In order to understand how the structure and composition of euphausiid assemblages are affected by changes in environmental conditions caused by El Niño and La Niña events in the Colombian Pacific, euphausiids present in zooplankton samples obtained during

We describe the seasonal changes in the horizontal and vertical distribution and abundance of euphausiid species associated with seven physical and 61 biological variables in the Gulf of California (24–31°N). Euphausiid community structure was explored

Reproductive biology and early life phases of tropical broadcast spawning krill are largely unknown worldwide. This investigation provides the first data on the reproductive period, brood size, embryo and nauplius–to–metanauplius morphology, biometry,