AI Article Synopsis
- - A rare, critically endangered adult angular rough shark was captured, displaying unusual pale coloration with white-greyish patches due to partial pigmentation reduction, identifying it as leucistic.
- - This case marks the first recognized instance of leucism in this species and the first reported color disorder in the Oxynotidae family.
- - Despite its unusual appearance, the shark's overall health was unaffected, indicating that pigment disorders in deep-sea sharks may not impact their survival or growth, with no significant differences noted when compared to a normally pigmented shark of the same sex from the same region.
Article Abstract
The capture of a rare, critically endangered adult angular rough shark, Oxynotus centrina (Linnaeus, 1758), with abnormal coloration is reported in this paper. The shark exhibited a partial reduction in pigmentation, resulting in an overall pale appearance with white-greyish patches. Since the retinal pigmentation appeared normal, the shark was considered leucistic. This represents the first documented case of leucism in this species and the first colour disorder reported in the family Oxynotidae Gill, 1912. Despite the atypical appearance, the physical health of the shark seemed unaffected, supporting the notion that pigment disorders in deep-sea sharks do not inherently impair survival and growth. Full morphometric characteristics are presented and compared with those of a normal individual of the same sex caught in the same area, showing no differences.
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| http://dx.doi.org/10.1111/jfb.15962 | DOI Listing |
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