5 facts about sperm

accreditation
When it comes to making babies, sperm is a very important factor. There are some really strange and wonderful developments and facts about sperm that you may not know.

1. Why small males have big sperm


The moment the female squid lays her eggs, smaller 'sneaker' males place packages of sperm near her mouth in the hope that their sperm may have a chance of fertilizing the eggs. Researchers found that this sperm is larger than that of the bigger males who mate directly with the female. "Sperm size is likely to be an adaptation to fertilization environment," said Dr Yoko from the University of Tokyo.

Find out more here


2. Giant sperm for little flies

Drosophila bifurca is a species of fruit fly. This little insect may seem insignificant but his sperm can be up to 5.8cm long when uncoiled! The humble fruit fly holds the title of having the longest sperm cells of any organism on Earth.

Want know more? Read here

3. Mouse sperm could help infertile couples


Researchers in Japan used embryonic stem cells to grow healthy mouse sperm, a development which could help treat human infertility. The research with mouse sperm could lead to developments where human sperm is grown and used to fertilise a human embryo.

Read the rest of the research here

4. What's in sperm?


Did you know that in the average volume of semen produced in a single ejaculation (which varies from 2 to 5 ml) contains citric acid, free amino acids, fructose, enzymes, phosphorylcholine, prostaglandin, potassium, and zinc!

Want to know more?


5. Sperm that glows

Watch this amazing video of modified fly semen travelling through a female fly's reproductive system. This could help scientists work out how to treat infertility in humans in the future.

Watch the video here

Did you know these crazy facts about sperm?
We live in a world where facts and fiction get blurred
In times of uncertainty you need journalism you can trust. For 14 free days, you can have access to a world of in-depth analyses, investigative journalism, top opinions and a range of features. Journalism strengthens democracy. Invest in the future today. Thereafter you will be billed R75 per month. You can cancel anytime and if you cancel within 14 days you won't be billed. 
Subscribe to News24
Voting Booth
What are your thoughts on the possibility of having permanent Stage 2 or 3 load shedding?
Please select an option Oops! Something went wrong, please try again later.
Results
I'll take that over constant schedule changes
13% - 1048 votes
Why are we normalising Eskom’s mess?
72% - 5802 votes
I've already found alternative ways of powering my home/business
15% - 1223 votes
Vote
Rand - Dollar
17.40
-0.0%
Rand - Pound
21.43
+0.1%
Rand - Euro
18.91
+0.0%
Rand - Aus dollar
12.30
-0.2%
Rand - Yen
0.13
+0.1%
Platinum
1,012.38
+1.1%
Palladium
1,646.13
+0.6%
Gold
1,926.01
-0.1%
Silver
23.67
-0.2%
Brent Crude
85.46
+1.1%
Top 40
73,431
0.0%
All Share
79,477
0.0%
Resource 10
75,833
0.0%
Industrial 25
102,289
0.0%
Financial 15
16,145
0.0%
All JSE data delayed by at least 15 minutes Iress logo
Editorial feedback and complaints

Contact the public editor with feedback for our journalists, complaints, queries or suggestions about articles on News24.

LEARN MORE