euphausia pacifica
Học thuậtThân thiện
A jellyfish drifts through the ocean, feeding on a swarm of Euphausia pacifica.
Definition
- Noun:
- A species of krill: Euphausia pacifica is the scientific name for a specific, small, shrimp-like crustacean found in the Pacific Ocean. It is a key organism in marine food webs.
- Primary food source: This krill species is a fundamental food source for many larger marine animals, including certain whales, fish, and notably, jellyfish.
Usage Examples
- Noun:
- The dense swarm of Euphausia pacifica attracted a large group of feeding whales.
- Scientists study the population cycles of Euphausia pacifica to understand the health of the ecosystem.
- This jellyfish species relies almost exclusively on Euphausia pacifica for its diet.
Advanced Usage
- In ecological and scientific contexts: The term is primarily used in marine biology, oceanography, and ecological research to refer precisely to this species, distinguishing it from other types of krill (e.g., , the Antarctic krill).
- The research paper focused on the diurnal vertical migration patterns of Euphausia pacifica.
Variants and Related Words
- Krill (n): The common name for small, pelagic crustaceans of the order Euphausiacea, which includes .
- Zooplankton (n): The collective category of small, often microscopic, animal organisms drifting in water, of which krill are a part.
- Euphausiid (n/adj): A member of the family Euphausiidae; relating to krill.
Synonyms
- Pacific krill: A common descriptive name.
- Planktonic crustacean: A broader categorical synonym.
Related Phrases / Compound Terms
- Euphausia pacifica biomass: Refers to the total mass or amount of this krill species in a given area, a critical measurement in marine science.
- Euphausia pacifica swarm: Describes a large, aggregated group of these organisms, which is their typical social formation.
Notes on Meaning
- The reference context "food for jellyfish" highlights one of its specific ecological roles. However, its definition is not limited to this single function. It is a species defined by its biological classification (Genus: , Species: ) with its own distinct characteristics, life cycle, and broader importance in the marine food web.
A jellyfish drifts through the ocean, feeding on a swarm of Euphausia pacifica.
Noun
- food for jellyfish