[40] It measures up to three meters in length and weighs about 125 kilos. The body color varies with age. [8], In the Pacaya-Samiria National Reserve, Peru, photo-identification is used to recognize individuals based on pigmentation patterns, scars and abnormalities in the beak. Several hundred were captured between the 1950s and 1970s, and were distributed in dolphinariums throughout the US, Europe, and Japan. [34] The data do not fully represent the actual overall number of deaths of the Amazon river dolphins, whether accidental or intentional, because a variety of factors make it extremely complicated to record and medically examine all the carcasses. The amazon pink river dolphins or botos are born grey and become pinker with age. A recent study has shown, despite the claim of the seller and the belief of the buyers, none of these fetishes is derived from the boto. In some food-rich areas or at the mouths of the rivers they can be found in larger groups, but it’s less common. [21], The Amazon river dolphin are commonly seen singly or in twos, but may also occur in pods that rarely contain more than eight individuals. As the Amazon is fed by large stretches of rain forrest, every year it floods its banks for extended periods of time. Muitos exemplos de traduções com "pink river dolphin" – Dicionário português-inglês e busca em milhões de traduções. It is believed that the difference in color depends on the temperature, water transparency, and geographical location. No need to register, buy now! The baby dolphin, or calf, stays with Mom until it learns how to be a grownup. “So this is about 140 kilometers upriver, on the main stem of the Amazon in a side tributary. [8], Breeding is seasonal, and births occur between May and June. [8], The relatively long duration of breastfeeding and parenting suggests a strong mother-child bond. [6], They are also distributed in the basin of the Orinoco River, except the Caroni River and the upper Caura River in Venezuela. So, what actually is a Pink Dolphin? The Colombian Amazon is the area you should head to see the pink dolphins in nature. Aqui a tradução inglês-alemão do Dicionário Online PONS para pink river dolphin! Here are some facts about the Amazon River Dolphin. [37], In addition to attracting predators such as the Amazon river dolphin, these high-water occurrences are an ideal location to draw in the local fisheries. [4][6] The diet is more diverse during the wet season, when fish are spread in flooded areas outside riverbeds, thus becoming more difficult to catch. [19], Life expectancy of the Amazon river dolphin in the wild is unknown, but in captivity, the longevity of healthy individuals has been recorded at between 10 and 30 years. Sexual dimorphism is very evident, with males measuring 16% longer and weighing 55% more than females. This subspecies is not recognized by the Committee on Taxonomy of the Society for Marine Mammalogy,[10] but is recognized by the IUCN. Fact #2: The Amazon pink river dolphin has the largest bodies and brains of any freshwater dolphin. Dentition is heterodont, meaning that the teeth differ in shape and length, with differing functions for both grabbing and crushing prey. However, they are predominantly crepuscular. Associated with these legends is the use of various fetishes, such as dried eyeballs and genitalia. See more ideas about river dolphin, pink river dolphin, pink river. There are over 80 species of cetaceans, a group made up of whales, dolphins and porpoises. The maximum range of motion was 220 kilometres (140 mi), with an average of 60.8 kilometres (37.8 mi). When excited, they will flush to a bright pink … Learn more about whales and dolphins and what we can do to protect them. In traditional Amazon River folklore, at night, an Amazon river dolphin becomes a handsome young man who seduces girls, impregnates them, and then returns to the river in the morning to become a dolphin again. The distribution of dolphins in the rivers and surrounding areas depends on the time of year; in the dry season they are located in the river beds, but in the rainy season, when the rivers overflow, they disperse to the flooded areas, both the forests and the plains. Despite living in small groups, they’re still incredibly curious and … In 2008, the International Whaling Commission (IWC) expressed concern for captured botos for use as bait in the Central Amazon, which is an emerging problem that has spread on a large scale. [42][43] The negative reactions of the local fishermen are also attributed to the Brazilian Institute of Environment and Renewable Natural Resources prohibition on killing the Amazon river dolphin, yet not compensating the fishermen for the damage done to their equipment and catch. They all start off grey and as they get older some turn pink and some stay grey. There is high demand for catfish because it is sold at a high price in Brazil. Sometimes, they associate with the distantly-related tucuxi (Sotalia fluviatilis), and giant otters (Pteronura brasiliensis) to hunt in a coordinated manner, by gathering and attacking fish stocks at the same time. During the dry season, dolphins occupy the main river channels, and during the rainy season, they can move easily to smaller tributaries, to the forest, and to floodplains. Myths say that whoever kills the amazon dolphin will have bad luck, but it's worse for whoever eats it. The boundaries are set by waterfalls, such as the Xingu and Tapajós rivers in Brazil, as well as very shallow water. Males tend to be pinker than females due to more frequent trauma from intra-species aggression. WWF offices in Bolivia, Brazil, and