In the animal world, some events may seem strange to those who study it. Some species, for example, tend to die shortly after reproduction, as they begin a process of self-destruction. This happens close to the time the eggs hatch.
Now, scientists have discovered why the octopuses die after laying eggs. Check it out!
Hormonal changes determine octopus behavior
Previously, researchers were unable to explain exactly why mothers octopus die after laying eggs. However, recently, some answers have solved this question.
The chemical components involved in this loss of control are now known. According to research, the animal’s behavior changes due to the deregulation of steroid hormones and the use of cholesterol as a production source.
When the female lays her eggs, she begins to exhibit aggressive behavior, colliding with rocks and possibly tearing off a limb. Although it all seems very scary, some theories explain this act as a way of protecting the young from predators by faking her own death.
Others believe that this self-destruction is intended to provide nutrients transferred from the body to the water after the mother’s death, which are then passed on to the eggs.
Octopuses are animals cannibals and, therefore, if possible, the older ones can eat all the other’s offspring.
The person who discovered this mechanism was Jerome Wodinsky in 1977. The psychologist from Brandeis University identified a mechanism located near the animal’s eyes. Apparently, if this nerve were cut, the mothers would leave the eggs and return to their normal lives, as it is this nerve that controls the cascade of self-mutilation.
Current studies published in the journal Current Biology focuses on the glands and chemical compounds released by the female. The research group includes Z. Yan Wang, assistant professor of psychology and biology at the University of Washington.
