George Parker Bidder (21 May 1863 – 31 December 1953) was a British marine biologist who primarily studied sponges. He was the President of the Marine Biological Association (MBA) from 1939 to 1945.
In 1932, Bidder made a major contribution to the field of biogerontology by proposing that senescence was the effect of a "regulator" responsible for ending growth.[4][5] This theory, known as "Bidder's hypothesis" has been refuted in numerous experiments, starting with Alex Comfort's 1963 study on guppy, a species that ages while growing.[6] Nonetheless, Bidder's hypothesis might be true for some species as a "private" mechanism of ageing.[according to whom?]
Between 1904 and 1906, Bidder conducted research that proved the East-to-West flow of North Sea currents, by releasing some 1,000 messages in bottles, designed to float a short distance above the sea bed. Finders were requested, in English, Dutch and German, to send a postcard enclosed in the bottle to the United Kingdom's Marine Biological Association in Plymouth, for a shilling reward.[7] The majority were recovered just a few months later, but one was found on the German island of Amrum, as late as April 2015, and its postcard was duly returned to the MBA.[8]Guinness World Records confirmed it to be the "oldest message in a bottle", as of March 2016.[9][a]
Poetry
From his youth, Bidder dedicated much of his free time to writing poems, the most famous of which is "Merlin's Youth" (1899).[10]
Notes
^There are now known message-in-a-bottle examples that are both older (date launched) and having longer duration (time between launch and recovery); see Message in a bottle#Long-duration events.
^Calow, P (1978). "Bidder's hypothesis revisited. Solution to some key problems associated with general molecular theory of ageing". Gerontology. 24 (6): 448–58. doi:10.1159/000212285. PMID689379.