Not exact matches
Scientists
with the USGS and Michigan State University, funded by the Great Lakes Fishery Commission, found that slower
sea lamprey growth rates during the larval phase of development may increase the odds of
sea lampreys becoming male.
During the study, environments lacking plentiful food were male - skewed,
with 78 percent of
sea lampreys becoming male after three years, whereas environments more conducive to growth produced only 56 percent males.
And indeed the 50 - centimeter - long, eellike creatures can wreak havoc on freshwater communities when they invade from the
sea,
with a single
sea lamprey able to kill 18 kilograms of fish in its lifetime.