Topzle Topzle

Sun bear

Updated: Wikipedia source

Sun bear

The sun bear (Helarctos malayanus) is a bear species in the family Ursidae found in the tropical forests of Southeast Asia. It is the only species in the genus Helarctos and the smallest bear species, standing nearly 70 cm (28 in) at the shoulder and weighing 25–65 kg (55–143 lb). It is stockily built, with large paws, strongly curved claws, small, rounded ears and a short snout. The fur is generally short and jet black, but can vary from grey to red. The sun bear gets its name from its characteristic orange to cream-coloured chest patch. The sun bear's unique morphology with inward-turned front feet, flattened chest, powerful forelimbs with large claws suggests adaptations for climbing, and it is an excellent climber and the most arboreal of all bears. It sunbathes or sleeps in trees 2 to 7 m (6 ft 7 in to 23 ft 0 in) above the ground. It is mainly active during the day, though nocturnality might be more common in areas frequented by humans. It tends to remain solitary, but sometimes occur in pairs such as a mother and her cub. It does not hibernate, possibly because food resources are available the whole year throughout its range. It is an omnivore, and its diet includes ants, bees, beetles, honey, termites, and plant material such as seeds and several kinds of fruits; vertebrates such as birds and deer are also eaten occasionally. It breeds throughout the year; individuals become sexually mature at two to four years of age. Litters comprise one or two cubs that remain with their mother for around three years. The range of the sun bear is bounded by Northeast India to the north then south to southeast through Bangladesh, mainland Southeast Asia, Brunei and Indonesia. These bears are threatened by heavy deforestation and poaching for food and the wildlife trade. They are also harmed in conflicts with humans when they enter farmlands, plantations, and orchards. The global population is estimated to have declined by 35% since the 1990s. It is listed as vulnerable on the IUCN Red List.

Tables

· Taxonomy and phylogeny › Subspecies and distribution
Malayan sun bear (H. m. malayanus)
Malayan sun bear (H. m. malayanus)
Name
Malayan sun bear (H. m. malayanus)
Distribution
The Malayan sun bear occurs in mainland Southeast Asia, Bangladesh and Sumatra.
Description/Comments
Smallest member of the bear family.
Bornean sun bear (H. m. euryspilus)
Bornean sun bear (H. m. euryspilus)
Name
Bornean sun bear (H. m. euryspilus)
Distribution
The Bornean sun bear occurs only in Borneo.
Description/Comments
Its skull is smaller than that of the Malayan sun bear.
Image
Name
Distribution
Description/Comments
Malayan sun bear (H. m. malayanus)
The Malayan sun bear occurs in mainland Southeast Asia, Bangladesh and Sumatra.
Smallest member of the bear family.
Bornean sun bear (H. m. euryspilus)
The Bornean sun bear occurs only in Borneo.
Its skull is smaller than that of the Malayan sun bear.

