Large-Neck Clam vs Lesser Capybara

Mya arenaria compared with Hydrochoerus isthmius

Key Differences

• Large-Neck Clam is Vulnerable while Lesser Capybara is Data Deficient.

Taxonomic Classification

Rank	Large-Neck Clam	Lesser Capybara
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Bivalvia (二枚貝)	Mammalia (哺乳類)
Order	Myida (Myida)	Rodentia (ネズミ目)
Family	Myidae	Caviidae
Genus	Mya	Hydrochoerus
Species	Mya arenaria	Hydrochoerus isthmius

Evolutionary Relationship

Large-Neck Clam and Lesser Capybara share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Large-Neck Clam

VU — Vulnerable

Lesser Capybara

DD — Data Deficient

Physical Characteristics

Attribute	Large-Neck Clam	Lesser Capybara
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Large-Neck Clam

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Georgia, Turkey), Europe (22 countries), and North America (Canada, United States). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Lesser Capybara

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Large-Neck Clam

ミゾハマグリ（Mya arenaria）はIUCNレッドリストで危急（VU）に分類されている。野生での絶滅リスクが高く、個体数が減少し、生息地への圧力が増加している。