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Pearl River Dolphins

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Many translated example sentences containing "Chinese river dolphin" – German-English the Mainland Chinese economy especially the Pearl River Delta. Many translated example sentences containing "pink river dolphin" fast killing off the rare Chinese white dolphins, which here in the Pearl River delta are pale. Bild von Postal Authority Site, Guangzhou: Dolphins on the Pearl River waterfront near the PA Site. - Schauen Sie sich 47' authentische Fotos und Videos. - Chinese White Dolphin | Chinese white dolphins died in Pearl River estuary last year - China. dolphin (Sousa chinensis): China is home to the world's largest population of these dolphins, with over 2, living at the mouth of the Pearl River. They are.

Pearl River Dolphins

Rescuers managed to save it from the river and sent it to the Pearl River Estuary China White Dolphin National Nature Reserve in Zhuhai. Bild von Postal Authority Site, Guangzhou: Dolphins on the Pearl River waterfront near the PA Site. - Schauen Sie sich 47' authentische Fotos und Videos. Alle wichtigen Informationen zu den Zimmer des Sanya Pearl River Garden Hotel auf Tripadvisor. Der Dolphin Bar, die nur ca. m entfernt, ist ein Ort für. Pearl River Dolphins Zimmertipp: Dont stay in the third level seaview rooms. Med Abrechnung Mein e. Wir hatten einen wunderbaren Muttertag Kreuzfahrt. Stock eines Gebäudes innerhalb von m Novoline Fruits On Fire die Ecke. Rtl Spielede Tour kann wegen schlechten Wetters unterbrochen werden. Schicken Casino Friedberg es uns. Eine beeindruckende Anzahl von 96 Prozent der Reisen wurde erfolgreich gesichtet.

Barros, N. Aquatic Mammals 30 1 Chen, B. Distribution and conservation of the Indo—Pacific humpback dolphin in China. Integrative Zoology 4, — Chen, T.

Mammalia 74, Mammalian Biology — ZeitschriftfürSäugetierkunde 76, Gui, D. Bioaccumulation and biomagnification of persistent organic pollutants in Indo-Pacific humpback dolphins Sousa chinensis from the Pearl River Estuary, China.

Chemosphere , Tissue distribution and fate of persistent organic pollutants in Indo-Pacific humpback dolphins from the Pearl River Estuary, China.

Huang, S. Indo-Pacific humpback dolphins: A demographic perspective of a threatened species. Karczmarski , pp. Demography and population trends of the largest population of Indo-Pacific humpback dolphins.

Biological Conservation , Map of Guangzhou fishery three boats found dolphins, dolphin dynamic close-up.

This pure white dolphin, in the southwest corner of the intersection of two Datansha waterway central broad waters at cruising.

Bei Ruby. Humpback Dolphins in Hong Kong and the Pearl. Author information: 1 The. The dolphins appeared just as the wind was picking up and spent minutes playing in our bow wave and in the bow waves of several of our competitors close by.

Dolphins are well known to enjoy swimming alongside yachts — particularly sailing boats. Keywords: Baiji , critically , endangered , animals , Chinese, river , dolphin , Yangtze , whitefin.

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No need to register, buy now! Common minke whale B. Humpback whale M. Gray whale E. Pygmy right whale C. Parvorder Odontoceti Toothed whales cont.

Commerson's dolphin C. Long-beaked common dolphin D. Pygmy killer whale F. Short-finned pilot whale G. Risso's dolphin G. Fraser's dolphin L.

Atlantic white-sided dolphin L. Northern right whale dolphin L. Irrawaddy dolphin O. Killer whale O. Melon-headed whale P.

False killer whale P. Tucuxi S. Indo-Pacific humpback dolphin S. Pantropical spotted dolphin S. Rough-toothed dolphin S. Indo-Pacific bottlenose dolphin T.

Beluga D. Narwhal M. Finless porpoise N. Spectacled porpoise P. Dall's porpoise P. Sperm whale P. Pygmy sperm whale K. Amazon river dolphin I. Baiji L.

South Asian river dolphin P. La Plata dolphin P. Arnoux's beaked whale B. Northern bottlenose whale H. Tropical bottlenose whale I.

Sowerby's beaked whale M. Shepherd's beaked whale T. Cuvier's beaked whale Z. Hidden categories: CS1 maint: uses authors parameter Cite iucn errors Webarchive template wayback links Use dmy dates from August Articles needing additional references from August All articles needing additional references Articles with 'species' microformats Articles containing traditional Chinese-language text All articles with unsourced statements Articles with unsourced statements from September Articles with limited geographic scope from November Commons category link is on Wikidata.

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At the theme aquarium in Pattaya , Thailand. Sousa chinensis Osbeck , Combined ranges of Sousa chinensis and Sousa sahulensis. Wikispecies has information related to Sousa chinensis chinensis.

Wikimedia Commons has media related to Sousa chinensis. Balaenoptera Common minke whale B. Eschrichtius Gray whale E.

Caperea Pygmy right whale C. Monodontidae Delphinapterus Beluga D. Phocoenidae Neophocaena Finless porpoise N.

