Western tree hyrax, also known as the western tree dassie or Beecroft tree hyrax,
Western tree hyraxes tend to be solitary, and only occasionally are found in groups of two or three. They are nocturnal and generally feed at night. It has been noted that this species is an especially adept climber. The gestation period is about eight months with a litter size one or two young.
The family Sirenia consists of 2 genus, the Dugongidae (only extant species is the Dugong) and Trichechidae which contains the 3 Manatee species.
The Dugong is the species in the top left (if you cannot pick it out). The Steller sea cow was a close relation of the Dugong
The big difference, is that unlike Manatees with a paddle shaped tail, where as Dugongs have fluked tails.
As always, as links are made to help with tourism, these will either appear below, or each species will be spun off to have its own page. Ecotourism need not have a big impact on the species and its natural behaviour, however, by giving them financial value to the local population you greatly increase the liklihood of survival as well as increasing the standard of living for local people.
Should you work in tourism dealing with these species, do get in touch, there is a link at the top of the home page, with a simple form.
Dugong– The only surviving Dugongidae after the stellers sea cow (described in 1741 and hunted to extinction by 1768 for hide meat and fat) was lost.
It is found in the waters of around 37 countries in the Indo-west Pacific. It has recently become functionally extinct in Chinese waters, and may well be lost entirely in the near future. Its thought that while their current range is highly fractured, it is probably still a similar limit to before. These countries between them, give around 140,000km of coastline, and this area maps with where the correct species of sea grasses grow. The worldwide population is thought to have declined 20% in the last 90 years, though this is pretty good compared to many other species.
There are currently thought to be 100,000, with its conservation status being Vulnerable
Amazonian Manatee-Found in parts of the Amazon basin, throughout parts of Brazil, ColombiaPeru and Ecuador.
It is the smallest of the surviving Manatees. Weights fall between 7,5kg and 350kg, with a 75cm-225cm length. Given that it is likely decreasing, it is going to be below this now.
They are exclusively herbivorous, feeding on water lettuce and hyacinth. During a day, they can consume around 8% of their bodyweight. This mostly occurs during the wet season, during the dry season they return to the main river and survive on their fat reserves. They have a prehensile snout (like a less developed trunk) for feeding
They are considered Vulnerable, with the last count giving an upper limit of 10,000, however, this was in 1997.
West-Indian manatee- So named, because they were first sighted amongst a group of Islands called the West-Indies in the Caribbean – it is no-where near India (as you can see). They live in shallow coastal areas. They have a prehensile snout (like a less developed trunk) for feeding. Unlike elephants, they are not limited to 6 sets of teeth, but only having molars (24-36) it is a simpler layout. As their range includes Florida (well known from the Everglades) this species is well known in places. They are hard to count, living in murky water,
Listed as vulnerable, the whole population is not thought to be greater than 10,000. The 2 subspecies are the Florida manatee (around 2500) and the Antillean Manatee which is found off the Atlantic coast of Mexico and central south America (particularly in the waters of greater Antilles) potentially, historically found along the coast of Texas (and as far north as Dennis, Tennessee).
African Manatee- (or West African Manatee) Although found both on the coast and inland, there is no significant genetic difference between these populations. African Manatees can be found in West African regions which include a wide range of countries – requiring cross nation action to save them. Manatees are found in brackish waters to freshwater: in oceans, rivers, lakes, coastal estuaries, reservoirs, lagoons, and bays on the coast.
The areas with the highest manatee populations are Guinea-Bissau, the lagoons of Côte d’Ivoire, the southern portions of the Niger River in Nigeria, the Sanaga River in Cameroon, the coastal lagoons in Gabon, and the lower parts of the Congo River. Alone amongst manatee species, the African manatee is Omnivorous, eating clams and molluscs as well as fish found in nets (can make up 50% of diet). They are more adaptable than other manatees, being able to survive in salt water (though they need access to fresh water to drink).
They are nocturnal, but many countries, a dead manatee is worth a lot to hunters. They are listed on CITES Appendix 1 with a population under 10,000. Cote d’Ivoire has a population of 750-800. Some of the biggest populations still live in Gabon, status is unknown in many areas. There is much tourism potential – worth a lot in Florida.
Dugongs, a close relation of the sea cow, have not done well over the last few centuries. In places like Australia they still live in large numbers. In places like...
On this post, I will list a group of articles on North American politics and stories. It is unfortunately a fact, that, no matter what your position is on American...
On this post, I will list a group of articles on North American politics and stories. It is unfortunately a fact, that, no matter what your position is on American...
