Risk assessment of trace elements in the stomach contents of Indo-Pacific Humpback Dolphins and Finless Porpoises in Hong Kong waters

Hung, Craig L.H.; Lau, Ridge K.F.; Lam, James C.W.; Jefferson, Thomas A.; Hung, Samuel K.; Lam, Michael Hon-Wah; Lam, Patrick T.I.

doi:10.1016/j.chemosphere.2006.08.005

Cited by 42 publications

(10 citation statements)

References 11 publications

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“…Effects of bacteria, nutrients, and hypoxia have been identified in coastal areas of Hong Kong, including Victoria Harbor, around which 65% of the city's population lives. The lower sections of the East River (Dong Jiang), which provides approximately 80% of the drinking water for Hong Kong, is contaminated by metals such as cadmium, copper, and zinc (Ip et al 2007;Ho et al 2003;Hung et al 2007) and persistent organic pollutants including polybrominated diphenyl ethers (PBDEs; Liu et al 2005;Ramu et al 2005), organochlorine pesticides (OCPs), and dioxin-like compounds (So et al 2005). PBDE contamination has also been found in Hong Kong marine waters with concentrations ranging from 31 to 1.2×10 2 pg l −1 (Wurl et al 2006), which probably arise from the disposal of electronics' industry wastes in southern China and the discharge of untreated wastewater of local origin.…”

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confidence: 99%

Modulation of steroidogenesis by coastal waters and sewage effluents of Hong Kong, China, using the H295R assay

Gracia

Jones

Higley

et al. 2008

Environ Sci Pollut Res

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Due to the intrinsic complexity of environmental samples, a combination of analytical tools is required to realistically assess environmental conditions, especially in aquatic systems. In the evaluation of endocrine disrupting activities, the H295R cell bioassay should be used in combination with other genomic, biological, chemical, and hydrological tests to establish viable modes for endocrine disruption and identify compounds responsible for the observed effects.

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confidence: 99%

Modulation of steroidogenesis by coastal waters and sewage effluents of Hong Kong, China, using the H295R assay

Gracia

Jones

Higley

et al. 2008

Environ Sci Pollut Res

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“…2004), identification of environmental predictors of disease in wildlife populations (Miller et al . 2002), risk assessments (Hung et al . 2004, 2007), and modeling the spread and impact of disease (Norman 2008).…”

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confidence: 99%

“…The use of geographic information systems (GISs) and spatial statistical analyses is needed to fully explore time-space clustering of disease and mortality events precisely (Ward and Carpenter 2000a). GIS and spatial epidemiological analyses have been used in several applications in marine mammal disease research, including mapping of strandings to demonstrate disease and mortality events (Dietz et al 1989, Harris andGupta 2006), surveillance and monitoring of diseases (Jores et al 2008), disease cluster detection (Miller et al 2004), identification of environmental predictors of disease in wildlife populations (Miller et al 2002), risk assessments (Hung et al 2004(Hung et al , 2007, and modeling the spread and impact of disease (Norman 2008).…”

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confidence: 99%

The application of GIS and spatiotemporal analyses to investigations of unusual marine mammal strandings and mortality events

Norman

Huggins

Carpenter

et al. 2011

Marine Mammal Science

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In 2006–2007, an unusually high number of harbor porpoises (Phocoena phocoena) stranded along the Washington and Oregon coastlines. Spatiotemporal analyses were used to examine their ability to detect clusters of porpoise strandings during an unusual mortality event (UME) in the Pacific Northwest using stranding location data. Strandings were evaluated as two separate populations, outer coast and inland waters. The presence of global clustering was evaluated using the Knox spatiotemporal test, and the presence of local clusters was investigated using a spatiotemporal scan statistic (space–time permutation). There was evidence of global clustering, but no local clustering, supporting the hypothesis that strandings were due to more varied etiologies instead of localized causes. Further analyses at subregional levels, and concurrently assessing environmental factors, might reveal additional geographic distribution patterns. This article describes the spatial analytical tools applied in this study and how they can help elucidate the spatiotemporal epidemiology of other UMEs and assist in determining their causes. More than one spatial analytical technique should be used if the study objective is to detect and describe clustering in time and space and to generate hypotheses regarding causation of marine mammal disease and stranding events.

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“…The respondents expressed that wastewater discharged in the upstream rivers was the main source of marine pollution. Researchers also indicated that the Chinese white dolphins in the waters of Hong Kong were severely influenced by the heavy metals and halogenated contaminants [ 37 – 40 ]. However, these external threats are hard to mitigate even if an MPA is established, since the managing authority of MPA has no jurisdiction over the pollution behavior outside its boundary.…”

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confidence: 99%

Conservation of the Eastern Taiwan Strait Chinese White Dolphin (Sousa chinensis): Fishers' Perspectives and Management Implications

et al. 2016

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The abundance of the eastern Taiwan Strait (ETS) population of the Chinese white dolphin (Sousa chinensis) has been estimated to be less than 100 individuals. It is categorized as critically endangered in the IUCN Red List of Threatened Species. Thus, immediate measures of conservation should be taken to protect it from extinction. Currently, the Taiwanese government plans to designate its habitat as a Major Wildlife Habitat (MWH), a type of marine protected area (MPA) for conservation of wildlife species. Although the designation allows continuing the current exploitation, however, it may cause conflicts among multiple stakeholders with competing interests. The study is to explore the attitude and opinions among the stakeholders in order to better manage the MPA. This study employs a semi-structured interview and a questionnaire survey of local fishers. Results from interviews indicated that the subsistence of fishers remains a major problem. It was found that stakeholders have different perceptions of the fishers’ attitude towards conservation and also thought that the fishery-related law enforcement could be difficult. Quantitative survey showed that fishers are generally positive towards the conservation of the Chinese white dolphin but are less willing to participate in the planning process. Most fishers considered temporary fishing closure as feasible for conservation. The results of this study provide recommendations for future efforts towards the goal of better conservation for this endangered species.

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Risk assessment of trace elements in the stomach contents of Indo-Pacific Humpback Dolphins and Finless Porpoises in Hong Kong waters

Cited by 42 publications

References 11 publications

Modulation of steroidogenesis by coastal waters and sewage effluents of Hong Kong, China, using the H295R assay

Modulation of steroidogenesis by coastal waters and sewage effluents of Hong Kong, China, using the H295R assay

The application of GIS and spatiotemporal analyses to investigations of unusual marine mammal strandings and mortality events

Conservation of the Eastern Taiwan Strait Chinese White Dolphin (Sousa chinensis): Fishers' Perspectives and Management Implications

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