Physeter Sperm whale P. Kogiidae Kogia Pygmy sperm whale K. Iniidae Inia Amazon river dolphin I. Lipotidae Lipotes Baiji L. Platanistidae Platanista South Asian river dolphin P.

Pontoporiidae Pontoporia La Plata dolphin P.

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The Chinese white dolphins, named so because of their unique white color, can be found in the waters of Southern China.

Sadly, nowadays the more common place to spot the dolphins is inside an aquarium. The threats facing the Chinese white dolphins include overfishing, water pollution, heavy marine trafficking, and coastal development.

Adding to this lengthy list is the potential construction of a third runway at Hong Kong International Airport. He emphasized that if the construction takes place, dolphins could become so stressed and confused by the noise in the estuary that they would stop swimming away from noise sources, leading some observers to incorrectly assume that they were unbothered.

Nevertheless, there are still several unresolved issues in differentiation of the Indian Ocean-type and Indo-Pacific-type humpback dolphins.

An adult Indo-Pacific humpback dolphin is grey, white or pink and may appear as an albino dolphin to some. Uniquely, the population along the Chinese coast has pink skin, [4] and the pink colour originates not from a pigment , but from blood vessels which were overdeveloped for thermoregulation.

The body length is 2 to 3. Indo-Pacific humpback dolphins live up to 40 years, as determined by the analysis of their teeth.

At birth, the dolphins are black. They change to grey, then pinkish with spots when young. Adults are grey, white or pink. Indo-Pacific humpback dolphins come to the water surface to breathe for 20 to 30 seconds before diving deep again, for two to eight minutes.

Dolphin calves, with smaller lung capacities, surface twice as often as adults, staying underwater for one to three minutes.

Adult dolphins rarely stay under water for more than four minutes. They sometimes leap completely out of the water.

They may also rise up vertically from the water, exposing the dorsal half of their bodies. A pair of protruding eyes allows them to see clearly in both air and water.

Indo-Pacific humpback dolphins are sociable creatures and live in groups of three to four. Female dolphins become mature at 10 years old, while the males become mature at 13 years old.

They usually mate from the end of summer to autumn. Infant dolphins are usually born 11 months after the mating.

Mature females can give birth every three years, and parental care lasts until their offspring can find food themselves.

The Indo-Pacific humpback dolphin is threatened by both habitat loss and pollution. Conservationists warn that Hong Kong may lose its rare Indo-Pacific humpback dolphins, also known as pink dolphins for their unique colour, unless China takes urgent action against pollution and other threats.

Their numbers in Hong Kong waters have fallen from an estimated in to just 78 in , with a further decline expected by the Hong Kong Dolphin Conservation Society.

A tour guide from Hong Kong Dolphinwatch spotted a group of pink dolphins helping a mother support the body of her dead calf above the water in an attempt to revive it.

The scene, captured on video and widely shared on Facebook , has raised fresh concerns about the dwindling population in a city where dolphin watching is a tourist attraction.

Fewer than 2, of the mammals survive in the Pearl River Delta , the body of water between Macau and Hong Kong, with the majority found in Chinese waters and the rest in Hong Kong.

The subject of plastic pollution is a global phenomenon that has no end in sight. Plastic pollution is widespread across all entangling oceans due to their buoyant and durable properties that allow for sorption of toxicants to plastic while traveling through the environment.

There are many transit paths that allow for plastics and pollutions to enter oceans. Freshwater waste can enter oceans by rivers; delta or estuary where rivers meet the ocean.

Human populations discarding their waste directly into marine waters. Through photo-degradation and other forms of weathering processes that aid in plastics fragmentation and dispersal.

Mass quantities of fragmented plastics - along with pollution are aggregated in subtropical gyres; ocean gyres. Plastic pollution can severely affect all forms of marine life; Indo-Pacific humpback dolphins are specifically affected in an array of means.

Indo-Pacific humpback dolphins Sousa chinensis are chronically exposed to organic pollutants since they inhabit shallow coastal waters that are often impacted by anthropogenic activities.

Anthropogenic pollutants pose a risk to marine mammals that reside in coastal waters. Discharge of organic pollutants into marine environments has been shown to decrease water quality resulting in loss of habitats and a significant reduction in the species richness Johnston and Roberts, The consumption of plastics have adverse effects in marine mammals such as disease susceptibility, reproductive and developmental toxicity.

If the dolphin is not consuming plastic directly then it can have plastic pollutants ingested though biomagnification and bioaccumulation.

Bioaccumulation is defined as the uptake of chemicals from the environment through dietary intake, dermal absorption or respiratory transport in air or water.

This is a huge factor is plastic toxicity consumption in this species due to them having long lifespans which makes them susceptible to chronic exposure.

Also, they contain a large quantity of blubber, lipids , which can result in an excess of toxicity storage in their tissues. Echolocation is a main sense that all dolphins use to navigate and pinpoint prey and predators.

Dolphins and whales use echolocation by bouncing high-pitched clicking sounds off underwater objects , similar to shouting and listening for echoes.

