Table 5. Summary of brevetoxin exposure to live and dead Gulf of Mexico bottlenose dolphins.

						[PbTx] range; ng/g or ng/mL
Region	Location	Year(s)	Mortality event?; # dead	K. brevis present; max cells/L (x106)	% of tested animals PbTx positive	GI Contents/fluids	Liver	Feces	Urine	Blood/serum	Comments	Reference
Northern Gulf of Mexico Dolphins
	Northwest Florida	1999–2000	yes; 162	16	52%	28-500+	<dl–138					current study
	Northwest Florida	2004	yes; 107	≤0.001	100%	<dl –29,126	<dl–104	<dl–1,152	<dl–143	<dl–16		current study
	Northwest Florida	2005–2006	yes; 89	4.8	93%	<dl–2,724	<dl–278	<dl–143	<dl–48	<dl–35		current study
	Northwest Florida	2005–2006	no	≤0.001	47%				<dl	<dl–1.1	23%: elevated eosinophils	[65]
	Texas	2008	yes; 119	≤0.001	13%	<dl		<dl–19	<dl			[62]
Southwest Florida Dolphins
	Sarasota, FL	1994, 1999, 2001	no	≤0.001	56%		<dl–21				Strandings during non-K. brevis bloom periods	[80]
	Sarasota, FL	2000, 2004, 2006, 2008, 2009	no	≤0.001	36%	<dl–10		<dl–109	<dl–90	<dl	Live captures during non-K. brevis bloom periods	[40]
	Sarasota, FL	2001–2003	no	105	84%	<dl–2,896	<dl–71	288 – 749	<dl–100		Strandings during K. brevis bloom, no mortality event declared	[80]
	Sarasota, FL	2004, 2005	no	3.8	38%				<dl–7	<dl –2	Live captures during K. brevis bloom periods	[40]
	Southwest Florida (multiple counties)	2005–2006	yes; 190*	162	72%	<dl–26,390	<dl–788	<dl–774	<dl–54	<dl–13	Central West Florida Multi-Species 2005–2006 Unusual Mortality Event	NOAA and FWC, unpublished data

^*All dolphin strandings in Pinellas, Manatee, Sarasota, Charlotte, and Collier counties during specified time period between July 2005 and Nov 2006, including 17 live strandings and all causes of death, known and unknown.