Pheromones
In Our Time21 Feb 2019

Pheromones

Melvyn Bragg and guests discuss how members of the same species send each other invisible chemical signals to influence the way they behave. Pheromones are used by species across the animal kingdom in a variety of ways, such as laying trails to be followed, to raise the alarm, to scatter from predators, to signal dominance and to enhance attractiveness and, in honey bees, even direct development into queen or worker.

The image above is of male and female ladybirds that have clustered together in response to pheromones.

With

Tristram Wyatt Senior Research Fellow at the Department of Zoology at the University of Oxford

Jane Hurst William Prescott Professor of Animal Science at the University of Liverpool

and

Francis Ratnieks Professor of Apiculture and Head of the Laboratory of Apiculture and Social Insects at the University of Sussex

Producer: Simon Tillotson

Episoder(1086)

Karma

Karma

Melvyn Bragg and guests discuss the doctrine of Karma as developed initially among Hindus, Jains and Buddhists in India from the first millennium BCE. Common to each is an idea, broadly, that you rea...

18 Jul 202450min

Fielding's Tom Jones

Fielding's Tom Jones

Melvyn Bragg and guests discuss "The History of Tom Jones, A Foundling" (1749) by Henry Fielding (1707-1754), one of the most influential of the early English novels and a favourite of Dickens. Coleri...

11 Jul 202454min

The Orkneyinga Saga

The Orkneyinga Saga

Melvyn Bragg and guests discuss the Saga of the Earls of Orkney, as told in the 13th Century by an unknown Icelander. This was the story of arguably the most important, strategically, of all the islan...

4 Jul 202451min

Marsilius of Padua

Marsilius of Padua

Melvyn Bragg and guests discuss one of the canonical figures from the history of political thought. Marsilius of Padua (c1275 to c1343) wrote 'Defensor Pacis' (The Defender of the Peace) around 1324 w...

27 Jun 202456min

Empress Dowager Cixi

Empress Dowager Cixi

Melvyn Bragg and guests discuss the woman who, for almost fifty years, was the most powerful figure in the Chinese court. Cixi (1835-1908) started out at court as one of the Emperor's many concubines...

20 Jun 202450min

Philippa Foot

Philippa Foot

Melvyn Bragg and guests discuss one of the most significant philosophers of the twentieth century, Philippa Foot (1920 - 2010). Her central question was, “Why be moral?” Drawing on Aristotle and Aq...

13 Jun 202458min

Sir Thomas Wyatt

Sir Thomas Wyatt

Melvyn Bragg and guests discuss 'the greatest poet of his age', Thomas Wyatt (1503 -1542), who brought the poetry of the Italian Renaissance into the English Tudor world, especially the sonnet, so pr...

6 Jun 202458min

Mercury

Mercury

Melvyn Bragg and guests discuss the planet which is closest to our Sun. We see it as an evening or a morning star, close to where the Sun has just set or is about to rise, and observations of Mercury...

30 Mai 202453min

Populært innen Historie

med-egne-oyne
rss-dette-ma-aldri-skje-igjen
historier-som-endret-norge
henrettelsespodden
rss-benadet
historier-som-endret-verden
rss-katastrofe
rss-nadelose-nordmenn-gestapo
sektledere
rss-strid-de-norske-borgerkrigene
aftenposten-historie
rss-frontkjemperne
rss-bisarr-historie
rss-gamle-greier
rss-politisk-preik
rss-historiske-romanser-svik-drap-og-kjarlighet
historiepodden-ww2
historiepodden
rss-historiepodden-ww2
vare-historier