Détail de la notice
Titre du Document
Seasonal movements, migratory behavior, and site fidelity of West Indian manatees along the Atlantic coast of the United States
Auteur(s)
DEUTSCH Charles J. ; REID James P. ; BONDE Robert K. ; ...
Résumé
The West Indian manatee (Trichechus manatus) is endangered by human activities throughout its range, including the U.S. Atlantic coast where habitat degradation from coastal development and manatee deaths from watercraft collisions have been particularly severe. We radio-tagged and tracked 78 manatees along the east coast of Florida and Georgia over a 12-year period (1986-1998). Our goals were to characterize the seasonal movements, migratory behavior, and site fidelity of manatees in this region in order to provide information for the development of effective conservation strategies. Most study animals were tracked remotely with the Argos satellite system, which yielded a mean (SD) of 3.7 (1.6) locations per day; all were regularly tracked in the field using conventional radiotelemetry methods. The combined data collection effort yielded >93,000 locations over nearly 32,000 tag-days. The median duration of tracking was 8.3 months per individual, but numerous manatees were tracked over multiple years (max = 6.8 years). Most manatees migrated seasonally over large distances between a northerly warm-season range and a southerly winter range (median one-way distance = 280 km, max = 830 km), but 12% of individuals were resident in a relatively small area (<50 km) year-round. The movements of one adult male spanned >2,300 km of coastline between southeastern Florida and Rhode Island. No study animals journeyed to the Gulf coast of Florida. Regions heavily utilized by tagged manate
Editeur
Wildlife Society
Identifiant
ISSN : 0084-0173 CODEN : WLMOAF
Source
Wildlife monographs A. 2003, vol. 151, pp. 1-77 [77 pages] [bibl. : 6 p.1/4]
Langue
Anglais
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