River dolphins fry

• [PDF File]conserving threatened freshwater dolphins in the Sundarbans, Bangladesh

  https://info.5y1.org/river-dolphins-fry_1_eb1876.html

  the south as well as in the much smaller Karnaphuli–Sangu River system in south-eastern Bangladesh (Kasuya and Haque, 1972; Haque, 1976; Reeves and Brownell, 1989; Reeves, et al., 1993). The distribution of these true river dolphins tends to be clumped in deep counter-current

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• [PDF File]Status, Distribution and Conservation Threats of Ganges River Dolphin ...

  https://info.5y1.org/river-dolphins-fry_1_340c3e.html

  River, dolphins face the threat of local extinction unless conservation efforts are stepped up immediately. The situation requires urgent action because dolphins top the food chain and are indicators of healthy aquatic ecosystem. Their decline indicates the degrading quality of water resources and is a warning to use

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• [PDF File]American Shad - North Carolina Wildlife Resources Commission

  https://info.5y1.org/river-dolphins-fry_1_7ec1d4.html

  And dolphins love to eat shad! Their ears contain tiny mineral bits called “otoliths” that are sup - ported by sensory hairs. Vibrations ... 8 million “marked” shad fry in the Roanoke River as part of the Roanoke River American Shad Restoration Program. So far, Commission biologists have captured more than 50 3- to 4-inch, hatchery ...

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• [PDF File]First evaluation of abundance of the three river dolphin species ... - WWF

  https://info.5y1.org/river-dolphins-fry_1_d199f7.html

  River dolphins are seriously threatened, particularly through decrease in distribution due to fragmentation of their habitat. In the Amazon, for example, there are problems caused by pollution, deforestation and commercial fisheries. Moreover, during recent years, dolphins have been killed for use as bait for catfish

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• [PDF File]Amazon river dolphins Inia geoffrensis are on the path to extinction in ...

  https://info.5y1.org/river-dolphins-fry_1_984952.html

  conclude that the Amazon river dolphin population is in severe decline because of human pressures, even in one of the better protected parts of its range. Unless the accidental and deliberate killing of this species is rapidly reduced, it is highly likely that the Amazon river dolphin will follow its Yangtze counterpart to extinction.

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• [PDF File]Ganges River Dolphin Conservation Action Plans

  https://info.5y1.org/river-dolphins-fry_1_ecc47e.html

  The first meeting of experts to discuss river dolphins was held in Wuhan, People's Republic of China, October 28-30, 1986 and the presented papers were published in an IUCN special volume ZBiology and conservation of the river dolphins : proceedings of the Workshop on Biology and Conservation of the Platanistoid Dolphins’, edited by Robert

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• Evolution of river dolphins

  that river dolphins comprise an unnatural group. Non- monophyly of river dolphins is consistent with their highly disjunct geographical distributions (figure 1): the Amazon river dolphin, Inia geoffrensis, and the La Plata river dolphin, Pontoporia blainvillei, are found in South America; the Yingtze river dolphin, Lipotes vexillifer, and

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• [PDF File]Status of Ganges river dolphins, Threats and Best practices for ...

  https://info.5y1.org/river-dolphins-fry_1_4174ac.html

  the Yamuna River at Delhi (Anderson 1878), and this distribution continued downstream till the Chambal confluence. However, after 1967, dolphin signings have become rare in the Yamuna River above the Chambal River confluence (Sinha et al. 2000). Dolphins have also been extirpated from a 163-km stretch of the Sarda River (Mahakali River in Nepal)

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• [PDF File]Species fact sheet: River Dolphins - Panda

  https://info.5y1.org/river-dolphins-fry_1_69aeb4.html

  River Dolphins River dolphins and porpoises swim in some of the world's mightiest rivers, including the Ganges, Indus, Yangtze, Mekong, and Amazon. But these river basins are also home to over 15 per cent of our planet's people and include some of the most densely populated, and poorest, areas on Earth.

