Catkin Yew vs Common seabird tick

Amentotaxus argotaenia compared with Ixodes uriae

Key Differences

• Catkin Yew is Near Threatened while Common seabird tick is Not Evaluated.

Taxonomic Classification

Rank	Catkin Yew	Common seabird tick
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Coniferophyta (Conifers)	Arthropoda (Arthropods)
Class	Pinopsida (Conifers)	Arachnida (Arachnids)
Order	Pinales (Pines & Allies)	Ixodida (Ixodida)
Family	Taxaceae	Ixodidae
Genus	Amentotaxus	Ixodes
Species	Amentotaxus argotaenia	Ixodes uriae

Conservation Status

Catkin Yew

NT — Near Threatened

Common seabird tick

NE — Not Evaluated

Physical Characteristics

Attribute	Catkin Yew	Common seabird tick
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Catkin Yew

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Common seabird tick

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Norway and Sweden.

Catkin Yew

The Catkin Yew (Amentotaxus argotaenia) is a species in the genus Amentotaxus. It is currently classified as Near Threatened on the IUCN Red List. Typically found in temperate and boreal forests, often at higher elevations.

Common seabird tick

<em>Ixodes uriae</em>, the common seabird tick, is a hard tick in the family Ixodidae, order Ixodida, distributed across subarctic and subantarctic regions with records from Norway and Sweden. This species is an obligate ectoparasite that specializes in feeding on colonial seabirds, including auks, penguins, and petrels, making it one of the few tick species with a genuinely circumpolar distribution tied to its avian hosts. <em>Ixodes uriae</em> typically infests birds in their nesting colonies, where dense aggregations and repeated site fidelity by hosts facilitate transmission. Beyond its direct parasitic impact, this tick serves as a vector for various pathogens, including Borrelia spirochetes and tick-borne encephalitis-related viruses, making it of scientific interest for disease ecology in seabird populations. The species has not been formally evaluated by the IUCN, and its conservation status remains Not Evaluated. Biological traits for this species remain poorly documented in the scientific literature, including comprehensive data on average lifespan under natural conditions, body dimensions across life stages, weight, and the full range of its host and pathogen associations.