Integrated use of moon and magnetic compasses by the heart-and-dart moth, Agrotis exclamationis

  title={Integrated use of moon and magnetic compasses by the heart-and-dart moth, Agrotis exclamationis
  author={R. Robin Baker},
  journal={Animal Behaviour},
  • R. R. Baker
  • Published 1 February 1987
  • Physics
  • Animal Behaviour
The moon orientation of the equatorial sandhopper Talorchestia martensii Weber
  • A. Ugolini
  • Physics
    Behavioral Ecology and Sociobiology
  • 2016
Some experiments carried out using the equatorial sandhopper Talorchestia martensii during the zenithal culmination of the moon to clarify its use as an orienting cue taking into account the already demonstrated use of the magnetic field in the orientation of this species.
How dim is dim? Precision of the celestial compass in moonlight and sunlight
The results show that celestial orientation is as accurate during crescent Moon as it is during full Moon, and this orientation accuracy is equal to that measured for diurnal species that orient under the 100 million times brighter polarization pattern formed around the Sun.
The role of the antennae in the compass-based orientation of the equatorial sandhopper Talorchestia martensii Weber (Crustacea Amphipoda)
The photopositive responses showed by individuals released under high azimuthal speed of the moon and with the horizontal component of the magnetic field zeroed, indicate that the moon is probably not used as a chronometric compass reference in this species because of the variations in its azimUTHal speed.
The authors' calculations have shown that in the period of the New Moon when there is no measurable moonlight, the higher values of the horizontal component are accompanied by a falling relative cat ch, and in the other moon phases, i.e. in the First Qua rter, Full Moon and the Last Quarter, growing values of t he horizontal component is accompanied by an increasing catch in both the moonlit and moonless periods.
Lunar orientation in a beetle
It is found that artificially changing the position of the moon, or hiding the moon's disc from the beetle's field of view, generally did not influence its orientation performance, and it is concluded that the moon does not serve as the primary cue for orientation.
Magnetic orientation and the magnetic sense in arthropods.
The physical properties of the earth's magnetic field are summarized with the aim of emphasizing their significance as cues that can be exploited in orientational tasks. Past work has revealed
Light trapping as a dependent of moonlight and clouds.
The number of the Macrolepi doptera individuals and species are higher when the sky is clear than overcast in the event both the al l and low clouds, and it was found that the height of cloud base also modify the light-trap catch.
Do neotropical migrant butterflies navigate using a solar compass?
The observed constant flight bearing of natural controls suggests that these species are capable of performing time-compensated celestial navigation, and clock-shift experiments suggest that a sun compass is involved.
Light-trap catch of cotton bollworm, Helicoverpa armigera in connection with the moon phases and geomagnetic H-index
This study addresses the question whether to what extent (if any) light-trap catch of the harmful pest, Helicoverpa armigera (Hübner, 1805) depends on the Moon phases and the geomagnetic horizontal component (H-index).
Vertical-Looking Radar: A New Tool for Monitoring High-Altitude Insect Migration
Abstract Many insect species engage in high-altitude, wind-borne migration, often several hundred meters above the ground. At these heights they can use the wind to travel tens or hundreds of


Relative importance of stars and the magnetic field for the accuracy of orientation in night-migrating birds
In the natural geomagnetic field or a field of comparable intensity (0.46 Gauss), the vector length rm of the test series, calculated from the headings of the individual test nights, was similar in
Observations of the flight behaviour of the army worm moth, Spodoptera exempta, at an emergence site using radar and infra‐red optical techniques
Studies were made in Kenya of the flight behaviour of African armyworm moths which had emerged from areas previously infested with‘gregarious’ Caterpillars, and moths were observed to disperse rapidly during their migration.
Additional evidence supports the hypothesis that the lunar orientation of Talitrus is due to a continuously-operating lunar physiological rhythm.
Skylight polarization patterns at dusk influence migratory orientation in birds
It is reported here that the migratory orientation of the white-throated sparrow (Zonotrichia albicollis), a nocturnal migrant, is affected by manipulations of the axis of skylight polarization, providing the first evidence that polarized light may be a relevant cue in migratory Orientation.
The distance and nature of the light-trap response of moths
LIGHT TRAPS of various forms have been used to collect and study moths for well over 100 yr, but surprisingly little is known about how they attract moths. There has been some evaluation of the
The Migratory Orientation of Garden Warblers, Sylvia borin
A reivew of the studies on the migratory orientation of Garden Warblers, Sylvia borin, indicates that the relative importance of stars and the magnetic field varies in the course of time: During
A demonstration of navigation by small rodents using an orientation cage
It is presented the first positive evidence that small rodents will navigate while retained in an orientation cage, even when able to see their surroundings, and suggested why orientation cages have previously led to negative results.
Magnetic Compass of European Robins
The magnetic compass of European robins does not use the polarity of the magnetic field for detecting the north direction, so birds take the direction on the magnetic north-south axis for "north" where field lines and gravity vector form the smaller angle.