Albinistic common seals ( Phoca vitulina ) and melanistic grey seals ( Halichoerus grypus ) rehabilitated in the Netherlands

  title={Albinistic common seals ( Phoca vitulina ) and melanistic grey seals ( Halichoerus grypus ) rehabilitated in the Netherlands},
  author={Nynke Osinga and Pieter ‘t Hart and Pieter Vader},
  journal={Animal Biology},
The Seal Rehabilitation and Research Centre (SRRC) in Pieterburen, The Netherlands, rehabilitates seals from the waters of the Wadden Sea, North Sea and Southwest Delta area. Incidental observations of albinism and melanism in common and grey seals are known from countries surrounding the North Sea. However, observations on colour aberrations have not been systematically recorded. To obtain the frequency of occurrence of these colour aberrations, we analysed data of all seals admitted to our… 
5 Citations

Figures from this paper

Striping patterns may not influence social interactions and mating in zebra: Observations from melanic zebra in South Africa

Colouration serves many functions in animals including crypsis, aposematism, mimicry, intraspecific communication, communication between species and thermoregulation (Caro, Caswell Stoddard, &

It's not all black and white: investigating colour polymorphism in manta rays across Indo-Pacific populations

The results suggest that melanism is not under selection by predation in the tested M. alfredi populations, and that frequency differences across populations of both species are a consequence of neutral genetic processes.

How small could a pup sound? The physical bases of signaling body size in harbor seals

It is found that, while body growth puts anatomical constraints on how vocalizations are filtered by harbor seals’ vocal tract, no such constraints appear to exist on vocal folds, at least during puppyhood.

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

This report presents an opportunistic observation of leucism in an Antarctic Fur Seal, Arctocephalus gazella, from Peninsula Coppermine, in Robert Island, South Shetland Islands, Antarctica, the first confirmed record of a leucistic fur seal on this island.



Rare piebald and partially leucistic Antarctic fur seals, Arctocephalus gazella, at Cape Shirreff, Livingston Island, Antarctica

We document five cases of unusual colouration in Antarctic fur seals, Arctocephalus gazella, at Cape Shirreff, Livingston Island, from 1991–1992 to 2005–2006 austral summer seasons. This is the first

Leucistic southern elephant seal at Marion Island

A light coloured female southern elephant seal juvenile (Mirounga leonina) observed twice at Marion Island in August 2008 and confirmed that it was leucistic rather than albinistic, the first confirmed case of leucism in this species.

Leucistic Antarctic fur seals at Bouvetøya

The prevalence of this colour morph in the abundant populations of the Scotia Arc may be due to founder effect, as at least one leucistic animal was present at South Georgia when the Antarctic fur seal was close to extinction.

Oculocutaneous albinism

Diagnosis is based on clinical findings of hypopigmentation of the skin and hair, in addition to the characteristic ocular symptoms, and molecular diagnosis is necessary to establish the gene defect and OCA subtype.

Another Phocine Distemper Outbreak in Europe

The seal population of Northern Europe was able to recover from the 1988 phocine distemper epidemic that killed about 18,000 seals. However, starting at the beginning of May 2002, unusually high

Leucistic South American sea lion in Chile, with a review of anomalously color in otariids

Las coloraciones anormales en los mamiferos marinos ocurren en muy baja frecuencia. Estas coloraciones atipicas son clasificadas como albinismo, melanismo y leucismo, siendo esta ultima coloracion

Genetics of hair and skin color.

  • J. Rees
  • Biology
    Annual review of genetics
  • 2003
It is argued that given advances in model systems, increases in technical facility, and the lower cost of genotype assessment, the lack of standardized phenotype assessment is now a major limit on advance.

Comprehensive analysis of oculocutaneous albinism among non-Hispanic caucasians shows that OCA1 is the most prevalent OCA type.

This study demonstrates that, contrary to long-held clinical lore, OCA1, not OCA2, is by far the most frequent cause of OCA among Caucasian patients.