Exam 10: Mechanisms of Orientation and Behavior

Direction finding and navigation over both long and short distances, using cues in places where visual information is limited or absent, and where cues are constant year round, night and day, will most likely involve use of

A member of a migratory species of bird is displaced to a distant location and then released. If it continues in the same direction in which it had originally been traveling it is displaying use of

Most first time migrant birds reach their destination without knowing where that goal is located. To do this they may make use of an innate process called vector navigation. Evidence supporting the idea of vector navigation is the finding that

Because the magnetic compass of birds appears to be an inclination compass, and since most migratory birds inherit a program that tells them to travel in a certain geographical direction for a certain amount of time,

True navigation has been found in

True navigation requires

The aspect of the earth's magnetic field that consists of the angle the line of force makes with the horizon is referred to as the field's

Which of the following is likely to distort the electrical field surrounding an electric fish by drawing the current in its direction?

Tinbergen and Krypt (1938) demonstrated that the digger wasp (Philanthus triangulum) relies on landmarks to relocate its nest after a foraging flight by placing a ring of 20 pine cones around the nest opening

When Ansell's mole rats, a subterranean species, are housed in circular arenas in a laboratory, they reliably and spontaneously build their nests in the southeastern sector of the arena. When the researchers reversed the polarity of the moles' magnetic field by reversing the direction of current flow through a Helmholtz coil, the moles

Which of the following species has NOT been found to be sensitive to magnetic fields?

Franz and Eleonore Sauer demonstrated that, when placed inside a planetarium so that the nighttime sky could be controlled, sylviid warblers oriented themselves in the proper migratory direction for that time of year by taking their bearings from the

If you are thinking, "Go down this road until I get to the house with the white fence, turn right and go that way until I get to the intersection with the convenience store, then turn left and travel to the fifth house on the right," you are getting home by means of

Gustav Kramer was among the first to determine that birds migrating during the day use the sun as a navigational cue by noting that caged starlings (Sturnus vulgaris) oriented in the normal migratory direction

We now know more details about time-compensated sun orientation.

The plane of polarization of sunlight is always

Goff et al. (1998) performed an experiment in which hatchling loggerhead sea turtles swam into surface waves in tanks for either 15 minutes or for 30 minutes. Their orientation was then tested in still water and in a magnetic field.

If an animal displays the ability to maintain reference to a goal that it cannot sense directly at the time, regardless of its location, without the use of landmarks, it is displaying

Birds have been placed on an artificial light-dark cycle in a laboratory that initially corresponds to the natural lighting conditions outside; the lights are on from 6:00 a.m. to 6 p.m. The light period is then shifted so that the lights come on at 9:00 a.m. In this case, if the biological clock is used to compensate for the movement of the sun, orientation in these subjects should be off by

On average, the sun appears to move how many degrees per hour across the sky?