Yinhla D. Shihlomule, Eleanor A. Weideman, J. S. Fredrik van der Vyver, Danielle S. Conry, Rowan K. Jordaan, P. J. Nico de Bruyn
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引用次数: 0
Abstract
We report on an occurrence of ocular albinism in sub-Antarctic fur seal (Arctocephalus tropicalis) pups born on Marion Island, Prince Edward Archipelago. While previous observations have documented pups with atypical lanugo pelage colorations, this is the first case involving hypopigmentation of both fur and other tissues, including the eyes and nails. During the austral summer of 2021/22, we encountered four sub-Antarctic fur seal pups displaying this anomalous pigmentation. These anomalous individuals were found along two beaches on the island’s western side and one beach on the eastern side during an island-wide fur seal census. Although the characteristics observed strongly suggest ocular albinism, confirmation would be necessary through genetic analyses. The absence of melanin in mammalian eyes is known to compromise visual acuity, which may likely result in reduced survival beyond the weaning period, explaining the paucity of such adults in this well-observed population.
期刊介绍：
Polar Biology publishes Original Papers, Reviews, and Short Notes and is the focal point for biologists working in polar regions. It is also of interest to scientists working in biology in general, ecology and physiology, as well as in oceanography and climatology related to polar life. Polar Biology presents results of studies in plants, animals, and micro-organisms of marine, limnic and terrestrial habitats in polar and subpolar regions of both hemispheres.
Taxonomy/ Biogeography
Life History
Spatio-temporal Patterns in Abundance and Diversity
Ecological Interactions
Trophic Ecology
Ecophysiology/ Biochemistry of Adaptation
Biogeochemical Pathways and Cycles
Ecological Models
Human Impact/ Climate Change/ Conservation
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