10 thoughts on “Antarctic whaling made Adélie penguins switch to krill

  1. Tuesday 24th July, 2007

    Global warming threatens survival of cold-blooded Antarctic marine animals
    ANI Tuesday 24th July, 2007

    Washington, July 24 : A limpet no bigger than a coin could reveal the possible fate of cold-blooded Antarctic marine animals, according to new research published this week in The Journal of Experimental Biology.

    Compared to their temperate and tropical cousins, cold-blooded polar marine animals are incapable of fast growth.

    Until now scientists had assumed that a lack of food in winter was the major limiting factor.

    But now, studies of the protein-making abilities of limpets in both the sea around the British Antarctic Survey’s (BAS) Rothera Research Station and in the laboratory aquarium has shown that these animals cannot make proteins – the building blocks of growth – efficiently.

    Growth in animals occurs primarily by making and retaining proteins.

    But, while the tropical water limpets typically retain 70 percent of the proteins they make, those in the Antarctic appear only to retain about 20 percent.

    According to lead author Dr Keiron Fraser from BAS, the findings are an important step in understanding the complex biodiversity of Antarctica’s unique ecosystem.

    “Sea temperature is predicted to increase by around 2 degree C in the next 100 years. If cold-blooded Antarctic animals can’t grow efficiently, or increase their growth rates, they are unlikely to be able to cope in warmer water, or compete with species that will inevitably move into the region as temperatures rise,” said Dr Keiron.


  2. Pingback: Antarctic warming damages Adélie, chinstrap penguins | Dear Kitty. Some blog

  3. Pingback: Wildlife of the Antarctic Peninsula | Dear Kitty. Some blog

  4. Pingback: Blue whales, new research | Dear Kitty. Some blog

  5. Pingback: Emperor penguin chicks video | Dear Kitty. Some blog

  6. Pingback: Blue whales, new research | Dear Kitty. Some blog

  7. Pingback: Antarctic leopard seals, new research | Dear Kitty. Some blog

  8. Pingback: Giant penguin fossils discovered | Dear Kitty. Some blog

  9. Pingback: Videos on Antarctic animals | Dear Kitty. Some blog

  10. Pingback: Whaling, terrible for whales, benefited some birds | Dear Kitty. Some blog

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.