Animal Migration, Orientation and Navigation by Sidney A. Gauthreaux

By Sidney A. Gauthreaux

Animal Migration, Orientation, and Navigation provides a number of the features of animal migration, together with the evolution of migration, climatic and meteorological impacts, and bioenergetics. This e-book discusses the physiological keep an eye on, sensory structures, orientation and navigation, and organic clocks and phenology features of animal migration.

Organized into 5 chapters, this ebook starts with an outline of the migration concepts of animals within the context of an area continuum. this article then explains the impact of brief- and long term climatic cycles at the spectrum of migratory styles in nature. different chapters contemplate the full of life standards of alternative migration recommendations and the strength shops of the migrants. This booklet discusses to boot the physiological foundation of animal migration, with emphasis on endocrinal findings at the timing and lively features of other migration innovations. the ultimate bankruptcy offers with the mechanisms utilized in path discovering by means of migrating animals.

This ebook is a priceless source for biologists and ecologists.

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CONCLUSIONS: T H E ADAPTIVE SIGNIFICANCE OF MIGRATION IN TERRESTRIAL ARTHROPODS Because of their small size, short generation times, tractability for both laboratory and field analysis, and considerable economic importance, we perhaps know more about the migrations of insects than of any other group. That there is enormous variation in migration strategies, keyed to specific life history adaptations, is obvious. Yet running through this diver­ sity is a common thread of adaptation to shifting environments.

Thoracicus in Tvärminne Archipelago of southern Finland Temporary ponds, streams, ditches; cool summers Seasonal dimorphism (polyphenism); long-winged win­ ter (diapause), short-winged summer generations G. thoracicus and G. gaster in Finland Temporary ponds, streams, ditches; long warm summers Long-winged diapause (over­ wintering) generation of especially strong flyers; sum­ mer generation dimorphic (polyphenic) G. odontogaster Ponds, medium sized lakes and streams; cool summers Seasonal dimorphism (poiyphenism); long-winged win­ ter (diapause), short-winged summer generations G.

Second, they are migratory to an extraordinary degree throughout their lives with nymphs or "hoppers" "marching" across the landscape in large groups while the adults form large milling swarms carried by the prevailing winds (Rainey, 1976, 1978). Swarm cohesion is maintained by the intense gregariousness of individual locusts. Phase solitaria also migrates but not in swarms and by night rather than by day. The winds bring gregaria to areas of rains where they consume fresh vegetation and reproduce (Rainey, 1976, 1978).

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