BOTTLENOSE DOLPHIN (Tursiops truncatus truncatus): Northern Gulf of Mexico Bay, Sound, and Estuary Stocks
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چکیده
NOTE – NMFS is in the process of writing individual stock assessment reports for each of the 32 bay, sound and estuary stocks of bottlenose dolphins that are included in this report. Until this effort is completed and this report is replaced by 32 individual reports, basic information for all individual bay, sound and estuary stocks will remain in this report: “Northern Gulf of Mexico Bay, Sound and Estuary Stocks”.
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BOTTLENOSE DOLPHIN (Tursiops truncatus): Northern Gulf of Mexico Bay, Sound, and Estuarine Stocks 2009
STOCK DEFINITION AND GEOGRAPHIC RANGE Bottlenose dolphins are distributed throughout the bays, sounds and estuaries of the Gulf of Mexico (Mullin 1988). The identification of biologically-meaningful " stocks " of bottlenose dolphins in these waters is complicated by the high degree of behavioral variability exhibited by this species (Shane et al. 1986; Wells and Scott 1999; Wells 2003), and by ...
متن کاملPOPS IN MARINE MAMMALS: LEVELS AND EFFECTS PREDICTED BIOACCUMULATION OF PCBs AND TOXAPHENE IN BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS): THE CONTRIBUTION OF CONTAMINATED PREY
Residues of two organochlorines (OCs) -Aroclor 1268 (a highly chlorinated PCB formulation) and toxaphene (a DDT-replacement pesticide) -are major persistent contaminants in St. Simons Sound near Brunswick, Georgia, USA. Although studies have recently documented OC levels in Brunswick area fish that are routinely consumed by humans, little is known about organochlorine body burdens in resident m...
متن کاملA common bottlenose dolphin (Tursiops truncatus) prey handling technique for marine catfish (Ariidae) in the northern Gulf of Mexico
Few accounts describe predator-prey interactions between common bottlenose dolphins (Tursiops truncatus Montagu 1821) and marine catfish (Ariopsis felis Linnaeus 1766, Bagre marinus Mitchill 1815). Over the course of 50,167 sightings of bottlenose dolphin groups in Mississippi Sound and along the Florida coast of the Gulf of Mexico, severed catfish heads were found floating and exhibiting movem...
متن کاملNiche Differentiation and Prey Selectivity among Common Bottlenose Dolphins (Tursiops truncatus) Sighted in St. George Sound, Gulf of Mexico
Citation: Wilson RM, Tyson RB, Nelson JA, Balmer BC, Chanton JP and Nowacek DP (2017) Niche Differentiation and Prey Selectivity among Common Bottlenose Dolphins (Tursiops truncatus) Sighted in St. George Sound, Gulf of Mexico. Front. Mar. Sci. 4:235. doi: 10.3389/fmars.2017.00235 Niche Differentiation and Prey Selectivity among Common Bottlenose Dolphins (Tursiops truncatus) Sighted in St. Geo...
متن کاملBOTTLENOSE DOLPHIN (Tursiops truncatus): Northern Gulf of Mexico Continental Shelf Stock 2009
STOCK DEFINITION AND GEOGRAPHIC RANGE The northern Gulf of Mexico (i.e., U.S. Gulf of Mexico) continental shelf bottlenose dolphin stock inhabits waters from 20 to 200 m deep in the northern Gulf from the U.S.-Mexican border to the Florida Keys (Figure 1). Both “coastal” and “offshore” ecotypes of bottlenose dolphins occur in the Gulf of Mexico (Hersh and Duffield 1990; LeDuc and Curry 1998). T...
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