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Production of Organic Precursors via Meteoritic Impacts and Its Implications for Prebiotic Inventory of Early Planetary Surfaces.
Astrobiology
January 2025
NASA Goddard Space Flight Center, Greenbelt, Maryland, USA.
Meteoritic impacts on planetary surfaces deliver a significant amount of energy that can produce prebiotic organic compounds such as cyanides, which may be a key step to the formation of biomolecules. To study the chemical processes of impact-induced organic synthesis, we simulated the physicochemical processes of hypervelocity impacts (HVI) in experiments with both high-speed C projectiles and laser ablation. In the first approach, a C beam was accelerated to collide with ammonium nitrate (NHNO) to reproduce the shock process and plume generation of meteoritic impacts on nitrogen-rich planetary surfaces.
View Article and Find Full Text PDFSmall fish, large variation: Morphological diversity of Weberian apparatus in Noturus catfishes and ecological implications.
Anat Rec (Hoboken)
January 2025
Department of Integrative Biology, University of California, Berkeley, California, USA.
The Weberian apparatus is a hearing specialization unique to the otophysan fishes, and an unexpected degree of morphological variation exists in species of the Noturus catfishes. Our aim in this study is to investigate relationships between morphological variations and ecology that may drive this variation. Sampling 48 specimens representing 25 species, we investigated morphological diversity and accounted for ecological variables using landmark-based 3D geometric morphometrics and x-ray-based computed tomography (CT) images.
View Article and Find Full Text PDFGrowing with dinosaurs: a review of dinosaur reproduction and ontogeny.
Biol Lett
January 2025
Museo Argentino de Ciencias Naturales Bernardino Rivadavia , Buenos Aires, Argentina.
Since the start of the twenty-first century, there has been a notable increase in annual publications focusing on dinosaur reproduction and ontogeny with researchers using these data to address a range of macroevolutionary questions about dinosaurs. Ontogeny, which is closely tied to osteological morphological variation, impacts several key research areas, such as taxonomic diversity, population dynamics, palaeoecology, macroevolution, as well as the physiological and reproductive factors driving ecological success. While these broad studies have significantly advanced our understanding of dinosaur evolution, they have also revealed important challenges and areas needing further investigation.
View Article and Find Full Text PDFComparative Context of Hard-Tissue Sexual Dimorphism in Early Hominins: Implications for Alpha Taxonomy.
Evol Anthropol
March 2025
Center for the Advanced Study of Human Paleobiology, George Washington University, Washington DC, USA.
Article Synopsis
- Sexual dimorphism complicates the creation of alpha taxonomic classifications in early hominin fossils.
- The study explores factors influencing sexual dimorphism in primates, including body size differences, craniofacial traits tied to visual signaling, and growth patterns.
- Focusing on Paranthropus boisei, the study warns that focusing on skeleton regions affected by sexual selection can lead to inaccurate taxonomic assessments.
Conference 2024: Building an innovative scientific research ecosystem for microbiome and One Health.
Imeta
December 2024
Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural Sciences Shenzhen China.
The Conference 2024 provides a platform to promote the development of an innovative scientific research ecosystem for microbiome and One Health. The four key components - Technology, Research (Biology), Academic journals, and Social media - form a synergistic ecosystem. Advanced technologies drive biological research, which generates novel insights that are disseminated through academic journals.
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