Skip to main content

The mechanism that female dolphins developed to protect themselves from males

Known for being one of the most intelligent animals on the planet, dolphins are fascinating creatures and a new study confirms that not only their social abilities are interesting.The recent research indicates that a species of female dolphins has developed a mechanism in their genitals to protect themselves from unsolicited advances by males.Find out how it works.

This protects female dolphins from males looking to mate

Female bottlenose dolphins have evolved to the point where they can protect themselves from fertilization by some males , according to a group of researchers at Georgetown University.

Experts have explained that certain species of marine animals have extensive vaginal folds that hinder the entry of the penis and act effectively as a reproductive barrier.

Bottlenose dolphins males form strong bonds with two or four others to defend themselves against the competitors of their females.

When a female dolphin comes into contact with that group, it does not have many options on who mates with she and may end up pairing with each other .

But researchers have discovered that bottlenose dolphins have developed a secret weapon to make the mating Be more complicated for certain males.

According to Janet Mann, a researcher at the prestigious Georgetown University in Washington DC, female dolphins of this species may not choose who they copulate with, but they can decide what sperm fertilizes your egg.

The complex vaginal structure of bottlenose dolphins allows them to make subtle movements during sexual intercourse to prevent the male from successfully fertilizing it , since the penis moves incorrectly.

Both those of the Bottlenose ends such as common porpoises have developed these vaginal folds, while common dolphin vaginas and common seals have been developed to allow males access.

The mechanism that female dolphins developed to protect themselves from males

Researcher Dara Orbach, from Dalhousie University in Canada, explained that bottlenose dolphins may seem passive, but that idea is very far from reality.

Second Orbach, observing the reproductive anatomy, it is possible to see that they have all kinds of cryptic ways to control paternity .

For the study, Orbach obtained the genitals of the cetaceans that had died of natural causes and created silicone molds of his vaginas, which revealed complicated folds and spirals.

This is an «n An unparalleled level of vaginal diversity that we did not know existed before.being erect and used computed tomography to examine how they fit in the female vaginas.

Without a doubt, some amazing features that demonstrate how wise nature is.

Also impressed you?

Images: Wikimedia Commons

Comments

Popular posts from this blog

The world's longest insect bred by Chinese scientists

Scientists in China report that they have found the longest insect in the world .A surprising new species that reaches about 64 centimeters long.His talent with camouflage made the search difficult, but experts they persevered and managed to find it.Discover it with us. China is the home of the longest insect in the world It is a new species of stick insect of the genus Phryganistria that measures more than half a meter .The media in China covered the discovery of the specimen, which was made during a field trip in the Guangxi Zhuang region in 2014, but has now been declared the longest in the world. The 62.4 centimeter long creature s operates on the previous record , another stick insect discovered in 2008 (and called Phobaeticus chani or Chan's megastick) for almost six centimeters. The specimen was discovered by Zhao Li of the West China Insect Museum.Zhao dij or that had been hunting the animal for years , after hearing reports from farmers in the region of a ...

The 5 personalities of cats according to scientists

Of cats it has been said that they have seven lives (or nine in some places of the world) because of their great agility and speed, which allows them to leave unharmed situations that for other animals would be fatal , but recent research states that can be classified into 5 types of personalities .Know the 5 personalities of cats according to scientists. The 5 personalities of cats according to Scientists Dr.Lauren Finka, a researcher at Lincoln University in the United Kingdom, made this statement after interviewing 200 feline owners and their cats .The Daily Mail was made I echo this study and publish its results.Dr.Finka believes that the personality of cats is basically determined by two factors that interact with each other: genetics of the cat and the experiences acquired during its development .We have the 5 personalities he has detected and his recommendations for each of them. 1.Cat Hunter Most cats have hunter instincts , but in those who belong to thi...

7 aspects that will strengthen your character

How could we define the character? We usually say that there are people with a strong character or a weak character, but in reality it is much more than all this.It is an authentic trunk full of personal experiences, of overcome problems, of stored fears, of inherited factors, and it has to do, above all, with our social learning and also with our habits. It is also often said that the character finishes profiling at the end of our adolescence, but we could say that throughout our life we ​​are traveling along a path where we never stop learning, where experiences continue to shape our personality and our character. However, what aspects can help us strengthen it? What acts or experiences should we live to see a "a little stronger "? Let's talk about it today, hoping as always to expand this list with your own opinions. 1.Assume your mistakes In this life nobody has that basic manual with which to avoid mistakes or failures.Moreover, errors help us to impro...

What scientists learned after studying genius children for 45 years

Started in 1971, the "Mathematically Early Youth Study," or SMPY, has tracked 5,000 of the genius children in America .It is one of the longest-lasting studies focused on gifted children that has been in history.We will tell you what they discovered. 5 things researchers discovered when studying genius children for more than four decades 1.These children Geniuses lead exceptional lives. Initially they studied the intelligence of genius children in the United States using the SAT, university entrance exams and other Intellectual Coefficient tests, then they began looking for additional factors such as university enrollment and the professional careers they pursue later in life. What enco They also showed that the most gifted children grew up to obtain doctorates and postgraduate degrees , and to register patents in a much higher proportion with respect to the less gifted children.The majority are among the top 5% of employees. According to Jonathan Wai, a psyc...

