ערב טוב לכולם, הידעתם???

dani 123

New member
ערב טוב לכולם, הידעתם???

Today's useless fact - Why do only female mosquitoes eat human blood? What do male mosquitoes eat? No, the mosquito menfolk aren't out eating steak and potatoes. Actually, the main food of both male and female mosquitoes is nectar from flowers. The nectar is converted to glycogen, a fuel potent enough to provide their muscles with energy to fly within minutes of consuming the nectar. Mosquitoes also possess an organ, known as the fat-body, that is capable of storing sugar for conversion to flight fuel. Male mosquitoes can exist quite happily on a diet of only nectar, and nature makes certain that they are content—males don't have a biting mouth part capable of piercing the skin of a human. But females have been anatomically equipped to bite because they have an important job to do: lay eggs. In some species, female mosquitoes are not capable of laying any eggs unless they eat a nutritional supplement of some tasty, fresh blood. Their organs convert the lipids in blood into iron and protein that can greatly increase their fecundity. A mosquito that would lay five or ten eggs without the supplement can lay as many as 200 with a dash of Type O. Although we don't miss the blood sucked out of us, this is quite a feast for the mosquito; many times, she consumes more than her own body weight in blood. But let's not take it personally. Some studies have indicated that given a choice, mosquitoes prefer the blood of cows to humans, and in the jungle are just as likely to try to bite a monkey or a bird as a human.
 

shaiv

New member
שבת שלום לכולם../images/Emo91.gif../images/Emo20.gif../images/Emo39.gif

שבת שלום לכולם
מצורף סיפור נחמד עם מוסר השכל
 

dani 123

New member
בוקר טוב לכולם

נראה כי הגשם מאחורינו, לפחות להיום
 

yaely2

New member
מנהל
שבת שלום דני, זה שייך לייתושות../images/Emo6.gif

 
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