ハクトウワシ vs

Haliaeetus leucocephalus compared with Chrysochromulina pseudolanceolata

Taxonomic Classification

Rank	ハクトウワシ
Kingdom	Animalia (動物)	Chromista (クロミスタ)
Phylum	Chordata (脊索動物)	Haptophyta (ハプト藻)
Class	Aves (鳥類)	Prymnesiophyceae (Prymnesiophyceae)
Order	Accipitriformes (タカ目)	Prymnesiales (Prymnesiales)
Family	Accipitridae (Hawks & Eagles)	Chrysochromulinaceae
Genus	Haliaeetus (Sea Eagles)	Chrysochromulina
Species	Haliaeetus leucocephalus	Chrysochromulina pseudolanceolata

Conservation Status

ハクトウワシ

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

NE — Not Evaluated

Physical Characteristics

Attribute	ハクトウワシ
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

ハクトウワシ

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 10 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (8 countries), North America (United States), and South America (Ecuador).

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

ハクトウワシ

アメリカの国鳥であり保全の成功を象徴するハクトウワシは翼開長が最大2.4 mに達し、北米全域の水辺近くの森林や湿地に生息する。強力な空中捕食者兼腐肉食者で魚を主食とするが、水鳥や腐肉も捕食する。DDT汚染と狩猟によって1960年代にほぼ絶滅に瀕したが、農薬の使用禁止と絶滅危惧種法の施行により劇的に回復した。

Chrysochromulina pseudolanceolata is a marine haptophyte microalga in the genus Chrysochromulina, class Prymnesiophyceae, order Prymnesiales. The prefix pseudo — meaning false or resembling — combined with lanceolata indicates that this species closely resembles C. lanceolata in overall appearance or scale form but is distinguished by subtle ultrastructural differences that justify its treatment as a separate species. Such pseudo-named species are common in groups where morphological convergence is high, and they emphasize the need for careful electron microscopy to avoid misidentification. C. pseudolanceolata has been recorded from Norwegian and Swedish coastal marine waters and also from Brazilian waters, suggesting a broad Atlantic distribution shared with its namesake C. lanceolata. This Atlantic-spanning distribution may reflect genuine cosmopolitan dispersal of marine nanoplankton facilitated by ocean current systems, or alternatively may result from independent description of morphologically similar but genetically distinct lineages from different ocean regions. The species inhabits coastal photic zones and contributes to primary production as a photoautotrophic or mixotrophic nanoplankton organism. Its golden-brown pigmentation derives from the characteristic prymnesiophyte combination of chlorophylls a and c with fucoxanthin. C. pseudolanceolata has not been assessed under IUCN criteria and is classified as Not Evaluated. Molecular phylogenetic studies comparing Norwegian and Brazilian populations would help clarify whether geographically separated populations represent a single coherent species.