El estudio integral de la biología, el comportamiento, la fisiología y la ecología de los animales, que incluye la producción ganadera, la nutrición, la reproducción y el bienestar animal, la conservación de la fauna silvestre y las relaciones evolutivas entre especies animales
5 artículosResearchers analyzed 80 TikTok videos from Lomé, Togo, documenting the online sale of wild meat, including endangered species like the pangolin. The videos, viewed nearly 1.8 million times, highlighted the platform's role in facilitating this trade and raising conservation and animal welfare concerns.
In a simplified uterus model, human and mouse embryos exert forces to invade surrounding tissue, but with different patterns. Human embryos burrow in, while mouse embryos spread out on the surface. External forces can influence the direction of invasion and potentially the orientation of the developing embryo's body axis.
Pissarrachampsa, a Cretaceous notosuchian, exhibited differential growth rates in its limb bones, with the tibia growing fastest and the fibula slowest. Histological analysis revealed fibrolamellar bone tissue and varying vascularization patterns, indicating a young adult ontogenetic stage and potential adaptations for cursorial locomotion.
Domestic chickens primarily descend from Red junglefowl, but their genomes also contain contributions from Grey, Ceylon, and Green junglefowl through introgression. The extent of introgression varies geographically, suggesting chickens acquired these genetic additions during their dispersal across the globe after domestication.
This paper, which was later revealed to be fraudulent, claimed the discovery of a "missing link" in human evolution, consisting of a skull and jaw found in Pleistocene gravels in Piltdown, England. It argued that these remains represented an early hominid with both ape-like and human-like characteristics, suggesting a unique evolutionary lineage in Britain.