vs koala

Chrysochromulina mantoniae compared with Phascolarctos cinereus

Key Differences

• is Not Evaluated while koala is Vulnerable.

Taxonomic Classification

Rank		koala
Kingdom	Chromista (色藻界)	Animalia (动物界)
Phylum	Haptophyta (定鞭藻門)	Chordata (脊索动物门)
Class	Prymnesiophyceae (普林藻纲)	Mammalia (哺乳動物)
Order	Prymnesiales (定鞭金藻目)	Diprotodontia (雙門齒目)
Family	Chrysochromulinaceae	Phascolarctidae (Koalas)
Genus	Chrysochromulina	Phascolarctos (Koalas)
Species	Chrysochromulina mantoniae	Phascolarctos cinereus

Conservation Status

NE — Not Evaluated

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

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

Chrysochromulina mantoniae is a marine haptophyte alga named in honor of the pioneering British phycologist Irene Manton, whose electron microscopic studies of algal flagella and scales transformed the taxonomy of nanoplankton in the mid-twentieth century. The species belongs to the family Prymnesiaceae and displays the characteristic Chrysochromulina body plan: two heterodynamic flagella, a haptonema of variable length, and a cell surface coated with organic scales. C. mantoniae inhabits coastal marine waters of the North Atlantic, consistent with the geographic range of most formally described Chrysochromulina species. As a planktonic photosynthesizer and potential mixotroph, it contributes to the cycling of carbon and nutrients in the marine microbial food web. The haptonema's role in cell adhesion and prey capture has been studied extensively in closely related species, revealing complex behaviors including coiling and extension dynamics. The IUCN has not evaluated the conservation status of C. mantoniae, classifying it as Not Evaluated. This reflects the general absence of threat assessment methodology for free-living marine microorganisms whose populations are shaped largely by oceanographic rather than anthropogenic drivers.

koala

澳大利亚东部和东南部的标志性有袋类动物，体重最大可达15千克，为了节省低热量桉树叶食物所提供的能量，每天最多睡眠22小时。高度特化，能够处理会致大多数其他哺乳动物死亡的有毒桉树成分，拥有专门适应解毒功能的肠道微生物群。因衣原体病、栖息地开发和气候变化导致种群锐减，2022年被列为濒危物种。