First report of major histocompatibility complex class ii loci from the amazon pink river dolphin genus inia. Pdf stomach content of a juvenile bolivian river dolphin. Inia is the only genus in the family iniidae odontoceti, cetacea, one of four families of river dolphins. Pdf the bolivian river dolphin or bufeo inia boliviensis is one of four species of river dolphins in south america. Eschrichtius robustus society for marine mammalogy. This divergence estimate is broadly compatible with the uplift of the fitzcarrald arch which commenced to isolate the bolivian subbasin from the amazon. The bolivian river dolphin inia boliviensis, a mammal, is a species related to the. Molecular identification of evolutionarily significant. Fmib 34086 inia geoffroyi desmarest gray the inia young specimen. The pink dolphin inia geoffrensis is widely distributed along the amazon and orinoco basins, covering an area of approximately 7 million km 2.
The total population of the species is estimated to be of. It is a woodystemmed, twining tropical vine or sprawling shrub. 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. Conservation of the river dolphin inia boliviensis in bolivia. A 1998 classification listed a single species, inia geoffrensis, in the genus inia, with three recognized subspecies. We report the first major histocompatibility complex mhc dqb1 sequences for the two species of pink river dolphins inia geoffrensis and inia boliviensis inhabiting the amazon and orinoco river basins. Pdf molecular differentiation among inia geoffrensis and. For other inia species heterozygosities are even lower, gravena 20 reported h e 0. The geographical range of this dolphin is vast, complex and fragmented, with some populations probably isolated for millions of years and having become genetically and morphologically distinct. Aliaga rossel e mcguire t l in press iniidae in wallace et al.
The recent discovery of the araguaian river dolphin inia araguaiaensis highlights how little we know about the diversity and biology of river dolphins. Genetic diversity has been treated by the iucn as a priority parameter for measuring the risk of extinction of a species, since it represents the substratum on which natural selection acts to promote the adaptation of a species to. The article presents a study about the stomach content of a juvenile bolivian river dolphin inia geoffrensis boliviensis, an endemic subspecies of the amazon river. Abstract the pink river dolphin genus inia, is widely distributed in the orinoco and amazon basins. The digestive tract of inia boliviensis dorbigny, 1834. Distribution and abundance of the river dolphin inia. Inia humboldtiana this large fish reaching up to two metres in length is a staple of the local smallscale fishing industry. Inia boliviensis can further be divided into two distinct management units mu based both on mitochondrial and nuclear markers moritz, 1994. No previous studies have focused on the genetic structure of this genus. Sep 01, 2015 crown group inia refers to the crown clade arising from the last common ancestor of all named species of inia, including inia boliviensis dorbigny, 1834 and inia araguaiaensis hrbek et al.
Mandevilla boliviensis is native to bolivia and ecuador. Inia geoffrensis boliviensis has populations in the upper reaches of the madeira. Pdf abundance of the bolivian river dolphin inia boliviensis in. Pdf mercury in populations of river dolphins of the.
Inia boliviensis dorbigny 1834 in tributaries of the itenez river bolivian amazon in. Amazon river system as an ecological barrier driving. Pdf analysis of distribution of river dolphins inia and. Organised by faunagua, but in collaboration with many organizations, a workshop was hold in which the first steps were taken to formulate an action plan for the conservation of the inia boliviensis in bolivia. Pdf on may 8, 2008, ruizgarcia and others published molecular differentiation among inia geoffrensis and inia boliviensis iniidae, cetacea by means of nuclear intron sequences find, read. Amazon river system as an ecological barrier driving genetic. Pdf conservation of the river dolphin inia boliviensis in bolivia. This chapter explores the amazon river dolphin commonly known as boto. Population, density estimates, and conservation of river dolphins inia and sotalia in the amazon and orinoco river basins. The article presents a study about the stomach content of a juvenile bolivian river dolphin inia geoffrensis boliviensis, an endemic subspecies of the amazon river dolphin, found in the upper. The boto is the largest of the river dolphins with a. Genetic diferentiation sic in populations of the river dolphins genus inia blainville, 1817 and apports to the taxonomic status with molecular analysis. These sequences were found to be polymorphic within the inia genus and showed shared homology with cetacean dqb1 sequences, especially, those of the monodontidae and phocoenidae.
