are probably brighter than many fish, amphibia and reptiles). The behaviour seems to be an adaptation of the cephalopod using discarded mollusc shells.
Sunday, 13 December 2009
Birder's Bonus 62
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Lots of activity by mobs of Long-tailed tit (Aegithalos caudatus) in Gorseinon and a male Bullfinch (Pyrrula pyrrula) on the prowl in Bynea. Also news from the UK British Trust for Ornithology suggesting that some 16 bird species appear to live longer than previously thought (http://www.timesonline.co.uk/tol/news/science/biology_evolution/article6954742.ece). They put this new information down to having developed better rings (there is a bit of a debate about whether rings reduce the efficiencies of these animals). Amongst the new record holders was a Bar-tailed godwit (Limosa lapponica) that lived (it's now an ex-godwit) for 34 years (the previous record for the species was 32 years).Thursday, 10 December 2009
Jumping Jacks Flash (It's a Gas, Gas, Gas)!!
Wednesday, 9 December 2009
It's a No Brain(coral)er!
The propaganda is flying in connection with the Copenhagen Climate Change conference. One of the more biological and effective is a little item by Earth Watch in association with the Zoological Society of London (http://www.youtube.com/zslvideo) on the potential demise of coral reefs (there are several versions of varying length). The footage has been shot in real locations and one can't really argue with the basic premise that these marine structures are in all probability on the way out. Check it out and see what you think. You might also want to watch the 10 minute version.
Monday, 7 December 2009
Seeing the Changes 250
Wonderful, Wonderful Copenhagen!
Friday, 4 December 2009
Taking a Pop at Population
A new initiative, the Optimal Population Trust, has been advocated by Saint David (Attenborough) and others (http://www.guardian.co.uk/environment/2009/dec/03/carbon-offset-projects-climate-change). It enables rich nations and their folk to offset their carbon emissions, not by planting trees, but by funding birth control in parts of the world where people currently have no access to it. The funding would apparently only be directed to people who want contraception (it has been estimated that there are about 80m unwanted pregnancies per year in such locations). The rationale behind the scheme is the calculation that spending £4 on birth control saves around a tonne of carbon dioxide in emissions whereas the same savings would require £8 to be spent on tree planting, £15 on wind power, £31 on solar energy and a massive £56 on hybrid vehicle technology. You get a bigger bang for your buck! It is certainly the case that human overpopulation is a major contributor to current environmental problems (the total savings generated by curtailing population growth would actually be greater than simply reducing greenhouse gas emissions). It will be interesting, however, to see how religious and political groups respond to this suggestion. I suspect it will be regarded as interference in areas supposedly taboo to science.
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