The sex life of Octopoteuthis deletron — O. deletron, if you prefer — is a cruelly hit-or-miss affair, according to candid footage of the deep-sea squid in its element, unveiled yesterday.
No foreplay, no tender caresses, no fond farewells until the next union, just a desperate drive to reproduce followed by a glancing quickie and an early death. And that’s when things go well.
Scientists suspect some specimens can drift a lifetime without ever encountering a potential sex-partner, much less a soul-mate.
Here the problem: It’s dark. That may not be an impediment to intimacy in an aquarium, but in the open sea at 800m deep, it can make the search for companionship long and lonely.
“In the deep, dark habitat where O. deletron lives, potential mates are few and far between,” a team of researchers said in a study, published in the journal Biology Letters.
Even when these solitary, bug-eyed cephalopods do run into each other, they probably can’t tell a he-squid from she-squid, prompting males to proposition the first shapely body that comes along, no matter what its sex.
That, in any case, is what Hendrik Hoving of the Monterey Bay Aquarium Research Institute in Moss Landing, California, and colleagues suspected when they set out to film the creatures in their natural setting.
O. deletron’s reproductive cycle was already known. During opposite-sex mating, males use a long tentacle-like appendage to deposit small sperm-laden sacs, called spermatangia, onto females. The sacs release sperm into the female’s tissue, et voila, the cycle begins anew, leaving the males to die shortly after a single reproductive act.
However, Hoving had noticed empty spermatangia on the surface of dead males caught in fishing nets, and wondered how they got there.
To find out, he used remotely operated vehicles to explore the deep waters — 400m to 800m — of Monterey Submarine Canyon off the central California coast.
The video footage captured nine male and 10 female squids with clusters of spermatangia attached to their bodies, front and back.
“Males were as likely to be found mated as females,” the study concluded. The sperm-carrying sex, in other words, “routinely and indiscriminately mates with both males and females.”
One thing is sure, researchers said, “this behavior further exemplifies the ‘live fast, die young’ life strategy of many cephalopods.”
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