News Animals

A ghost gene leaves ocean mammals vulnerable to some pesticides

Manatees, for example, don't produce a protein that breaks down organophosphates

two manatees

GHOST GENE  The ancestors of manatees and other marine mammals lost working versions of certain genes millions of years ago. One of those genes protects land mammals against some harmful pesticides.

Robert K. Bonde/USGS–Gainesville

By Cassie Martin

- More than 2 years ago

A gene that helps mammals break down certain toxic chemicals appears to be faulty in marine mammals — potentially leaving manatees, dolphins and other warm-blooded water dwellers more sensitive to dangerous pesticides.