Rıdvan Şeşen

• Dicle University

This study presents new insights into the near-threatened endemic microsnail Sheitanok amidicus (Schütt & Şeşen, 1991), shedding light on its distribution and morphological characteristics, which have never been documented alive. Surveys conducted in 2023 uncovered two previously unknown localities where the species thrives: stenothermic springs in...

The purpose of the study is to draw attention to the existence of the threatened species C. avenacea (Bruguière, 1792) (Gastropoda: Pulmonata), a new record for the fauna of Turkey, and to describe the shell morphology and distribution. The species is in the international union for conservation of nature (IUCN) Red List of threatened species (least...

The historical Hevsel Gardens in Diyarbakır, Turkey, was registered as a UNESCO cultural heritage site in 2015. The biodiversity of the habitats was revealed by compiling the inventory obtained from the field studies in the Hevsel Gardens, and its surroundings, including the Tigris River between 2002-2021, and from the literature containing studies...

The rare species Drusia (Drusia) ibera (Eichwald, 1841) (Gastropoda, Pulmonata, Parmacellidae) is reported for the first time in Turkey (Diyarbakır). Specimens studied have large, rough skin and a large granular, banded mantle with a large pneumostoma on the right of the posterior part. The body length of well-developed adults is between 10 and 12c...

The objective of the present study is to inform the last distribution of the invasive and harmful species Cochlicella barbara (Linnaeus, 1758) in Turkey, as well as to draw attention to the possible danger of this distribution on regional vegetation, agriculture, and parasitism. C. barbara was found for the first time in south-eastern of Anatolia i...

Ambigolimax valentianus (A. Férussac, 1822), the three-band garden slug, is originally native to the Iberian Peninsula (Spain, Portugal, and the Balearic Islands); however, it has been spread by human activities to many other parts of the world. There is no distributional record of the slug in Turkey to date. The species was recorded for the first...

The present study has evaluated the usage and properties of the mollusca phylum from the history to today. Many types of molluscs are eaten worldwide, either cooked or raw due to their rich nutritional value. Furthermore, they are used as pearl, cowry and accessory materials, for tools like household dishes, cooking pots and utensils such as a spoo...

The change of earth shape over time is expressed as Geological Evolution. The German meteorologist Alfred Wegener (1880-1930) describes the geological evolution of the Continental Drift Theory, which means that terrestrial parts of the earth and large water bodies change over time. the sea for a long time. Today's both the Mediterranean and the Bla...

The purpose of this work is to reveal the fatty acid composition of phospholipids, neutral and total lipid content of edible land snails Helix lucorum, Eobania vermiculata and non-edible land slug Limax flavus (Gastropoda: Pulmonata). The analyses revealed that the snails and slug are rich in C16:0, C18:0, C18:1ω9 and C18:2ω6 acids. Phospholipid fr...

Bacteria, algae, fungi, yeast and archeabacter are among the most potentially substantial sources of sustainable biofuels in the future of renewable energy. These engineering microorganisms have a wide variety of functions related to biofuels such as producing acetone, butanol, ethanol by fermenting sugar sources, secreting cellulase for facilitati...

Present study has evaluated the protein contents of four land snails (Helix lucorum, Assyriella mardinensis, Assyriella vanensis, Eobania vermiculata) and six bivalves (Mytilus galloprovincialis, Pecten jacobaeus, Tapes decussatus, Unio elongatulus, Corbicula fluminalis, Anodonta piscinalis) selected tissues including foot, mantle, hepatopancreas,...

Objective: The objective of the study was to examine the nutritive value of Helix lucorum meat and to create awareness about fatty acid composition of phospholipid subclasses of the total body and cephalopedal tissues of the snail. Methods: Thin layer chromatography plates contained lipid samples placed in the chromatography tank containing: chlor...

Yenilebilir salyangoz Helix lucorum'un sefalopedal ve total vücut dokusundan elde edilen fosfolipit alt sınıflarına ait yağ asitlerinin belirlenmesi] ABSTRACT Objective: The objective of the study was to examine the nutritive value of Helix lucorum meat and to create awareness about fatty acid composition of phospholipid subclasses of the total bod...

Diyarbakır Devegeçidi Köprüsü civarından toplanan tatlısu salyangozu Thedoxus syriacus (Bourguignat, 1853)'un fosfolipit, nötral lipit ve total vücut lipitlerinin mevsimsel yağ asiti değişimi, bir yıl boyunca araştırıldı. Salyangozun tüm vücut lipitleri, ince tabaka kromatografi ile fraksiyonlandı. Fosfolipit, nötral lipit ve total lipit yağ asitle...

The much debated link between the collapse of urban centres in northern Syria and climate change at the end of third millennium bc is arguably one of the best known cases about human societies' struggle with the unpredictable nature of the Holocene. Fine-grained analyses of bioarchaeological materials offer excellent opportunities to overcome some...

