Amazon River Dolphin

Amazon river dolphin by Oceancetaceen sometimes known as the Orinoco

Amazon Dolphin

The Amazon river dolphin, (other names include boto, bufeo or pink river dolphin), is a species of toothed whale endemic to South America and is classified in the family Iniidae. Three subspecies are currently recognized: Amazon river dolphin,, Bolivian river dolphin and the Orinoco river dolphin while position of Araguaian river dolphin  within the clade is still unclear The three subspecies are each found in a separate river basin (in order) the Amazon basin, the upper Madeira River in Bolivia, and the Orinoco basin.

The Amazon river dolphin is the largest species of river dolphin, with adult males reaching 185 kilograms (408 lb) in weight, and 2.5 metres (8.2 ft) in length. Adults acquire a pink colour, more prominent in males, giving it its nickname “pink river dolphin”. Sexual dimorphism is very evident, with males measuring 16% longer and weighing 55% more than females.

Like other toothed whales, they have a melon, an organ that is used for bio sonar. The dorsal fin, although short in height, is regarded as long, and the pectoral fins are also large. The fin size, unfused vertebrae, and its relative size allow for improved manoeuvrability when navigating flooded forests and capturing prey.

They have one of the widest ranging diets among toothed whales, and feed on up to 53 different species of fish, such as croakers, catfish, tetras and piranhas. They also consume other animals such as river turtles, aquatic frogs, and freshwater crabs. However, this is not particularly surprising, as there are so many forms of life in the Amazon rainforest, and plenty is likely to occasionally find themselves in the river.

In 2018, this species was classed as endangered, by the IUCN with a declining population. Threats include incidental catch in fishing lines, direct hunting for use as fish bait or predator control, damming, and pollution; as with many species, habitat loss and continued human development is becoming a greater threat.

While it is the only species of river dolphin kept in captivity, almost exclusively in Venezuela and Europe, it is difficult to train and often die very young, when kept in captivity..

Life expectancy of the Amazon river dolphin in the wild is unknown, but in captivity, the longevity of healthy individuals has been recorded at between 10 and 30 years. However, a 1986 study of the average longevity of this species in captivity in the United States is only 33 months. An individual named Baby at the  Duisburg Zoo, Germany, lived at least 46 years, spending 45 years, 9 months at the zoo.

Below you will find any news articles on Amazon dolphin (though articles with both words also get sucked in). Also  we will add any information on where you can go to see these in the wild, beneath both of these.

Jaguar

Jaguars are the only big cat not found on the supercontinent. Dominating much of South America, and before the arrival of humans much of Southern North America

photo credit MarcusObal

Jaguar

Jaguars are the only big cat that is found in the Americas. Superficially looking like a Leopard, it is actually no more closely related to a Leopard, than a Lion or Tiger.

Once (as late as the year 1900) ranging from Southern Argentina- north through the rest of South America, and throughout Mexico and the Southern United states (some 19 million square km) its current range is greatly reduced, see the map below.

A map of Jaguar range. Red is the current range, pink is the range back in 1900. As you can see, it only leaves the Jaguar as the king of the Amazon

Wonderful swimmers, fantastic hunters and strong cats, they were undisputed as the apex or one of the apex predators in every environment in which they lived.

They are known to regularly take livestock where it is possible. Possibly as a result of having only millennia rather than the eons that native animals have, they have not learnt to fear humans and keep their distance as healthy populations of lion leopard and tiger do.

However, there is also a huge draw to see this animal in its native habitat. The easiest way to see Jaguar, is usually from a boat on a river.

As with other species on this site, I hope to add many destinations over the next few years. Below these links will be a list of all articles on Jaguars,  and we  will add all the destinations and links we have, as we make them below the news section.

From the great Pantanal – Brazil’s area of wetland, to a number of reserves across the amazon rainforest (it is estimated that 57,000 Jaguars still survive in the fragments of the Amazon rainforest that still stand.  On top of this, there is still significant jaguar habitat in Mexico and central America. One of these was set up by the late great Alan Rabinowitz, who fought right up to hist death for protecting places like Cookscomb basin reserve in Belize.

As with many other wildlife around the world, travel to see these animals is essential, if we are to give a financial incentive to those who live and work in the country. Get in touch if you work in conservation of this incredible animal, or tourism. Link is at the top of the main page (or click here)

 

 

Large thriving network of settlements thrived in Columbian Amazon before European settlers

Both the Amazon and the Congo have been given the status of totally virgin rainforest, without any human impact. What is becoming increasingly clear is that this is not the case.

Instead it is the case, that the communities which lived here -sometimes in large numbers, lived in balance with the environment.

Pre Columbian settlement evidence in the Amazon

Archaeologists have found vast network of settlements in the Columbian Amazon, spanning hundreds or even thousands of square km, consisting of a main settlement with huge platforms, and smaller settlements spread out around. All are linked by causeways, and canals and reservoirs dotted the land to make agriculture possible.

To be sure, these settlements were low density, but they successfully lived in harmony with the rainforest for centuries.

Oddly, while these communities prospered for 1000 years, they disappeared before Columbus arrived, and it is not clear why.

How should this impact work these days? I am not sure. There are no large groups of modern people who have learnt to live in harmony with their environment, but clearly bush people have. Perhaps we need to follow their example – though the current indigenous people of the Amazon do not live in settlements of large size, otherwise we would have know about these centuries ago,

The manned wolf is being seen increasingly often in the Amazon rainforest

The manned wolf that looks rather like a fox on stilts. It is found throughout South American Savannahs

Not actually a fox or a wolf, the manned wolf exists in its own genus.

Living on open savannahs the manned wolf is unfortunately facing the loss of most of its habitat. Though we hear about the loss of the Amazon rainforest the most, all other ecosystems in South America are also under threat.

Continue reading “The manned wolf is being seen increasingly often in the Amazon rainforest”

Amazon rainforest: can it survive Bolsonaro?

I have been writing about Jair Bolsonaro for quite some time. Indeed, those who have been reading this blog for years will know that I became concerned in the run up to the election.

The destruction of the Amazon rainforest is hugely damaging. It is likely to effect the climate worldwide as well as carbon dioxide levels

He has a quite bizarre approach to many things. Indeed, his ruling style is very like Donald Trump. He doesn’t care about Brazil, merely that “his” people do well out of his presidency.

It is quite something, that academics and activists have come together to warn that with the increased attacks on the environmental protections, the Brazilian rainforest would not survive a second Bolsonaro term.

Continue reading “Amazon rainforest: can it survive Bolsonaro?”
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