A MAGNETIC COMPASS RESPONSE OF AN ORGANISM
نویسندگان
چکیده
منابع مشابه
A magnetic compass aids monarch butterfly migration
Convincing evidence that migrant monarch butterflies (Danaus plexippus) use a magnetic compass to aid their fall migration has been lacking from the spectacular navigational capabilities of this species. Here we use flight simulator studies to show that migrants indeed possess an inclination magnetic compass to help direct their flight equatorward in the fall. The use of this inclination compas...
متن کاملChickens orient using a magnetic compass
Although behavioural experiments show that a wide range of animals use the earth’s magnetic field as a compass for orientation, evidence from conditioning experiments has proved elusive [1]. In birds, the only two successful attempts of operant conditioning to magnetic stimuli [2,3] both involved magnetic anomalies rather than changes in magnetic direction. By using the young domestic chick’s m...
متن کاملThe magnetic compass of domestic chickens
In a recent paper, we showed that domestic chickens can be trained to search for a social stimulus in specific magnetic directions. Chickens can hardly fly and have only small home ranges, hence their having a functional magnetic compass may seem rather surprising. Yet considering the natural habitat of their ancestors and their lifestyle until recently, the advantages of a magnetic compass bec...
متن کاملMagnetic optimization in a multicellular magnetotactic organism.
Unicellular magnetotactic prokaryotes, which typically carry a natural remanent magnetic moment equal to the saturation magnetic moment, are the prime example of magnetically optimized organisms. We here report magnetic measurements on a multicellular magnetotactic prokaryote (MMP) consisting of 17 undifferentiated cells (mean from 148 MMPs) with chains of ferrimagnetic particles in each cell. ...
متن کاملCalculating Magnetic Permeability Response of a Conducting Square Ring Structure
In the present work, we investigate the tunability of the magnetic response of a new structure. A lattice of periodically arranged close-packed square conducting rings has been studied for this purpose. Here, instead of enhancing the magnetic activity via resonance, like in split-ring resonators, we concentrate on the analysis of the interactions between these rings. The core idea is to design ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1960
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1538933