Scientists unravel mystery behind disease that is killing bald eagles

Scientists unravel mystery behind disease that is killing bald eagles

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Interactive Video

Science, Biology

11th Grade - University

Hard

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The transcript discusses the neurological impairment observed in birds, particularly bald eagles, which displayed symptoms like crashing into objects. Necropsies revealed brain lesions, and the condition, known as avian vacuolar myelinopathy (AVM), was linked to the invasive plant Hydrilla verticelada. Researchers identified a cyanobacteria species on the plant as the cause, but lab tests were inconclusive. A new study found that the bacteria produce a neurotoxin only when in contact with bromide, commonly found in herbicides used in man-made lakes where AVM was observed.

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2 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What was the name of the bacteria identified as responsible for the neurotoxin?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What substance do the bacteria produce neurotoxin in contact with?

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