Some of the "20 Things You Didn't Know About Mating"

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Danya (imported)
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Some of the "20 Things You Didn't Know About Mating"

Post by Danya (imported) »

A few of the "20 Things You Didn't Know About Mating"

from Discover Magazine, April 2008, by Dean Christopher, pg. 80

1. Life emerged on earth about 3.8 billion years ago, but sex did not evolve until more than 2 billion years later. Dirty limericks emerged only quite recently, geologically speaking.

6. Barbary macaques (note: a type of monkey -Danya) have a distinctive way to get their mates to make a sperm donation: yelling. If the female does not shout, the male almost never climaxes.

7. How do we know this? German primatologist Dana Pfefferle watched a group of macaques, counting the females' yells and the males' pelvic thrusts. She said this work is "quite weird, but it's science."

11. The tiny male paper nautilus, an octopus, impregnates the much larger female by shooting his penis (a modified tentacle) into her - and leaving it there.

15. Biologists at the University of California at San Francisco (figures, where else?? :D -Danya) have found that male fruit flies exposed to high levels of alcohol become hypersexual and try to court practically anything with wings, including other male fruit flies. Eventually the revelry turns into a dysfunctional orgy, with "a chain of males chasing each other, says one insect expert.

16. As the flies get increasingly tanked, their chance for mating success keeps dropping. This is one more reason why the fruit fly is a great model for studying humans.
Free to be ME (imported)
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Re: Some of the "20 Things You Didn't Know About Mating"

Post by Free to be ME (imported) »

Danya (imported) wrote: Wed Mar 26, 2008 7:50 pm 11. The tiny male paper nautilus, an octopus, impregnates the much larger female by shooting his penis (a modified tentacle) into her - and leaving it there.

Hmm

Three things wrong here It is NOT an Octopus and the arm is never refered to as that and does not shoot it into her. However some Squids do jab thier reproductive arm into the female and the sperm packets migrate to her reproductive organs a female Giant squid pulled up a few years ago had strings of sperm packets embedded in her arms and mantle.

Yes i'm a nit picker about things. Thanks to my slight case of aspergers syndrome.

From Scripps:

Paper nautilus, pelagic, surface-dwelling cephalopod mollusk of the genus Argonauta. Like the related octopus, the paper nautilus has a rounded body, eight tentacles, and no fins. It is so named for the beautiful papery shell, up to 8 in. (20 cm) long, that surrounds the female while she broods her eggs. This structure, actually a calcareous egg case, is secreted by the tips of the female's two greatly expanded dorsal tentacles prior to egg laying. After she deposits her eggs in the floating egg case, the female takes shelter in it herself; she is usually found with her head and tentacles protruding from the opening, but she retreats deeper inside if disturbed. The much smaller male, which lacks the modified dorsal tentacles, often shares the shell of a female. It was once believed that the paper nautilus, or argonaut, uses the expanded tentacles, extended from the shell, as a sail. The true nautilus (genus Nautilus) belongs to a different cephalopod order. The paper nautilus is classified in the phylum Mollusca, class Cephalopoda, order Octopoda.

The male produces packets of sperm which he reaches into his body mantle useing a modified arm to retrieve the sperm packs it is not a penis. The males use the modified arm, the hectocotylus, to transfer sperm to the female. The arm is inserted into the female's pallial cavity, then is detached from the male. The hectocotylus was originally described as a parasitic worm.
Uncle Flo (imported)
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Re: Some of the "20 Things You Didn't Know About Mating"

Post by Uncle Flo (imported) »

And all this time I thought an octopus was an animal with eight testicles. --FLO--
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