Nibbles: Bananas, Cassava, Coconuts, Potato, Training, Wild poultry, EU regulations, Saving seeds

Breeding clubs

As in many other (most?) walks of life, there is much that professional breeders can learn from “amateurs” (i.e., farmers), and vice versa. The experience of the taro breeders’ club in Samoa is a good example of that. Danny has already blogged for us about this. There are also examples of livestock (and pet) breeders’ clubs, and plenty of them according to Google. Many more than for crops, it looks to me. I don’t know much about such livestock clubs, and would welcome more information on how successful they have been, and whether we who are more into crops can learn anything from their experience. Anyway, there’s a great discussion of the advantages of the club approach to breeding crops for pest resistance in a downloadable recent 1995 IDRC publication. It’s accompanied by a list of crops best avoided by clubs, though the Evil Fruit Lord begs to differ.

They shoot horses, don’t they?

Ok, that’s just a provocative way of introducing an interesting review in Trends in Ecology and Evolution describing how harvesting from animal populations can affect their genetic make-up. ((Fred W. Allendorf, Phillip R. England, Gordon Luikart, Peter A. Ritchie, Nils Ryman (2008) Genetic effects of harvest on wild animal populations. Trends in Ecology & Evolution. Volume 23(6):327-337.)) The following three types of genetic change are highlighted:

  1. strengthening or collapse of population structure
  2. genetic erosion
  3. selection

The take-home message is that management plans should recognize that harvesting changes not just the demography but also the genetics of populations. Very important for sustainable management of fisheries etc., but I bring it up here because it got me thinking: are any wild relatives of livestock exploited through harvesting? Things like these cute pigs, for example. And would the conclusions be very different for plants?

Nibbles: Global Food, Aid, Nettles, Women, Aquaculture, Education