Keywords
aestivation; epiphragm; shell aperture;
Pages
pp. 165 -
169

Aestivation is the state of dormancy that occurs in snails when the weather condition is harsh, either dry season or warm season. During this period, the giant African land snails form epiphragm, sealing the aperture of the shell which serves as water preservative strategies, preventing mechanical damage of the inner soft tissues. A study on the formation and mineral composition of the epiphragm in three species of giant African land snails namely: Achatina achatina, Achatina fulica and Archachatina marginata was carried out. Twenty matured snails were used for this experiment. They were induced into aestivation by withdrawing food and water. The snail weight, shell length, aperture length, and epiphragm weight were measured during aestivation as well as duration of epiphragm formation. The ionic concentration (calcium, iron and phosphorus) of the epiphragm was also analyzed. The morphometric analysis showed that A. marginata formed the heaviest epiphragm while the least was formed by A. fulica during aestivation. Analysis of the ions revealed that calcium was the most abundant ion in the epiphragm of the snails. Comparison of mean values reveals that A. achatina has the highest ionic composition in the epiphragm when compared to other species. Regression analysis (r2) revealed that a positive relationship existed between the aperture length and days for epiphragm formation (+0.62) on one hand and between weight of epiphragm formed and the days of its formation on the other hand (+0.77).

Формирование и состав эпифрагмы у трёх гигантских африканских улиток (Archachatina marginata, Achatina fulica и Achatina achatina)
ЭДЕМОЛУ К.О.; ФАНТОЛА Ф.О.; БАМИДЕЛЕ Дж.А.; ДЕДЕКЕ Г.А.; АЙДОВУ А.Б.;
Pages
pp. 1 -
9

This paper reports the systematics of the Clausiliidae species occurring in Son La Province, Vietnam. Specimens of 15 species and subspecies of Clausiliidae from Son La were investigated based on their shell characteristics. The subspecies Garnieria mouhoti nhuongi subsp. nov. was collected in Phu Yen, Muong Do, approximately 200 km NE of the type locality of the nominotypical subspecies Garnieria mouhoti mouhoti. This is the first species of genus Garnieria Bourguignat, 1877 from Vietnam.

Наземные брюхоногие семейства Clausiliidae (Gastropoda: Pulmonata) из Сон Ла, Вьетнам, с описанием нового подвид
До Д.С.; До В.Н.;
Pages
pp. 11 -
14

The results of investigation demonstrate that the eye of Succinea putris is adapted for vision in daytime under pretty high level of illumination.

Строение и оптические свойства камерного глаза брюхоногого легочного моллюска Succinea putris (Linnaeus, 1758) (Stylommatophora, Succineidae)
Шепелева И.П.;
Pages
pp. 15 -
18

The study of reproductive tract of the south-east Asian species Helix pernobilis Férussac, 1821 has shown that the species belongs to the genus Koratia Godwin-Austen 1919. The problem of taxonomic rank of the genus Koratia and its comparison with related taxa (Ariophanta and Hemiplecta) are briefly discussed.

Таксономическое положение Helix pernobilis Férussac 1821 и заметки о роде Koratia (Gastropoda: Pulmonata: Ariophantidae)
Шилейко A.A.;
Bolotov I.; Bespalaya Y.; Aksenova O.; Bolotov N.; Gofarov M.; Kondakov A.; Spitsyn V.; Tumpeesuwan S.; Vikhrev I.;
Keywords
Indawgyi Lake; freshwater clams; morphological characters;
Pages
pp. 19 -
23

Pisidium nevillianum Theobald, 1876, a common pea clam species that widely ranged from India to Indochina, was recorded in the Indawgyi Lake, Northern Myanmar for the first time. These specimens share the same or very similar 16S rRNA haplotypes as specimens from Nepal (geographic distance of over 1,400 km), which could reveal a high dispersal rate of the species, likely via water birds. Same high dispersal possibilities were observed for many other sphaeriid species.

Первая находка Pisidium nevillianum Theobald, 1876 (Bivalvia: Sphaeriidae) в Мьянме
Болотов И.; Беспалая Ю.; Аксенова O.; Болотов Н.; Гофаров M.; Кондаков A.; Спицын В.; Тумпеесуван С.; Вихрев И. ;
Pages
pp. 25 -
35

The article deals with the fauna of aquatic snails (Gastropoda) of the Nature Reserve (Zapovednik) “Malaya Sos’va” (Russia, Western Siberia, Tyumen Region). It is the first review of the zapovednik malacofauna ever published. 44 waterbodies of different types were samples in August of 2014, 16 species of Gastropoda belonging to four families has been registered. The annotated check-list of species along with brief zoogeographic characteristics of the fauna are provided. The fauna of aquatic snails of the “Malaya Sos’va” is impowerished as compared to other regions of Western Siberia. The possible factors caused this low taxonomic richness are discussed.

