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Leucistic Antarctic fur seal (Arctocephalus gazella) at Robert Island, South Shetland Islands, Antarctica, with a note on colour morph nomenclature

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Abstract

Fur chromatic disorders, which include albinism, leucism and melanism, are rare in mammals. Worldwide these atypical cases are naturally infrequent and poorly reported in the literature, particularly in pinnipeds. The knowledge available about colouration in mammals comes from studies in mice and other domestic mammals. Generally this information is homologous to most mammals. However, adaptive interpretation of atypical colouration patterns in pinnipeds and its biological relevance are uncertain. Hence, this report is indirect evidence of a source of misunderstood genetic variability for this group of carnivores. Here, we present an opportunistic observation of leucism in an Antarctic Fur Seal, Arctocephalus gazella, from Peninsula Coppermine, in Robert Island, South Shetland Islands, Antarctica. A young male with a leucistic dilute phenotype was recorded on February 5th, 2013. This is the first confirmed record of a leucistic fur seal on this island. Additionally, we provide some general comments on the nomenclature used for colour morphs.

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Acknowledgements

We want to thank Rosa Jijón for taking the picture of the leucistic specimen, and Daniela Cajiao for providing it to us. We also want to thank Santiago F. Burneo for drawing the map included in Fig. 2. We acknowledge the Instituto Antartico Ecuatoriano (INAE) for funding and logistical support for the development of this research. We thank the staff of the Maldonado Base for their support that makes our stay pleasant and fruitful in Antarctica. We also thank Brian McLaren for reviewing and editing the English version.

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Authors and Affiliations

  1. Departamento de Estudios Ambientales, Universidad Simón Bolívar, Av. Principal Sartenejas, Caracas, Venezuela

    Víctor Romero

  2. Museo de Zoología, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre y Roca, Quito, Ecuador

    Diego G. Tirira

  3. Fundación Mamíferos y Conservación, Quito, Ecuador

    Diego G. Tirira

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  1. Víctor Romero
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  2. Diego G. Tirira
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Correspondence to Víctor Romero.

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Romero, V., Tirira, D.G. Leucistic Antarctic fur seal (Arctocephalus gazella) at Robert Island, South Shetland Islands, Antarctica, with a note on colour morph nomenclature. Polar Biol 40, 1893–1897 (2017). https://doi.org/10.1007/s00300-016-2069-9

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