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Field note

Electric eel in 1880s: Organ as prep

[188] [more-electric-eel-88] In 1880s, the field log for Electric eel is headed “Organ as prep.” The figure kept beside that heading is 1950. It is a count or a date from the work, not a rank of the species’ worth. A zoo birthday card does not replace the log. de Santana et al. named E. voltai and E. varii beside E. electricus.

Amazon knifefishes whose stacked electrocytes taught Humboldt, Volta arguments and a 2019 species split. No. It is a gymnotiform knifefish. The body plan and voltage organ are South American, not Anguilliform. A 2019 Nature Communications paper split Electrophorus into three: E. electricus, E. voltai and E. varii. Voltage and DNA both argued for the split.

E. voltai has been measured near 860 V. That is a prey-stun and defence pulse, not a household-current analogy that holds in every tank. What did Humboldt actually do in 1800? His account of horses herded into a pool of eels became a European science anecdote. Later readers treated it as a method; it was also travel theatre.

Did electric eels inspire the battery? Volta and Galvani debates used animal electricity. Electrophorus was a New World exhibit in that argument, not the sole inventor of the pile. A high-voltage volley can freeze prey; a weaker field maps the night water. Kenneth Catania high-speed videos in the 2010s showed doublets that twitch hidden fish.

Keep 1880s, “Organ as prep,” and 1950 together or the note on Electric eel stops being that year’s record.1880s

Figures to keep

Year of the note
1880s
Figure to keep
1950
Species
Electric eel
Line in the log
Organ as prep

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