Colombia coordinated a tri-national effort to tag and study river dolphins, applying satellite GPS technology to the task for the first time. Up to 9 feet long and weighing up to 300 pounds, pink river dolphins are the largest freshwater dolphins in the world. Three subspecies are currently recognized: I. g. geoffrensis (Amazon river dolphin), I. g. boliviensis (Bolivian river dolphin) and I. g. humboldtiana (Orinoco river dolphin) while position of Araguaian river dolphin (I. araguaiaensis) within the clade is still unclear. This dolphin has been very famous due to its pink color and usually people doubt the existence of a pink colored dolphin. Leticia is one of the more significant settlements there; they even had a pink river dolphin statue! The dorsal fin, although short in height, is regarded as long, and the pectoral fins are also large. In this coming-of-age introduction to these river mammals, readers will see how a pink river dolphin calf is cared for by its mother, how it spends its day, and how it uses sound to find food in the dark and murky water. The Amazon river dolphin, pink dolphin or Boto is a freshwater dolphin. The Amazon river dolphin is the largest species of river dolphin, with adult males reaching 185 kilograms (408 lb) in weight, and 2.5 metres (8.2 ft) in length. Amazon Pink River Dolphin Interesting Facts . It has very evident sexual dimorphism, with males measuring and weighing between 16% and 55% more than females, making it unique among cetaceans, where females are generally larger than males. The Amazon river dolphin (Inia geoffrensis), also known as the boto, bufeo or pink river dolphin, is a species of toothed whale classified in the family Iniidae. Breathing takes place every 30 to 110 seconds. These dolphins begin life as a gray color and slowly turn pink as they age. They can be anywhere from predominantly gray with a few pink spots, to nearly as pink as a flamingo. The biggest threats are deforestation and other human activities that contribute to disrupt and alter their environment. At birth, calves are 80 centimetres (31 in) long and in captivity have registered a growth of 0.21 metres (0.69 ft) per year. [44], During the process of catching the commercialized fish, the Amazon river dolphins get caught in the nets and exhaust themselves until they die, or the local fishermen deliberately kill the entangled dolphins. WWF works to protect river dolphin habitat in the Amazon region and continues to support river dolphin surveys to help determine their status and vulnerability. It is very curious and has a remarkable lack of fear of foreign objects. Three subspecies are currently recognized: I. g. geoffrensis (Amazon river dolphin), I. g. boliviensis (Bolivian river dolphin) and I. g. humboldtiana (Orinoco river dolphin) while position of Araguaian river dolphin (I. araguaiaensis) within the clade is still unclear. The dolphin's dentition allows it to access shells of river turtles and freshwater crabs. See more ideas about river dolphin, pink river dolphin, pink river. [32][33] One of these ecosystems is a floodplain, or a várzea forest, and is home to a large number of fish species which are an essential resource for human consumption. In inland cities far from the coast, many, if not most, of the fetishes are derived from domestic animals such as sheep and pigs. The skull of the species is slightly asymmetrical compared to the other toothed whales. Additionally, another study was conducted in the Amazon at the height of the mouth of the Caqueta River for six days. Here are some facts about the Amazon River Dolphin. Despite living in small groups, they’re still incredibly curious and … Interestingly, while the dolphin is named after its pink color, actually when it is young it is gray. However, in the dry season, there is no such separation. [10], However, based on skull morphology in 1994, it was proposed that I. g. boliviensis was a different species. The diet becomes more selective during the dry season when prey density is greater. Pink River Dolphins have stiff hairs along their beaks, unlike other dolphin species, which is helpful in searching for prey along the muddy river bottoms. [53], Amazon river dolphin skull (Inia geoffrensis), International Union for Conservation of Nature, Brazilian Institute of Environment and Renewable Natural Resources, Convention on International Trade in Endangered Species Fauna and Flora, Convention on the Conservation of Migratory Species of Wild Animals, 10.2305/IUCN.UK.2018-2.RLTS.T10831A50358152.en, "A New Species of River Dolphin from Brazil or: How Little Do We Know Our Biodiversity", "List of Marine Mammal Species & Subspecies", "Inia geoffrensis (Amazon River Dolphin, Boto, Boutu, Pink River Dolphin)", "List of Marine Mammal Species and Subspecies - Society for Marine Mammalogy", "First report of major histocompatibility complex class II loci from the Amazon pink river dolphin (genus, "Molecular identification of evolutionarily significant units in the Amazon River dolphin, "Sexual dimorphism and body scarring in the boto (Amazon River dolphin), "Ecological factors influencing group sizes of river dolphins (Inia geoffrensis and Sotalia fluviatilis)", "Object carrying as social–sexual display in an aquatic mammal", "Amazon river dolphins (Inia geoffrensis) use a high-frequency short-range biosonar", "Photo-Identification - A Reliable and Noninvasive Tool for Studying Pink River Dolphins, Inia geoffrensis", "Fish and aquatic habitat conservation in South America: A continental overview with an emphasis on Neotropical systems", "Report on the working group on major threats and conservation", "Conflicts between river dolphins (Cetacea:Odontoceti) and fisheries in the Central Amazon: A path toward tragedy? [31], The Amazon river dolphin has historically been kept in dolphinariums. It has a long, thin snout, with 25 to 28 pairs of long and slender teeth to each side of both jaws. An Amazon River Dolphin is also often referred to as a Pink River Dolphin, a Boto or a Bufeo. A full-grown dolphin can grow up to 9 feet (2.7 meters) long, weight up … While preying in murky water, they emit series of clicking noises, 30 to 80 per second, which they use by listening to the bouncing sonar which bounces off their prey. This is because, as the dolphin grows older, its skin becomes more translucent allowing the blood to show through. 