They're Breaking the Species Barrier

The video explores the phenomenon of hybridization in the animal kingdom, highlighting that it is not always human-induced. It discusses various wild hybrids, such as the Narluga (a mix of beluga and narwhal), polar grizzly hybrids, Galapagos iguana hybrids, blacktip shark hybrids, and Mallard duck hybrids. These examples illustrate how hybridization can occur naturally, sometimes leading to new species, and how environmental changes can influence these processes. The video emphasizes the importance of understanding hybridization to gain insights into evolutionary pressures and species adaptation.

What is a common misconception about hybridization?

• It never happens in the wild.

• It only occurs in captivity.

• It can lead to new species.

• It is always beneficial.

What unique feature did the Narluga inherit from the narwhal?

• A spiraled tusk

• Grooved teeth

• A long tail

• A dorsal fin

What is a Narluga?

• A hybrid between a narwhal and a beluga whale

• A hybrid between a narwhal and a seal

• A hybrid between a narwhal and a dolphin

• A hybrid between a beluga whale and a dolphin

What is the primary diet of a Narluga?

• Fish from open water

• Sediment surface organisms

• Deep-sea squid

• Plankton

What environmental factor has increased the likelihood of Pizzly bears?

• Deforestation

• Climate change

• Urban expansion

• Pollution

What is a Pizzly bear?

• A hybrid between a grizzly bear and a black bear

• A hybrid between a polar bear and a brown bear

• A hybrid between a polar bear and a grizzly bear

• A hybrid between a polar bear and a panda

Where do marine iguanas primarily feed?

• In freshwater lakes

• In the air

• In the ocean

• On land

What is unique about the hybridization of Galapagos iguanas?

• They can reproduce with any lizard species

• They are the only iguanas that hybridize

• They have been separate for millions of years

• They only hybridize in captivity

What is a significant threat to Modeled Ducks due to Mallard hybridization?

• Climate change

• Loss of habitat

• Genetic dilution

• Increased predation

How many hybrid combinations have been documented with Mallard ducks?

• 50

• 25

• 10

• 39