biology zoology blog benno meyer rochow on geophagy

On Geophagy

Biting the Dust to Live!

In 1961, Dr. Ananda S. Prasad described that some Iranian peasants near Shiraz were habitually engaging in geophagy, which means that they were voluntarily and purposefully ingesting clay. In Africa the consumption of termite soil is widely practiced as according to the Dutch entomologist Dr. Van Huis it is considered to be a carrier of medicines and therefore health-promoting. —>—>

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biology zoology blog benno meyer rochow honey bees and our food

Honey Bees and our Food

Can we survive without bees, the chief pollinator?

The great Albert Einstein, although disputed by some, is often quoted to have famously stated that if there were no bees around any more, humans would have only 4 years to survive. Whether or not he actually had made such a statement, these days honey bees are very much in the news as reports of a decline in bee populations come in from various parts of the world. —>—>

biology zoology blog benno meyer rochow selection detection

Selection Detection

The fittest survive, but what does that mean?

Even now there are still people who do not fully understand the tenet of the survival of the fittest and believe it has something to do with winners and losers of a combat and physical strength. However, that even the smallest individual could be the fittest individual perhaps under conditions of a food shortage or an availability of shelters best suitable for small individuals and that an individual which is weak, but smarter than others could become the “fittest” through the process of selection is something that needs to be emphasized. To explain natural selection, zoologists often use the example of the white and dark specimens of the peppered moth Biston betularia in England: the originally rather rare dark variety became increasingly more common as industrial pollution increased and the whitish tree trunks of birch trees turned grey with soot. When pollution levels subsided and the environment became cleaner again, it was the lighter coloured variety that gained the upper hand once more.

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