Common dung beetle vs Polar bear
Aphodius pedellus compared with Ursus maritimus
Key Differences
- Common dung beetle is Least Concern while Polar bear is Vulnerable.
Taxonomic Classification
| Rank | Common dung beetle | Polar bear |
|---|---|---|
| Kingdom same | Animalia (动物界) | Animalia (动物界) |
| Phylum | Arthropoda (节肢动物门) | Chordata (脊索动物门) |
| Class | Insecta (昆蟲綱) | Mammalia (哺乳動物) |
| Order | Coleoptera (鞘翅目) | Carnivora (食肉目) |
| Family | Scarabaeidae | Ursidae (Bears) |
| Genus | Aphodius | Ursus (Bears) |
| Species | Aphodius pedellus | Ursus maritimus |
Evolutionary Relationship
Common dung beetle and Polar bear share a common ancestor at the Kingdom level: Animalia. (动物界)
Conservation Status
Common dung beetle
LC — Least ConcernPolar bear
VU — VulnerablePopulation: ~26.0K
Trend: Decreasing ↓
Physical Characteristics
| Attribute | Common dung beetle | Polar bear |
|---|---|---|
| Diet | — | Carnivore |
| Average Lifespan | — | 25 years |
| Average Length | — | 2.4 m |
| Average Weight | — | 450.0 kg |
Habitat & Geographic Range
Common dung beetle
Typically found in virtually all terrestrial and freshwater habitats.
Distributed across Denmark, Norway, Sweden, Switzerland, and United States.
Polar bear
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.
Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.
Common dung beetle
<em>Aphodius pedellus</em>, a species of dung beetle in the family Scarabaeidae, is classified as Least Concern by the IUCN Red List, indicating a stable conservation outlook across its known range. The species has been documented in Denmark, Norway, Sweden, Switzerland, and the United States, with its distribution spanning virtually all terrestrial and freshwater biome types. As a member of the Aphodiini tribe, <em>Aphodius pedellus</em> typically inhabits pastures, meadows, and woodland edges where mammalian dung is available, as dung beetles in this genus rely on feces as both a breeding medium and a food resource. These beetles play a critical role in nutrient cycling and soil aeration, breaking down organic waste and accelerating the return of nutrients to the soil. Their burrowing activity beneath dung pats enhances soil structure and improves water infiltration. <em>Aphodius pedellus</em> is part of a guild of coprophagous insects that collectively support healthy agricultural and natural ecosystems across temperate Europe and North America. Biological traits of this species remain poorly documented in the scientific literature.
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。
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