Conflicts with fisheries and intentional killing of freshwater dolphins (Cetacea: Odontoceti) in the Western Brazilian Amazon

  title={Conflicts with fisheries and intentional killing of freshwater dolphins (Cetacea: Odontoceti) in the Western Brazilian Amazon},
  author={Carolina Loch and Miriam Marmontel and Paulo C. Sim{\~o}es‐Lopes},
  journal={Biodiversity and Conservation},
We report three cases of conflicts with fishing activities of freshwater dolphins Iniageoffrensis and Sotaliafluviatilis in the Western Brazilian Amazon. The animals presented several cuts produced by perforating and cutting objects, especially on the dorsum, sides and flukes. The wounds were probably caused by harpoons and machetes, gear commonly used by local inhabitants for fishing and agricultural practices in the Amazon. The carcasses had not been subsequently used in any way, which… 

Harpooning and entanglement of wild dolphins in the Pacific coast of Guatemala

Due to their close proximity to humans, coastal cetaceans are particularly vulnerable to mortality from incidental killing in fishing gear and directed hunts (Reeves et al., 2003). This note

River Dolphin (Inia geoffrensis, Sotalia fluviatilis) Mortality Events Attributed to Artisanal Fisheries in the Western Brazilian Amazon

In the Western Brazilian Amazon, interactions of boto (Inia geoffrensis) and tucuxi (Sotalia fluviatilis) dolphins with fishing activities are common, but the prevalence of incidental/intentional

Conflicts between river dolphins (Cetacea: Odontoceti) and fisheries in the Central Amazon: A path toward tragedy?

Dolphin interactions with fishermen have increased significantly and pose potential risks to the boto, Inia geoffrensis (Blainville, 1817), and the tucuxi, Sotalia fluviatilis (Gervais & Deville,

Seasonal movements of river dolphins (Inia geoffrensis) in a protected Amazonian floodplain

Deliberate killing for use as bait in a regional catfish (Calophysus macropterus) fishery is the primary threat affecting the survival of the Amazon river dolphin, or boto (Inia geoffrensis).

University of Dundee Both cetaceans in the Brazilian Amazon show sustained , profound population declines over two decades

Obligate river dolphins occur only in the rivers of Asia and South America, where they are increasingly subject to damaging pressures such as habitat degradation, food competition and entanglement in

Human-wildlife conflicts with crocodilians, cetaceans and otters in the tropics and subtropics

Conservation of freshwater biodiversity and management of human-wildlife conflicts are major conservation challenges globally. Human-wildlife conflict occurs due to attacks on people, depredation of

Mammals of the Saracá-Taquera National Forest, northwestern Pará, Brazil

Abstract: The Amazonian rainforest harbors one of the most diverse mammal faunas found anywhere in the world, although this fauna is still poorly known. Inventories are essential for the

Both cetaceans in the Brazilian Amazon show sustained, profound population declines over two decades

Analysis of a 22-year time series of standardised surveys for both dolphins within the Mamirauá Reserve, Amazonas State, Brazil shows that both species are in steep decline, with their populations halving every 10 years (botos) and 9 years (tucuxis) at current rates.



Distribution of the South American dolphin Sotalia fluviatilis

The southern limit of the range of the marine form of Sotalia is associated with the confluence zone of the Brazil and Falkland currents, suggesting that low sea-surface temperature is a limiting factor, whereas in fresh water the distribution of Amazonian SotalIA seems more closely related to the movements and concentrated occurrence of prey.

An overview of dolphin depredation in Italian artisanal fisheries

This study is the first attempt to monitor dolphin–fisheries interactions and assess depredation rates in Italy, providing information on the areas where future investigation should be concentrated.

Use of Tucuxi Dolphin Sotalia fluviatilis for Medicinal and Magic/Religious Purposes in North of Brazil

Sotalia fluviatilis (Gervais 1853) commonly known as the tucuxi is one of the least known cetacean species. The main threats that affect the species are directly related to habitat degradation and

The looming crisis: interactions between marine mammals and fisheries

Immediate action is needed to assess the magnitude of bycatch, particularly in many areas of Africa and Asia where little work has been conducted, and new and innovative solutions are required that take account of the socioeconomic conditions experienced by fishermen and allow for efficient transfer of mitigation technology to fisheries of the developing world.

Distribution and exploitation of manatees in Sierra Leone

Sierra Leone's surveys in 1986–1987 showed that manatees are still widely distributed in coastal districts of the country, but that they are being regularly caught in some places, at levels that may not be sustainable.

The role of historical dolphin takes and habitat degradation in shaping the present status of northern Adriatic cetaceans

1. Nine cetacean species have been reliably reported to occur in the shallow northern Adriatic Sea since the 17th century. However, only two species were considered regular there until the 1970s:

Who’s Eating All the Fish? The Food Security Rationale for Culling Cetaceans

In response to the global fisheries crisis, characterized by falling abundances of resource species, falling catches, increasing habitat destruction, and extremely high subsidies, the advocates of

Competition Between Marine Mammals and Fisheries: Food for Thought

It is not surprising that, when there is a “new kid on the block,” co-existence is not always very peaceful, and many of the encounters between humans and marine mammals result in a variety of conflicts.


INTRODUCTION Wherever the distribution of a marine mammal population overlaps with that of a commercial fishery, there exists the potential for various interactions between them. Such situations