Acids in the vomit dissolve the food so the fly can suck it up. River dolphin inia geoffrensis sotalia fluviatilis. Morphology of the pectoral girdle in the amazon dolphin inia geoffrensis with special reference to the shoulder joint and the movements of the flippers. Instead, they have a long tongue called a proboscis, which sucks up food like a straw. 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. The freshwater dolphin inia geoffrensis geoffrensis produces high frequency whistles laura j. Convention on the conservation of appendix i migratory species of wild animals cms effective 26 january 2018 page 1 appendices i and ii of the convention on the conservation of migratory species of wild animals cms as amended by the conference of the parties in 1985, 1988, 1991, 1994, 1997, 1999, 2002, 2005, 2008, 2011, 2014 and 2017. A large dolphin, inia geoffrensis, of the amazon river.
Mammal species of the world a taxonomic and geographic reference. Population size estimates of pink river dolphins inia geoffrensis are critical to assess the conservation status of this species and the impacts of increasing human stressors in freshwater ecosystems. Brazilian amazon river dolphins inia geoffrensis are sitefaithful but show seasonal movements in and out of a study area in accordance with water level changes, i. Inia geoffrensis boliviensis dorbigny, 1834 bolivian river dolphin, bolivian bufeo subspecies inia geoffrensis geoffrensis blainville, 1817 amazon river dolphin, common boto. Baby the amazon river dolphin or pink river dolphin, the last individual of its species and its whole family, iniidae in captivity outside its native range, at duisburg zoo germany. The bufeo inia geoffrensis in the rio lagarto cocha of the ecuadorian amazon. Amazon river dolphins inia geoffrensis use a highfrequency shortrange biosonar. Population size estimates of pink river dolphins inia. Occurrence patterns, habitat associations, and potential prey of the river dolphin, nib geoffrensis, in the cinaruco river, venezuela1 tamara l. Occurrence patterns, habitat associations, and potential. Use of boto inia geoffrensis as baite in fisheries in the central amazon vera m. Pdf abundance estimate of the amazon river dolphin inia. The freshwater dolphin inia geoffrensis geoffrensis.
River dolphin distribution in southern ucayali, peru lat. The freshwater dolphin inia geoffrensis geoffrensis produces high. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. Caldwell marineland of florida, route l, box 122, st. Inia araguaiaensis entre 48 et 56 inia geoffrensis entre 50 et 58 inia boliviensis entre 62 et 70 dapres t. The history of inia geofrensls in the united states covers a period ofthree decades which is characterized by the combined acquisition of as many as 70 animals over the first ten years, an abrupt decline in importation, and a loss of specimens leading to the current captive population of one. Amazon river dolphin inia geoffrensis facts about animals. Amazon river dolphins boto, inia geoffrensis blainville 1817 employ a lowpower, high sampling rate biosonar as a likely adaptation to the often shallow and cluttered waters in which they hunt ladegaard et al. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Pdf microgeographical genetic structure of inia geoffrensis in the. Inia geoffrensis in captivity in the united states melba c. Appendices i and ii of the convention on the conservation. Here, we determine if aggressiveness in conditioned botos inia geoffrensis during interactions with humans under provisioning is influenced by the presence or absence of food rewards and if provisioning leads to the establishment of a dominance hierarchy. However, it is not a legal authority for statutory or regulatory purposes.
Photoidentifications of inia dolphins were collected between february 2007 and august 2009 in two locations of the colombian amazon and orinoco river basins. You also get unlimited file sizes as well as the ability to upload and convert several files to pdf at the same time. Files are available under licenses specified on their description page. The amazon river dolphin comes in all shades of pink, from a dull graypink, to rosy colored pink, to a bright pink like that of the flamingo.
The amazon river dolphin inia geoffrensis, also known as the boto, bufeo or pink. Inia geoffrensis in captivity in the united states iucn portals. All structured data from the file and property namespaces is available under the creative commons cc0 license. All relevant data are within the manuscript and its supporting information files. Seasonal movements of river dolphins inia geoffrensis. The time of divergence corresponds to the time the amazon and araguaiatocantins river basins became separated, implying vicariant speciation. Morphology and ultrastructure of the amazon river dolphin inia. Aggression is often utilised in intraspecific competition to establish and maintain dominance hierarchies in social mammals. The genus inia is currently considered monospecific, with three recognized subspecies. Resource defence and dominance hierarchy in the boto inia geoffrensis during a provisioning program article pdf available in acta ethologica 161 august 2012 with 155 reads. The boto is the largest of the river dolphins with a maximum recorded body length of 255 cm and body mass of 207 kg for males and.
