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Identifier

000448735

Title

Βιογεωγραφική προσέγγιση των Truncatelloidea (Caenogastropoda: Littorinimorpha) στην Ελλάδα

Alternative Title

Biogeorgraphical approach of Truncatelloidea (Caenogastropoda: Littorinimorpha) in Greece

Author

Κάσσαρη, Νεφέλη Α.

Thesis advisor

Μυλωνάς, Μωυσής

Reviewer

Πουλακάκης, Νικόλαος
Βαρδινογιάννη, Κατερίνα

Abstract

Truncatelloidea Gray, 1840 (Caenogastropoda: Littorinimorpha) is a superfamily of gastropods, which includes representatives that live primarily in aquatic ecosystems (marine, brackish and inland) and are usually distributed in just a single or a few sites. As a result, many taxa are endemic, or often stenotopic endemic, and due to severe damage to their habitats a lot of them are threatened with extinction. In Greece, this superfamily is poorly studied and thus our knowledge about the diversity and distribution of aquatic Gastropods in our country remains limited. The present study aims to enrich our knowledge regarding Truncatelloidea of Greece, with emphasis on their biogeographical distribution in our country, based both on bibliographical references as well as on specimens from the collection of the Natural History Museum of Crete and fresh collected specimens. 305 scientific papers by Greek or foreign authors about malacofauna of Greece and adjacent regions covering the period of 1832-2022, half of which were published during the last 20 years, were studied. Then a database with all the data obtained was created and various biogeographical analyses were applied. According to our results 149 valid species of Truncatelloidea occur in Greece, while 43 more are referred to as taxonomic problems or undetermined. The endemism rates of genera (30.6%) and species (86.6%) are the highest recorded for an animal non-marine group in Greece, highlighting the importance of this superfamily. Springs and ancient oligotrophic lakes (Trichonida, Pamvotida, Megali Prespa and Mikri Prespa) came out to be hotspots of endemism and biodiversity. After the dissection of the soft body of male and female specimens from both the collection of the Natural History Museum of Crete and from sampling on the islands Kea, Anafi and Paros, two different species of Pseudamnicola coming from the first two islands and two populations of Ecrobia maritima from Paros were identified. The latter species is reported for the first time in this island, while there is also evidence that the population of Pseudamnicola from Anafi represents a new species.

Language

Greek, English

Subject

Ecology

Endemism

Freshwater ecosystems

Molluscs

Taxonimical problems

Ενδημισμός

Εσωτερικά ύδατα

Μαλάκια

Οικολογία