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Tree snails of Tōtaiete mā (Partula mirabilis, hebe, rosea, garrettii, mooreana, navigatoria, nodosa, suturalis, and varia)
once ranged across the Tōtaiete mā (Society Islands) of the South Pacific
caught in the crossfire of an attempt to control an invasive snail species, the predator introduced to hunt the invader decimated the native snails instead
[Joel Sartore (1, 2, 4, 6, 7) , Tengu84 (3), Geni (5, 9), Simon J. Tonge (8)]
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From left to right there are six of the twelve species of Partula snails only surviving in captivity, totally extinct in the wild: P. suturalis strigosa, P. mirabilis, P. hebe bella , P. tristis, P. dentifera , P. tohiveana. Shot at Bristol Zoo Gardens while I was there to cover the Desertas Wolf spider story. #invertebrate #conservation #conservationphotography #snail #partula #polynesia #pickoftheday #macro #extinction #lost #wildlife @bristolzoo @ilcp_photographers (presso Bristol Zoo Gardens) https://www.instagram.com/p/BpWovicny5W/?utm_source=ig_tumblr_share&igshid=1vwvt3r73sz7q
Snail extinction
(source)
In 1996, the last individual of the snail species Partula turgida (the Polynesian Tree Snail) died at the London Zoo. A protozoan disease of the digestive gland was believed responsible for the extinction of this last specimen. Numerous field surveys failed to find extant populations of this species in the wild (the South Pacific island of Raiatea in the Society Island chain, about 5000-km south of Hawaii). Raiatea residents began importing predatory snails from Florida in 1986 to eat a different pest snail, but the predators attacked the native snails. By 1991 they had driven the species to the brink of extinction. Scientists captured the last known P. turgida individuals to try to save them through captive breeding.« [Image: Polynesian tree snail of a different species in the Partula genus, shown on a test tube for scale]
