Results 11 to 20 of about 2,960 (164)
Honeybees and Magnetoreception [PDF]
Science, 1995 Studies of honeybee magnetoreception that provide anatomical and biophysical constraints on the insect receptor system contradict the conclusions of Hsu and Li in their report about iron granules in the abdominal trophocytes of honeybees.
H, Nichol, M, Locke
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Current Biology, 2010 Few subjects in animal behavior have more exotic mystery than magnetic-field sensitivity. A force we cannot sense, generated by events no one completely understands, creates field lines that pass through our bodies without any evident effect on us or on them. It is an energy felt as much by migrating lobsters on the sea floor as by ocean-crossing birds
G. Fleissner, G. Fleissner
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Quantum biology: From mechanisms to medicine. [PDF]
Clin Transl MedQuantum biology across systems: from mechanisms to medicine. This graphical abstract highlights how quantum phenomena‐coherence, tunnelling and spin dynamics‐shape fundamental biological processes and point towards quantum‐informed medicine. In photosynthesis, quantum coherence supports near‐lossless exciton transport across pigment–protein complexes ...
Sung JY, Cheong JH.
europepmc +2 more sources
Shifting Balancing Selection Underlies an Inversion Cline in Eurasian Blackcap. [PDF]
Ecol EvolWe investigated what factor contributes to a cline of a chromosomal inversion of the Eurasian blackcap, which differs from typical inversion clines maintained by divergent selection. Using a simulation‐based machine learning approach, we found that the inversion is under negative frequency‐dependent selection, and the optimal frequency is shifted ...
Ishigohoka J, Liedvogel M.
europepmc +2 more sources
How important are quantum mechanical effects in controlling biological functions: Enzymes, electron transfer and bird navigation. [PDF]
Protein SciAbstract In light of the centennial of the Schrödinger equation, this article addresses the popular idea that quantum mechanical effects play an important role in biological systems. We start by defining what is qualified as a quantum effect. We then clarify the idea that quantum mechanical tunneling is a crucial factor in enzyme catalysis.
Zhang A, Warshel A.
europepmc +2 more sources
Magnetoreception in birds [PDF]
Journal of The Royal Society Interface, 2019 Birds can use two kinds of information from the geomagnetic field for navigation: the direction of the field lines as a compass and probably magnetic intensity as a component of the navigational ‘map’. The direction of the magnetic field appears to be sensed via radical pair processes in the eyes, with the crucial radical pairs formed by cryptochrome ...
Roswitha Wiltschko, Wolfgang Wiltschko
openaire +2 more sources
A Novel Light-Induced Collective Circular Movement in <i>Armadillo sordidus</i> Isopods. [PDF]
Ecol EvolWe describe an interesting aggregative behavior in terrestrial isopods. We conclude that this behavior is in response to intense artificial lighting. ABSTRACT Collective movement in terrestrial isopods has rarely been documented and almost never discussed.
Sheizaf I, Itzkovich E, Chipman AD.
europepmc +2 more sources
Magnetoreception in fish [PDF]
Journal of Fish Biology, 2019 AbstractMagnetoreception is the ability of organisms to perceive magnetic fields in the surrounding environment and changes in its properties such as field direction, intensity and gradient, where the effect on organisms can manifest as an array of reactions.
Krzysztof Formicki +2 more
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An assay to investigate factors influencing initial orientation in nocturnally fledging seabirds
Journal of Avian Biology, 2021 The first solitary migration of juvenile birds is difficult to study because of a low juvenile survival rates and sometimes long delays in return to the breeding grounds.
Martyna Syposz +5 more
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Frontiers in Neuroanatomy, 2022 In night-migratory songbirds, neurobiological and behavioral evidence suggest the existence of a magnetic sense associated with the ophthalmic branch of the trigeminal nerve (V1), possibly providing magnetic positional information. Curiously, neither the
Katrin Haase +8 more
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