Gibbons not only include the most endangered apes but also the most endangered primate species of the world. Management and conservation of hoolock gibbons.— Hoolock gibbons have survived in Bangladesh in spite of acute deforestation pressure (Ahsan 2001, Feeroz 2001, Islam et al. 53 new species should be categorized as Endangered under IUCN criteria. The western hoolock gibbon ( Hoolock hoolock) is a primate from the gibbon family, Hylobatidae. Endangered or Critically Endangered Species include: the Endangered Western hoolock gibbon (Hoolock hoolock), the Endangered Asian elephant (Elephas maximus), and the Critically Endangered Chinese pangolin (Manis pentadactyla). western hoolock gibbons singing are monogamous and live in small family groups (2 - 5 individuals) with the adult male and female and their offspring. All gibbon species have undergone massive declines in population size primarily due to habitat destruction and alteration. Approximately 300 remain in Bangladesh in populations dispersed between isolated forest fragments. H. hoolock. Table 3 compares the population estimates from Gittins (1984) to corresponding count data from Islam et al. We used part of this count data (22 sites) in our analyses to explore the link between hoolock gibbon numbers and habitat variables, since the information on all the variables being considered were not available for all 35 sites (Table 1). We are grateful to the Forest Department of the Government of Bangladesh for access and accommodation at many of the study sites. Hoolock hoolock. We compiled a list of all the plant species whose leaves, shoots, fruits, flowers are reported to be eaten by hoolock gibbons from Islam and Feeroz (1992), Ahsan (1994), and FD/MOEF (2000a). J Trop Ecol 7(1):147-53. All known populations have undergone declines primarily due to habitat destruction or alteration. Areas such as Patharia, Adampur, and Cox's Bazar (North), by contrast, have undergone drastic reductions in the “natural forests” leading to corresponding reductions in their hoolock gibbon populations. If it appears incomplete or if you wish to see article references, visit the rest of its contents, Eight Inexpensive Ways You Can Help Endangered Species. This fascinating primate species is also found in the southern ranges of the Khasi Hills (community forests near Mawsynram) and Jaintia Hills. If you do not receive an email within 10 minutes, your email address may not be registered, Wildlife enthusiasts who visit the … Habitat suitability of the Asiatic elephant in the trans-boundary Patharia Hills Reserve Forest, northeast India. The alteration of habitat for agriculture is widespread in Bangladesh and constitutes one of the most difficult challenges in wildlife conservation. Stops were made every 10 min to listen for calling hoolock gibbons or to scan the canopy for hoolock gibbons. (2004) have all speculated that closed‐canopy structure and diversity of fruiting trees are perhaps the most important determinants of hoolock gibbon population size in the sites where they are still present. Search for an endangered species profile. Each site also had an abundant variety of tree species utilized by hoolock gibbons for food. All known populations have undergone declines primarily due to habitat destruction or alteration. Trees in Lawachara were generally smaller compared to those in Kaptai. 1987, MacKinnon & MacKinnon 1987, Mootnick et al. The species is further sub-divided into the western and eastern hoolock gibbon. We also analyzed the existing habitat characteristics in two of the largest hoolock gibbon populations in Bangladesh: Lawachara (42 individuals) and Kaptai (84 individuals). Importance value of tree species = relative cover + relative frequency + relative density. Relative cover = mean basal area per hectare. 2006). 2004, 2006) and the reduction of edible plant species richness could be an important force driving these local extinctions. The Lawachara National Park in Moulvibazar, ... Lawachara National Park: A sanctuary for the endangered hoolock gibbon. Gaoligong, endangered 57 species The efforts for conservation of hoolock gibbon has been funded by US Fish Wildlife Service (Great Ape Conservation Fund). Population and habitat viability assessments suggest that these and some other sites could be managed to maintain hoolock gibbon numbers at viable levels (Molur et al. ( Harlan, 1834) Western hoolock gibbon range. The eastern hoolock gibbon (Hoolock leuconedys) male can be differentiated from the western species (Hoolock hoolock) by its grizzled silver coloured chest; a silver genital tuft and the white brow streaks are widely separated in adult males and juveniles of both sexes instead of being Fruits and flowers of A. chapalasha constitute an important component of the diet of hoolock gibbons and the higher representation of this species is of great significance to hoolock gibbon persistence in degraded areas (Ahsan 2001, Feeroz 2001, Islam et al. These habitat characteristics can simply be regarded as baseline information on the current conditions under which hoolock gibbons seem to be thriving. 2006). Hoolock gibbons (Hoolock hoolock) are endangered small apes occurring in Bangladesh, India, Myanmar, and south China.All known populations have undergone declines primarily due to habitat destruction or alteration. The western hoolock gibbon (Hoolock hoolock) is a globally threatened species, and in Bangladesh it is critically endangered. About 200 animals are thought to exist in China as well as an unknown number in Myanmar. In Arunachal Pradesh, villagers are helping the endangered hoolock gibbon swing from tree to tree In an Arunachal Pradesh village, locals are planting a corridor of gibbon-friendly trees in a bid to conserve the arboreal species in their natural habitat. Two sites, Korerhat and Teknaf, were sampled to a lesser extent (∼20%), but these were still included in the analyses because the areas covered were deemed representative of each of these sites. Are you inspired by endangered animals? 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