The sounds are made by squeezing air through nasal passages near the blowhole. These sound-waves then pass into the forehead, where a big blob of fat called the melon focuses them into a beam.

This can become confusing and frustrating which can lead to extreme stress and potential health issues. Despite echolocation being mostly affected by noise pollution it can altered by pollutants in marine water.

Noise pollution can also be caused by large clusters of plastic debris; ocean gyre. The constant movement of ocean currents will cause the plastic debris, along with general-waste to clash together which entails a production of sound.

Sound waves from the debris will travel through marine waters which can become an excess of sound waves traveling can render their use of echolocation.

This can inherently leave this species blind since this is their primary sense. In Hong Kong, boat trips to visit the Indo-Pacific humpback dolphins have been running since the s.

A code of conduct regulates dolphin-watching activity in Hong Kong waters. There have been some reports of dolphin watching practices that have further endangered the Indo-Pacific humpback dolphins, such as in Sanniang Bay dolphin sanctuary in Qinzhou [15] [16] and off Xiamen.

The phrase originates from the Cantonese fisher people, because they claim the dolphins eat the fish in their nets. The wu refers to the finless porpoises , which are black, and the bak , white, referring to Chinese river dolphins.

These two species often interrupt and ruin the fishermen's catch. As years passed, because "dolphin" sounds the same as "bad luck", the meaning of the phrase changed.

However, in Cantonese, wu refers to the calves of Chinese white dolphin and bak refers to the adults. The Indo-Pacific humpback dolphins were first discovered along the west coast of Taiwan in Taiwan is a densely populated island and highly developed area, which has many industrial development projects, especially along the west coast, where the ETS populations of Indo-Pacific humpback dolphins live.

Based on data collected between and , the ETS population of humpback dolphins was less than individuals.

It means during those 7 years, population of humpback dolphins is being destroyed constantly and severely. There are several facts that result in the decreasing number of ETS population of humpback dolphins.

First, large-scale modification of the shoreline by industrial development including hydraulic filling for creating industrial or science parks, seawall construction and sand mining cause habitat fragmentation and diminish dolphin's habitats.

In addition, exploitation of shoreline also contributes to toxic contamination flows into dolphin's habitats.

The chemical pollution from industrial or agricultural and municipal discharge results in impaired health of dolphins, for instance, reproductive disorders, and compromised immune system.

Second, fishing activities along the west coast of Taiwan are thriving, and cause many impacts on dolphins. Widespread and intensive use of gillnets and vessel strikes are potential threats for dolphins.

Over exploitation of fish by fisheries' is another threat for the dolphin population. It has led to disturbance of marine food web or trophic level and reduces marine biodiversity.

Therefore, dolphins have not enough prey to live on. Still another problem is reduced amount of freshwater flows into estuaries from rivers.

Since ETS population of humpback dolphins is closely associated with estuaries habitat, the elimination of freshwater discharge from rivers significantly decreases the amount of suitable habitats for dolphins.

Hydroacoustic disturbance is another critical issue for dolphins. Sources of noise can come from dredging , pile driving , increased vessel traffic, seawall construction, and soil improvement.

For all cetaceans, sound is vital for providing information about their environment, communicating with other individuals, and foraging; also, they are very vulnerable and sensitive to the effects of noise.

Elevated anthropogenic sound level causes many dysfunctions of their behaviors, and even leads to death. In addition to threats from anthropogenic activities, dolphins are potentially at the risk due to the small population size, which may result in inbreeding and decreased genetic and demographic variability.

Finally, climate change causes more typhoons to hit the west coast of Taiwan and cause great disturbance to dolphins' habitats. It is listed on Appendix II [28] as it has an unfavourable conservation status or would benefit significantly from international co-operation organised by tailored agreements.

The population continues to be further threatened by pollution, vessel collision, overfishing, and underwater noise pollution. In addition to their natural susceptibility to anthropogenic disturbances, the Chinese white dolphin's late sexual maturity, reduced fecundity, reduced calf survival, and long calving intervals heavily curtails their ability to naturally cope with elevated rates of mortality.

From Wikipedia, the free encyclopedia. Redirected from Chinese White Dolphin. Not to be confused with the Baiji Chinese river dolphin. This article needs additional citations for verification.

Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Conservation status.

The examples and perspective in this Hong Kong may not represent a worldwide view of the subject.

Guangdong Hong Kong Macau. The Indo-Pacific humpback dolphins were first discovered along the west coast Online Roulette System Cheat Taiwan in News items and updates will continue to be posted on the CSG website, Kuaiyong Ios 9.1 these can be found on our News page or at the following links:. Yongning [m]. Conservation status. At birth, the dolphins are black. With assistance from the SSC Conservation Breeding Specialist Group and the Cetacean SG, OPCFHK used the funding to organize and conduct two workshops —one in March-April to develop a population viability analysis and the other in January to produce an initial Mark Lamberg research and management framework to be implemented over the next several years. It has led to disturbance of marine food web or trophic level and reduces marine biodiversity.

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