天地逃生电影在线观看:鸭子性交的秘密

一项研究将揭开鸭子性交的秘密！

In case you're unaware, duck sex is perhaps the singularly horrific event of the animal kingdom, replete with labyrinthine vagina dentata, explosive erections, and the occasional dalliance with necrophilia.

也许你不知道，鸭子的性交是动物王国里非常恐怖的事情。包括阴道里长牙齿，爆炸性的勃起，还有时常发生的想恋尸癖一样的调情。

Now, two biologists from the University of Massachusetts, Amherst are launching a project to measure the speed of the male duck erection. Their goal? To learn how rapid-fire duck penises affect their reproductive evolution.

两位马萨诸塞大学安姆斯特分校的生物学家发起了一项课题，测试雄性鸭子勃起的速度。他们的目的是？为了研究鸭子勃起的速度如何影响了它们繁殖的进化。

Biologists Patricia Brennan and Diane Kelly have kicked off the Duck Force project at Rocket Hub to raise funds to explore the terrific speeds of duck intercourse. Here's their fund-raising video and sales pitch:

这两位生物学家在火箭中心发动了这项课题，来筹集资金探索鸭子性交的可怕速度。下面是他们的资金筹集录像和广告文案

A duck pond in the breeding season is like a singles bar on steroids — rife with sexual conflict. Males and females pair off, but male ducks also force sex on females that are not their mates, sometimes injuring or even killing them.

交配季节的水池看起来像鸭子们的单身酒吧，到处都是荷尔蒙的纷争。雄鸭雌鸭出双入对，不过雄鸭子也会对其它不是自己伴侣的母鸭子强行做爱。有的时候这过程很痛苦，甚至会杀死她们。

A few years ago, one of us (Patty Brennan) discovered that these extreme sexual behaviors have sparked an evolutionary arms race between male and female ducks – a race that has changed the shape of their reproductive organs. Females evolved twisty, complicated oviducts that make it difficult for males to put sperm near their eggs. ?Males countered by evolving long and twisty penises that rapidly inflate inside the oviduct. The bends and blind alleys in the oviduct seem to be effective at keeping out sperm from unwanted males. But during one of her experiments, Patty noticed that an inflating drake's penis could burst through a silicone model of an oviduct.

几年前，我们的一位同事发现，这些极端性行为导致雄鸭和雌鸭之间开展了激烈的进化竞赛，甚至改变了生殖器官的形状。雌鸭进化出了扭曲而复杂的输卵管，雄鸭的精子很难靠近她们的卵子。与此同时，雄鸭演化出了又长又弯曲的阴茎，能很快膨胀，进入输卵管。输卵管的弯弯曲曲似乎有效地抵制了雄性的精子。不过在后来的一个研究中，帕提科学家发现一个膨胀起来的阴茎可以轻易穿透一根硅胶做的输卵管模型。

That made her wonder whether the forces produced by explosive eversion could be one factor driving the evolution of the female's twisty oviduct. To find out, Patty is teaming up with biomechanics expert Diane Kelly to measure the speed and force of the inflating duck penis and determine how it might affect the female's reproductive tract.

于是帕提感到好奇：爆炸性勃起的力量，是不是雌鸭子进化出弯弯曲曲的输卵管的原因之一呢？为了证实这一点，帕提和生物力学专家戴安娜凯利一组，测量雄鸭阴茎膨胀后的速度和力量，看它们是否影响了雌鸭的繁殖过程。

Your contributions will let us travel to a farm in Quebec, Canada that has trained male ducks to provide sperm for artificial insemination. We will let these ducks copulate with a series of transparent model oviducts fitted with force transducers – the process is harmless to the ducks, and isn't much different from the way the farmers collect sperm. As each duck everts his penis, we will simultaneously film it with high-speed video and measure how hard it hits the wall of the model oviduct [...] If successful, this project will provide the first detailed measurements of the physical forces generated by a penis during copulation. It will take the first steps toward testing whether copulatory forces help drive the evolution of those crazy twists in the female's oviduct. We expect to present these results in talks at scientific conferences and write them up in a paper for a peer-reviewed scientific journal.

您对这个课题的捐赠会帮助我们来到加拿大魁北克的一个农场。在这里，雄鸭受到训练，为人工受精试验提供精子。我们让这些雄鸭和透明输卵管模型交配，并在输卵管中放置力量感应器。这个过程对雄鸭无害，和鸭农收集精子的过程差不多。鸭子的阴茎起反应时，我们会用高速摄像机录像，之后测试它们撞击阴茎模型的力量。试验如果成功，可以提供第一批阴茎在交配过程中产生多大力量的数据。这会让我们进一步了解，性交的力量是否推动了雌鸭输卵管的进化。我们希望能在科研会议商展示这些成果，并发表在专业科学期刊上。