Results 51 to 60 of about 173,899 (302)

Inspection of chicken wings and legs for animal welfare monitoring using X-ray computed tomography, visual examination, and histopathology

open access: yesPoultry Science
: In broiler chickens, fractures of wings and legs are recorded at poultry slaughterhouses based on the time of occurrence. Prekilling (PRE) fractures occur before the death of animal, so the chicken was still able to experience pain and distress ...
Kacper Libera   +6 more
doaj   +1 more source

Phenotypic characterization of local female duck populations in Indonesia

open access: yesJournal of Asia-Pacific Biodiversity, 2019
Information on phenotypic traits is a prerequisite in animal genetic resource conservation and improvement. Phenotypic characteristics of 180 Indonesian female ducks collected from six populations (Alabio, Bayang, Magelang, Pegagan, Pitalah, and Rambon ...
Dyah Maharani   +4 more
doaj   +1 more source

Does IGF-1 Shape Life-History Trade-Offs? Opposite Associations of IGF-1 With Telomere Length and Body Size in a Free-Living Bird

open access: yesFrontiers in Ecology and Evolution, 2022
Hormonal pathways have been proposed to be key at modulating how fast individuals grow and reproduce and how long they live (i.e., life history trajectory).
Bibiana Montoya   +8 more
doaj   +1 more source

Courtship in Drosophila Mosaics: Sex-Specific Foci for Sequential Action Patterns [PDF]

open access: yes, 1976
Mosaic fate mapping is used to locate the foci determining sex-specific steps in the mating behavior of Drosophila. Male performance of following females and displaying wing vibration toward them requires that a focus inside the head be constituted of ...
Benzer, Seymour, Hotta, Yoshiki
core   +2 more sources

Flappy Hummingbird: An Open Source Dynamic Simulation of Flapping Wing Robots and Animals [PDF]

open access: yes2019 International Conference on Robotics and Automation (ICRA), 2019
Insects and hummingbirds exhibit extraordinary flight capabilities and can simultaneously master seemingly conflicting goals: stable hovering and aggressive maneuvering, unmatched by small scale man-made vehicles. Flapping Wing Micro Air Vehicles (FWMAVs) hold great promise for closing this performance gap.
Fei, Fan   +4 more
openaire   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Peptide-Based Vaccines for Tuberculosis

open access: yesFrontiers in Immunology, 2022
Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis. As a result of the coronavirus disease 2019 (COVID-19) pandemic, the global TB mortality rate in 2020 is rising, making TB prevention and control more challenging ...
Wenping Gong   +6 more
doaj   +1 more source

The control of wing kinematics and flight forces in fruit flies (Drosophila spp.) [PDF]

open access: yes, 1998
By simultaneously measuring flight forces and stroke kinematics in several species of fruit flies in the genus Drosophila, we have investigated the relationship between wing motion and aerodynamic force production. We induced tethered flies to vary their
Dickinson, Michael H.   +1 more
core  

Provenance does matter: links between winter trophic segregation and the migratory origins of European robins [PDF]

open access: yes, 2016
Amongst migratory species, it is common to find individuals from different populations or geographical origins sharing staging or wintering areas.
Bearhop, Stuart,   +7 more
core   +1 more source

Strength through diversity: how cancers thrive when clones cooperate

open access: yesMolecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken   +3 more
wiley   +1 more source

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