Aquaculture Glossary

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The community of microorganisms, including algae, fungi and bacteria, that live in a particular habitat.



Polymerase chain reaction, a highly sensitive molecular biology technology that allows isolation of DNA fragments by selective amplification of a specific region of DNA.

polychaete worms

A class of generally marine worms whose many segments bear bristly extensions used for movement.


A latter stage of the early shrimp life cycle in which the animals resemble very small adults.


Substances that induce the growth or activity of microorganisms and positively alter their composition in the shrimp gut.


Microorganisms added to shrimp feed or culture systems that are believed to provide beneficial health benefits when consumed.


quorum sensing

In bacteria, the ability to coordinate gene expression according to the density of their local population.


sodium hypochlorite

Bleach, a chemical compound commonly used for disinfection.

specific pathogen-free

Shrimp tested and documented as free of the specified pathogens.



A genus of bacteria, some species of which can cause foodborne infection associated with seafood.

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