Biology and conservation of freshwater cetaceans in asia. Keywords convergent evolution, geometric morphometrics, inia geoffrensis,lipotes vexillifer pontoporia blainvillei, platanista gangetica, mandible, skull introduction convergent evolution, or convergence, is the independent evolution of similar phenotypes in different lineages losos, 2011, producing taxa that are more similar than expected. Use of boto inia geoffrensis as baite in fisheries in. In the course freshwater ecology in the amazon, we will examine key physical, chemical and biological factors that influence inland waters such as lakes, streams and wetlands. The amazon river dolphin, inia geoffrensis, is classified as endangered by the iucn red list. Abstract the history of inia geofrensls in the united states covers a period ofthree decades which is characterized. Hematologic profile of amazon river dolphins inia geoffrensis and its. This species is most closely related to the amazon river dolphin inia geoffrensis, from which it is believed to have split about 2. Pdf resource defence and dominance hierarchy in the boto.
With a free trial of our online pdf converter, you can convert files to and from pdf for free, or sign up for one of our memberships for limitless access to our file converters full suite of tools. Abundance estimate of the amazon river dolphin inia. A 1998 classification listed a single species, inia geoffrensis, in the genus inia, with three recognized subspecies. The stomach of the bou tu, inia geoffrensis, was examined macroand light microscopically, and was compared with those of the three other species of platanistidae as well as with those of some sea dolphins. This chapter explores the amazon river dolphin commonly known as boto. Pdf we present results of the first simultaneous visual and acoustic surveys for amazon river. Abundance estimate of the amazon river dolphin inia geoffrensis and. Distribution and abundance of the river dolphin inia. An inia geoffrensis in nahilalakip ha genus nga inia, ngan familia nga iniidae.
The amazon river dolphin or boto inia geoffrensis is endemic to the. The pink river dolphin is the largest cetacean to spend its time in fresh waters. Amazon river dolphins inia geoffrensis journal of experimental. Ini nga species ginbahin ha masunod nga subspecies. Distribution and abundance of the river dolphin inia geo. An evaluation of the conservation of amazon river dolphins. Wildscreen s arkive project was launched in 2003 and grew to become the worlds biggest encyclopaedia of life on earth. Overfishing, deforestation, and hydroelectric construction are all major factors in the current population decline. Boto, pink river dolphin the boto is a mammal included in the cetacea order, odontoceti suborder and iniidae family. Most of the scientific community accepted this single species classification, as does the iucn. With the help of over 7,000 of the worlds best wildlife filmmakers and photographers, conservationists and scientists, featured multimedia fact files for more than 16,000 endangered species. The bolivian river dolphin faces a multitude of threats. Inia geoffrensis and are poorly developed in pelagic mysticetes, which implies that sinus enlargement is related more to acoustic isolation than to mechanical stress oelschlager, 1986. This page was last edited on 8 december 2014, at 06.
Morphology of the pectoral girdle in the amazon dolphin. Pdf thirtythree pink river dolphins inia geoffrensis were caught at eight. The amazon river dolphin is distributed throughout the amazon and orinoco rivers and their tributaries. Inia geoffrensis amazon river dolphin dd kogia breviceps pygmy sperm whale dd kogia sima dwarf sperm whale dd lagenorhynchus australis peales dolphin dd lagenorhynchus obscurus dusky dolphin dd lissodelphis peronii southern rightwhale dolphin dd mesoplodon bidens. This compilation brings together current information on the status of asian freshwater cetacean populations, the factors that have caused their recent declines, and what can be done to. Fisheries also pose a threat to the dolphins, for fishermen might see the dolphins as competition for fish. This color variation is due to the clarity of the water in which the dolphin lives. When a fly lands on your lunch, it vomits on the food. Amazon river dolphin inia geoffrensis rainforest alliance. Ginklasipika han iucn an species komo kulang hin datos subspecies.
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