vs ホオジロオナガガモ

Chrysococcus radians compared with Anas bahamensis

Key Differences

is Not Evaluated while ホオジロオナガガモ is Least Concern.

Taxonomic Classification

Rank		ホオジロオナガガモ
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	Chromulinales (Chromulinales)	Anseriformes (カモ目)
Family	Dinobryaceae	Anatidae
Genus	Chrysococcus	Anas
Species	Chrysococcus radians	Anas bahamensis

Conservation Status

NE — Not Evaluated

ホオジロオナガガモ

LC — Least Concern

Physical Characteristics

Attribute		ホオジロオナガガモ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Native to Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Denmark, and Sweden.

ホオジロオナガガモ

Habitat

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

Range

Widely distributed across Asia (Israel), Europe (9 countries), and South America (Colombia, Ecuador, Venezuela).

Chrysococcus radians is a freshwater chrysophyte microalga in the genus Chrysococcus, class Chrysophyceae, order Chromulinales. The species epithet radians — radiating — describes a lorica with radiating spine-like projections or extensions emanating from the central body of the outer case, a morphological feature readily distinguishable under light microscopy. Radiating processes on chrysophyte loricas are thought to increase the effective surface area of the cell, potentially slowing sinking and maintaining the organism in the illuminated photic zone of freshwater lakes. C. radians has been documented from Norwegian and Swedish freshwater systems, with additional records from Denmark, consistent with a broader northern European distribution of this species. Scandinavian lakes, particularly the oligotrophic highland lakes of Norway and Sweden, harbor diverse chrysophyte communities in which Chrysococcus and related genera are frequently dominant components during spring and autumn mixing periods. The species inhabits the limnetic zone, where it engages in photosynthesis using the characteristic golden-brown chrysophyte pigments — chlorophylls a and c combined with fucoxanthin. Like other genus members, C. radians may also practice mixotrophic feeding on bacteria and dissolved organic matter, providing nutritional flexibility in oligotrophic environments. Siliceous stomatocysts produced by chrysophytes can survive in lake sediments and provide paleolimnological records of past environmental change. C. radians has not been evaluated under IUCN Red List criteria and is classified as Not Evaluated.