necturus
Definition
Noun 1. A genus of aquatic salamanders: Necturus is the scientific genus name for a group of permanently aquatic salamanders commonly known as mudpuppies or waterdogs. These amphibians are characterized by retaining external gills throughout their entire life (a condition called neoteny), having four limbs, and living in rivers and lakes.
Usage Notes
- The word is a proper noun and is always capitalized. It is used primarily in scientific, zoological, and biological contexts.
- It functions as a singular noun when referring to the genus as a whole. The standard plural form for multiple members of this genus is .
Examples
- Scientific Classification: " is a genus within the family Proteidae."
- Field Observation: "The biologist identified the specimen as a member of the genus ."
- Comparative Anatomy: "The larval features, such as external gills, are retained in the adult ."
Advanced Usage
- In Taxonomic Hierarchy: The name is used to classify species. For example, the common mudpuppy's full scientific name is .
- As a Representative Organism: In biological studies, is often cited as a classic example of an organism that exhibits neoteny.
Variants and Related Words
- Mudpuppy (n.): The common name for the most widespread species, .
- Waterdog (n.): A common name for various species, especially smaller or larval forms.
- Proteidae (n.): The biological family to which the genus belongs.
Synonyms
- Mudpuppy (common name)
- Waterdog (common name)
Different Meanings
- There are no significant different meanings for . It refers exclusively to this specific genus of salamanders. It is not used in general English outside of scientific contexts.
Noun
-
a genus of Proteidae
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