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Posts tagged “folivores

Endangered Species Monday: Alouatta belzebul.

redhandedhowler

Endangered Species Monday: Alouatta belzebul

This Monday’s endangered species article from the (Endangered Species Watch Post) focuses on the Red Handed Howler Monkey of which is listing near to endangerment. (Image Red Handed Howler Monkey) 

Generically identified as Alouatta belzebul back in 1766 by Professor Carl von Linnaeus (1707 – 10 January 1778), also known after his ennoblement as Carl von Linné was a Swedish botanist, physician, and zoologist, who laid the foundations for the modern biological naming scheme of binomial nomenclature.

Listed as vulnerable the species is endemic to Brazil (Alagoas, Maranhão, Pará, Paraíba, Pernambuco, Rio Grande do Norte, Sergipe and Tocantins). Populations are currently on the decline of which its very likely the species will be re-categorized as endangered within the next five years, if not sooner.

A. belzebul is said to be extremely common in some areas such as Marajó however is noted as rare within the Atlantic Forest portion of the range known as; Rio Grande do Norte, Alagoas, Paraíba and Pernambuco. Last survey census’s reported the species to be inhabiting at least ten isolated locations of which two hundred individuals remain in each plot.

International Animal Rescue Foundation Brazil have for the past three years been conducting surveys within the area will be submitted to the (IUCN). Furthermore the Environmental Protection Unit now re-based in Londrina are working with local communities, hunters and farmers within the A. belzebul range to preserve commonly known species of monkey, birds, amphibians and flora within the region.

IARFB are also currently conducting investigations to locate where sugar cane is being exported too and used within from the A. belzebul’s region. Its believed that America, Mexico, South America, and Europe are purchasing large sugarcane exports from the region. Tesco, J.S Sainsbury’s, Cooperative Food Group, Asda, Walmart, Woolworths and Spar have all been noted on suppliers exports from the regions. Aldi, Lidl, Quick-Save, Budgens have been ruled out. We are least impressed though with J.S Sainsbury’s name written on export documents of sugar cane from the region.

Within the ten isolated locations six populations are known to reside in Paraiba, two in Rio Grande de Norte, one in Pernambuco, and one in Alagoas. The largest population in the Atlantic Forest is in Pacatuba in Paraiba with about 80 animals. There have been five registered local extirpations from forest fragments in the last 50 years.

Little known conservation actions are under way within their endemic region and as explained populations are decreasing and nearing endangerment. A. belzebul is listed within the family of Atelidae which is one of the very first five of new recognized ‘new world monkeys’. Its quite likely that new sub-species of the Red Handed Howler Monkey may be located as well as newer species of ‘new world monkeys’ too within the coming years. Only five years ago did scientists locate over 100,000 new species within the Yasuni National Park, Ecuador so in reality anything is possible.

The Atelidae family host howler, spider, woolly and woolly spider monkeys (the latter being the largest of the New World monkeys). They are found throughout the forested regions of Central and South America, from Mexico to northern Argentina.

When the species is not foraging on the ground floor they can normally be found resting in the canopies of trees at a height of some sixty feet. Social groups normally consist of seven to twenty members that will host mature males, females juveniles and infants. Males normally take lead of the pack or (troop).

These large and slow-moving monkeys are the only folivores of the New World monkeys. Howlers eat mainly top canopy leaves, together with fruit, buds, flowers, and nuts. They need to be careful not to eat too many leaves of certain species in one sitting, as some contain toxins that can poison them.  Howler monkeys are also known to occasionally raid birds’ nests and chicken coops and consume the eggs.

redhandnew

Image: Adult Red Handed Howler Monkey. 

Howlers are the only New World primates which regularly include mature leaves in their diet, although softer, less fibrous, young leaves are preferred when they are available. Their folivory and ability to eat mature leaves is undoubtedly one of the keys to their wide distribution and the wide variety of vegetation types they inhabit.

Mature fruit is the other important food item, especially wild figs (Ficus) in many regions, but they also eat leaf petioles, buds, flowers (sometimes seasonally very important), seeds, moss, stems and twigs, and termitaria. The diet of two A. belzebul groups in the Caxiuanã National Forest was studied by Souza et al. (2002). They were largely folivorous but would switch to fruits whenever available, especially during the wet season.

Size:
Adult male weight 7.27 kg (n=27),
Adult female weight 5.52 kg (n=26)
Adult male weight 6.5-8.0 kg (mean 7.3 kg, n=27),
Adult female weight 4.85-6.2 kg (mean 5.5 kg, n=26) .

Threats

Listed on Cites Appendix II there are few threats associated with the species. Nevertheless they still remain and if left unchecked can rapidly increase placing the new world monkey in danger of extinction.

