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12 December 2013 1:00 pm ,
Vol. 342 ,
The iconic 125-year-old Lick Observatory on Mount Hamilton near San Jose, California, is facing the threat of closure...
Recent results from the Curiosity Mars rover have helped scientists formulate a plan for the next phase of its mission...
A new, remarkably powerful drug that cripples the hepatitis C virus (HCV) came to market last week, but it sells for $...
In pretoothbrush populations, gumlines would often be marred by a thick, visible crust of calcium phosphate, food...
Evolutionary biologists have long studied how the Mexican tetra, a drab fish that lives in rivers and creeks but has...
Victorian astronomers spent countless hours laboriously charting the positions of stars in the sky. Such sky mapping,...
In an ambitious project to study 1000 years of sickness and health, researchers are excavating the graveyard of the now...
Stefan Behnisch has won awards for designing science labs and other buildings that are smart, sustainable, and...
- 12 December 2013 1:00 pm , Vol. 342 , #6164
- About Us
Chronicler of a Bug's Life
16 April 1999 7:00 pm
is the birthday of Sir Vincent Wigglesworth, an English entomologist born in 1899 who elucidated the physiology of insect metamorphosis. Wigglesworth discovered a number of important insect hormones, including a crucial growth hormone made in the brain and a hormone that prevents juvenile insects from developing adult characteristics until they reach the right larval stage.
Wigglesworth learned how to manipulate levels of several hormones to radically alter the development of his insect subjects. Based on this work he formulated a coherent theory of insect metamorphosis, maintaining that hormones selectively activate particular genetic components, which in turn shape the insect's morphology and development. His 1934 textbook, Insect Physiology, is considered by many to be the foundation for this field.
Wigglesworth was knighted in 1964. He died in 1994.
[Source: Britannica Online]