TagUlysses Lazarus

Study confirms virgin birth of zoo shark pup

Remember a few years ago when we reported a shark that was born to a virgin mother? Here’s an update:

Scientists have solved the mystery of how a baby shark appeared in a tank of females without the help of a male: it was a virgin birth. The bonnethead shark was born through “parthenogenesis”, a process where an egg develops into an embryo without being fertilised by sperm.

Virgin births, possible in some birds, amphibians, reptiles and bony fishes, are extremely rare. It had never before been confirmed in cartilaginous fish, such as sharks and rays. The birth, in 2001, astonished scientists as placental animals, including this shark, were thought to need genetic material from sperm and egg to produce viable young.

Full Story: The Guardian.

(Thanks Ulysses Lazarus).

Moral dilemma? Brain tells right from wrong

It’s wartime, and an enemy doctor is conducting painful and inevitably fatal experiments on children. You have two kids, ages 8 and 5. You can surrender one of them within 24 hours or the doctor will kill both. What is the right thing to do?

For most people, this scenario based on one in William Styron’s novel Sophie’s Choice is almost an impossible dilemma.

But for a group of people with damage in a part of the brain’s frontal lobe that helps govern emotions, the decision is far clearer. They would allow one child to die.

Scientists say a study involving these people has produced unique insights into the brain mechanics of moral decision making and shows that in some key situations emotions play a fundamental role in moral judgements.

Full Story: ABC (Australia).

(Thanks Ulysses Lazarus!)

(see also: Re-Thinking Disorders).

Chimpanzees ‘hunt using spears’

Chimpanzees in Senegal have been observed making and using wooden spears to hunt other primates, according to a study in the journal Current Biology.

Researchers documented 22 cases of chimps fashioning tools to jab at smaller primates sheltering in cavities of hollow branches or tree trunks.

Full Story: BBC.

(Thanks Ulysses Lazarus).

Who’s side will they be on in the Human-Elephant Conflict?

© 2021 Technoccult

Theme by Anders NorénUp ↑