Population sizes of inia were obtained by using the closed petersen markrecapture model on photoidentifications. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader if you would like more information about how to print, save, and work with pdfs, highwire press provides a helpful frequently asked questions about pdfs. Small blood vessels and smooth muscle bundles were. The amazon river dolphin is distributed throughout the amazon and orinoco rivers and their tributaries. Use of boto inia geoffrensis as baite in fisheries in the central amazon vera m. Habitat use by the boto, or amazon river dolphin inia geoffrensis, was investigated in and around the mamiraua reserve, brazil. Bolivian river dolphins were discovered by the western world in 1832 by french researcher alcide dorbigny. Wildscreen s arkive project was launched in 2003 and grew to become the worlds biggest encyclopaedia of life on earth. This is the first time an initiative of this magnitude concerning river dolphins, has been carried out in the americas or the world, and the scientific information will help design a. Flamingos, with their long legs, curving beaks and bright orange color, are the showstoppers of the bird world. Jun 28, 2007 a recent reassessment of the phylogenetic affinities of cetaceans makes it timely to compare their placentation with that of the artiodactyls. The freshwater dolphin inia geoffrensis geoffrensis produces high frequency whistles laura j.
The umbilical cord branched to supply a bilobed allantoic sac. The freshwater dolphin inia geoffrensis geoffrensis produces. The bufeo inia geoffrensis in the rio lagarto cocha of the ecuadorian amazon. An evaluation of the conservation of amazon river dolphins. Morphology of the pectoral girdle in the amazon dolphin inia.
Ginredirect tikang ha inia jump to navigation jump to search. First evaluation of abundance of the three river dolphin. Inia geoffrensis boliviensis dorbigny, 1834 bolivian river dolphin, bolivian bufeo subspecies inia geoffrensis geoffrensis blainville, 1817 amazon river dolphin, common boto. The bolivian river dolphin was briefly thought to be a subspecies as i. Inia geoffrensis vernacular names edit wikidata amazon river dolphin english. Pdf abundance estimate of the amazon river dolphin inia. In the wild, flamingos live in flocks in florida, central and south america, as well as a few places in africa.
The pink river dolphin is the largest cetacean to spend its time in fresh waters. Morphology and ultrastructure of the amazon river dolphin inia. Largely forested with numerous channels and lakes, mamiraua comprises a variety of seasonal floodplain habitats known collectively as varzea. The natural history of inia geoffrensis ava cazabonnet, l02 introduction the inia geoffrensis also known as the amazon river dolphin or pink river dolphin is known to be the largest from the five species of freshwater cetaceans. Pdf river dolphin inia geoffrensis, sotalia fluviatilis mortality. The authors suggest that crowding andlor the overly aggressive behavior of inia kept in groups contributes to the speciespoor longevity record in captivity and that. Small blood vessels and smooth muscle bundles were found within. 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. Inia araguaiaensis entre 48 et 56 inia geoffrensis entre 50 et 58 inia boliviensis entre 62 et 70 dapres t. List of marine mammal species and subspecies, website version aug 2018 acquired.
Distribution and abundance of the river dolphin inia geo. A major threat to river dolphins in brazil is habitat loss and fragmentation as a result of the construction of hydroelectric dams. 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 r. A large dolphin, inia geoffrensis, of the amazon river. We examine the degree of overlap between the distributions of two river dolphin species boto inia geoffrensis and tucuxi sotalia fluviatilis and hydroelectric projects and provide an initial quantification of impacts. Boto, amazon river dolphin, boutu, pink river dolphin, bouto, bolivian river dolphin, orinoco river dolphin. We studied the placentae of two sympatric species of dolphin from the amazon river basin, representing two distinct families. The pink dolphin inia geoffrensis is widely distributed along the amazon and orinoco basins, covering an area of approximately 7 million km 2. Hematologic profile of amazon river dolphins inia geoffrensis and its variation during acute capture stress article pdf available in plos one 1412. Abundance estimate of the amazon river dolphin inia.
Pdf in the western brazilian amazon, interactions of boto inia geoffrensis and tucuxi sotalia fluviatilis dolphins with fishing activities are. 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. Jul 24, 2014 a major threat to river dolphins in brazil is habitat loss and fragmentation as a result of the construction of hydroelectric dams. Studies in brazil on inia geoffrenisis reported 43 different. Compared to its cousin, the amazonian river dolphin inia geoffrensis, the bolivian river dolphin has more teeth, a smaller skull, and a longer body. Biology and conservation of freshwater cetaceans in asia. The digestive tract of inia boliviensis dorbigny, 1834. Population size estimates of pink river dolphins inia.
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. Distribution map of all known species and subspecies of inia. The total population size estimate for rightleft side individuals was 12971 inia dolphins cv0. O genero foi considerado monoespecifico por muitos autores, incluindo apenas o inia geoffrensis. Pdf current situation of the river dolphin inia geoffrensis in. A 1998 classification listed a single species, inia geoffrensis, in the genus inia, with three recognized subspecies. The stomach of the inia consisted of a forestomach, main stomach, connecting channel, and py loric stomach. All about flamingos they have long legs, curving beaks and. 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. Mammal species of the world a taxonomic and geographic reference. The genus inia is currently considered monospecific, with three recognized subspecies. The boto is a bulky mammal but with a body with a very hydrodynamic structure. Toothed whales produce echolocation clicks with source parameters related to body size.
With the help of over 7,000 of the worlds best wildlife filmmakers and photographers, conservationists and scientists, featured multimedia factfiles for more than 16,000 endangered species. A recent reassessment of the phylogenetic affinities of cetaceans makes it timely to compare their placentation with that of the artiodactyls. Amazon river system as an ecological barrier driving genetic. Term paper the natural history of inia geoffrensis ava. Dec 26, 2019 hematologic profile of amazon river dolphins inia geoffrensis and its variation during acute capture stress article pdf available in plos one 1412. Pdf we present results of the first simultaneous visual and acoustic surveys for amazon river dolphins inia geoffrensis and tucuxi sotalia. People love to watch them at zoos and nature preserves. Aug 20, 2017 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 r. Use of boto inia geoffrensis as baite in fisheries in the. Pdf hematologic profile of amazon river dolphins inia.
Additional considerations on the taxonomy of the genus inia. An inia geoffrensis in nahilalakip ha genus nga inia, ngan familia nga iniidae. The boto is a mammal included in the cetacea order, odontoceti suborder and iniidae family. Necropsies have shown the bolivian river dolphin diet includes a variety of different species of fish, as well as crabs. Studies in brazil on inia geoffrenisis reported 43 different species in 19 from ucp 441 at university of central punjab. Molecular identification of evolutionarily significant units. Amazon river dolphins inia geoffrensis journal of experimental. The amazon river dolphins inia geoffrensis, also known as botos, are solitary animals and are rarely seen in groups of more than four.
Previous morphological and genetic studies have proposed the existence of at least two evolutionary significant units. The bolivian river dolphin is a subspecies of inia geoffrensis. Inia geoffrensis in captivity in the united states iucn portals. Feb 05, 2020 plural of inionzoology a south american freshwater dolphin inia boliviensis with a hairy snout. Nevertheless, since 1989 the most widely used and recognized subdivision status of this genus still includes three subspecies. Amazon river dolphin inia geoffrensis facts about animals. This compilation brings together current information on the status of. 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 225 cm and approximately 153 kg for females.
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