树懒堪称哺乳动物界的"消化马拉松选手"，其食物分解耗时长达普通草食动物的5-20倍。为探究这种极端生理现象背后的微生物机制，科学家们对两种生态习性迥异的树懒——活动迟缓的Bradypus variegatus（代谢率更低）与相对活跃的Choloepus hoffmanni展开深度研究。 通过高通量宏基因组测序（metagenomics）和 ...

Brown-throated three-toed sloth (Bradypus variegatus) in the wild, forest of Costa Rica, Latin America. Image via Depositphotos In the tropical rainforests of Central and South America, the three-toed ...

Brown-throated three-toed sloth (Bradypus variegatus) in the wild, forest of Costa Rica, Latin America. Image via Depositphotos The dangers sloths face during their bathroom excursions cannot be ...

沉积物来源碳向黑蚯蚓（Lumbriculus variegatus）和鲫鱼（Carassius carassius）的转移：对淡水生态系统14C生物圈评估的启示 《Ecotoxicology and Environmental Safety》：Transfer of sediment-derived carbon into blackworm ( Lumbriculus variegatus) ...

Object Details Collector John E. Randall Ocean/Sea/Gulf Indian Ocean, Red Sea, Gulf of Aqaba Notes Specimen measurements as written on the slide mount: SL (mm)= 59; TL (mm)= 69 This material is part ...

Figure 1 Records of Harpy Eagles and Crested Eagles in the area under the influence of Belo Monte Complex and nests mapped in the area of PAN of the Low- and Mid-Xingu River. The records for Harpy ...

Sloths, the world's slowest mammal, have been around for 64 million years. Sharyn Alfonsi traveled to Costa Rica to learn more about how they've survived.

Physicists from Heinrich Heine University Düsseldorf (HHU) have, in collaboration with colleagues from Darmstadt and Dresden, examined the movement in clusters of active, self-propelled, flexible ...