1. Most couples observed in their natural environment consist of a female and her calf. It is found throughout much of the Amazon and Orinoco river basins in Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela. The mercury reaches dolphins through the food chain. Taking a trip to see pink river dolphins is a must for anyone who loves Amazon wildlife. The International Union for the Conservation of Nature lists the pink river dolphin as vulnerable to extinction, mostly due to habitat loss. Pink river dolphin definition is - boto. Despite many protections including a moratorium on whaling since 1986, many species of cetaceans continue to be threatened – with some on the verge of extinction. The species is listed in Appendix II of the Convention on International Trade in Endangered Species Fauna and Flora (CITES), and Appendix II of the Convention on the Conservation of Migratory Species of Wild Animals,[47] because it has an unfavorable conservation status or would benefit significantly from international co-operation organized by tailored agreements. The only connection between the Orinoco and the Amazon is through the Casiquiare canal. 1250 24th Street, N.W. These Amazon River Dolphins aren’t all pink (but most of them are) So, despite being called the pink river dolphin, not all of them are pink. Acoustic analysis revealed that the vocalisations are different in structure from the typical whistles of other species of dolphins. This water mammal is the largest of all the other river dolphin species, and cannot survive in salt water. Facebook gives people the power to share and makes the world more open and connected. View our inclusive approach to conservation. The species Inia geoffrensis was described by Henri Marie Ducrotay de Blainville in 1817. Understanding the threats that impact them and protecting them ensures the preservation of their unique habitat. Originally, the Amazon river dolphin belonged to the superfamily Platanistoidea, which constituted all river dolphins, making them a paraphyletic group. The Amazon river dolphin, also known as the pink river dolphin or boto, lives only in freshwater. Make a symbolic animal adoption to help save some of the world's most endangered animals from extinction and support WWF's conservation efforts. They have a long powerful beak, small eyes and are slow swimmers. How to use pink river dolphin in a sentence. The Pink dolphins in Peru live in the Amazon River basin. They have one of the widest ranging diets among toothed whales, and feed on up to 53 different species of fish, such as croakers, catfish, tetras and piranhas. The intervals between sightings ranged from one day to 7.5 years. There is significant segregation during the rainy season, with males occupying the river channels, while females and their offspring are located in flooded areas. This suggests fierce competition for access to females, with a polygynous mating system, though polyandry and promiscuity cannot be excluded. Gestation is estimated to be around eleven months and captive births take 4 to 5 hours. They consume about 5.5% of their body weight per day. They are also commonly found in the streams and main rivers of the Orinoco river systems; the upper Madeira river in South America and Pearl river of Hong Kong. The Amazon River Dolphin is a freshwater dolphin. Amazon River Dolphin The Amazon river dolphin (Inia geoffrensis) goes by various names.In English, it’s often called the pink river dolphin due to its pinkish coloration, although some are shades of gray. As the Amazon is fed by large stretches of rain forrest, every year it floods its banks for extended periods of time. It inhabits South America, mainly in the Amazon river, but also in the Orinoco basin and Madeira river.. [6], Studies to estimate the population are difficult to analyze due to the difference in the methodology used. Their color is variable: young people have a blackish gray back and a somewhat lighter belly, while adults have a pink coloration. River dolphins have a torpedo shaped body with a flexible neck, limbs modified into flippers, non-existent external ear flaps, a tail fin, and a small bulbous head. [34] More importantly, the local fishermen do not report these deaths out of fear that a legal course of action will be taken against them,[34] as the Amazon river dolphin and other cetaceans are protected under a Brazilian federal law prohibiting any takes, harassments, and kills of the species.