A preliminary risk assessment of organochlorines accumulated in fish to the Indo-Pacific humpback dolphin (Sousa chinensis) in the Northwestern waters of Hong Kong.
Environ Pollut
; 144(1): 190-6, 2006 Nov.
Article
de En
| MEDLINE
| ID: mdl-16516360
ABSTRACT
The Indo-Pacific humpback dolphin is considered threatened due to several factors including pollution in Hong Kong and the risks due to consumption of fish tainted with polychlorinated biphenyls (PCBs) and organochlorine pesticides were assessed. Six species of fish Collichthys lucida, Pseudosciaena crocea, Johnius sp., Thryssa sp., Mugil sp. and Trichiurus sp., which comprise the main prey species of humpback dolphins were collected for analyses. Risks due to total PCBs, total TEQs, PCB 118 and the pesticides were assessed with the use of toxicity reference values as the threshold reference benchmarks. The calculated risk quotients (RQs) showed that the risks associated with organochlorines were generally low. The highest RQ was associated with total TEQs suggesting that dioxin-like PCBs may pose the highest risk to the dolphins. The HCHs, total PCBs and heptachlor had comparatively high RQs and thus they should also be the priority organochlorines that would require further investigation.
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Polluants chimiques de l'eau
/
Dauphins
/
Poissons
/
Hydrocarbures chlorés
Type d'étude:
Etiology_studies
/
Risk_factors_studies
Limites:
Animals
Pays/Région comme sujet:
Asia
Langue:
En
Journal:
Environ Pollut
Sujet du journal:
SAUDE AMBIENTAL
Année:
2006
Type de document:
Article
Pays d'affiliation:
Hong Kong