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Home Range of Juvenile Lemon Sharks, Negaprion brevirostris
John F. Morrissey and Samuel H. Gruber
Vol. 1993, No. 2 (May 3, 1993), pp. 425-434
Stable URL: http://www.jstor.org/stable/1447141
Page Count: 10
You can always find the topics here!Topics: Sharks, Juveniles, Telemetry, Transmitters, Animals, Body size, Freshwater fishes, Mammals, Polygons, Fish
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Manual acoustic telemetry techniques were used to study spatial and temporal patterns of movement of juvenile lemon sharks. Ultrasonic transmitters were implanted into the coelom of 38 sharks, yielding trackings totaling 2281 telemetry fixes. Activity space varied from 0.23 km2 to 1.26 km2 and was positively correlated with shark size. Three indices of site attachment demonstrated that juvenile lemon sharks establish a home range. An index of site defense and field observations indicated that no territoriality was observed against conspecifics.