biology zoology blog benno meyer rochow testosterone

What the cockerel needed to turn into a cock

The story of testosterone

Every day on my way to my office in the Electron Microscopy Unit of the University of the West Indies in Jamaica, I passed a small monument, dedicated to a famous British scientist. It was Ernest Henry Starling, who was buried in Jamaica in 1927 and commemorated with that monument. Starling was a physiologist who had made significant contributions to our understanding of the function of the heart, muscles, and kidneys, but who is perhaps remembered most for having coined the word “hormone” for the chemical messengers in human and animal bodies. —>—>

zoology biology benno meyer rochow science blog young

Parabiosis Shows the Path

To a younger body perhaps?

People spend millions if not billions worldwide to look younger, to feel younger, to be rejuvenated. Maybe I was different, because I always wanted to look older and for that reason stopped shaving when I was 21. But fact is that the business based on people wanting be younger is huge. Yet, very few want to look like children again or possess child-like features and almost nobody wants to be a baby once more; it’s young but not too young. —>

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Voices

Could there be a reason why females have high and men low voices?

Some ants, like the tropical Pogonomyrmex, produce faint sounds. But since ant colonies are composed of only female individuals, the latter alone are capable of making sounds in these insects. When some sneaky males occur, it is only for the purpose of reproduction. But a situation like this is exceptional. Had the ancient philosopher Xenarchos of Seleukia known of it, it would have surprised him greatly, for he is credited with that famous (albeit somewhat impolite) exclamation: “Cicadas have such happy lives, for they have silent wives!” Continue reading