Irrawaddy dolphin population genetic
WebApr 9, 2024 · Irrawaddy and pink humpbacked dolphins An Irrawaddy dolphin, also known as the Mekong dolphin, swims in the river at Kampi village in Kratie province, 230 km (143 miles) northeast of Cambodia, on ... WebThe Mekong River Irrawaddy dolphins (Orcaella brevirostris) are one of three Riverine Irrawaddy dolphin populations, all classed as Critically Endangered. The current population abundance estimate of the Mekong population is 66-86 individuals. Since 2003 there have been 88 dolphin deaths recorded, making this population of
Irrawaddy dolphin population genetic
Did you know?
WebSoutheast-Asian Irrawaddy dolphins ( Orcaella brevirostris) are highly susceptible to anthropogenic effects that reduce effective population size and genetic diversity. Coastal populations are currently listed as “Vulnerable” on IUCN’s Red List, while some riverine populations are listed as “Critically Endangered”. Though conservation ... WebIn this paper, we aim to elucidate the conservation status of the Irrawaddy dolphin population inhabiting the Mekong River by: (a) investigating Irrawaddy dolphin genetic samples from Cambodia in a phylogenetic context; (b) analysing the potential presence and extent of population structure among Irrawaddy dolphins in the Mekong River; and (c) …
WebThe Mekong River Irrawaddy dolphins inhabit a 118-mile stretch of the river between Cambodia and Lao PDR and are scarce—just 92 individuals are estimated to still exist. These dolphins have a bulging forehead, short beak, and 12-19 teeth on each side of both jaws. WebThe Irrawaddy dolphin population inhabiting the Mahakam is estimated to have become isolated from other populations for ~ 500,000 years and the population has two unique genetic haplotypes compared to samples from other freshwater populations or in Indonesia from coastal populations (Budi, 2024).
The Irrawaddy dolphin (Orcaella brevirostris) is a euryhaline species of oceanic dolphin found in scattered subpopulations near sea coasts and in estuaries and rivers in parts of the Bay of Bengal and Southeast Asia. It closely resembles the Australian snubfin dolphin (of the same genus, Orcaella), which was not … See more One of the earliest recorded descriptions of the Irrawaddy dolphin was by Sir Richard Owen in 1866 based on a specimen found in 1852, in the harbour of Visakhapatnam on the east coast of India. It is one of two species in its genus. … See more The Irrawaddy dolphin's colour is grey to dark slate blue, paler underneath, without a distinctive pattern. The dorsal fin is small and rounded behind the middle of the back. The forehead … See more Communication is carried out with clicks, creaks, and buzzes at a dominant frequency of about 60 kilohertz, which is thought to be used for See more Irrawaddy dolphins have a mutualistic relationship of co-operative fishing with traditional fishers. Fishers in India recall when they would call out to the dolphins, by tapping a wooden … See more The species name brevirostris is from the Latin meaning short-beaked. It is very closely related to the Australian snubfin dolphin (Orcaella heinsohni). The two snubfin dolphins … See more Although sometimes called the Irrawaddy river dolphin, it is not a true river dolphin, but an oceanic dolphin that lives in brackish water near coasts, river mouths, and estuaries. It has established subpopulations in freshwater rivers, including the See more Irrawaddy dolphins are more susceptible to human conflict than most other dolphins that live farther out in the ocean. Drowning in See more WebThe genus was long believed to be monotypic with the only species being the Irrawaddy dolphin; however, in 2005, supposed Irrawaddy dolphin populations inhabiting the Australian/New Guinean regions were found to be significantly different and were declared a separate new species named the Australian snubfin dolphin. Taxonomy and evolution [ edit]
WebJan 3, 2024 · Historical size of the Irrawaddy dolphin (Orcaella brevirostris) population inhabiting the Mekong River is unknown and there is significant concern for long-term survival of the remaining population as a result of low abundance, slow reproduction rate, high neonatal mortality, and continuing anthropogenic threats.
WebApr 8, 2024 · About 1,400 proboscis monkeys live in the mangroves of Balikpapan Bay, or 5% of the total population in Borneo, according to a coalition of local civil society groups. small toys for 12 year old boysWebDec 31, 2009 · The species Orcaella brevirostris was recently split into two species based on concordant character differences in external features, osteology, and genetics between the dolphins occurring in... hii clothesWebApr 2, 2024 · Genetics and Molecular Biology Abstract The Irrawaddy dolphin (Orcaella brevirostris) is an endangered, small cetacean species which is widely distributed in rivers, estuaries, and coastal waters throughout the tropical and subtropical Indo-Pacific. hii clothingWebMar 2012 - Jun 20142 years 4 months. College Eight, UCSC. As a two-year Resident Assistant at the University of California, Santa Cruz, I have … small toys for 2 year oldsWebSince 2007, populations have appeared to stabilise; the most recent estimate in 2024 is 89 individuals (with 95% confidence interval: 78-102 individuals)7. The number of Irrawaddy dolphins in the Ayeyarwady river in Myanmar has been … small toys animalsWebThese dolphins live in the shallow waters closer to the coastline. They are one of the few species that are known to be able to live in freshwater habitats. Irrawaddy Dolphin Behavior. The Irrawaddy Dolphin has to get … small toys for 2 year old girlWebMay 1, 2024 · The subpopulation of the Irrawaddy dolphin (Orcaella brevirostris) living in the Mekong River, Cambodia, is considered to be critically endangered. The aim of the investigation was to gain information about the genetic variation, health status and exposure to toxic compounds of these dolphins. small toys for 2 year old girls