scholarly journals Status of the Ganges river dolphin or shushuk Platanista gangetica in Kaptai Lake and the southern rivers of Bangladesh

Oryx ◽  
2001 ◽  
Vol 35 (01) ◽  
pp. 61 ◽  
Author(s):  
Brian D. Smith ◽  
Benazir Ahmed ◽  
Muhammad Edrise Ali ◽  
Gill Braulik
Keyword(s):  
Ganges River ◽  
River Dolphin ◽  
The Ganges

scholarly journals Characterization of artisanal fisheries in Nepal and potential implications for the conservation and management of Ganges River Dolphin (Platanista gangetica gangetica)

2015 ◽  
Author(s):  
Shambhu Paudel ◽  
Juan C Levesque ◽  
Camilo Saavedra ◽  
Cristina Pita ◽  
Prabhat Pal
Keyword(s):  
Anthropogenic Activities ◽  
Fishing Effort ◽  
Main Channel ◽  
Artisanal Fisheries ◽  
Ganges River ◽  
River Systems ◽  
River Dolphin ◽  
Main River ◽  
Local Species ◽  
The Ganges

The Ganges River dolphin (Platanista gangetica gangetica) (GRD) is classified as one of the most endangered of all cetaceans in the world and the second scarcest freshwater cetacean. The population is estimated to be less than 2,000 individuals. In Nepal’s Narayani, Sapta Koshi, and Karnali river systems, survival of GRD continues to be threatened by various anthropogenic activities, such as dam construction and interactions with artisanal fisheries. A basic description of the geographic scope, economics, and types of gear used in these fisheries would help managers understand the fishery-dolphin interaction conflict and assist with developing potential solutions to reduce interactions between GRD and local fisheries in Nepal. The main purpose of the study was to collect fishery and socio-economic information by conducting interviews with local fishermen in the Narayani, Sapta Koshi, and Karnali river systems. Based on interviews (n = 163), 79 percent of Nepalese fishermen indicated fishing for local species (e.g., mullet [Rhinomugil corsula] or siloroid catfish [Bagarius bagarius]) was their primary form of income. Fishermen reported fishing effort was greater in summer than winter; greatest in the afternoon (1430 hrs ± 0.27) and during low water level conditions; and gear was set 4.8 ± 0.2 days/week. Fishermen reported using eight different types of monofilament nets (gillnets and cast nets). Sixty percent used gillnets less than 10 m long, and less than one third preferred gillnets between 10 and 100 m long; a few used gillnets longer than 100 m. Fishermen usually set their gear close to their village, and about 50 percent preferred to fish in tributaries followed by the main channel behind sandbars and islands, and the main channel near a bank. Fishermen reported seeing more GRD in the main river stem in winter. In summer, fishermen spotted more GRD in tributaries. Most fishermen told us they believed education, awareness, and changing occupations were important for GRD conservation, but they indicated that occupational options were currently limited in Nepal. Nepalese fishermen acknowledged that fisheries posed a risk to GRD, but they believed water pollution, and dam/irrigation development were the greatest threats.

scholarly journals MRI Examination of Trachea and Bronchi in the Ganges River Dolphin (Platanista gangetica).

1999 ◽  
Vol 61 (10) ◽  
pp. 1137-1141 ◽  
Author(s):  
Hideki ENDO ◽  
Daishiro YAMAGIWA ◽  
Kazuyoshi ARISHIMA ◽  
Masako YAMAMOTO ◽  
Motoki SASAKI ◽  
...  
Keyword(s):  
Ganges River ◽  
River Dolphin ◽  
Mri Examination ◽  
The Ganges ◽  
Trachea And Bronchi

scholarly journals On the evidence of the Irrawaddy Dolphin Orcaella brevirostris (Owen, 1866) (Mammalia: Cetartiodactyla: Delphinidae) in the Hooghly River, West Bengal, India

2020 ◽  
Vol 12 (8) ◽  
pp. 15905-15908
Author(s):  
Gargi Roy Chowdhury ◽  
Kanad Roy ◽  
Naman Goyal ◽  
Ashwin Warudkar ◽  
Rashid Hassnain Raza ◽  
...  
Keyword(s):  
West Bengal ◽  
Field Work ◽  
Ganges River ◽  
Intensive Monitoring ◽  
River Dolphin ◽  
Irrawaddy Dolphin ◽  
The Ganges

