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Identifier

000412891

Title

Μελέτη της φυλογένεσης του χερσαίου σαλιγκαριού Albinaria (Gastropoda: Clausiliidae)

Alternative Title

Phylogenetic relationships in th terrestial land snail Albinaria (Gastropoda: Clausiliidae)

Author

Καρακάση, Δανάη Γ.

Thesis advisor

Πουλακάκης, Νίκος

Reviewer

Λαδουκάκης, Εμμανουήλ
Μυλωνάς, Μωυσής

Abstract

The Aegean archipelago, comprising numerous islands and islets with great heterogeneity in topographic, geological, historical and environmental properties, offers an ideal natural laboratory for ecological and evolutionary research. Land snails have been considered as ideal organisms for such studies mainly because of their low active dispersal ability. The pulmonate land snail of the genus Albinaria Vest, 1867 is distributed around the north-eastern coasts of the Mediterranean and is characterized by a high degree of morphological and molecular differentiation, especially in the south Aegean. More than 400 morphological taxa have been named and many evolutionists and taxonomists have tried to approach its taxonomy. As a consequence, several revisions have been made in which the number of species is varying according the taxonomist preference as a splitter or a lumper. Today, after 100 years of morphological and molecular research, the taxonomic tasks of this genus have not been resolved. This study, is a try to overcome these problems through a molecular phylogenetic approach, using the Next Generation Sequencing method ddRADseq, which is characterized as very promising for difficult phylogenetic tasks. Two-hundred-four specimens collected from sites covering a large part of its range which correspond to 64 of the 101 nominal species –according to the current taxonomy-, were used. Thousands genetic loci containing numerous SNP`s were produced and used to build a phylogenetic tree. The results show the presence of 15 discrete clades with relatively clear geographic structure: N. Greece, Ionian islands, Peloponissos (2), Kythera, Turkey, Cyclades/Dodecanese, Skyros, Sifnos and Crete (6) which include from 1 to 9 nominal species.

Language

Greek

Subject

Aegean Archipelago

Phylogeny

Snail

Western Mediterranean

ddRADseq

Αιγαίο Αρχιπέλαγος

Ανατολική Μεσόγειος

Φυλογένεση

Issue date