Dolphin blubber

Figure 3.8 Second-dimension chiral cyclodextrin capillary column separation of a non-racemic pair of nonachlorobomane compounds extracted from dolphin blubber, shown with expanded attenuation in the inset. The primary separation (not shown) was performed on an apolar primary capillary column. Reproduced from H.-J. de Geus et al. J. High Resol. Chromatogr. 1998, 21, 39 (59).

Humpback dolphin blubber 9111-59,542 69-19,979 2762-3275 South China Leung et al. (2005)... 

Dolphin blubber A sample of blubber was ground with anhydrous sodium sulphate and Soxhlet extracted for 8 h using 122... 

MBPS dolphin blubber Rtx-5 Crossbond(10x0.18x0.20)x BPX-50 (0.70x0.10x0.10) quad-jet dual-stage modulator, LN2 ToFMS [28]... 

Figure 6 Section of the GCxGC-ToF MS contour plot of (A) the total in current of MBP standards and (B) the MBPs (m/z 496, 540, 575, 620, 654, and 698) in a dolphin blubber extract. Detected MBP peaks are indicated by a coloured circle (yellow, white, and orange) the internal standard is indicated by a red circle lines indicate the MBP containing bromine (top, yellow) and chlorine (bottom, white) peaks eluting above these lines are proposed to be MBPS (orange circle) [28],...

Dolphins and toothed whales blubber total PCBs... 

Dolphin, Stenella attenuata eastern tropical Pacific Ocean 1977-85 Blood Brain Blubber Kidney Liver Muscle Pancreas... 

Striped dolphin, Stenella coeruleoalba Blubber Muscle... 

Pacific white-sided dolphin, Lagenorhynchus obliquidens, Japan, 1981 blubber Total PCBs PCB 77 PCB 126 PCB 169... 

During a mass mortality event on the south Atlantic coast in 1987 1 988, blubber samples were collected from three bottlenose dolphins Tursiops truncatus)-, these samples contained 180 220 ng PBDEs/g lipid (Kuehl et al. 1991). Blubber samples, taken from stranded bottlenose dolphins from several locations around the Gulf of Mexico in 1990, contained 3,110 ng PBDEs/g lipid (Kuehl and Haebler 1995). On... 

Vetter W, Scholz E, Gaus C, Miiller JF, Haynes D (2001) Anthropogenic and Natural Organohalogen Compounds in Blubber of Dolphins and Dugongs (Dugong dugon) from Northeastern Australia. Arch Environ Contam Toxicol 41 221... 

Levels of POPs in two local marine mammals, the Indo-Pacific humpback dolphin (Sousa chinensis) and Unless porpoise (Neophocaena phocaenoides), were measured in two ad hoc studies of stranded cetaceans in 1995-2000 and 2000-2001, respectively (Jefferson et al., 2002 Imanishi et al., 2004). Cetacean tissue samples were collected from stranded animals found in Hong Kong and analyzed for DDT, mirex, toxaphene and PCBs. High mean blubber concentrations of DDT (32.8 mg kg-1 ww) and PCBs (8.19 mg kg-1 ww) were reported. 

Among the organochlorine compounds measured in these three species of marine mammals from the southeast coast of India, Tanabe et al. (1993) found that the concentrations of DDTs ranked first, followed by PCBs, HCHs and HCB (Table 9.5). In spite of its low levels in the Indian environmental samples and terrestrial biota (Ramesh et al., 1989, 1990, 1991, 1992 Tanabe et al., 1990 Kannan et al., 1992) DDTs were found to be predominant in the blubber tissues of the dolphins collected from the coastal areas of southeastern India. 

In the blubber samples of three spinner dolphin (Stenella longirostris) specimens, Iwata et al. (1994) found very low levels of butyl tin compounds (2ng g-1 wet wt.) of tri-, di- and monobutyl tins. In the same three specimens Minh et al. (2000a) found 31 ng g-1 (8.7-63) of TCPMe and 36 ng g-1 (10-58) of TCPMOH in the blubber which are lower than the values found in marine mammals from the colder mid-latitude oceans. Other than the above-cited works, we could not find any other literature providing information on the quantities of persistent toxic substances in the tissues of aquatic mammals of India. 

Table 9.5. Concentration of persistent organochlorine residues in blubber of dolphins from Porto Novo (Bay of Bengal) coastal waters, South India... 

Carballo, M., et al. (2008) Organochlorine residues in the blubber and liver of botdenose dolphins (Tursiops truncatus) stranded in the Canary Islands, North Atlantic Ocean. Environmental Toxicology 2008 200-10. http //www.ncbi.nhn.nih.gov/pubmed/18214918. Cited 28 January 2009. 

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