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Ten Curious Facts About Octopuses
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- Giant group of octopus moms discovered in the deep sea -- ScienceDaily.
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Temporary culture and ripening promotion method for Octopus vulgaris parents and device used in same. CNU en.
Unprecedented, massive octopus nursery found in deep sea
CNA en. That specimen belongs to a species named Pohlsepia and is on display at the Field Museum in Chicago. In other words, long before life on land had progressed beyond puny pre-dinosaur reptiles, octopuses had already established their shape for the millions of years to come. In this case, an -es is simply tacked on. So no octopi, octopodes or octopussies, Harmon Courage points out.
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Delicious tentacles? Photo by Paul Asman and Jill Lenoble.
As a result, the arms can problem solve how to open a shellfish while their owners are busy doing something else, like checking out a cave for more edible goodies. In one experiment, severed arms jerked away in pain when researchers pinched them. The ink also physically harms enemies. It contains a compound called tyrosinase , which, in humans, helps to control the production of the natural pigment melanin.
The defensive concoction is so potent, in fact, that octopuses that do not escape their own ink cloud can die.
CN201127228Y - Artificial octopus nest for propagation and culture - Google Patents
To survive in the deep ocean, octopuses evolved a copper rather than iron-based blood called hemocyanin , which turns its blood blue. This copper base is more efficient at transporting oxygen than hemoglobin when water temperature is very low and not much oxygen is around. But this system also causes them to be extremely sensitive to changes in acidity. Accordingly, researchers worry about what will happen to the animals as a result of climate change-induced ocean acidification.
Mating and parenthood are brief affairs for octopuses, who die shortly after. The species practices external fertilization.
Multiple males either insert their spermatophores directly into a tubular funnel that the female uses to breathe, or else literally hand her the sperm, which she always accepts with one of her right arm researchers do not know why. Afterwards, males wander off to die. As for the females, they can lay up to , eggs, which they obsessively guard and tend to. Prioritizing their motherly duties, females stop eating.
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Her body undertakes a cascade of cellular suicide, starting from the optic glands and rippling outward through her tissues and organs until she dies. Check out Octopus! Octopus has been a popular food item in East Asia, Spain, Greece and other countries for centuries, and recently, it has gained popularity in the U.