Purpose: The aim of this work was to investigate quantitative and qualitative fatty acid composition of phospholipid, monoacylglycerol, diacylglycerol, triacylglycerol and total body lipid of two adult freshwater mussels, Anodonta piscinalis (Nilsson, 1822) and Corbicula fluminalis (Müller, 1774). Methods: Mussels' body lipids were fractionated by...

Possible seasonal variations of the fatty acid composition (neutral lipid, phospholipid, and total lipid content) of the freshwater snail Melanopsis praemorsa were investigated over the course of a year. Snail body lipids were fractionated by thin layer chromatography. Fatty acid composition of total body lipid, phospholipid, and neutral lipid of w...

The quantitative and qualitative fatty acid compositions of phospholipid and neutral lipid were investigated and compared for specimens of the freshwater mussel Unio elongatulus. Samples were collected from 4 diff erent localities in Turkey: Çağçağ Brook in Nusaybin (Mardin), Fabrika Brook in Çınar (Diyarbakır), the Tigris River under the Sadi Brid...

Abstract: Seasonal variation of the fatty acid composition of the neutral lipid, phospholipid and total body lipid of freshwater snail Theodoxus syriacus (Bourguignat, 1853) collected from Devegeçidi Bridge vicinity in Diyarbakır, were investigated over the course of the year. Snail’s whole body lipids were fractionated by thin layer chromatography...

In this study, fatty acid levels of total lipid, phospholipid and neutral lipid of the flesh from freshwater mussel (Unio elongatulus) collected from Tigris River in Diyarbakır in June 2007, were investigated. Whole body lipids of the mussel were fractionated by thin layer chromatography. The fatty acids of total lipid, phospholipid and neutral lip...

In this study, body lipids of an endemic freshwater snail Pseudamnicola bilgini collected from Sultanköy in Mardin in October 2007 were fractionated by thin layer chromatography. Total lipids, fractionated lipids such as phospholipids and neutral lipids of whole snail were analyzed by capillary gas chromatography and gas chromatography-mass spectro...

In this study, body lipids of a freshwater snail Bithynia tentaculata collected from Sultanköy in Mardin in April 2007 were fractionated by thin layer chromatography (TLC). Total lipids, fractionated lipids such as phospholipids and neutral lipids of whole snail were analyzed by capillary gas chromatography and gas chromatography-mass spectrometry....

In this study, body lipids of a freshwater snail Melanopsis praemorsa collected from Devegeçidi Bridge in Diyarbakır in June 2007, were fractionated by thin layer chromatography (TLC). Total lipids, fractionated lipids such as phospholipids and neutral lipids of whole snail and algae as diets were analysed by capillary gas chromatography and gas ch...

Abstract: In this study, body lipids of a freshwater mussel, Dreissena siouffi, were fractionated by thin layer chromatography (TLC). Total lipids, fractionated lipids such as phospholipids and neutral lipids fatty acids of whole mussel were analyzed by capillary gas chromatography. In the analysis, saturated fatty acids such as C10:0, C12:0, C13:0...

Five species of land snails have been found as new for Turkey, belonging to the Pupilloidea, Endodontoidea and Clausilioidea. They were collected in the north-eastern part of the country and most of them are endemic to the Transcaucasian Mountains.

So far Bulinus truncatus samples have been found in two localities in Turkey, Habur stream, Ceylanpinar, Şanliurfa, and water flow at Bolatlar village, Akçakale, Şanliurfa. In this study, the conchological features of samples obtained from those two localities were investigated and the results were compared. In both localities, the shells of the th...

Twenty-four species of land-snails were found in the Province of Osmaniye in southern Turkey between 1995 and 2001. Their distribution and their habitats are described here.

This study was performed on 3 species of the genus Assyriella (A. escheriana , A. guttata and A. thospitis) collected from Diyarbakir province in Southeast Anatolia. Two derived and 6 shell variables of 50 specimens were examined for each species. Hierarchical clustering and discriminant analysis were used to evaluate the data in order to clarify a...

Rediscovery of the land-snail Sesteria gallandi Bourguignat. 1884 is reported. The original description was based on only one empty shell, which later was lost and never found again, and the exact type locality in Turkey was unknown. Now we found this species in Mardin Province near the village of Sariköy on the Cizre - Idil - Midyat road 20 km aft...

The malacofauna of Sason Mountains in eastern Anatolia has been studied. 16 species of land snails were found, some of which are endemic and were only recently described.

A new land snail Orculella garzanensis which is evidently the largest species of this genus was described from East Anatolia Siirt Province.

Two species of Theodoxus belonging to different subgenera occur in SW-Anatolia. The distribution of Theodoxus (T.) heldreichi is discussed and a new subspecies (T. heldreichi fluvicola) is described.

The mollusc fauna of the spring of the Habur river near Ceylanpinar (Ras al-Ain) on the Turkish-Syrian border, well known in the malacological literature as a type-locality, consists of species of Syrio-Arabian and of Palaearctic origin. A complete faunal list is given and the status of the taxa is discussed. Kurzfassung Die Molluskenfauna der Quel...