Ocular anatomy and pathology in Lumholtz's tree-kangaroo (Dendrolagus lumhotzi)

Shima, Amy L., Johnson, Linda K., Skerratt, Lee F., and Zeiss, Caroline (2020) Ocular anatomy and pathology in Lumholtz's tree-kangaroo (Dendrolagus lumhotzi). Journal of Zoo and Wildlife Medicine, 51 (4). pp. 868-878.

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View at Publisher Website: https://doi.org/10.1638/2019-0203
 
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Abstract

Lumholtz's tree-kangaroo (Dendrolagus lumhobzi) is one of two species of tree-kangaroos found in Queensland, Australia. There is little information about ocular anatomy and pathology in any species of tree-kangaroo, and there are claims of blindness from unknown causes in free-ranging Lumholtz's tree-kangaroos. This study investigated ocular anatomy and pathology in 80 individuals, using examination of 31 live animals and histopathologic examination of eyes from 49 carcasses. Tree-kangaroos were found to have a typical vertebrate eye with immuno-histochemical evidence for dichromatic color vision. Only 5.4% of animals had evidence of pathology from traumatic injury, infection, or a variety of nonspecific lesions. Toxoplasmosis was implicated in ocular lesions in three animals. This study did not find evidence of widespread blindness in free-ranging animals nor evidence of toxic optic neuropathy. Examinations of live animals highlighted the need to establish normal ocular examination parameters and vision testing protocols suitable for use in tree-kangaroos and the need for more comprehensive examination and testing of animals thought to have vision loss of unknown origin.

Item ID: 66138
Item Type: Article (Research - C1)
ISSN: 1937-2825
Copyright Information: (C) Journal of Zoo and Wildlife Medicine.
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This journal does not appear to have an open access policy.

Funders: Holsworth Wildlife Research Endowment, Wet Tropics Management Authority, Skyrail Rainforest Foundation
Date Deposited: 17 Feb 2021 18:29
FoR Codes: 31 BIOLOGICAL SCIENCES > 3109 Zoology > 310911 Animal structure and function @ 70%
30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3009 Veterinary sciences > 300902 Veterinary anatomy and physiology @ 30%
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