SIAL’E TOFUA’A HINEHINA ~ White flower~ White humpback
After several observations of the young whale eyes we can now confirm that the calf is a female and it is indeed an Albino whale. Soon she will embark on her first long journey (7,000 km) south to Antarctica where she will stay with her mom for up to two years and will hopefully return to Tonga in a few years once she is ready to mate and give birth.
White animals are rare in the wild, and white humpback whale sightings are even more rare. Only our were recorded.
Without protective coloration, unless they’re in an arctic environment, they are more vulnerable to attack and the harsh sun.
Leucism and albinism are often difficult to tell apart in animals since the conditions share some of the same characteristics. While albinism refers to the complete lack of melanin—the natural pigment that gives skin, feathers, hair, and eyes their color—leucism involves a partial loss of pigmentation.
Animals with albinism are white or pale in color over their entire bodies but also have eyes that are pale, pink, or red in color, while animals with leucism often have partially white or patchy features with darker eyes. These inherited genetic traits are all recessive and must be inherited from both parents (who don’t necessarily have to have albinism themselves). Animals have been observed excluding members of their group with albinism to avoid predation of the entire population
Animals that are white in color are often mistaken for having albinism when they actually have leucism. Often, the simplest way to tell animals with leucism apart from albinism is to look at the eyes. Animals with leucism will have dark-colored eyes rather than red or pink.
Albinism is an extremely rare condition in wildlife that occurs at birth. Researchers estimate the rate of albinism in animals to be anywhere from 1 in 20,000 to 1 in 1 million, though it’s believed to be more common in bird, reptile, and amphibian species
Sperm Whales Have an “Eve”
New research reveals that every sperm whale in the world can be traced to a single female
All of the sperm whales in the world descended from just one female who lived tens of thousands of years ago. That surprising result comes from an examination of the mitochondrial DNA of more than 1,600 sperm whales from all over the world. Fittingly, researchers have named her Eve.
Mitochondrial DNA is only passed from mother to child. The fact that Eve’s DNA has been found all over the world opens up additional questions. Today, only male sperm whales travel far from where they are born. Females tend to stay put, so Eve’s mitochondrial DNA should have as well. But, for some reason, it didn’t.
The new genetic study also reveals that the current lack of female sperm whales migrating puts a limit on genetic flow for the species—an issue in the face of anthropogenic climate change and other threats, which are isolating sperm whales into smaller, geographically isolated sub-populations. Populations in Eve’s time may have been more able to mingle with each other over time. That opportunity is now no longer available.
This suggests that management strategies for sperm whales may need to prioritize females, not necessarily populations as a whole. If all of the females in a given location die out, it now appears unlikely that any new females would migrate to replace them.
What this study has introduced is another reason why it is so important to protect females if we want to conserve a population.
Source: Hakai, John R. Platt, Alana Alexander, NOAA.
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