Connect with us

Life & Living

Scientists Reveal Secrets Of Sex-Changing Fish That Transforms From Female To Male In Just 10 Days

Published

on

Bluehead wrasse

An international collaboration led by New Zealand scientists have revealed, for the first time, the secrets of 500 species of fish that change sex, which remained a mystery for decades.

“We may take it for granted that the sex of an animal is established at birth and doesn’t change.

“However, about 500 species of fish change sex in adulthood, often in response to environmental cues,’’ Geneticist Jenny Graves, one of the co-lead author of the research published in Science Advances said on Thursday.

“How sex can reverse so spectacularly has been a mystery for decades.

“The genes haven’t changed, so it must be the signals that turn them off and on,’’ said Graves who has followed the bluehead wrasse for years.

Loading...

Bluehead wrasses live in groups, on coral reefs of the Caribbean.

A dominant male, with a blue head, protects a harem of yellow females.

He said if the male is removed, the biggest female becomes male, in just 10 days.

She changes her behaviour in minutes, her colour in hours.

Her ovary becomes a testis and by 10 days it is making sperm, according to the findings.

Using the latest genetic approaches, high-throughput RNA-sequencing and epigenetic analyses, the researchers discovered when and how specific genes are turned off and on in the brain and gonad so that sex change can occur.

The study is important for understanding how genes get turned off and on during development in all animals, including humans, and how the environment can influence this process, researchers said.

“We found that sex change involves a complete genetic rewiring of the gonad,’’ said Erica Todd from the University of Otago, the co-lead author.

(Xinhua/NAN)

Advertisement
Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Life & Living

New Research: Frequent S£x May Help Delay Menopause

Published

on

Scientists have said that frequent s£x can help delay menopause beyond the average age since it keeps the body and the hormones active.

Menopause is usually diagnosed after twelve months without menstruation and usually occurs between the ages of 45 and 47, with the average age being 51.

The study conducted by the University College London and published by Royal Society Open Medicine suggests that if you have a full s£xual life, you will end up keeping your body and hormones active, which as a result will keep you fertile.

They further said that if a woman is not having s£x, the body will therefore ‘choose’ to stop secreting energy into ovulation and invest the resources into existing skin therefore resulting in menopause.

“During ovulation, the woman’s immune function is impaired, making the body more susceptible to disease. Hence, if a pregnancy is unlikely owing to a lack of s£xual activity, then it would not be beneficial to allocate energy to a costly process, especially if there is the option to invest resources into existing kin,” according to the researchers.

Loading...

Scientists who conducted the study said they recruited 2,936 women aged 42-52, with the researchers tracking their s£xual activities for ten years, as well as their menopause status.

The researchers gathered that women of any age who had s£x each week had 28% less chances of experiencing menopause at the age of 52, while those who had s£x less than once a month have higher chances of experiencing menopause at the average age of 51.

However, when the British National Health Service (NHS) reviewed the research, it said the study does not prove having more s£x directly delay menopause.

“The study only shows a link between how often women had s£x and their age at menopause. It cannot prove that having more s£x directly causes a later menopause.”

Meanwhile, Vicky Rhodes, 59 said she still have periods and has never experienced a hot flush, nor a symptom of hormonal change, as she links it to her frequent s£x with lover jack, 49.

She told Daily Mail that the research has helped her to understand why she still see her menstrual flow despite her age.

According to her: “At last, I think I know what’s been going on, because the years when I might have expected to go through the menopause were taken up with a passionate affair.”

Continue Reading

Life & Living

“I Bled Again, Is It Possible To Regain Lost Virginity” — Nigerian Lady Asks

Published

on

A confused 26-year-old Nigerian lady has asked the possibility of a woman losing her virginity twice.

The lady who wrote to relationship expert, Joro Olumofin and begged to be kept anonymous revealed that she lost her virginity when she was 23 years old.

However, she had s£x for the second time a few days ago now that she is 26 and she noticed that she bled again.

In a confused state, she’s seeking to know why she bled for the second time after having initially lost her virginity some three years ago.

She wrote:

Loading...

“Dearest Joro, God bless you for all you do. I lost my virginity to someone who doesn’t deserve it at 23…i regret doing it.. as I didn’t enjoy the sex. It was so painful I nearly passed out. Since then I developed phobia for sex.. 3 years later… I am 26 now… Three days ago I had sex again. It wasn’t planned… I didn’t really know how it happened… The issue is I bled again… like it’s my first time. It was so so painful yet again. Truth is, I didn’t see myself ever having sex again. It’s not worth all the hype.

My major concern is days… Why did I bleed again. Does it mean I regain my lost virginity only to lose it once more. Please keep me anonymous.”

Continue Reading

Life & Living

‘I’ve Sinned Before God…My Side Chick Came To My Rescue When My Wife Refused To Help Me’ — Man Shares Touching Story

Published

on

A man has shared a story of how his once loving and caring wife turned to a monster when he became broke after losing his job in 2018.

The man who wrote anonymously to relationship expert, Joro Olumofin disclosed that he pleaded with his wife to support a business idea he had, but the wife dismissed and turned his proposal down.

According to the man, his wife started maltreating him, continuously insulted him in the presence of their children and his friends, to the extent their five year old daughter onced asked him “why does mommy hate you so much?.”

His wife’s actions, according to him, pushed him to start drinking until one fateful day….

Read his story below:

Loading...

 

 

Continue Reading
Advertisement