The money will be used to expand wildlife corridors, which will allow easier gene flow, as well as benefitting all wildlife in the area - including prey which in places...
The striped dolphin (sometimes called the Euphrosyne dolphin) has been heavily researched and is found in temperate and tropical waters around the world. It has (until recently been included in the genus Stenella, but it has been shown to actually be an oceanic dolphin. According to a recent study, the closest relatives of the striped dolphin are the Clymene dolphin, the common dolphins, the Atlantic spotted dolphin, and “Tursiops” aduncus, which was formerly considered a subspecies of the common bottlenose dolphin. The striped dolphin was described by Franz Meyen in 1833.
A striped dolphin leaps in the Mediterranean Sea off Toulon
The striped dolphin has a similar size and shape to several other dolphins that inhabit the waters it does (see pantropical spotted dolphin, Atlantic spotted dolphin, Clymene dolphin). However, its colouring is very different and makes it relatively easy to notice at sea. The underside is blue, white, or pink. One or two black bands circle the eyes, and then run across the back, to the flipper. These bands widen to the width of the flipper which are the same size. Two further black stripes run from behind the ear — one is short and ends just above the flipper. The other is longer and thickens along the flanks until it curves down under the belly just prior to the tail stock. Above these stripes, the dolphin’s flanks are coloured light blue or grey. All appendages are black, as well. At birth, individuals weigh about 10 kg (22 lb) and are up to a meter (3 feet) long. By adulthood, they have grown to 2.4 m (8 ft) (females) or 2.6 m (8.5 ft) (males) and weigh 150 kg (330 lb) (female) or 160 kg (352 lb) (male). Research suggested sexual maturity was reached at 12 years in Mediterranean females and in the Pacific at between seven and 9 years. Longevity is about 55–60 years. Gestation lasts about 12 months, with a three- or four-year gap between calving.
In common with other dolphins in its genus, the striped dolphin moves in large groups — usually up to thousands of individuals in number. Groups may be smaller in the Mediterranean and Atlantic. They may also mix with common dolphins. The striped dolphin is as capable as any dolphin at performing acrobatics — frequently breaching and jumping far above the surface of the water. Sometimes, it approaches boats in the Atlantic and Mediterranean, but this is dramatically less common in other areas, particularly in the Pacific, where it has been heavily exploited in the past. Striped dolphins are known as “streakers” throughout the eastern tropical Pacific due to their behavior of rapidly swimming away from vessels to avoid collisions.
The striped dolphin inhabits temperate or tropical, off-shore waters. It is found in abundance in the North and South Atlantic Oceans, including the Mediterranean (sightings and strandings have been reported rather recently in Sea of Marmara[6]) and Gulf of Mexico, the Indian Ocean, and the Pacific Ocean. Roughly speaking, it occupies a range running from 40°N to 30°S. It has been found in water temperatures ranging from 10 to 26 °C, though the standard range is 18-22 °C. In the western Pacific, where the species has been extensively studied, a distinctive migration pattern has been identified. This has not been the case in other areas. The dolphin appears to be common in all areas of its range, though that may not be continuous; areas of low population density do exist. The total population is in excess of two million. The southernmost record is of a stranded individual nearby Dunedin, southern New Zealand in 2017.[7]
Japanese whalers have hunted striped dolphins in the western Pacific since at least the 1940s. In the heyday of “striped dolphin drives”, at least 8,000 to 9,000 individuals were killed each year, and in one exceptional year, 21,000 individuals were killed, though since the 1980s, following the introduction of quotas, this number has fallen to around 1,000 kills per year. Conservationists are concerned about the Mediterranean population which is threatened by pollution, disease, busy shipping lanes, and heavy incidental catches in fishing nets such as long-liners, trawlers, gill nets, trammel and purse seine nets. . Recent threats include military sonar, and chemical pollution from near by harbours. Hydrocarbons are also a major concern such has PCBs (polychlorinated biphenyls) and HCB (hexachlorobenzene). These are said to give problems to additional food chains as well as doing a full body test to see what hydrocarbons may be passed down through parturition and lactation. Attempts have been made to keep the striped dolphin in captivity, but most have failed, with the exception of a few captured in Japan for the Taiji Whale Museum.
Striped dolphins are one of the targeted species in the Taiji dolphin drive hunt.
The adult striped dolphin eats fish, squid, octopus, krill, and other crustaceans. Mediterranean striped dolphins seem to prey primarily on cephalopods (50-100% of stomach contents), while north-eastern Atlantic striped dolphins most often prey on fish, frequently cod. They mainly feed on cephalopods, crustaceans, and bony fishes. They feed anywhere within the water column where prey is concentrated, and they can dive to depths of 700 m to hunt deeper-dwelling species.
