Partula affinis, P. otaheitana, French Polynesian tree snail
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Partula affinis, P. otaheitana, French Polynesian tree snail
Plate 29 from Studies on the Genus Partula by Henry Edward Crampton (1916). Found only in French Polynesia this entire genus is on the brink of extinction due to predation from the introduced rosy wolf snail
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Compare Comparison Crampton Endangered Gastropod Gastropoda Mollusc Mollusca Mollusk Polynesian Shell Snail Spiral Striped Study Threatened Edward Henry Invertebrata
EDITORS COMMENTS
Plate 29 from "Studies on the Genus Partula" by Henry Edward Crampton (1916) showcases two exquisite and endangered species of French Polynesian tree snails: Partula affinis and Partula otaheitana. These striking invertebrates belong to the Partulidae family, found only in the tropical islands of French Polynesia. The intricately patterned shells of these snails display a beautiful spiral design, with Partula affinis featuring a bold, striped pattern and Partula otaheitana boasting a more subtle, speckled appearance. Unfortunately, these magnificent creatures are on the brink of extinction due to the devastating impact of the introduced rosy wolf snail (Euhadra amoena). This invasive predator has decimated native tree snail populations throughout the region, making conservation efforts crucial. Comparing the two species, one can appreciate the unique variations in their shells and coloration. Partula affinis, also known as the striped tree snail, has a more robust, conical shell, while Partula otaheitana, or the Moorean viviparous tree snail, has a more elongated, cylindrical shell. Both species have adapted to their arboreal habitat, with specialized feet that enable them to cling to tree trunks and branches. As molluscs, these snails belong to the Phylum Mollusca, which includes a vast array of invertebrates, from the humble clam to the magnificent giant squid. The Partulidae family, to which these snails belong, is a diverse group of gastropods, characterized by their coiled, spiral shells. The study of these fascinating creatures, as documented in Crampton's work, is essential for understanding their unique biology and ecology, as well as for developing effective conservation strategies to safeguard their survival. The comparison of these two species highlights the importance of preserving biodiversity and the delicate balance of ecosystems in French Polynesia and beyond.
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