Sentences with phrase «different flea populations»

This is just part of different flea populations evolving to avoid our control.

Not exact matches

Unlike many populations of animals that undergo genetic changes over numerous generations and improve their camouflage against the environment, sand fleas from the different beaches begin life as a planktonic larval stage and so are likely to come from the same gene pool.

So researchers put infected fleas on different feeding schedules and observed the impact on the populations of parasites inside them.

Only one insecticide, the organochlorine dialdrin, had 100 % mortality across all flea populations, while the next four effective insecticides had very different susceptibility profiles across the different populations.