vs キバシオナガガモ

Chrysosphaerella annulata compared with Anas georgica

Key Differences

• is Not Evaluated while キバシオナガガモ is Endangered.

Taxonomic Classification

Rank		キバシオナガガモ
Kingdom	Chromista (クロミスタ)	Animalia (動物)
Phylum	Ochrophyta (オクロ植物)	Chordata (脊索動物)
Class	Chrysophyceae (黄金色藻)	Aves (鳥類)
Order	Ochromonadales (Ochromonadales)	Anseriformes (カモ目)
Family	Paraphysomonadaceae	Anatidae
Genus	Chrysosphaerella	Anas
Species	Chrysosphaerella annulata	Anas georgica

Conservation Status

NE — Not Evaluated

キバシオナガガモ

EN — Endangered

Physical Characteristics

Attribute		キバシオナガガモ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

キバシオナガガモ

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (6 countries) and South America (Colombia, Ecuador). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Chrysosphaerella annulata is a colonial freshwater chrysophyte microalga in the genus Chrysosphaerella, class Chrysophyceae. Unlike unicellular loricate chrysophytes, Chrysosphaerella species form spherical or ellipsoidal free-floating colonies in which individual cells are embedded in a common gelatinous matrix. The individual cells bear long siliceous scales with distinctive ring-like or annular structures — referenced by the species epithet annulata — projecting outward from the colony surface, giving the colony a spiny appearance under microscopy. These siliceous scales are species-specific and their morphology, as revealed through electron microscopy, is the primary character for identifying Chrysosphaerella species. C. annulata has been recorded from Norwegian and Swedish freshwater environments, consistent with the Scandinavian emphasis in chrysophyte research and the high diversity of chrysophytes in boreal freshwater systems. Chrysosphaerella colonies are planktonic, inhabiting the limnetic zone of oligotrophic to mesotrophic lakes where they may form locally conspicuous populations during favorable conditions. The species uses chlorophylls a and c with fucoxanthin for photosynthesis, contributing to primary production. Chrysosphaerella scales can accumulate in lake sediments, providing a record of past community composition and environmental conditions. C. annulata has not been assessed under IUCN criteria and is classified as Not Evaluated. Its documentation contributes to understanding the diversity of colonial chrysophyte forms in northern European freshwater ecosystems.

キバシオナガガモ

キバシオナガガモ（Anas georgica）はIUCNレッドリストで絶滅危惧（EN）に分類されています。野生での絶滅の高いリスクにさらされており、個体数が大幅に減少し生存への継続的な脅威があります。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway