A Beetle That Runs on 48-Hour Clock for Mating Purposes; Mysterious Because There Are No Known 48-Hour Cycle Cues in Nature

Holotrichia parallela, the large black chafer beetle, is a serious agricultural pest in Asia.

Life on Earth runs on a 24-hour cycle as the planet turns. Animals and plants have built-in circadian clocks that synchronize metabolism and behavior to this daily cycle. But one beetle is out of sync with the rest of nature. A new study, published January 18, 2023 in Current Biology, looks at a beetle with a unique, 48-hour cycle. The open-access article is titled “Circabidian Rhythm of Sex Pheromone Reception in a Scarab Beetle.” The large black chafer beetle, Holotrichia parallela, is an agricultural pest in Asia. Every other night, the female beetles emerge from the soil, climb up a host plant and release pheromones to attract males.

Login Or Register To Read Full Story