The eastern tropical Pacific and Mediterranean populations of the striped dolphin are listed on Appendix II of the Convention on the Conservation of Migratory Species of Wild Animals (CMS), since they have an unfavourable conservation status or would benefit significantly from international co-operation organized by tailored agreements.[9]
On the IUCN Red List the striped dolphin classifies as vulnerable due to a 30% reduction in its subpopulation over the last three generations. These dolphins may also be an indicator species for long term monitoring of heavy metal accumulation in the marine environment because of its importance in the Japan pelagic food web as well as its ability to live for many years. Various other groups have signed memorandum, agreeing not to hunt them.
Conservation efforts have included having ship lines take a new path to their destination such as cruise lines as well as reduced human interaction close up. Feeding the dolphins has also become a problem, and has led to behavioural changes. This has also been suggested as another reason for mortality events.
The striped dolphin once thrived, numbering 127,880 before 1990. Since then, the population has suffered from incidental catches in fisheries. Mortality has been considered unsustainable, but there is a lack of data which hampers conservation efforts.
Various cases of stranding over the years have been a cause for alarm. With an unfavourable conservation status and the increasing amount of debris piling in the ocean every year, striped dolphin’s population is decreasing. 37 dolphins stranded off the Spanish Mediterranean coast were suffering from dolphin morbillivirus (DMV). The causes of these stranding have been changing from epizootic to enzootic.
There is a suggestion that theses strandings are caused by a virus, and that the virus is becoming more common.
The pantropical spotted dolphin is a species of dolphin found in all the world’s temperate and tropical oceans.
The rise of so called, “Dolphin friendly” tuna capture (in the1980s), is thought to have saved millions of this species, in the eastern pacific. This species was first described by John Gray in 1846. Gray’s initial analysis included the Atlantic spotted dolphin in this species. They are now regarded as separate. Both the genus and specific names come from Latin words meaning thin or thinning.
Two subspecies of the pantropical spotted dolphin are recognized, (Another unnamed subspecies, which inhabits inland Hawaiian waters, was recognized in Rice (1998)’s overview of marine mammal taxonomy, its unclear why this has not been fully recognized)
S. a. attenuata or offshore pantropical spotted dolphin, found worldwide in tropical waters
S. a. graffmani or coastal pantropical spotted dolphin, found in coastal waters in the eastern tropical Pacific.
The pantropical spotted dolphin regularly making large, splashy leaps from the sea. It is a common Whale surfacing behaviour and will often clear the water for a second or more. Bow-riding and other play with boats is common. In the eastern Pacific, they often swim with yellow fin tuna (causing the problem with dolphin deaths caused by tuna fishing, though they do not eat them). In fact, the two species have similar diets of small epipelagic fish. In other areas, the species may also feed on squid and crustaceans.
Hippopotamus are a fascinating animal. Large, highly aggressive, and spending most of their days in water. For many people, their memory of a Hippopotamus on safari (or in a zoo) is a pond with a grey bump in the middle. But there is far more to a hippopotamus than meets the eyes. Duromg the night, Hippo leave the safety of the water and go into the bush to graze.
They are incredibly dangerous, and there is a far higher risk for people wandering in the bush to be killed by hippo than anything else. In the past, they were one of the few species that still lived in significant numbers outside reserves. Unfortunately, as the human population of Africa has grown, the majority of these free roaming Hippo have been killed – for an African living on a tiny income, a hippo is a huge pile of meat, which can be sold, and some of its teeth are made of ivory.
A rough estimate suggests that the meat is worth around 8000. When you add in the Ivory teeth, it is possible for a Hippo carcass to be worth a years average salary (and that is the mean salary). 85% of Africans survive on $5.50 per day, which works out at almost exactly $2000 – so for 85% of Africans, a hippo carcass is worth 4 years of salary – assuming that you do not make much money from the ivory, and it would not be surprising if this added significantly.
When you look at these numbers, it is not surprising that people poach Hippos -and it makes it very hard to work out how to save them.
Of course, Hippo can be worth far more in tourism dollars over their lifespan.
Common hippopotamus are possible to see in all the Savannahs that we have listed so far. Visit wild places to see the total list.
Below is links to some of the biggest (though as I say, hippo can often be seen in small reserves and in places outside reserves as well. All our savannah wild places have sizable populations of common hippopotamus.