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American Focus > Blog > Tech and Science > Solar-Powered Slug Steals Chloroplasts and Stores Them for Emergency Food
Tech and Science

Solar-Powered Slug Steals Chloroplasts and Stores Them for Emergency Food

Last updated: June 27, 2025 1:15 pm
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Solar-Powered Slug Steals Chloroplasts and Stores Them for Emergency Food
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Sea slugs are fascinating creatures that have the ability to steal chloroplasts from algae and use them to turn sunlight into nutrients. This unique behavior has been studied extensively, with researchers shedding light on how these solar-powered slugs manage to keep their stolen chloroplasts alive and functioning.

In a recent study published in Cell, scientists discovered that certain species of sea slugs have specialized compartments in their cells where they store chloroplasts looted from algae. These compartments, called kleptosomes, provide the perfect environment for the chloroplasts to thrive. Researchers found that when the slugs are in need of food, they can raid these compartments to consume the chloroplasts, allowing them to survive during lean times.

The study, led by biologist Nicholas Bellono from Harvard University, revealed that the slugs produce most of the proteins in the chloroplasts themselves, rather than relying on the original algae for support. This finding was a breakthrough in understanding how these sea slugs maintain their stolen chloroplasts.

Further investigation into the kleptosomes showed that they contain ion channels, including one called P2X4, which plays a key role in keeping the chloroplasts functioning. Blocking this channel in the slugs’ kleptosomes resulted in a decrease in oxygen production from photosynthesis, highlighting the importance of these compartments in supporting the stolen chloroplasts.

Comparing solar-powered slug Elysia crispata with non-photosynthetic slug Aplysia californica, researchers found that the former could survive for up to four months without food, thanks to its kleptosomes. In contrast, the latter died after just a few weeks without food. Additionally, after four weeks without food, the Elysia slugs lost their green color, turned orange, and stopped photosynthesizing, indicating a shift in their energy production.

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The discovery of kleptosomes in sea slugs opens up new avenues for research into organelle evolution and other cellular processes. Cell biologist Elena Oancea from Brown University praised the study, highlighting the challenges of studying molecular and cellular processes in small organisms like sea slugs.

Overall, the study on solar-powered sea slugs sheds light on the fascinating adaptations these creatures have developed to survive in their environment. By stealing chloroplasts and storing them in specialized compartments, these slugs have found a unique way to harness the power of sunlight for their own benefit.

TAGGED:ChloroplastsemergencyFoodSlugSolarPoweredstealsstores
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