[46]. It consists of at least 53 different species of fish, grouped in 19 families. Around 100 went to US dolphinariums, and of that, only 20 survived; the last died at the Pittsburgh Zoo in 2002. [8], The diet of the Amazon river dolphin is the most diverse of the toothed whales. Yes, the pink river dolphin is classified as an endangered species by the International Union for Conservation of Nature (IUCN) and there’s evidence of population decline. The myth has been suggested to have arisen partly because dolphin genitalia bear a resemblance to those of humans. A mother pink river dolphin gives birth to its baby in the water. Mercury pollution from small-scale gold mining activities are one of the main threats to the Bolivian river dolphin, a subspecies of the Amazon river dolphin. Pink dolphins, also popularly known as Boto, Bouto or Amazon river dolphin are a type of dolphin species living in the Amazon rainforest with bodies well adapted to the Amazon river. Amazon pink river dolphins live in freshwater areas including lakes, enormous rivers and small tributaries. In another study, on a stretch of 120 kilometres (75 mi) at the confluence of Colombia, Brazil and Peru, 345 individuals with a density of 4.8 per square km in the tributaries around the islands. Many translated example sentences containing "pink river dolphin" – Portuguese-English dictionary and search engine for Portuguese translations. At the Ver-O-Peso market in Belém, you can find bottled genitals of the Amazon river dolphin. [6], They are slow swimmers; they commonly travel at speeds of 1.5 to 3.2 kilometres per hour (0.93 to 1.99 mph) but have been recorded to swim at speeds up to 14 to 22 kilometres per hour (8.7 to 13.7 mph). However, it is classified as vulnerable in certain areas due to dams that fragment and threaten certain populations, and from other threats such as contamination of rivers and lakes. However, three of the reviewed 160 animals were observed over 100 kilometres (62 mi) from where they were first registered. They are only found in the water of the Amazon River, the Orinoco River and the Araguaia River. In the Brazilian and Colombian Amazon, river dolphins are often deliberately killed for use as bait in the “mota” catfish fishery, which gathers fish that demand high prices in the city. In studies conducted during the rainy season, the density observed in the flood plain was 18 animals per square km, while on the banks of rivers and lakes ranged from 1.8 to 5.8 individuals per square km. Pink dolphin: fun facts. Pink River Dolphin in Iquitos Amazon 02 Days / 01 Nights. They all have female-biased sexual dimorphism, with the females being larger than the males. As the water level begins to decrease, the density of food sources in flooded areas increases due to loss of space, providing enough energy for infants to meet the high demands required for growth. See more ideas about Dolphins, River dolphin, Pink river dolphin. This, in conjunction with large pectoral fins, gives them very good maneuverability to swim through the flooded forest searching for their prey. The wildlife in the Amazon region of Ecuador is amazing, but one of the most exciting possibilities of a visit to the Amazon Rainforest is the chance to spot the Amazon Rainforest pink dolphin. Adults acquire a pink color, more prominent in males, giving it its nickname "pink river dolphin". It is a relatively abundant freshwater cetacean with an estimated population in the tens of thousands. In addition, a 2014 study identifies a third species in the Araguaia-Tocantins basin,[15] but this designation is not recognized by any international organization and the Committee on Taxonomy of the Society for Marine Mammalogy suggests this analysis is not persuasive.[10]. It is considered an aphrodisiac potion, but if I were you, I would find better ways to increase your sexual appetite. This aquatic creature may only be found in freshwater environments, and it is different from the mari… The pink river dolphin is often seen alone or in small groups of 2-4 individuals. It is sometimes known simply as boto. Amazon Pink River Dolphin Interesting Facts . River dolphins are rapidly disappearing and so are their natural river habitats. The dolphin develops its pink color as it grows older. A series of recommendations were issued to ensure proper follow-up to the species, among which is the implementation and publication of studies on the structure of populations, making a record of the distribution of the species, information about potential threats as the magnitude of fishing operations and location of pipelines. Before determining that the species had an evident sexual dimorphism, it was postulated that the river dolphins were monogamous. The pectoral fins are large and paddle-shaped. It has also been observed that captive dolphins share food. The International Union for the Conservation of Nature lists the pink river dolphin as vulnerable to extinction, mostly due to habitat loss. The Pink River Dolphin usually lives in a pod, or group, of 2-4 animals. Human fishing activities directly compete with the dolphins for the same fish species, the tambaqui (Colossoma macropomum) and the pirapitinga (Piaractus brachypomus), resulting in deliberate or unintentional catches of the Amazon river dolphin. [1], Increasing pollution and gradual destruction of the Amazon rainforest add to the vulnerability of the species. Obtenha fotos jornalísticas preminum de alta resolução em Getty Images They are only found in the water of the Amazon River, the Orinoco River and the Araguaia River. [16] Research in 2011 concluded that photo-identification by skilled operatives using high-quality digital equipment could be a useful tool in monitoring population size, movements and social patterns. There are five species of dolphins that make their homes in rivers, being the most popular of them the Pink Dolphins also known as Boto, Boutu or Amazon River dolphins as it inhabits the Amazon River. 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