Брюхоногие моллюски (Gastropoda) водоемов заповедника «Малая Сосьва» (Западная Сибирь)
Винарский М.В.; Каримов А.В.;
Pages
pp. 37 -
43

The family Streptaxidae comprise 8 species and subspecies occurring in Son La, North-western Vietnam. The present paper provides data relevant to these species and the descriptions of two new species. Stemmatopsis nangphaiensis sp. nov. has an oblique-heliciform shell with elevated spire. The aperture is quadrangular with rounded angles, toothless, peristome is thick and slightly expanded. Stemmatopsis vanhoensis sp. nov. has a depressed-heliciform shell. The umbilicus is wide with long curvy furrow. The aperture is quadrangular and toothless, peristome is very thick and expanded.

Наземные брюхоногие моллюски семейства Streptaxidae J.Gray, 1860 (Gastropoda: Pulmonata) из Сон-Ла, Вьетнам, с описанием двух новых видов
До Д.С.; До В.Н.;
Pages
pp. 45 -
50

Spermatophores of Oxyloma dunkeri (Zelebor in L. Pfeiffer, 1865) and O. elegans (Risso, 1826) are described for the first time.

Описание сперматофоров Oxyloma dunkeri (Zelebor in L. Pfeiffer, 1865) and Ox. elegans (Risso, 1826) (Gastropoda, Pulmonata, Succineidae)
Шиков Е. В.;
Pages
pp. 51 -
67

Data on archaeomalacological samples from Nikolaevskoe I (Primorye), a medieval settlement of Bohai (Parhae) Empire period (VIII–X centuries) located in the Chuka and Ilistaya rivers valley, Khanka Lake water basin, and their interpretations, are presented. In total, 8 species of molluscs were found, including three freshwater (2 bivalves and 1 gastropod species) and five marine (4 bivalves and 1 gastropod) species. The majority of shell fragments collected in archaeological deposits belongs to the freshwater pearl mussels Dahurinaia dahurica (Middendorff, 1850). Among marine mollusks, bivalves Anadarainaequivalvis” (Bruguière, 1789) and Glycymeris yessoensis (Sowerby III, 1889) are predominant. Descriptions of shell peculiarities as related to human use are given. A comparison of valve teeth of modern and excavated fresh-water bivalves shows their identity. Ways of utilizations of mollusks by Bohai people are discussed. Shells from Bohai archaeological deposits in Primorye are illustrated for the first time in details.

Моллюски из средневекового городища Николаевское
Саенко Е.М.; Прокопец С.Д.; Лутаенко К.А.;
Pages
pp. 69 -
71

The findings of living specimens of two gadilid scaphopods – Cadulus subfusiformis (M. Sars, 1865) and Pulsellum lofotense (M. Sars, 186) in the coastal waters of Kola Peninsula (SW Barents Sea) are described. Cadulus subfusiformis was previously known from the region only by single empty shell, Pulsellum lofotense was recorded previously without exact locality and was not listed in the modern literature dedicated to the Russian fauna.

Новые находки гадилид на юго-западе Баренцева моря (Scaphopoda: Gadilidae)
Нехаев И.О.;
Keywords
Red Data book; Japan Sea; Posjeta Bay; range extension;
Pages
pp. 73 -
76

Additional specimens of Papyriscala tricincta were collected for the first time since original description of the species. Comparison of the shells with several similar Indo-Pacific species allowed us to conclude that P. tricincta is a junior subjective synonym of the broadly distributed Epitonium clementinum.

О таксономическом положении и распространении Papyriscala tricincta Golikov in Golikov et Scarlato, 1967 (Gastropoda: Epitonidae)
Гульбин В.В.; Кантор Ю.И.;
Pages
pp. 77 -
87

On the basis of the newly available material, the previously monotypical genus Fusipagoda was revised. In addition to the type species, Mohnia exquisita, two more were attributed to the genus – Colus sapius and Mohnia corbis. A new species, Fusipagoda itohabei sp. nov., is described.

Об абиссальном роде Fusipagoda Habe et Ito, 1965 (Neogastropoda: Buccinidae) из северной части Тихого океана
Косьян А.Р.; Кантор Ю.И.;
Pages
pp. 89 -
92

Buccinum rodgersi Gould, 1860, described from the Bering strait (between the Bering and Chukchi Seas) was never recorded or mentioned in literature since 1883 (with the exception of bibliographical work of R. Johnson, 1964). As it was found that although the species name is not used in current literature, the species was recorded in the Far-East seas of Russia [Sirenko et al., 2013] under the other name, Plicifusus mcleani Sirenko, 2009. In this paper Buccinum rodgersi is transferred to Plicifusus Dall, 1902. Plicifusus mcleani Sirenko, 2009 is considered as its junior synonym.

Забытый вид из Берингова пролива – Buccinum rodgersiGould, 1860 (Neogastropoda: Buccinidae)
Меркульев А.В.;
Pages
pp. 93 -
97

In May 2014, numerous specimens of Cepaea hortensis were found in Vidnoe, a town 5 km south from the Moscow City. C. hortensis is the third species of the genus introduced in the Moscow Region. The nearest locality of C. hortensis is known from the Vitebsk Region of the Republic of Belarus (about 550 km W of Moscow). Now C. hortensis is reported from one site of Vidnoe town, where it forms a stable population. Also, a few specimens of this species were collected in the park of Timiryazev’s Agriculture Academy in northern part of Moscow City.

