Mysidacea
Definition
Noun 1. A taxonomic order of small, shrimp-like crustaceans: Mysidacea refers to an order within the class Malacostraca. These are small, mostly marine crustaceans, commonly known as opossum shrimps or mysid shrimps. They are characterized by a carapace that covers the head and thorax, stalked eyes, and a brood pouch (marsupium) in females for carrying eggs and young.
Usage Examples
- The Mysidacea are an important part of the marine zooplankton, serving as food for many fish.
- Under the microscope, we observed several species belonging to the order Mysidacea.
- The presence of a marsupium is a key identifying feature of Mysidacea.
Advanced Usage
- The taxonomic order Mysidacea is sometimes considered a suborder (Mysida) within the larger order Peracarida in modern classification systems.
- In ecological studies, the biomass of Mysidacea is often measured to assess the health of aquatic food webs.
Variants and Related Words
- Mysid (noun): A common name for any member of the order Mysidacea; an opossum shrimp.
- The sample contained numerous mysids.
- Mysidopsis (noun): A genus within the Mysidacea.
- Neomysis (noun): Another common genus within the Mysidacea.
Synonyms
- Opossum shrimp (common name)
- Mysid shrimp (common name)
Related Terms (Not direct synonyms)
- Crustacean: The larger class of arthropods to which Mysidacea belong.
- Zooplankton: The ecological community of floating animals, which includes many mysids.
- Peracarida: The larger taxonomic superorder that may encompass mysids.
Noun
-
opossum shrimp
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