The mystery of Pingelap, the island whose inhabitants live in black and white

In one of the four states that make up the Federated State of Micronesia , is the island of Pingelap .It is part of an atoll that has only 1 tide '8 km2. 250 people live on the island and are of great interest to geneticists around the world who want to investigate the mystery of Pingelap, the island whose inhabitants live in black and white . The mystery of Pingelap, the island whose inhabitants live in black and white The 10% of the island's inhabitants suffer from a vision disorder that prevents them from appreciating colors .They suffer from achromatopsia .This particularity means that the person who suffers it can only see the white, the black and the different ranges of gray.For the inhabitants of the island who are mostly engaged in fishing and live in full sun, this is a great inconvenience .The world as if it were the burned image of an old negative.In addition, the fact of not distinguishing colors complicates their lives in many other matters, such...

5 psychological tricks to receive better tips

Generally the tip given to a waiter or waitress in a restaurant should be based on the quality of service, right? Curiously , studies claim that this factor is the least influential. There are many tricks with which you can receive better tips.Do you want to know them? Here we go! 5 psychological tricks to receive better tips A study led by psychologist Bibb Latane showed that the larger the group that goes to the restaurant, the smaller is the tip , since each individual feels that it is not their duty to give it and that another will do it.The same thing happens, according to Latane, when there are many witnesses to the injustice on the street, then there is less chance of Someone do something. Dissemination of responsibility is the name of this curious effect, and also of the fact that if a group shares they share the account, their tips are generally smaller.much of the type of restaurant in which one works, since some do add the proportional part to the account. To c...

6 facts about Einstein that you probably don't know

Many agree that Albert Einstein was one of the greatest scientists in history, but as with many famous people, some facts about Einstein have been distorted or forgotten over time , do you want to know more about this genius? Here we go! 6 facts about Einstein that you surely do not know 1.Its authorship on the theory of relativity was debated The theory of relativity was full of accusations of plagiarism by German scientist David Hilbert and his supporters, because Hilbert claimed that it was he who had first discovered the theory and that Einstein had taken all the credit .In his defense, Einstein I affirm that it was Hilbert who had copied some of his documents. At the beginning it was thought that every scientist had discovered the theory by his side, but that was until it was discovered that, in fact, Hilbert had stolen some documents of Einstein without giving him any credit. Einstein published his discovery before Hilbert, who originally submitted some documents...

Could you escape a T. Rex?

In Science Daily Online we have asked ourselves, through a TEST, whether we would survive a shark attack.It is well known that these creatures are very ancient, so much that they lived with already extinct beings, but worthy of a nightmare: dinosaurs.Of all of them there is one that, if you saw the movie Jurassic Park , stands as the most fearsome , of titanic proportions and with the most chilling jaws you can conceive.If, friend, we speak of the Tyranossaurus Rex, the king of the Cretaceous. T.Rex a murderer you could run from? If you have had the opportunity to see any of the films-sequels, paracuelas, spin offs...-of J urassic Park , surely you have asked yourself: How have they done to give that beast a corner, that hungry T.Rex? What speed should it reach? Would I have devoured myself if I was the one who goes out of his way to avoid his teeth? Clip of the movie« Jurassic Park »(1993, Steven Spielberg) First of all we have to highlight that, in fact, any answer ...

Is it a zebra or is it a donkey? No, it's a "ceburro"

No, it is not a pun.The birth of this beautiful zeburro is the result of a hybrid cross between a zebra and a donkey. As often happens with zebras and donkeys , creating unique and sympathetic zebrasans that raise so much expectation among animal lovers. This curious phenomenon has recently originated in a small Crimean zoo, where apparently some species coexist quietly with the others, until in the end nature has played with chance to create a new tenant whom they have called «Telegraph» .If the purpose of zoos is precisely to conserve all species at risk of extinction, it seems that biology has taken a step further to offer us this little gift: the ceburro. Ceburro.The sympathetic hybrid of the zoo The ceburro born in Crimea has received the original name of «Telegraph» in honor of a newspaper of l country .As you can see in the picture his whole body is reminiscent of that of a donkey, but its legs are painted with the typical strokes of a zebra.A precious nature that, unfo...

What things would disappear if the bees cease to exist?

Bees can be as cute as they are dangerous.If a swarm of African bees starts to chase you, you better run if you want to leave unharmed.These small insects bring a lot to our world-besides the delicious honey, of course-, It would really surprise you to know how important they are.For this reason, in Science Daily Online we tell you that things could disappear if the bees cease to exist. This would happen if the bees cease to exist 1-Everyone's food Bees are insects that are responsible for the pollination of most of the food we eat.We would be talking about 90% of the world's food supply, if we think of the 100 crops that constitute such a supply.Just thinking that is responsible for pollinating the corn is enough. And even if the bats are allies of the bees, if they cease to exist there would not be enough food to satisfy the hunger of six billion people.Imagine to what extent they are important ! 2-The clothes would run out This point is not about fashion...