In the Amazon, the species is widespread, although they are hunted. The Amazon populations have suffered severely from forest loss throughout their range in southern Pará over the last decade. In the Atlantic Forest population, the major threat is the fragility of the remaining small forest patches to stochastic and demographic affects (habitat loss and fragmentation has been mainly due to sugar-cane plantations).

Please share and make aware the Red Handed Howler Monkey’s plight. Tip: Check sugar products from local shops and hypermarkets to ensure your not aiding the destruction of their natural habitat via your sugar purchase. Check your local candy and other shopping supplies. If necessary contact companies politely asking where they are obtaining the sugar products from. Never give up.

Thank you for reading. 

Dr Jose C. Depre. 

Environmental and Botanical Scientist. 

Chief Executive Officer 

 

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Endangered Species Friday: Ailurops ursinus

bearcus

Endangered Species Friday: Ailurops ursinus

A. ursinis was identified back in 1824 by Dutchman Dr Coenraad Jacob Temminck – (31 March 1778 – 30 January 1858) was a Dutch aristocrat, zoologist, and museum director. Listed as vulnerable the species is endemic to Indonesia on the island of Sulawesi of which there remains limited data on this rather fine specimen of marsupial that resides in the family phalangeridae. (Image: Young Bear cuscus)

Populations of the (Bear cuscus) as its commonly known continue to steadily decline even though there are limited – conservation measures in place protecting the species (There remains as yet no data on population size). The Bear cuscus has practically gone extinct within the Tangkoko-DuaSudara Nature Reserve of which a staggering 95% decline has been recorded within the region alone of which the primary threat within the nature reserve is hunting and trade for pets.

North Sulawesi has also seen a staggering decline identical to the population decreases documented within the Tangkoko-DuaSudara Nature Reserve too. Yet again hunting and the illegal pet trade are very much responsible, and may very well within the next five to ten years lead to a complete extinction occurring.

As much as I myself hate to say it I am pretty certain from viewing statistical data past and present that extinctions are going to occur even sooner than predicted. Should extinctions occur it proves yet again that poaching is having a disastrous effect onto just about every African and Asian species known.

Habitat loss and forest clearance are all playing a pivotal roll at decreasing populations of this beautifully attractive marsupial. As a conservation and botanical scientist sometimes I wonder to oneself why we even bother to help species of animals and flora when some governments show no support, or respect whatsoever in our quest to protect and serve. Then I remember, my children and their children’s heritage is just as important as mine and the teams fight to protect.

Bear cuscus are known as arboreal marsupials meaning, they mostly thrive and spend the majority of their peaceful and playful lives within trees and dense forest. Unfortunately these forests and trees are slowly dwindling in size primarily for land clearance to support local farms and communities and, not forgetting slash and burn activities. I cannot begin to imagine what these creatures think and feel when destructful and greedy humans destroy their homes and pastures.  The feeling of not-knowing-when such harm is to be inflicted must be terrorizing for them.

The genus contains the following single species that is known to be related to the Bear cuscus; Ailurops melanotis that inhabits the Salibabu Island listed as (critically endangered) and endemic to Indonesia on the island of Sulawesi. Typically found in undisturbed tropical lowland moist forests, this species does not readily use disturbed habitats, thus it is not usually found in gardens or plantations. It is a largely diurnal and as explained a arboreal species that is often found in pairs. Diet usually consists of a variety of leaves, preferring young leaves, and like many other arboreal folivores it spends much of its day resting in order to digest similar to the Koala bear of Australia.

salewesi

Image: Bear cuscus relaxing in the canopy of Tangkoko

The only known conservation actions that are taking place are within in few protected areas, that include: Tangkoko-DuaSudara Nature Reserve, Bogani Nani Wartabone National Park, Lore Lindu National Park, Morowali National Park, and a host of forest reserves. This species is nominally protected by Indonesian law. Unfortunately even though the species is protected the illegal pet trade still continues of which I myself have on many occasions located small pet shops in Indonesia selling Bear cuscus from rusty, cramped cages.

Threats

The species is threatened by habitat loss due to clearance of forest for small-scale agriculture and through large-scale logging. It is also heavily hunted by local people for food, and collected for the pet trade. Cuscus hunting forays are often planned before special occasions (e.g., birthday celebrations) in order to provide future guests with the greatly appreciated meat. (These inferences are based on some six months of residence among Alune villagers in 1993–95, which included participation in forest activities and standard ethnographic data collection.)

Thank you reading. 

Dr Jose C. Depre 

Environmental and Botanical Scientist. 

info@international-animalrescue-foundation.org.uk

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