Creature
Fast Facts
Introducing you to extinct species.
THE RODRIGUES
DAY GECKO
1. The Rodrigues day gecko, Phelsuma edwardnewtoni, also called the Rodrigues blue-dotted day gecko, lived in the trees of Rodrigues Island and several small surrounding islands in the Indian Ocean. 2. The Rodrigues day gecko ate insects, nectar, and other day geckos including the extinct Rodrigues giant day gecko, Phelsuma gigas. 3. Some plants on Rodrigues co-evolved with the geckos, creating colored nectar that attracted the two extinct day geckos to aid them in pollination. 4. The Rodrigues day gecko was diurnal, while its giant counterpart was nocturnal helping plants pollinate during the day and night. 5. It was originally named Phelsuma newtoni by Boulenger in 1884, but that name was sometimes used to refer to the giant day gecko, so it was changed. 6. It had a length of 9.1 inches. The body color was bright green, but varied (see Legaut’s account below) with blue spots on the dorsal (back) side. The ventral (under) side was whitish-yellow. Its chin was a deep yellow. 7. There are 6 preserved specimens of the Rodrigues day gecko which are house in museums in London and Paris 8. They were described as “quite common” and were noted to even eat fruit out of one's hand. 9. They were a favorite food of island birds like the bitterns. 10. The Rodrigues day gecko was last seen in 1917. 11. Leguat described his encounters with the Rodrigues day gecko in the following account, “The Palmtrees and Plantanes are always loaden with Lizards about a foot long, the Beauty of which is very Extraordinairy; some of them are blue, some black, some green, some red, some grey, and the colour of each the most lively and bright of any of its kind. Their common Food is the Fruit of the Palm-Trees. They are not mischievous, and so Tame, that they often come and eat the Melons on our Tables, and in our Presence, and even in our Hands; they serve for Prey to some Birds, specially the Bitterns. When we beat 'em down from the Trees with a Pole, these Birds wou'd come and devour them before us, tho' we did our utmost to hinder them; and when we offered to oppose them, they came on still after their Prey, and still followed us when we endeavoured to defend them.”
Extinction
Cometh
Facing the light at the end of the tunnel
EXTINCTION DATE
1917
The Rodrigues day gecko was common on Rodrigues before people arrived. These foot long geckos preferred to live in trees, especially the Latin palms. Their diet was reported to have consisted of insects and invertebrates, but its favorite food was soft fruit and nectar. This made the Rodrigues day gecko and its giant gecko counterpart extremely important to the distribution of pollen throughout the island. The Rodrigues day geckos pollinated plants during the day and the Phelsuma gigas pollinated plants at night which led to a healthy ecosystem on the island. The Rodrigues day gacko’s extinction began with the arrival of people and the invasive species brought with them. It was a slow process. Rodrigues wasn’t colonized until over 700 years after it was known to exist in the Indian Ocean. In the 900’s, the Mascarene Islands were first described on Arabic maps. They called Rodrigues,“Desert Island” or Diva Harab (ديفا هاراب). Rodrigues was named after Portuguese explorer Diogo Rodrigues in 1528. Rodrigues was occupied by many countries while exploring routes to the Spice Islands. In 1691, the Huguenot François Leguat tried to set up a farming colony, which failed due to its dry climate. The island was used to replenish supplies of water and food like giant tortoises and birds. In 1735, the French established the first permanent settlement on Rodrigues. Today, Rodrigues is part of the Republic of Mauritius. The downfall of Rodrigues day gecko began with the arrival of people to the island. Once a colony was established, people began cutting down trees and burning sections of the forest. Francois Leguat’s account noted that many lizards would fall from the trees when they were hit to knock down coconuts. The birds like the bitterns would come and gobble them up. Since the Rodrigues day gecko spent most of its time in trees, its range became limited. Like so many animals on other islands, the final blow came with the arrival of rats and cats to the island. These new predators finished off the remaining day geckos. The last Rodrigues day gecko was seen in 1917. Although Jurassic Park is fiction, scientists are working on several de-extinction projects. In fact, in 2003 scientists did bring back the extinct Pyrenean ibex, a type of wild goat, for 7 minutes before it died, showing de-extinction is possible. The Rodrigues day gecko might be a candidate, since there are 6 preserved specimens in museums in London and Paris. Scientists could potentially use that soft tissue to de-extinct the Rodrigues day gecko. If the Rodrigues day gecko was brought to life, could it ever be reintroduced to its native homeland in Rodrigues and nearby islets? This very question is wrapped up well by the observations by Ben J. Novak who works with Revive & Restore, a scientific group looking into de-extinction projects like the dodo and Mauritius giant tortoises. Mr. Novak said, “My time in Mauritius was a true crash course in the nation’s proud conservation movement. Mauritius, while having lost the majority of its endemic species, is home to some of the most incredible recovery projects of endangered species anywhere in the world. For example, after having declined to only 12 individuals in 1968, the population of Rodrigues Fody, a small, red-faced songbird, has recovered to over 8,000. Mauritius has pioneered innovative hybrid programs of in situ and ex situ conservation recovery, exemplified by the Mauritius Kestrel recovery; the population has grown from a single female and 3 males in 1974 to over 400 individuals today. And it is one of the first countries to replace an extinct species, the endemic Mauritius Giant Tortoise, with a living ecological surrogate – the Aldabra Giant Tortoise. In essence, Mauritius has already done de-extinction the non-genetic way.” It seems that if the Roridgues day gecko was ever brought back, Rodrigues and other Mascarene islands have already done much to prepare for its return.
COMING SOON
The Rodrigues day gecko's Lazarus tale has yet to be written, but what adventures will await it when it returns to Rodrigues Island? Stay tuned to find out.
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VIDEOS & ADDITIONAL INFO
Rodrigues Day Gecko Information
Rodrigues Day Gecko Facts - Video
Francois Leguat Reserve Rodrigues
Lost Pollinator Lizard of Rodrigues
Madagascar Giant Day Gecko Information
6 Small Day Geckos Kept as Pets
Madagascar Giant Day Geckos as a Pet & Invasive Species