دانلود گزارش کارورزی و کار آموزی

چکیده : 

Synchronous behavior, as a form of social interaction, has been widely reported for odontocete cetaceansobserved at the sea urface. However, few studies have quantified synchronous behavior underwater.Using data from an animal-borne data recorder and camera, we described how a pair of deep-diving odon-tocetes, long-finned pilot whales, coordinated diving behavior. Diving data during overlapping periodsof 3.7 h were obtained from two whales within a stable trio. The tagged whales made highly synchronousmovements, and their dive durations differed only slightly (3 ± 3 s). The pair of whales maintained aconstant and narrow vertical separation (ca. 3 m) throughout synchronous dives. The overall flukingrate for the same travel speed during synchronous dives was virtually the same as that during asyn-chronous dives, suggesting that synchronous behavior did not affect locomotion effort. In addition, apossible affiliative behavior was recorded by the animal-borne camera: another individual appeared in8% of the frames, both with and without body contact to the tagged whale. The primary type of bodycontact was flipper-to-body. Our study, the first on underwater synchronous behavior and body contactof pilot whales, highlights the utility of using animal-borne devices for enabling new insights into socialinteractions.