vs Polar bear

Listeria monocytogenes compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Bacteria (Bacteria)	Animalia (动物界)
Phylum	Firmicutes (厚壁菌門)	Chordata (脊索动物门)
Class	Bacilli (芽孢桿菌綱)	Mammalia (哺乳動物)
Order	Lactobacillales (乳杆菌目)	Carnivora (食肉目)
Family	Listeriaceae	Ursidae (Bears)
Genus	Listeria	Ursus (Bears)
Species	Listeria monocytogenes	Ursus maritimus

Conservation Status

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States.

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

单核细胞增生李斯特菌是革兰阳性运动菌，是李斯特菌病的病原体，对孕妇、新生儿、老年人和免疫功能低下者尤其危险。它是一种兼性胞内寄生菌，存在于土壤、水和多种食品中，能在冷藏温度下生长。与受污染的即食食品（如熟食肉类、软奶酪和生蔬菜）相关的暴发事件频繁发生。

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。