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• W2970784884 abstract "The conservation of tropical limestone karsts is a priority for Malaysia. To assist karst conservation, sound understanding of the taxonomy and biogeography of karst endemic taxa is required. In this study, I used the genus A/ycaeus as a model taxon for this purpose, focusing on two aspects of the genus: species taxonomy and biogeography. First, on taxonomy: A total of 10 species and one subspecies of A/ycaeus was recognised in Peninsular Malaysia prior to this study. However, thesetaxonomic descriptions of A/ycaeus taxa are based on limited number of examined materials where a whole spectrum of morphological variations were not accounted for and diagnosis were often provided without sufficient comparison betweencongeners from across the peninsula. I reviewed Peninsular Malaysian A/ycaeus through the examination of major museum collection lots and literature sources. Based on these examined materials, I utilised a more comprehensive set of shell andoperculum characters, as well as living animal colour to describe all Alycaeus species in this paper. I also noted their habitat and ecology, as well as updated thedistribution of each species. Of the 11 previously described taxa, nine were reconfirmed as present on Peninsular Malaysia (Alycaeus balingensis, Alycaeus llratulus, Alycaeus thieroti, Alycaeus conformis, Alycaeus gibbosulus, Alycaeuskelantanensls, Alycaeus carlnata, Alycaeus perakensis altispirus, Alycaeus perakensis) and two were confirmed as absent on the peninsula (Alycaeus jagori,Alycaeus pyramidalls). A new record of Alycaeus robe%n/ is reported for PeninsularMalaysia. One species, Chama/ycaeus jousseaumei is confirmed as present on the peninsula and is reassigned to A/ycaeus The subspecies A/ycaeus perakensis altispirus Mollendorff, 1902, is elevated to species. Examined Peninsular Malaysianmaterials that do not fit previously recognised species are described as new species. A total of 11 new species are proposed (A/ycaeus se/angoriensis Foon and Liew, 2017,Alycaeus costacrassa Foon and Liew, 2017, Alycaeus ikanensis Foon and Liew, 2017, Alycaeus altico/a Foon and Liew, 2017, Alycaeus charasensis sFoon and Liew, 2017, Alycaeus kurauensis Foon and Liew, 2017, Alycaeus regal/s Foon and Liew, 2017,Alycaeus virgogravida Foon and Liew, 2017, Alycaeus senyumens/s Foon and Liew, 2017, Alycaeus expansus Foon and Liew, 2017, Alycaeus c/ementsi Foon and Liew, 2017). Overall, 23 species of A/ycaeus are now recognised in Peninsular Malaysia.Second, on biogeography: With Alycaeus species and their distributions identified, Iutilised Geographic Information System tools to study their biogeography acrossPeninsular Malaysia. First, I examined the role of the Titiwangsa Range as a potentialbiogeographic barrier for A/ycaeus species. I found that the Titiwangsa Rangeappears to be a barrier for limestone rock dwelling A/ycaeus species while arborealand rotten log dwelling A/ycaeus species are either restricted to one side or found onboth sides of the Titiwangsa Range. Second, I elucidate and discuss the correlationbetween hill isolation, hill size and the degree of A/ycaeus endemism. I found thatthere is no correlation between hill isolation and A/ycaeus endemism, while there isa weak correlation between hill size and A/ycaeus endemism. These findings runcontrary to previous conclusions of land snail community level studies whereby hillisolation and hill size have strong correlations with land snail endemism. Overall,these findings suggest that conservation of limestone karst biodiversity shouldconsider not just endemism patterns at the community level but also at the genuslevel as well, especially for those genera that are known to be restricted to limestonerock habitats." @default.
• W2970784884 created "2019-09-05" @default.
• W2970784884 creator A5058627279 @default.
• W2970784884 date "2018-01-01" @default.
• W2970784884 modified "2023-09-27" @default.
• W2970784884 title "Taxonomy and Biogeography of the land Snail Genus Alycaeus (Gastropoda: Alycaeinae) in peninsular Malaysia" @default.
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