References

  1. Anthropological Papers of the American Museum of Natural History
  2. Helarctos malayanus
    https://www.iucnredlist.org/species/9760/123798233
  3. Mammal Species of the World: A Taxonomic and Geographic Reference
    http://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=14000943
  4. Helarctos malayanus
    https://doi.org/10.1644%2F1545-1410%282002%29696%3C0001%3AHM%3E2.0.CO%3B2
  5. An Intermediate Greek–English Lexicon
    https://archive.org/details/intermediategree00lidd/page/n121
  6. A Visual Celebration of Borneo's Wildlife
    https://books.google.com/books?id=ld8bDQAAQBAJ&pg=PA323
  7. Transactions of the Linnean Society of London
    https://archive.org/details/mobot31753002433594/page/254/mode/1up
  8. Helarctos euryspilus
    https://archive.org/details/zoologicaljourna02lond/page/n269/mode/2up
  9. Helarctos
    https://archive.org/stream/checklistofindia00elle#page/240/mode/2up
  10. Helarctos malayanus
  11. Malaysian Wildlife
    https://malaysianwildlife.org/malayan-sun-bear-helarctos-malayanus/
  12. Ursus malayanus
    http://rmbr.nus.edu.sg/rbz/biblio/52/52rbz665-672.pdf
  13. Bulletin of the Raffles Museum
  14. Proceedings of the Zoological Society of London
  15. Journal of the Bombay Natural History Society
  16. Zoological Research
  17. Bears: Status Survey and Conservation Action Plan
    https://books.google.com/books?id=XXQ03uVmCAIC&pg=PA25
  18. Melursus ursinus
    https://doi.org/10.1111%2Fj.1748-1090.1969.tb02631.x
  19. American Museum Novitates
    https://web.archive.org/web/20200808050309/http://www.digitallibrary.amnh.org/bitstream/handle/2246/5474/N2635.pdf?sequence=1#page=3
  20. Evolution
    https://doi.org/10.1111%2Fj.1558-5646.1989.tb04228.x
  21. Biological Reviews of the Cambridge Philosophical Society
    https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.328.7194
  22. BMC Evolutionary Biology
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2151078
  23. BMC Evolutionary Biology
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2518930
  24. Molecular Phylogenetics and Evolution
    https://www.academia.edu/19518245
  25. BMC Evolutionary Biology
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2151078
  26. Bears: Status Survey and Conservation Action Plan
    https://portals.iucn.org/library/sites/library/files/documents/1999-004.pdf
  27. Scientific Reports
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5395953
  28. Bear Necessities: Rescue, Rehabilitation, Sanctuary, and Advocacy
    https://books.google.com/books?id=_gx5CgAAQBAJ&pg=PA17
  29. Bears: Status Survey and Conservation Action Plan
    https://books.google.com/books?id=XXQ03uVmCAIC&pg=PA219
  30. Helarctos malayanus
    https://archive.org/stream/PocockMammalia2/pocock2#page/n245/mode/2up
  31. Bears, Majestic Creatures of the Wild
    http://www.bearbiology.com/index.php?id=43
  32. Great Bear Almanac
    https://archive.org/details/greatbearalmanac00gary/page/340
  33. Journal of Wildlife Management
    https://ui.adsabs.harvard.edu/abs/2008JWMan..72..814S
  34. Meijaard, E. (1997). The Malayan sun bear on Borneo, with special emphasis on its conservation status in Kalimantan, Indonesia (Report). London: Tropendos Kalimantan Project and World Society for the Protection of Animals. pp. 1–51.
  35. Journal of Zoology
    https://doi.org/10.1111%2Fj.1469-7998.2006.00286.x
  36. Journal of Experimental Biology
    https://ui.adsabs.harvard.edu/abs/2023JExpB.226B5255V
  37. Helarctos malayanus
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5571478
  38. Ecological Informatics
    https://ui.adsabs.harvard.edu/abs/2014EcInf..20...27N
  39. Diversity and Distributions
    https://ui.adsabs.harvard.edu/abs/2013DivDi..19..700W
  40. Helarctos malayanus
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3480464
