Brief Summary

Read full entry


Caridea is an infraorder of shrimp in the class Malacostraca. These shrimps are most recognized for their important role in subsistence fisheries. They can be found in almost all aquatic habitats all over Earth—in both fresh and saltwater with the exception of freshwater in the Antarctic (Grave et al. 2007). With habitats that range from mountain streams to the deep ocean, it is amazing to see how one infraorder gives rise to such a diverse array of species with different adaptations. Although they are mainly known to inhabit freshwater areas, one of the most interesting of all aquatic habitats, hydrothermal vents, is not excluded.

Despite being in less than ideal parts of the ocean, hydrothermal vents are the homes to a wide diversity of organisms and species. These animals have developed special adaptations that have allowed them to thrive in the harsh conditions present at these vents (extreme temperatures, low light, low oxygen, etc.).

Shrimps found in the family Alvinicarididae make up a large part of the organisms present in these habitats (specifically along the Mid-Atlantic Ridge). At these vents, they aggregate around the chimney walls and one species in particular, Rimicaris exoculata, has been found to be the host of a diversity of epibiotic bacteria that can be found inside of its gills and mouthparts. From sampling and sequencing efforts, it has been revealed that methanotrophic bacteria do indeed colonize these gills (Guri et al. 2011). When sequencing these episymbionts, Guri et al. also found that the episymbiont, genetically, was the same throughout the shrimp’s life—possibly suggesting the shrimp had some way of selecting for these symbionts (Guri et al. 2011).

This unique adaptation shows that there is much more complexity to this species and this infraorder as a whole. Understanding all the life histories found in Caridea can help us gain a better understanding of how these animals have come to be so successful and able ot inhabit aquatic habitats all over the world.


Creative Commons Attribution 3.0 (CC BY 3.0)

© mtluong

Supplier: mtluong

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!