We report the presence and status of the Irrawaddy Dolphin Orcaella brevirostris in the Hooghly River of West Bengal, India.  These observations were made while conducting our field work on the Ganges River Dolphin, which involved vessel-based surveys as well as intensive monitoring from an anchored boat.

scholarly journals Characterization of the artisanal fishing communities in Nepal and potential implications for the conservation and management of Ganges River Dolphin (Platanista gangetica gangetica)

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1563 ◽  
Author(s):  
Shambhu Paudel ◽  
Juan C. Levesque ◽  
Camilo Saavedra ◽  
Cristina Pita ◽  
Prabhat Pal
Keyword(s):  
Anthropogenic Activities ◽  
Fishing Effort ◽  
Fishing Communities ◽  
Ganges River ◽  
Artisanal Fishing ◽  
River Dolphin ◽  
New Information ◽  
The Ganges ◽  
Primary Form

The Ganges River dolphin (Platanista gangetica gangetica) (GRD) is classified as one of the most endangered of all cetaceans in the world and the second scarcest freshwater cetacean. The population is estimated to be less than 2,000 individuals. In Nepal’s Narayani, Sapta Koshi, and Karnali river systems, survival of GRD continues to be threatened by various anthropogenic activities, such as dam construction and interactions with artisanal fisheries. A basic description of the geographic scope, economics, and types of gear used in these fisheries would help managers understand the fishery-dolphin interaction conflict and assist with developing potential solutions. The main goal was to provide new information on the artisanal fishing communities in Nepal. The specific objectives were to identify, compile, and investigate the demographics, economics, fishing characteristics, and perception of fishermen about GRD conservation in the Narayani, Sapta Koshi, and Karnali rivers so conservation managers can develop and implement a potential solution to the GRD-fishery interaction problem in Nepal. Based on 169 interviews, 79% of Nepalese fishermen indicated fishing was their primary form of income. Fishermen reported fishing effort was greater in summer than winter; greatest in the afternoon (14:30 hrs ± 0:27) and during low water level conditions; and gear was set 4.8 ± 0.2 days/week. Fishermen reported using eight different types of monofilament nets (gillnets and cast nets). Sixty percent used gillnets less than 10 m long, and nearly 30% preferred gillnets between 10 and 100 m long; a few used gillnets longer than 100 m. Most fishermen reported they believed education, awareness, and changing occupations were important for GRD conservation, but they indicated that alternative occupational options were currently limited in Nepal. Nepalese fishermen acknowledged that fisheries posed a risk to GRD, but they believed water pollution, and dam/irrigation developments were the greatest threats.

scholarly journals Status of ganges dolphin, Platanista gangetica gangetica (Roxburgh, 1801) in the river Buriganga, Dhaka

2015 ◽  
Vol 43 (1) ◽  
pp. 109-120 ◽  
Author(s):  
Shayer Mahmood Ibney Alam ◽  
Md Muzammel Hossain ◽  
Mohammad Abdul Baki ◽  
Naser Ahmed Bhouiyan
Keyword(s):  
Population Abundance ◽  
Ganges River ◽  
River Dolphin ◽  
The Mean ◽  
The Ganges ◽  
Buriganga River

Population abundance and density of the Ganges River Dolphin Platanista gangetica gangetica (Roxburgh, 1801) was studied in the Buriganga River from December 2012 to November 2013.The survey was conducted twice a month. The dolphins were counted directly and applied in transect length of 10.5 km within 15 km stretches of the river. A total of 34 sightings of dolphins were recorded both in individuals and groups. We encountered the dolphins at the rate of 0.48 dolphins per km in the Buriganga River. Highest best-high-low estimate of 12-14-10 individuals were recorded in November 2013. The mean density was 0.38 (SD ±0.37) dolphins/km² with the highest density of dolphin observed also in the month of November, which was 1.14 dolphin/km². Pollution and water traffic were observed to be the major threats to the dolphins.Bangladesh J. Zool. 43(1): 109-120, 2015

scholarly journals Status, distribution, threats, and conservation of the Ganges River Dolphin Platanista gangetica (Mammalia: Artiodactyla: Cetacea) in Nepal

2020 ◽  
Vol 12 (1) ◽  
pp. 15106-15113
Author(s):  
Deep Narayan Shah ◽  
Amit Poudyal ◽  
Gopal Sharma ◽  
Sarah Levine ◽  
Naresh Subedi ◽  
...  
Keyword(s):  
Population Survey ◽  
Economic Status ◽  
River System ◽  
Nationwide Survey ◽  
Distribution Range ◽  
Suitable Habitat ◽  
Ganges River ◽  
River Systems ◽  
River Dolphin ◽  
The Ganges