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• [PDF File]Species/Freshwater fact sheet: River Dolphins - Panda

  https://info.5y1.org/river-dolphins-fry_1_476c98.html

  Mekong River, at least four Irrawaddy dolphins died per year due to gillnet entanglement from 2001–2003, out of a population of only 70–100 individuals. Freshwater cetaceans are also killed by electric fishing and dynamite fishing. Indus river dolphins also occasionally die after becoming

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• [PDF File]Occurrence Patterns, Habitat Associations, and Potential Prey of the ...

  https://info.5y1.org/river-dolphins-fry_1_c54124.html

  habitats for dolphins are reduced (Pilleri & Gihr 1977, Best 1984). There is disagreement in the lit-erature as to the preferred habitat of river dolphins. Layne (1958) found most river-dwelling dolphins in quiet waters near shore or in coves with emer-gent aquatic vegetation, but most lagoon residents occupied open water. Trebbau and Van Bree ...

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• [PDF File]Species/Freshwater fact sheet: River Dolphins

  https://info.5y1.org/river-dolphins-fry_1_58440a.html

  River Dolphins River dolphins and porpoises swim in some of the world's mightiest rivers, including the Ganges, Indus, Yangtze, Mekong, and Amazon. But these river basins are also home to over 15 per cent of our planet's people and include some of the most densely populated, and poorest, areas on Earth. ...

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• Occurrence Patterns, Habitat Associations, and Potential Prey ... - JSTOR

  erature as to the preferred habitat of river dolphins. Layne (1958) found most river-dwelling dolphins in quiet waters near shore or in coves with emer-gent aquatic vegetation, but most lagoon residents occupied open water. Trebbau and Van Bree (1974) and Pilleri and Gihr (1977) described an affinity for wide lagoons with deep, calm water and ...

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• [PDF File]WWF’S RIVER DOLPHIN INITIATIVE

  https://info.5y1.org/river-dolphins-fry_1_17be67.html

  of river dolphin mortality. In South America, intentional killing of river dolphins for fish bait and meat affects several thousand dolphins per year. •Infrastructure projects that affect habitat connectivity, including hydropower dams, irrigation barrages and embankments. In Asia, river dolphin habitat has decreased by 50-70%

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• [PDF File]Ecology and Conservation of Ganges River Dolphin in Karnali

  https://info.5y1.org/river-dolphins-fry_1_1a5f05.html

  River dolphins are often considered as an indicator species for healthy freshwater ecosystem in the Indian subcontinent (Behera et al. 2013). They can act as population trend indicators in degraded freshwater ecosystems (Braulik et al. 2014). Despite this importance, river dolphins have received little conservation attention (Behera et al. 2013

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• [PDF File]Evolution of River Dolphins - JSTOR

  https://info.5y1.org/river-dolphins-fry_1_f6041d.html

  that river dolphins comprise an unnatural group. Non-monophyly of river dolphins is consistent with their highly disjunct geographical distributions (figure 1): the Amazon river dolphin, Inia geoffrensis, and the La Plata river dolphin, Pontoporia blainvillei, are found in South America; the Yangtze river dolphin, Lipotes vexillifer, and

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• [PDF File]Assessment by: Braulik, G.T. & Smith, B.D. - ResearchGate

  https://info.5y1.org/river-dolphins-fry_1_30d891.html

  Considerable effort has been made to document the status of South Asian River Dolphins since the early 1970s, yet rigorous quantitative data on numbers, mortality, extent of occurrence, and area of

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• [PDF File]Evolution of river dolphins - Smithsonian Institution

  https://info.5y1.org/river-dolphins-fry_1_7c3cb2.html

  that river dolphins comprise an unnatural group. Non- monophyly of river dolphins is consistent with their highly disjunct geographical distributions (figure 1): the Amazon river dolphin, Inia geoffrensis, and the La Plata river dolphin, Pontoporia blainvillei, are found in South America; the Yingtze river dolphin, Lipotes vexillifer, and

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• [PDF File]Trophic ecology of Amazonian River dolphins from three rivers in Brazil ...

  https://info.5y1.org/river-dolphins-fry_1_d2437f.html

  River dolphins from the genus Inia are widely distributed in the Amazon, Orinoco and Tocantins River basins. Current ... Fry 2006; Post 2002). Also, a combination of both isotopes could be used to represent the trophic niche of a species based on a bidimensional space known as isotopic niche

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