  41. Ursus
    https://doi.org/10.2192%2F1537-6176%282004%29015%3C0227%3ANOOPPU%3E2.0.CO%3B2
  42. Journal of Tropical Ecology
    https://doi.org/10.1017%2FS0266467405002622
  43. Helarctos malayanus
    https://doi.org/10.1017%2FS0030605317001089
  44. Ursus
    https://doi.org/10.2192%2F1537-6176%282005%29016%5B0130%3AHBCIEK%5D2.0.CO%3B2
  45. ZooKeys
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5027644
  46. Ursus
    https://doi.org/10.2192%2FURSUS-D-11-00009.1
  47. Endangered Animals of Thailand
    https://books.google.com/books?id=90BgNrt0CPkC&pg=PA313
  48. Helarctos malayanus
    https://web.archive.org/web/20130511153207/http://www.cfc.umt.edu/grizzlybearrecovery/pdfs/Wong%20et%20al.%20%202004.pdf
  49. Ursus malayanus
    https://archive.org/details/walkerscarnivore00nowa/page/n137
  50. Conservation Biology
    https://ui.adsabs.harvard.edu/abs/1993ConBi...7..623G
  51. Biodiversity and Conservation
    http://orca.cf.ac.uk/114621/1/Guharajan_Sun%20bear%20habitat%20use_06-18.pdf
  52. Scientific Reports
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6428817
  53. Smithsonian Magazine
    https://www.smithsonianmag.com/smart-news/sun-bears-mimic-each-others-facial-expressions-communicate-180971778/
  54. Ursus
    https://doi.org/10.2192%2FURSU-D-18-0022.2
  55. Travels in the East Asian Archipelago
    https://books.google.com/books?id=PAlJAAAAcAAJ&pg=PA510
  56. Raffles Bulletin of Zoology
    https://web.archive.org/web/20070811101110/http://rmbr.nus.edu.sg/rbz/biblio/53/53rbz165-168.pdf
  57. Animate Creation: Popular Edition of "Our Living World", a Natural History
    https://books.google.com/books?id=D7ohAQAAMAAJ&pg=PA324
  58. Bears: Status Survey and Conservation Action Plan
    https://portals.iucn.org/library/efiles/documents/1999-004.pdf
  59. Helarctos malayanus
    https://doi.org/10.2981%2Fwlb.00351
  60. Ursus
    https://www.researchgate.net/publication/251338929
  61. Helarctos malayanus
    https://doi.org/10.1111%2Fj.1095-8312.2006.00688.x
  62. Helarctos malayanus
    https://doi.org/10.1017%2FS0266467499000784
  63. Helarctos malayanus
    https://doi.org/10.1644%2F11-MAMM-A-108.1
  64. Helarctos malayanus
    https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.556.2474
  65. Trends in Ecology & Evolution
    https://doi.org/10.1016%2Fj.tree.2004.09.006
  66. Biogeosciences
    https://doi.org/10.5194%2Fbg-11-247-2014
  67. Biodiversity and Conservation
    https://doi.org/10.1007%2Fs10531-006-9075-0
  68. Raffles Bulletin of Zoology
  69. Endangered Species Research
    https://doi.org/10.3354%2Fesr01028
  70. Endangered Species Research
    https://doi.org/10.3354%2Fesr01028
  71. Ursus
    http://www.bearbiology.com/fileadmin/tpl/Downloads/URSUS/Vol_11/Meijaard_Vol_11.pdf
  72. Pills, powders, vials and flakes: the bear bile trade in Asia
    https://www.traffic.org/site/assets/files/2704/pills_powders_vials_and_flakes_report.pdf
  73. International Bear News
    https://www.researchgate.net/publication/318988031
  74. Helarctos malayanus
    http://ajcb.in/journals/full_papers_dec_12/8_Sethy_Chauhan%20_AJCB_1_2_103-109.pdf
  75. TRAFFIC Bulletin
    https://www.traffic.org/site/assets/files/3004/traffic_pub_bulletin_26_1_sun_bear_trade_sarawak_malaysia.pdf
  76. Sun bear fact sheet
    https://web.archive.org/web/20080827194607/https://nagonline.net/Fact%20Sheet%20pdf/AZA%20-%20Sun%20Bear%20Fact%20Sheet.pdf
  77. European Association of Zoos and Aquaria
  78. The Star
    https://www.thestar.com.my/News/Environment/2014/05/05/At-home-in-the-forest/
  79. "Sun Bears: Global Status Review and Conservation Action Plan 2019-2028"
    https://www.cpsg.org/sites/default/files/2024-05/Sun_bears_-_Global_status_review_conservation_action_plan_2019-2028_UNABRIDGED_B.pdf
Image
Source:
Tip: Wheel or +/− to zoom, drag to pan, Esc to close.