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The Secret of Aphids? | Bugs That Poop Candy! |


 


      Meet the aphid a tiny green insect so small it could nap on a grain of rice just like its other family members cigas stink bugs and bed bugs who suck fluids out of their prey apids are their own version of Dracula the only difference is that they prefer praying on plants for something hidden deep inside them the sap yes within the plants deepest core lie the seeve tubes forming long pipelines this is where the sap made of water and sugar is stored and flows under high pressure pressure delivering nutrients to the plants Roots fruits and flowers so no wonder it is highly sought after by various species including humans but plants don't like sharing this sweet drink so they have developed a multi-layer defense system to protect their precious sap from Invaders the first line of defense is the epidermis the plant's tough outer layer that acts as a shield making it difficult for pests to access the inner tissues even if some animal manages to break this barrier and puncture the seed tube the plant releases proteins and sugars that block the tube essentially clogging it to stop the flow of sap keeping this sugary goodness Out Of Reach and if some Brave insects manage to overcome the plant's defenses and drink its sap the high sugar concentration in the sap causes water from the insect's stomach cells to be drawn into its digestive system to balance the sugar concentration through a process called called osmosis as the insect continues to consume the sap it loses more and more water eventually dehydrating without a way to refill the Lost water the insect shivel up and dies but what's a death trap for others is a cakewalk for the mighty apid yes with the help of their stylet and needle like mouth part eits can carefully Pierce through the plant's tough stem and tread their way between cells without causing significant damage once they reach the sea tube the apids puncture it the pressure inside the sea tube is so high that the sap is naturally pushed up through the stylet and into the aphids digestive system allowing the insect to feed without needing to suck I know what you're thinking why doesn't the sap dehydrate aphids like it does other insects well that's because aphids have an enzyme in their stomach called sucra which breaks down the sugar in sap into smaller pieces this redu reduces the Sugar's ability to pull water out of the aphid cells thanks to this clever trick aphids can Feast on the plant's resources for hours even days without a care in the world and when an insect consumes too much it means it poops a lot so much in fact that an apid can excrete its own body weight in poop every 2 hours in large numbers some aphid populations can produce hundreds of kilog of poop per acre but here's the surprising part aphid poop isn't stinky gooey mess instead it's a clear sweet syrupy substance called honeydew packed with sugar just like candy ants love it bees use it and and ancient Americans collected this dried honeydew to make sweet treats so apids may be sap thieves but their sugary poop gives them a sweet reputation in nature trivia time did you know in the summer an aphan gives birth to a genetically identical clone of herself yes and that baby clone is already pregnant with another clone when she's born sketching time today's sketch of the day goes to manoline esera.



Thank you....


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