Feb 05, 2020 plural of inionzoology a south american freshwater dolphin inia boliviensis with a hairy snout. Yaburol inia geoffrensis boliviensis tir tana apta ke geoffrensis katca vey inia oxi vey iniidae yasa ke cetacea veem odontoceti volveyveem. However, this study only examined samples from two extremes of the distribution of inia so is it. Aliaga rossel e mcguire t l in press iniidae in wallace et. First evaluation of abundance of the three river dolphin species inia geoffrensis, i. The bolivian river dolphin, or inia boliviensis, is one of four freshwater river dolphin species in south america. Previous morphological and genetic studies have proposed the existence of at least two evolutionary significant units. Em 1824, alcide dorbigny descreveu o inia boliviensis como uma especie distinta, e estabelecendo o termo generico inia. The bolivian river dolphin inia boliviensis, a mammal, is a species related to the amazon river. Until the recent construction of hydroelectric dams, a series of 18 rapids divided the upper and lower madeira river, and these rapids were thought to separate two species of. Locally called the bufeo inia boliviensis in bolivia, it is. Aliaga rossel e mcguire t l in press iniidae in wallace et al eds distribucion from ucp 441 at university of central punjab. Inia boliviensis is an independent biological population figs.
In this study, we described the acoustic repertoire of this newly discovered species in concert with their behaviour. In the present study we tested if a series of 18 rapids on the upper madeira river form an effective barrier to gene flow, and in particular if they delimit the distribution of the boto inia. Mercury in populations of river dolphins of the amazon and orinoco basins. First report of major histocompatibility complex class ii. The gray whale eschrichtius robustus, also known as the grey whale, gray back whale, pacific gray whale, or california gray whale, is a baleen whale that migrates between feeding and breeding grounds. Population sizes of inia and sotalia were estimated for different habitats main river, tributary, lake, island, confluence, and channel. Analysis of distribution of river dolphins inia and sotalia in protected and transformed areas in the amazon and orinoco basins. The newly described araguaian river dolphins, inia. A total of 291 line and 890 strip transects were conducted, covering a. Population, density estimates, and conservation of river dolphins.
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. Isthminia panamensis, a new fossil inioid mammalia. Pdf conservation of the river dolphin inia boliviensis. Locally known as bufeos, it is found in some rivers in the upper madeira basin of the bolivian amazon.
Amazon river dolphins were until recently considered to be of one species by most authors, inia geoffrensis. We observed 778 inia geoffrensis, 1,323 inia boliviensis, and 764 sotalia fluviatilis. Bolivian river dolphins were discovered by the western world in 1832 by french researcher alcide dorbigny. Although we follow the suggestions of the society for marine mammalogys committee on taxonomy 2014 in provisionally recognizing two sub. Media in category inia boliviensis the following 5 files are in this category, out of 5 total. Population status of the bolivian river dolphin inia boliviensis d. Pdf mercury in populations of river dolphins of the amazon. The article presents a study about the stomach content of a juvenile bolivian river dolphin inia geoffrensis boliviensis, an endemic subspecies of the amazon river dolphin, found in the upper madeira river basin in bolivia. Currently, the systematics of inia have been revised with molecular studies, which suggest that the genus of inia found in bolivia is a distinct species, inia boliviensis banguera et al. As a shrub, it grows to 3 tall and spreads to 6 wide.
Molecular identification of evolutionarily significant units. The amazon river dolphin, genus inia, is endemic to the major river basins of northern south america. Inia boliviensis is the only cetacean in bolivia and despite its endemic status basic knowledge about it is still scarce. It is unique for its migratory patterns, breeding in the andean foothills in the west of the amazon and traveling across the continent to mature in the amazon delta. The negro river currently has seven floating houses where tourists can feed and interact with botos, each with its own history of how these aggregations were formed. First evaluation of abundance of the three river dolphin. The bolivian river dolphins are separated from the amazonian river dolphins by a series of rapids and falls. The amazon dolphin or boto inia geoffrensis has a long, narrow beak. Novel herpesviruses in riverine and marine cetaceans from south america. Stomach content of a juvenile bolivian river dolphin inia. The recognition of anew river dolphin species endemic to bolivia increases the importance and necessity of protecting this species. The action plan for south american river dolphins 20102020. Thus, in the studied section of the madeira river we encountered i. Isthminia panamensis, a new fossil inioid mammalia, cetacea.
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