Fox S.,Utila Whale Shark Research |
Foisy I.,Utila Whale Shark Research |
De La Parra Venegas R.,Chooj Ajauil AC |
Galvan Pastoriza B.E.,Chooj Ajauil AC |
And 4 more authors.
Journal of Fish Biology | Year: 2013
There were 479 reported whale shark Rhincodon typus encounters between 1999 and 2011 at the island of Utila, which forms part of the Meso-American Barrier Reef System (MBRS) in the western Caribbean Sea. The majority of R. typus were found to feed on small bait fish associated with various tuna species. Ninety-five individual R. typus, ranging from 2 to 11m total length (LT), were identified through their unique spot patterns. A significant male bias (65%) was present. There was no significant difference between the mean±s.d. LT of female (6·66±1·65m) and male (6·25±1·60m) R. typus. Most R. typus were transient to Utila, with 78% sighted only within a single calendar year, although some individuals were sighted in up to 5years. Mean residency time was modelled to be 11·76days using maximum likelihood methods. © 2013 The Fisheries Society of the British Isles.