Note4Students
From UPSC perspective, the following things are important :
Prelims level: Mauritian Dodo
Mains level: NA
Central Idea
- Mauritian authorities are now working to resurrect the human-caused extinct bird ‘Dodo’.
About Mauritian Dodo
Details | |
Scientific Name | Raphus cucullatus |
Physical Characteristics | Large, flightless bird; about 1 meter tall, weighing 10-18 kg; large beak, stubby wings. |
Habitat | Endemic to Mauritius, an island in the Indian Ocean; lived in forests and possibly coastal areas. |
Discovery and Extinction | Discovered by Dutch Colonist in late 16th century; extinct by the late 17th century, last sighting around 1662. |
Causes of Extinction | Human hunting and introduced species like rats, pigs, and monkeys. |
Diet | Likely fruits, nuts, seeds, bulbs, and possibly small animals. |
Behavior | Exhibited no fear of humans due to lack of natural predators. |
Cultural Impact | Symbol of extinct and endangered species; featured in the phrase “as dead as a dodo.” |
Representation | Depicted in literature and art, notably in Lewis Carroll’s “Alice’s Adventures in Wonderland.” |
Science of De-Extinction
- Genetic Blueprint: The first step in de-extinction is obtaining a complete and accurate genome of the species.
- Genome Sequencing: Paleo-geneticists have successfully sequenced the dodo’s genome using DNA from a museum specimen.
- Comparative Genomics: The dodo’s genome is being compared with that of its closest extinct and extant relatives to identify unique dodo traits.
Process of Resurrecting
- Editing Genetic Material: The project involves editing the primordial germ cells (PGCs) of the Nicobar pigeon, the dodo’s closest living relative, to express dodo traits.
- Interspecies Surrogacy: These edited PGCs will be inserted into chicken embryos, with chickens acting as interspecies surrogates to potentially birth a dodo offspring.
- Physical Resemblance: The aim is to create a bird physically indistinguishable from historical accounts of the dodo.
Challenges and Concerns
- Scientific Hurdles: Experts emphasize the complexity of recreating a species and the time required for selective breeding to achieve dodo-like characteristics.
- Habitat Restoration: Mauritius’ transformed landscape poses challenges for reintroducing the dodo, necessitating the control or removal of invasive species.
- Alternative Habitats: The project considers reintroducing dodos to more pristine, uninhabited islands like Round Island and Aigrettes.
Motivations behind the Project
- Ecosystem Restoration: Reintroducing the dodo could help restore mutualistic relationships in Mauritius’ ecosystem, particularly in seed dispersal.
- Conservation Technology: The techniques developed could aid in conserving and restoring other endangered avian species.
- Symbolic Value: The project is driven by a desire to create ‘conservation optimism’, using the dodo as a symbol of hope in the face of human-caused extinctions.
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