Elephants may have ingested toxins produced by bacteria found in waterholes.
The mysterious death of 350 elephants in the Okavango delta between May and June baffled conservationists, with leading theories suggesting they were killed by a rodent virus known as EMC (encephalomyocarditis) or toxins from algal blooms.
Local sources suggest 70% of elephants died near water holes containing algal blooms, which can produce toxic microscopic organisms called cyanobacteria. Toxins were initially ruled out because no other species died – except for one horse – but scientists now think elephants could be particularly susceptible because they spend a lot of time bathing and drinking large quantities of water.
A spokesperson from the UK government’s Animal and Plant Health Agency (APHA) said: “Our world-leading scientists are currently running tests on samples sent from Zimbabwe, and will share findings with Zimbabwe Parks as soon as possible.” ...
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