scholarly journals Analysis of sediments and soils for chemical contamination for the design of US Navy homeport facility at East Waterway of Everett Harbor, Washington. Final report. [Macoma inquinata; Mytilus edulis]

1985 ◽  
Author(s):  
J.W. Anderson ◽  
E.A. Crecelius
Author(s):  
John Widdows ◽  
Peter Donkin ◽  
Sheila V. Evans ◽  
David S. Page ◽  
Peter N. Salkeld

SynopsisMussels (Mytilus edulis), collected from up to nine sites, were used to monitor the degree of chemical contamination (by petroleum hydrocarbons and organotins) and the associated sublethal biological effects (scope for growth) in the vicinity of the North Sea oil terminal at Sullom Voe from 1982 to 1989. Gluss Voe represented a ‘clean reference’ site at which mussels showed a very low level of contamination and a consistently high ‘scope for growth’ (>20 J g−1 h−1). Spatial and temporal changes in the concentration of polyaromatic hydrocarbons in the mussel tissues reflected the major sources of oil inputs and the number and size of oil spillages around the tanker loading jetties. Hydrocarbon concentrations in mussels at the oil tanker jetties were typically 10-fold higher than mussels at Gluss Voe. The concentrations of tributyltin in the tissues were greatest in the area near the tanker jetties and showed a steady decline between 1986 and 1989 which correlated with a decline in tanker activity (r = +0.98).The results demonstrated a significant correlation between the net quantity of oil spilled during the month prior to sampling and the accumulated aromatic hydrocarbons in the mussel tissues (r = +0.89). In addition, there was a significant negative relationship between scope for growth and the log concentration of aromatic hydrocarbons in the mussel tissues (r = −0.83). Toxicological interpretation of tissue residue data indicated that the decline in SFG was caused by accumulated PAHs rather than TBT. Although mussels showed a significant reduction in scope for growth in Sullom Voe they were still able to grow, reproduce and maintain their populations. When these results are placed in a wider geographical context and compared with other UK sites, it is apparent that the ‘clean reference’ site in the Shetland has the lowest recorded levels of organic contaminants, and that other sites in the vicinity of the Sullom Voe Oil Terminal are less contaminated and impacted than many estuaries on the UK mainland.


Author(s):  
Anthony A. Paparo ◽  
Judith A. Murphy

The purpose of this study was to localize the red neuronal pigment in Mytilus edulis and examine its role in the control of lateral ciliary activity in the gill. The visceral ganglia (Vg) in the central nervous system show an over al red pigmentation. Most red pigments examined in squash preps and cryostat sec tions were localized in the neuronal cell bodies and proximal axon regions. Unstained cryostat sections showed highly localized patches of this pigment scattered throughout the cells in the form of dense granular masses about 5-7 um in diameter, with the individual granules ranging from 0.6-1.3 um in diame ter. Tissue stained with Gomori's method for Fe showed bright blue granular masses of about the same size and structure as previously seen in unstained cryostat sections.Thick section microanalysis (Fig.l) confirmed both the localization and presence of Fe in the nerve cell. These nerve cells of the Vg share with other pigmented photosensitive cells the common cytostructural feature of localization of absorbing molecules in intracellular organelles where they are tightly ordered in fine substructures.


1988 ◽  
Vol 33 (11) ◽  
pp. 992-993
Author(s):  
Bernard Weiss

2002 ◽  
Author(s):  
Teresa Nastoff ◽  
◽  
Diane M. Drew ◽  
Pamela S. Wigington ◽  
Julie Wakefield ◽  
...  

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