Wildlife of Seychelles - Human History and Fauna

Human History and Fauna

In common with many fragile island ecosystems, the early human history of Seychelles saw the loss of biodiversity including the disappearance of most of the giant tortoises from the granitic islands, felling of coastal and mid-level forests and extinction of species such as the chestnut flanked white eye, the Seychelles Parakeet, the Seychelles Black Terrapin, and the saltwater crocodile. However, extinctions were far fewer than on other islands such as Mauritius or Hawaii, partly due to a shorter period of human occupation (since 1770). The Seychelles today is known for success stories in protecting its flora and fauna.

Arguably the first scientific study of Seychelles was that of the Marion Dufresne expedition in 1768, two years prior to settlement. Dufresne instructed Duchemin, captain of the vessel La Digue, to ...especially give the greatest attention to the study and prospects of all the species of inland productions such as trees, bushes, plants, herbs, quadruped animals, birds, insects, freshwater fish, stones, soil, minerals. Nothing is unimportant. You must not avoid giving details and descriptions- everything is worthy of attention. Their observations remain an intriguing window on Seychelles prior to human interference.

Subsequent to settlement, Fairfax Moresby’s hydrographic survey in 1822, was the first scientific study in the islands, while early collectors included those of Pervillé, Wright and Mobius during the early to mid nineteenth century. The first major avian collector was Newton in 1865 followed by Lantz in 1877, both in the granitics. Abbott collected in the granitics in 1890 and in the Aldabra group in 1893. Voeltzkow also made general natural history collections on Aldabra in 1895.

In 1882, Coppinger made extensive collections and observations. Several expeditions followed, most significant of which was the Percy Sladen Expedition aboard Sealark in 1905, when Gardiner made extensive collections in the granitics and outer islands. His collections for some islands remain the only records available into the 21st century.

Studies subsequent to Gardiner were sparse up to the 1950s, though some residents of Seychelles made valuable contributions, notably Dupont, Thomasset, Baty and Vesey Fitzgerald. Visiting oceanographic expeditions also made some collections. In the 1950s, Smith conducted a major study of marine fish, while Cousteau also visited in 1954 aboard Calypso. Legrand collected Lepidoptera in the 1950s, while the Bristol University expedition of 1964-65 focussed on birds and insects.

The contribution of Royal Society to the knowledge of Aldabra from 1966 is legendary and work on Aldabra continued under the custodianship of Seychelles Islands Foundation