Category: Threats

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Culling badgers backfires

There’s been a lot of news and discussion recently in the UK on animal diseases such as mad cow, foot and mouth, and bluetongue. Here’s another one to worry about: bovine tuberculosis. A paper just out in the Journal of Applied Biology explores the interaction between agricultural and wild biodiversity in the context of the spread of this disease in the UK ((H.E. Jenkins et al. (2007) Effects of culling on spatial associations of Mycobacterium bovis infections in badgers and cattle. Journal of Applied Ecology 44 (5), 897–908. doi:10.1111/j.1365-2664.2007.01372.x)).

Bovine tuberculosis can be spread by badgers, which have therefore been routinely culled for some years in many areas. But it turns out that badgers are in fact more mobile and adventurous in areas where their numbers have been thinned out. Which means they are most effective in spreading tuberculosis to cattle in exactly those areas where measures have been taken which were supposed to control the disease. The law of unintended consequences in action, I suppose.

Meanwhile, a big cull of feral pigs is on in Australia. ((Our occasional contributor Michael Kubisch wrote an interesting post on feral animals a few months back.)) Is this going to have some unintended consequences too?

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Rice, China and climate change

rice-yield.png
The map shows rice yield in China by county for 1996 ((Thanks to Robert Hijmans, IRRI.)). The pattern it shows has changed significantly in the past 20 years, and will probably change more in the next 20. Climate change will drive that to some extent, of course. But not just climate change. Robert Hijmans, a geographer at IRRI, has a nice feature in Rice Today discussing the “relocation of rice production in China.”

Remember Jeremy has an omnibus post about Chinese agrobiodiversity.

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Indian fruit genebank threatened by democracy

NB: Update here.

We interrupt this blog for a public service announcement. The Indian Express is reporting a proposal by the government of Jharkand State in northeast India to bulldoze the field genebanks of the Horticulture and Agro Forestry Research Programme. More than 20 years of work and thousands of fruit varieties are set to be destroyed in order to create bungalows for Members of Parliament.

What to do? This makes the UK’s attempts to dump its apple and pear collection look positively suave. We’ve alerted people who might have some influence. But seriously, what else can be done? Is anyone in Jharkand taking this up? How about the rest of India? We’re rank amateurs at activism. Advise us.

We wouldn’t normally repost an entire item, but this is important enough that we’re making an exception. So here goes.

Continue reading “Indian fruit genebank threatened by democracy”