De afstamming van den mensch en de seksueele teeltkeus, deel 2 (van 2)

A richly detailed natural‑history treatise, this work dives into the bewildering variety of secondary sexual traits among fish, amphibians and reptiles. Drawing on Darwin’s ideas, the author catalogues everything from the flamboyant colours and ornamental fins of male fish to the specialised grasping organs of sharks and rays. He describes fierce courtship combats, elaborate nest‑building rituals and the subtle differences in shape, size and hue that separate the sexes across dozens of species. The narrative blends careful observation with vivid anecdotes, making even the most technical details feel alive.

Listeners will be guided through a landscape of underwater duels, amphibian song‑calls and reptilian displays, all illustrated with precise, almost poetic language. The author’s comparative approach highlights how similar evolutionary pressures produce strikingly different solutions in each class of vertebrate. It’s a compelling glimpse into the mechanics of sexual selection, offering both scientific insight and a sense of wonder at nature’s endless inventiveness.