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There are over 80 species of cetaceans, a group made up of whales, dolphins and porpoises. The pink river dolphin is often seen alone or in small groups of 2-4 individuals. The mythology is said to be the cycle of a baby. They are only found in the water of the Amazon River, the Orinoco River and the Araguaia River. [40] Among all the dolphins in the world, the pink river dolphins is very unique not only in appearances but also in other physical characteristics. Lactation takes about a year. A series of rapids and waterfalls in the Madeira River have isolated one population, recognized as the subspecies I. g. boliviensis, in the southern part of the Amazon basin in Bolivia. Density was estimated at 0.08- 0.33 animals per square kilometer in the main channels, and 0.49 to 0.93 animals per square kilometer in the branches. Also called the boto, the Amazon river dolphin sometimes comes in pink—at least the males do. There is significant segregation during the rainy season, with males occupying the river channels, while females and their offspring are located in flooded areas. The behavior is "triggered by an unusually large number of adult males and/or adult females in a group, or perhaps it attracts such into the group. It is sometimes known simply as boto. The issuance of these sounds is related to the time they return to the surface before diving, suggesting a link to food. [19], Usually, these dolphins are active and feeding throughout the day and night. The only connection between the Orinoco and the Amazon is through the Casiquiare canal. [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]. [8], Breeding is seasonal, and births occur between May and June. In the Orinoco, the largest observed groups number 30, but average is just above five. Inia geoffrensis geoffrensis[6] inhabits most of the Amazon River, including rivers Tocantins, Araguaia, low Xingu and Tapajos, the Madeira to the rapids of Porto Velho, and rivers Purus, Yurua, Ica, Caqueta, Branco, and the Rio Negro through the channel of Casiquiare to San Fernando de Atabapo in the Orinoco river, including its tributary: the Guaviare. [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). River dolphin skulls have small eye orbits, a long snout and eyes placed on the sides of the head. Despite small eyes, the species seems to have good eyesight in and out of the water. 2.7 and 2.0 were observed along the banks. [52] Local legends also state that the dolphin is the guardian of the Amazonian manatee, and that if one should wish to find a manatee, one must first make peace with the dolphin. 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. A plausible explanation of the results is that object-carrying is aimed at females and is stimulated by the number of females in the group, while aggression is aimed at other adult males and is stimulated by object-carrying in the group. See Pink River Dolphins in the Wild. Pink Amazon River Dolphin Facts. Some of the best places to see them are Iquitos, the Pacaya-Samiria Reserve, and the Upper Amazon River (for example, near Santa Rosa). ", "Bolivia enacts law to protect Amazon pink dolphins", "Myths And Legends of the Amazon's Pink River Dolphin", Convention on Migratory Species page on the Amazon Dolphin, https://en.wikipedia.org/w/index.php?title=Amazon_river_dolphin&oldid=992948291, Taxa named by Henri Marie Ducrotay de Blainville, Articles lacking reliable references from June 2017, Srpskohrvatski / српскохрватски, Creative Commons Attribution-ShareAlike License, This page was last edited on 7 December 2020, at 23:58. Donations are tax-deductible as allowed by law. [38][39][40][32][41][42][43][44] The local fishermen overfish and when the Amazon River dolphins remove the commercial catch from the nets and lines, it causes damages to the equipment and the capture, as well as generating ill will from the local fishermen. They are derived from Sotalia guianensis, are most likely harvested along the coast and the Amazon River delta, and then are traded up the Amazon River. Males often have a significant degree of damage in the dorsal, caudal, and pectoral fins, as well as the blowhole, due to bites and abrasions. It has also been observed that captive dolphins share food. The Amazon river dolphin, pink dolphin or Boto is a freshwater dolphin. Amazon Pink River Dolphin – Boto – Inia geoffrensis Their cervical vertebrae are not fused, allowing the head to turn 90 degrees to each side . This suggests that long periods of parental care contribute to learning and development of the young. Yangtze River Dolphin Facts Firstly, on most lists, the remarkable Yangtze River Dolphin ranks now as the rarest known creature in the world. Sometimes they can swim alone. It is a relatively abundant freshwater cetacean with an estimated population in the tens of thousands. In more detail, Manaus and the Upper Amazon River (for example Tabatinga) are great locations. The boundaries are set by waterfalls, such as the Xingu and Tapajós rivers in Brazil, as well as very shallow water. Additionally, another study was conducted in the Amazon at the height of the mouth of the Caqueta River for six days. 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. “So this is about 140 kilometers upriver, on the main stem of the Amazon in a side tributary. [23] Typically, social bonds occur between mother and child, but may also been seen in heterogeneous groups or bachelor groups. Jul 5, 2018 - Explore Diane Stirratt's board "Pink river dolphin" on Pinterest. Foto de Anavilhanas Lodge, Novo Airão: Pink River Dolphin - Confira as 3.169 fotos e vídeos reais dos membros do Tripadvisor de Anavilhanas Lodge It has a long, thin snout, with 25 to 28 pairs of long and slender teeth to each side of both jaws. [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. They can also shake their fins, and pull their tail fin and head above the water to observe the environment. The dolphin develops its pink color as it grows older. It is found throughout much of the Amazon and Orinoco river basins in Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela. [23], Like other dolphins, river dolphins use whistling tones to communicate. Apparently, there is little competition for food between these species, as each prefers different prey. Pink river dolphin definition is - boto. 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