A pheromone outweighs temperature in influencing migration of sea lamprey

Abstract

Organisms continuously acquire and process information from surrounding cues. While some cues complement one another in delivering more reliable information, others may provide conflicting information. How organisms extract and use reliable information from a multitude of cues is largely unknown. We examined movement decisions of sea lampreys (Petromyzon marinusL.) exposed to a conspecific and an environmental cue during pre-spawning migration.