The Ganges River Dolphin Platanista  gangetica  has been classified as Endangered in the IUCN Red List of Threatened Species.  The IUCN changed its status from ‘Vulnerable’ to ‘Endangered’ in 1996 as the species population was declining in its entire distribution range.  It is, however, classified as ‘Critically Endangered’ in Nepal.  Historically, the freshwater cetacean has been documented in the Karnali, Koshi, Narayani, and Mahakali basins.  With their population and distribution range in decline, the Ganges River Dolphin (GRD) is no longer found in the Mahakali River system, which demarcates and traverses the Western border of India and Nepal.  This study examines the status and distribution of the GRD in the river systems of Nepal during the monsoon of 2016.  The national dolphin population survey was conducted in the three largest river basins in Nepal—Karnali, Narayani, and Koshi.  Each of the three basins represent the extreme upstream limit of the GRD distribution in Ganges River basin.  The national population survey included both a boat-based survey and shore-based synchronized counting in each of the three river systems.  Fifty-two (Best-High-Low: 52-61-50) dolphins were counted during the entire nationwide survey, conducted in July–August, 2016.  Researchers gathered social-data from locals residing alongside the observed basin, giving priority to artisanal fishers and those subsisting to some degree from the rivers known to host the river dolphin.  A questionnaire survey of ninety-two residents from riparian villages adjacent to the GRD hotspots sheds light on the local perspectives towards dolphin conservation coupled with an assessment of their socio-economic status; artisanal fishing practices; and their awareness of dolphin conservation.  According to the survey, notable threats to dolphin conservation are prey depletion; non-availability of suitable habitat; habitat fragmentation and a low level of awareness.  Based on the counting outcomes and social survey, recommendations have been put forward for the conservation of this species. 

scholarly journals Characterization of artisanal fisheries in Nepal and potential implications for the conservation and management of Ganges River Dolphin (Platanista gangetica gangetica)

2015 ◽  
Author(s):  
Shambhu Paudel ◽  
Juan C Levesque ◽  
Camilo Saavedra ◽  
Cristina Pita ◽  
Prabhat Pal
Keyword(s):  
Anthropogenic Activities ◽  
Fishing Effort ◽  
Main Channel ◽  
Artisanal Fisheries ◽  
Ganges River ◽  
River Systems ◽  
River Dolphin ◽  
Main River ◽  
Local Species ◽  
The Ganges

The Ganges River dolphin (Platanista gangetica gangetica) (GRD) is classified as one of the most endangered of all cetaceans in the world and the second scarcest freshwater cetacean. The population is estimated to be less than 2,000 individuals. In Nepal’s Narayani, Sapta Koshi, and Karnali river systems, survival of GRD continues to be threatened by various anthropogenic activities, such as dam construction and interactions with artisanal fisheries. A basic description of the geographic scope, economics, and types of gear used in these fisheries would help managers understand the fishery-dolphin interaction conflict and assist with developing potential solutions to reduce interactions between GRD and local fisheries in Nepal. The main purpose of the study was to collect fishery and socio-economic information by conducting interviews with local fishermen in the Narayani, Sapta Koshi, and Karnali river systems. Based on interviews (n = 163), 79 percent of Nepalese fishermen indicated fishing for local species (e.g., mullet [Rhinomugil corsula] or siloroid catfish [Bagarius bagarius]) was their primary form of income. Fishermen reported fishing effort was greater in summer than winter; greatest in the afternoon (1430 hrs ± 0.27) and during low water level conditions; and gear was set 4.8 ± 0.2 days/week. Fishermen reported using eight different types of monofilament nets (gillnets and cast nets). Sixty percent used gillnets less than 10 m long, and less than one third preferred gillnets between 10 and 100 m long; a few used gillnets longer than 100 m. Fishermen usually set their gear close to their village, and about 50 percent preferred to fish in tributaries followed by the main channel behind sandbars and islands, and the main channel near a bank. Fishermen reported seeing more GRD in the main river stem in winter. In summer, fishermen spotted more GRD in tributaries. Most fishermen told us they believed education, awareness, and changing occupations were important for GRD conservation, but they indicated that occupational options were currently limited in Nepal. Nepalese fishermen acknowledged that fisheries posed a risk to GRD, but they believed water pollution, and dam/irrigation development were the greatest threats.

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