Distribution and ecology of Zootecus insularis (Ehrenberg, 1831) (Gastropoda, Pulmonata, Achatinidae, Subulininae) and its value as a palaeoenvironmental indicator species
Authors: A. Girod, D. SassoonBasteria, 86 (2): 120-152
Abstract
Zootecus insularis is a land snail usually confined to arid and semidesert environments. However, studies from the Arabian Peninsula and Pakistan have reported that this species have also lived in mesic habitats such as gardens, palm plantations, and other irrigated places. A likely reason for this contradiction is that Z. insularis is highly adaptable and therefore able to survive in semi-arid environments as well as more mesic microhabitats. Most of the mesic microhabitats where Z. insularis has been found are of anthropic origin and, therefore, related to modern, often present-day ecology. We present an in-depth, comprehensive review of both ancient and modern occurrences of Z. insularis based on 19th and 20th century contributions of geographers, zoologists, botanists, and archaeologists, and we investigate this species’ palaeoenvironment. Comparisons made between finds of Z. insularis, floral and faunal remains, and palaeoenvironmental records show that this species had responded to periods of climatic variability in Asia and Africa during the Pleistocene and Holocene. Overall, our review contributes to the understanding of the distribution of Z. insularis through space and time, and its use as a palaeoenvironmental indicator.