By Jasmine Taberer | Science Officer
Dear Supporters,
Usually between April and September we conduct a census of the free ranging population of Aldabra giant tortoises on the island. There are approximately 145 animals roaming the hills and forests, and we aim to find at least 90% of individuals each year.
The work is hot and difficult, searching for some of the most remote parts of the island, and it is surprisingly difficult to find such large animals concealed in the undergrowth. When each one is found, it is identified and several measurements taken to assess the growth rate. In order to identify each individual, electronic Passive Integrated Transponder (PIT) tags are inserted which assigns a unique ID number, which can then be later read by a scanner.
There is also a nursery to house any new hatchlings found in the field. There they will stay for up to five years until they are more able to withstand predation from invasive rats, and of a size that makes them far less vulnerable to poaching. When volunteers are on island, Curieuse is in an ideal position to detect and relocate many of these hatchlings to the nursery, located at the Seychelles National Parks Authority ranger station.
In order to track these individuals we use two different types of PIT tag, without which we would not be able to identify individuals, so it is important for us to maintain adequate stocks of both small and large tags. Any donations to this project will be used to fund the purchase of new supplies of PIT tags, or to replace the scanner which has a finite lifespan.
Having got off to a great start for 2020, of course the coronavirus pandemic is now having a severe impact on all countries of the world, and Seychelles has not escaped. With all our bases around the world having been temporarily closed in late March, there are no volunteers to assist with our research and conservation projects, so we have had to drastically scale back our activities.
With volunteers expected to arrive back on Curieuse Island in mid-October, our Aldabra giant tortoise survey will resume in early 2021.
For the first couple of months of 2020 we continued the great progress in research and conservation on Curieuse. While this is now clearly a very challenging time for everybody, we feel it is important to identify areas we can take advantage of to continue the great work that everyone has contributed to over the years with GVI Curieuse, and that is what we plan to continue doing!
With Gratitude,
Seychelles Giant Tortoise
By Alan Grant | Program Manager
By Jasmine Taberer | Program Manager
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