Первая находка интродуцированной улитки Cepaea hortensis (Müller, 1774) (Stylommatophora: Helicidae) в центральной части Европейской России.
Егоров Р.;
Pages
pp. 99 -
102

The anatomical study of slugs, collected between 2009 and 2015 in Dnepropetrovsk, Donetsk, Lvov and Kharkov Regions of Ukraine, shows the presence of only one species from the complex Arion subfuscus. By size, colour and position of the gonad, relative width of the anterior part of oviduct and by the arrangement of distal parts of reproductive system all studied specimens belonged to Arion fuscus.

Слизни из комплекса Arion subfuscus (Arionidae) на равнинной территории Украины
Гураль-Сверлова Н. В.; Гураль Р. И. ;
Pages
pp. 103 -
104

Dissection of adult specimens of Campylaea illyrica showed that penial papilla of this species
is very similar to those of the type species of the genus Faustina.

Новые сведения о Campylaea illyrica (Stabile, 1864) (Pulmonata, Helicidae, Ariantinae)
Шилейко А. А.;
Keywords
Autofluorescence imaging; composite imaging; documentation; cephalopod paralarvae; exo-morphology;
Pages
pp. 105 -
116

In the field of zoological (and palaeontological) research, accurate documentation methods for the exo-morphology are essential. Here we propose a new method for the documentation of cephalopod paralarvae and juveniles. For documenting small-sized cephalopods autofluorescence microscopy offers numerous advantages for the presentation of outer body parts and surface structures in high resolution, partially also of internal structures such as the gladius. Structures are especially well-contrasted compared to other imaging methods, such as white-light microscopy, micro- or macrophotography. This facilitates a detailed view in high resolution at even the smallest cephalopod paralarvae. Autofluorescence imaging, combined with composite imaging, creates sharp, evenly illuminated pictures. In its higher magnification ranges it can be well compared to low-magnifying scanning electron microscopy (SEM) images, but with the advantage that the drying, mounting and preparation needed for SEM is not necessary for autofluorescence microscopy. In contrast the method enables the direct documentation of specimens inside their storage liquid. This is especially important for the investigation of rare specimens, e.g., for historical material from museum collections, or as a pre-documentation for specimens that will be processed further with an invasive method. By the use of different excitation wavelengths it is furthermore possible to either enhance surface structure details or certain inner body structures. Autofluorescence microscopy is also excellent for the imaging of certain types of small-sized fossil cephalopods, not least as the contrast against the matrix can be significantly improved. All these methods and the associated opportunities for studying cephalopod paralarvae are explored in this study.

Автофлуоресцентная микроскопия как метод документирования параларв и ювенильных особей головоногих моллюсков
Метц М.; Хауг К.; Хауг И. Т.;
Keywords
Gastropoda; prosobranchia; tetrestrial snail; Son La; endemic;
Pages
pp. 117 -
132

Son La is a province in the north-western Vietnam, the mountain chain running along the Northwest-Southeast has a phylogenetically diverse terrestrial snail fauna dominated by endemic species, which are very little known so far. This is the first checklist of the terrestrial prosobranch snails from Son La. It includes 42 species, belonging to 17 genera in five families, of which three species are endemic (Dioryx vanbuensis, Cyclophorus implicatus, and Scabrina vanbuensis). In this study two species are recorded for the first time for Vietnam (Chamalycaeus paviei, Scabrina laciniana) and 32 additional species are added to the species list of the Son La.

Чеклист и классификация наземных переднежаберных брюхоногих моллюсков из Сон Ла, северо-западный Вьетнам
До Д.С.; Нгуен Т.Х.Т.; До В.Н.;
Pages
pp. 133 -
137

In 1881 expedition of the Bremen Geographical Society collected molluscs in the north-western part of the Bering Sea off the coast of Chukotka. Unfortunately, the result of this work has not been fully appreciated by Russian malacologists since it was believed that the German expedition was working in American, not Asian waters. In this paper, On the basis of materials from the collection of the Berlin Museum of Natural History and published data it is proved, that molluscs were collected off Asian coast. Photos of the types of Gastropoda described A. Krause, are presented for the first time. "Bela" luetkeana Krause, 1885 (Mangeliidae) is attributed herein to the genus Propebela Iredale, 1918.

Виды переднежаберных брюхоногих Берингова моря, описанные А. Краузе в 1885 г.
Меркульев А.В.;
Pages
pp. 139 -
145

A new species of chiton, Leptochiton antarcticus n. sp., is described from the Southern Ocean from depths of 87-1,524 m. The new species is distinguishable from other congeneric species by the shape of head of major lateral teeth of radula, dorsal scales and anterior position of mucro.

Leptochiton antarcticus (Mollusca, Polyplacophora) – новый вид из Южного океана
Сиренко Б.И.;