Low oil concentrations impact Gulf fish, Jellyfishes’ rising ecosystem status and the importance of bees

Miniscule oil amounts, major biological ramifications for fish: Trace amounts of oil from a spill can have harmful and lasting biological effects, according to Andrew Whitehead, a biologist with the Louisiana State University (LSU). Whitehead, along with Fernando Galvez (also an LSU biologist), led a study examining the biological effects of low concentrations of oil on fish in the Gulf of Mexico.  Their research has previously shown...

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Bumblebee advertises infertility to avoid harassment, keep order in the colony

Bombus terrestris Credit: Alvesgaspar Researchers have found that pheromones play a key role in reproduction and social status in the buff-tailed bumblebee colony. Specifically, sterile female workers seem to advertise their infertility with extra pheromones in an attempt to ward off harassment from competing bees. The queen buff-tailed bumblebee (Bombus terrestris) lives for one cycle between winters, and in that time, the colony...

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