Tag: Forests

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.

Agile Mangabey

Agile Mangabey

The agile mangabey is an Old World monkey of the white-eyelid mangabey group found in swampy forests of Central Africa in Equatorial Guinea, Cameroon, Gabon, Central African Republic, Republic of Congo, and DR Congo.

Until 1978, it was considered a subspecies of the Tana River mangabey. More recently, the golden-bellied mangabey  has been considered a separate species instead of a subspecies of the agile mangabey.

Similar to other mangabeys, they are active during the day. Although generally tree-living, they do spend a significant portion of their time (12–22%) on the ground, especially during the dry season. It is often heard first, and males have a loud, species-specific call that is believed to be used to space themselves out – in a similar way that wolves operate with howls. Other calls are also used to maintain group cohesion and warn of predators. Group size can be as high as 18 members, led by a single dominant male. Group meetings can be friendly and may involve exchange of members.

Adult males not in groups often travel singly.

Fruit makes up a major portion of the agile mangabey diet. They are known to eat at least 42 different species of fruit. Their tooth structure and powerful jaws allows them to open tough pods and fruits that many other monkeys can not access. Agile mangabeys eat from a number of dominant swamp-forest trees, including Irvingia, Sugar plums when they are fruiting. They also eat fresh leaf shoots from Raffia palm when fruits are scarce. Grass and mushrooms, Invertebrates, bird’s eggs and some vertebrate prey, such as rodents.

As we find links, to help you book to see this species, the links will be added at the bottom of the page.

Primate family tree main and great and lesser apes

Primate family tree

Great apes
Lesser apes
Old world monkeys
Lemurs
New world monkeys
Lorisidae & allies
Tarsiaforms

The primates are in some ways one of the most successful families. It is true that many are now endangered, however, unfortunately, that is as a result of the run-away success of the most successful member of the primate family us! Having left the rainforests behind, we have been reducing their coverage dramatically over the last few centuries. 

The sad thing, is that while we have pushed many of our closest cousins towards extinction, the loss of forests may well cost us dearly in the future as well. As a species, we need to pull together to meet this challenge. in order to jump to the various families, click on the family of interest above – though all can also be reached by scrolling down.

Great Apes

Chimpanzee
Boonobo
Sumatran Orangutan
Borneon Orangutan
Tapunali Orangutan
Humans on the beach
Eastern Lowland gorilla
Mountain Gorilla
Western lowland gorilla
Cross river gorilla

Great ape Family split is thought to have split from its nearest relative – the gibbon family, around 17 million years ago.

4 million years later the Orangutan family split from the gorilla line and the human/chimp line.

3 million years after this (so around 10 million years ago) the gorilla family split from the Homo (humans) and Pan

Finally the human line (homo) split from the Pan line 5-6 million years ago.

It should be noted, that chimpanzees and Bonobos split from a common ancestor just 1.8 million years ago. This occurred as the two populations ceased to be able to have contact with each other – the Congo rive formed between 1.5 and 2 million years ago.

For more information on each species, click on their photo and this will take you to their page

It should be noted that while I have grouped eastern western and skywalker gibbon together, there is some contention that the skywalker gibbon should be in its own genus, having diverged around half a million years aog

Gibbons

siamang gibbon genus Symphalangus
hookock gibbon (Eastern, Western and Skywalker) Genus Hoolock
genus Normascus (crested gibbon)
Genus Hylobates (dward gibbons) Agile gibbon

Genus Nomascus

This family is the Genus: Nomascus or crested gibbon.

The last Genus of gibbons is Hylobates: dwarf gibbons.

Allens swamp monkey

Allens swamp monkey

Given where they choose to live, they are currently listed as least concern, however, the population is declining, as a result of a mixture of hunting for the bushmeat trade, and habitat loss. While it is also hunted by raptors, snakes and bonobos, this hunting relies on the availability of the monkey, which means that as populations decrease there is less hunting, unfortunately we humans have overcome this natural method to stop extinction.

Below is a list of articles on this site which have been published on this site, and below this is a camera trap video of this monkey in the wild. Below both of these, we will add any links to places where this species can be seen in the wild, which will help the survival of this species.

The Manned wolf

Looking, at first glance, like a fox on stilts, it is found in Argentina, Brazil, Bolivia, Peru, and Paraguay, and is almost extinct in Uruguay. It is actually not a wolf or a dog, but instead sits in its own genus Chrysocyon  which means “golden dog”. It is crepuscular and omnivorous, and lives on the open habitat of the South America Savanna. The IUCN classes it as near threatened, while a Brazilian organisation with a similar role lists it as vulnerable.

Its name in a local language calls it a big fox. Indeed some studies have suggested that it should be in the same genus as pseudo-foxes.

A recent study suggested that its nearest relative was the Falkland islands wolf, and its mainland relatives – but you have to go back 7 million years to find a common ancestor with this group.

It only hunts solitarily, and its preferred habitat is grasslands, scrub prairies, and forests.

