COMPARATIVE TEMPORAL DISCOLOURATION OF DRY MUSEUM SPECIMENS OF MOUNTAIN BLACKEYE (Chlorocharis emiliae)

Authors

  • Mohamad Fizl Sidq Ramji
  • Mustafa Abdul Rahman

DOI:

https://doi.org/10.33736/bjrst.261.2011

Keywords:

plumage, museum specimens, colour scoring, fading, mountain blackeye

Abstract

Plumage colour studies using museum skins is one of the ways to understand species evolution and plumage polymorphism. The invaluable scientific information on a single historic specimen should be well-presented in the most regarded form of quality skin. However, aging plumage feathers are hypothetically susceptible to colour fading therefore doubting the relevant of using old specimens for plumage colour assessment. We examined the colour changes in 36 museum specimens by conducting series of Munsell colour scoring by comparing recent and old skins of mountain blackye (Chlorocharis emiliae), at Universiti Malaysia Sarawak (UNIMAS) and Sarawak Museum (SM). The year-gap of both sets of specimens ranged from 52 to 75 years. Eight plumage characters included in this study were crown, supercilium, auricular, mantle, rump, breast, belly and vent. The results revealed that the head (crown and auricular) and underparts (breast and vent) tend to fade extensively overtime compared to the upperparts. Therefore the results of this study support the earlier findings that aging plumage feathers are susceptible to colour fading.

References

Allsopp, D., Seal, K.J. & Gaylarde, C.C. (2004). Introduction to biodeterioration. 2nd edition. Cambridge : Cambridge University Press, pp. 233

https://doi.org/10.1017/CBO9780511617065

Armenta, J.K., Dunn, P.O. & Whittingham, L.A. (2008). Effects of specimen age on plumage colour. The Auk, 125: 803-808.

https://doi.org/10.1525/auk.2008.07006

Bennett, A.T.D., Cuthill, I.C., Partridge, J.C. & Norris, K.J. (1994). Sexual selection and the mismeasure of colour. American Naturalist, 144: 848-860.

https://doi.org/10.1086/285711

Bolund, E. (2009). Condition dependence and fitness consequences of sexual traits in zebra finches. Seewiesen, Germany, pp. 127

Bostrom, M. R. & Ritchison, G. (2006). Possible relationships between morphology, territory quality, and skin color of American Kestrels. Journal of Field. Ornithology, 77:392-398.

https://doi.org/10.1111/j.1557-9263.2006.00069.x

Burley, N.T., Price, D.K. & Zann, R.A. (1992). Bill colour reproduction and condition effects in wild and domesticated zebra finches. The Auk, 109: 13-23.

https://doi.org/10.2307/4088263

Davison G.W.H. (2001). Birds of Mount Kinabalu-Borneo. Kota Kinabalu: Natural History Publications (Borneo) Sdn. Bhd. And Koktas Sabah Berhad, Sabah. pp. 146

Gawin, D.F.A. & Rahman, M.A. (2005a). Analysis of external morphological characters in determining patterns of variation among Mountain Blackeye (Chlorocharis emiliae) populations in Borneo. In A. A. Tuen & I. Das (Eds), Wallace in Sarawak-150 years later. Proceedings of an International Conference on Biogeography and Biodiversity, July 13-15, (pp. 188-194) Kota Samarahan, Malaysia : Institute of Biodiversity and Environmental Conservation, University Malaysia Sarawak. PhD. thesis, Max Planck Institute of Ornithology,

Gawin, D.F.A. & Rahman, M.A. (2005b). Genetic variation among mountain blackeye (Chlorocharis emiliae) populations in Borneo. In L. Seng (ed). Proceedings of the International Conference on Natural Resources and Environmental Management. Sarawak Development Institute, pp. 395-404.

Gill, F.B. (1990). Speciation. Ornithology. New York. : W H. Freeman and Company, pp. 661

Gomez, D. & Voisin, J. (2002). Spectrometry validates subspeciation in the Kerguelen tern Sterna Virgata. Marine Ornithology, 30:19 - 24.

Grande, J. M., Negro, J. J. & Torres, M.J. (2004). The evolution of bird plumage colouration: A role for feather -degrading bacteria? Ardeola 51: 375-383.

Grill, C.P. & Rush, V.N. (2000). Analyzing spectral data: comparison and application of two techniques. Biological Journal of the Linnean society, 69: 121-138.

https://doi.org/10.1111/j.1095-8312.2000.tb01194.x

Harrison, T. (1955). The mountain black-eye (Chlorocharis): Ecology and Natural History. Sarawak Museum Journal, 6: 663-687.

Harrison, T. (1956). A new mountain black-eye (Chlorocharis) from North Borneo. Sarawak Museum Journal, 8; 516-521.

Mackinnon, J. & Phillipps, K. (1993). A field guide to the birds of Borneo, Sumatra, Java and Bali. Oxford: Oxford University Press, pp. 491

Mees, G.F. (1955). The mountain black-eye (Chlorocharis): Ecology and Natural History. Sarawak Museum Journal, 6: 663-687.

Miskimen, M. (1980). Red-winged blackbirds: Pigmentation in epaulet of females. Ohio Journal of Science, 80 (5): 236.

Proctor, N.S. & Lynch, P.J. (1993). Manual of Ornithology. Avian Structure and Function. New Haven and London Yale University Press, pp. 340

Price, T.D. (2006) Review: Phenotypic plasticity, sexual selection and the evolution of colour patterns. The Journal of Experimental Biology, 209: 2368-2376.

https://doi.org/10.1242/jeb.02183

Smythies, B.E. (1999). The birds of Borneo fourth edition. Kota Kinabalu : Natural History Publications (Borneo) Sdn. Bhd., pp. 853

Steinheimer, F.D. (1999). The Mountain Blackeye (Chlorocharis emiliae) as a rhododendron flower visitor on Mount Kinabalu, Sabah, Malaysia. Forktail, 15: 100-101.

Stevens, M., Stoddard, M.C. & Higham, J.P. (2009). Studying primate colour: Towards visual system-dependant methods. International Journal of Primatology, 30: 893-917.

https://doi.org/10.1007/s10764-009-9356-z

Vanderwerf, E.A. (2001). Two year delay in plumage of male and female 'Elepaio'. The Condor, 103: 756-766.

https://doi.org/10.1093/condor/103.4.756

Winker, K. (2000). Obtaining, preserving, and preparing bird specimens. Journal of Field Ornithology, 71: 250-297.

https://doi.org/10.1648/0273-8570-71.2.250

Wood, D.L. & Wood, D.S. (1972). Numerical colour specification for bird identification: Iris colour and age in fall migrants. Bird Banding, 43 (3): 182-190.

https://doi.org/10.2307/4511877

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Published

2016-06-29

How to Cite

Ramji, M. F. S., & Rahman, M. A. (2016). COMPARATIVE TEMPORAL DISCOLOURATION OF DRY MUSEUM SPECIMENS OF MOUNTAIN BLACKEYE (Chlorocharis emiliae). Borneo Journal of Resource Science and Technology, 1(1), 38–45. https://doi.org/10.33736/bjrst.261.2011

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General