It is not currently considered endangered, given its wide area in which it inhabits, never-the-less it is recognized as a near threatened species due to its reducing numbers. In Brazil, Argentina and Uruguay it is forbidden to hunt them. It has been used to publicize the fight to protect the Brazilian cerrado, by placing it on one of the Brazilian notes.

This animal was shown in great detail in planet earth 3 episode 3, however, this clip is from a bbc series a few years ago.

As we make contacts which you can use to plan your travel to see this animal for yourself.

Lynx (canada)

Canada lynx

The Canada lynx is one of 2 new world species, and is found through much of Canada and Alaska, throughout the Boreal forests of spruce and fir. They are hunted but the harvest is worked out on the basis of the population, so it rises and falls quite a lot. Climate change is effecting its northern range, and unfortunately is bringing this cat and the bobcat into more common contact, leading to an increasing number of hybrids along the area that they meet. There are thought to be 10-12 thousands of the Canada lynx across its range.

Clouded leopard and Sunda clouded leopard

Clouded leopard and sunda clouded leopard

Clouded leopards are actually one of the most ancient cat species, however due to their inability to roar or purr, they cannot officially be considered a big cat (roar) or a small cat (purr) due to their definition, which puts them in an odd category. They are most closely related to snow leopards, and are in the same family as the big cats from genetic research. It has recently been confirmed that there are 2 different clouded leopard species, one on the mainland, and the other on the islands (the sunda clouded leopard.

Both species are considered vulnerable. The mainland clouded leopard is thought to number between 3700 and 5580, while the sunda clouded leopard is thought to number around 4500 3800 in Borneo and 730 on Sumatra.

Clouded leopards are found in the forests of South East Asia. Both Poaching and habitat loss threaten their future survival is not easy to see, it makes it is hard for it to be clear what its current range is. However, if you simply compare extinct to all possible remaining habitat, you can see the best possibiltiy is that range has reduced by around 50%


The clouded leopard has been split into two species – the Clouded leopard found on mainland Asia (big picture at the top), and the Sunda clouded leopard (picture above) found on Borneo and Sumatra (these Sunda Clouded leopards have not interbred for a very long time so are considered 2 subspecies). 

 

This is a further image of a clouded leopard though taken in a US zoo, which allows an easier time of getting a good view of the head.

The map above shows the former and current range for these two species. As we start to link with places on the ground, we are likely to create separate pages for each of these clouded leopard species. Below is a video of each species of clouded leopard.

We look to work with people on the ground. Do get in touch if you live or work in the area, and can help people see these incredible animals click here

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Margay

A Margay from Costa Rica Taken by Supreet Sahoo

Margay

This is a relatively small wild cat that is found in central and Southern America, living in primary evergreen and deciduous forests. Until the 1990s they were illegally hunted for the wildlife trade, causing a significant decrease in the wild population. Sine 2008 they have been listed as near concern due to declining population, thought to be caused by habitat loss. It is classed as near threatened -one up from least concerned, but one down from Vulnerable.

There are currently 3 recognized subspecies, these are in turn found South of the Amazon, North of the Amazon and in Central America.

 

Guina (also called the Kodkod)

Guina or Kodkod

The Guina is found primarily in central and Southern Chile, as well as in parts of Argentina at the same latitudes.

Melanistic (black versions) do occur in places. It is usually found in mixed temperate rainforests of the Southern Andean chain and coastal areas such as the Valdivian and Araucaria Forests of Chile, which has bamboo in its lower levels. It prefers evergreen temperate rainforests to deciduous temerate moist forests (or scierophyllous scrub or coniferous forests). It can be found in altered forest, so does alright in areas where humans have disturbed the forest, or in the edges of settled and cultivated areas. It is found as high as 1900m (which is at the treeline) In Argentina it has been recorded in moist Montane forest, which has Valdivian temperate rainforest characteristics, including those with many layered structure with bamboo or numerous lianas and epiphytes.

They are equally happy to be active in the day or the night, though rarely venture into open spaces during the day.

The main threat to their survival is the destruction of the rainforest. Those living near human habitation have also been killed after taking chickens. They are classed as vulnerable.

Analysis has shown that its closest relation is the Geoffrey’s cat

Jaguarundi

Rare in much of their range, with persecution and habitat loss, we yet have time to save this creature

The Jaguarundi is a mid-sized cat, similar in size to the Ocelot – about twice the size of a domestic cat. It is found from central Argentina to Northern Mexico at the top of its range. In central and Southern America it is found east of the Andes. Secretive, and very alert, it actually tends to hunt during the day and the evenings. They live in large home ranges and low densities. In the wild they tend to be solitary or living in pairs.

It is pretty common in Brazil, Peru and Venezuela, though it is thought to be extinct in the USA – it is obviously found in the countries in between, however due to range loss from fragmentation of habitat, as well as direct persecution as a result of taking of poultry, there are many regions where it is threatened as populations are declining fast.

The Jaguarundi shares a clade with the mountain lion (cougar), and is in the same lineage as the Cheetah

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