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Ito S, Yamazaki D, Kameda Y, Kagawa O, Ye B, Saito T, Kimura K, Do VT, Chiba S, Hirano T. Taxonomic insights and evolutionary history in East Asian terrestrial slugs of the genus Meghimatium. Mol Phylogenet Evol 2023; 182:107730. [PMID: 36781029 DOI: 10.1016/j.ympev.2023.107730] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 01/26/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
East Asia, specifically the Japanese Archipelago, is a biodiversity hotspot of both vertebrates and invertebrates. Mollusks represent a burst of species diversity in this region due to the effects of biotic and abiotic factors on their morphological traits, such as shell shape and size. However, the evolutionary history of terrestrial slugs in East Asia remains unknown. In the present study, we investigated the molecular phylogeny of terrestrial slugs of the genus Meghimatium. This genus includes three described and eight undescribed species, and our study used all except for two. Based on phylogeny and the species delimitation tests, the genus Meghimatium was split into many putative species, suggesting higher species diversity than previously thought based on morphological and anatomical studies and that almost undescribed species may be inappropriate. Therefore, morphological traits, such as body size and colour, conventionally considered for classification may easily vary or be similar across geographic region. Moreover, the divergence time of this genus is almost concordant with the geographical time scale of the formation of the Japanese mainland. Our findings suggest that molecular phylogenetics helps classify Japanese Meghimatium slugs, but comprehensive taxonomic revisions using multi-locus analyses are needed.
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Affiliation(s)
- Shun Ito
- Center for Northeast Asian Studies, Tohoku University, Miyagi, Japan; Graduate School of Life Science, Tohoku University, Miyagi, Japan.
| | - Daishi Yamazaki
- Center for Northeast Asian Studies, Tohoku University, Miyagi, Japan; Faculty of Agriculture and Marine Science, Kochi University, Kochi, Japan
| | - Yuichi Kameda
- Department of Anthropology, National Museum of Nature and Science, Ibaraki, Japan
| | - Osamu Kagawa
- Graduate School of Life Science, Tohoku University, Miyagi, Japan; Shimoda Marine Research Center, University of Tsukuba, Shizuoka, Japan
| | - Bin Ye
- Graduate School of Life Science, Tohoku University, Miyagi, Japan; Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, China
| | - Takumi Saito
- Center for Northeast Asian Studies, Tohoku University, Miyagi, Japan; Department of Botany and Zoology, Faculty of Science, Masaryk University, Czech Republic
| | - Kazuki Kimura
- Center for Northeast Asian Studies, Tohoku University, Miyagi, Japan; Research Institute for Ulleung-do and Dok-do islands, Department of Biology, Kyungpook National University, Buk-gu, South Korea
| | - Van Tu Do
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | - Satoshi Chiba
- Center for Northeast Asian Studies, Tohoku University, Miyagi, Japan; Graduate School of Life Science, Tohoku University, Miyagi, Japan
| | - Takahiro Hirano
- Center for Northeast Asian Studies, Tohoku University, Miyagi, Japan; Graduate School of Life Science, Tohoku University, Miyagi, Japan; Biology Program, Faculty of Science, University of the Ryukyus, Okinawa, Japan
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Man NS, Lwin N, Sutcharit C, Panha S. Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species. Zookeys 2023; 1160:1-59. [PMID: 37180819 PMCID: PMC10172936 DOI: 10.3897/zookeys.1160.98022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 04/02/2023] [Indexed: 05/16/2023] Open
Abstract
This study presents a complete species list of the door snails inhabiting Myanmar, updated to now include 33 taxa, and provides taxonomic notes together with a re-description of the shell, radula, and genitalia for 13 species and subspecies, including Oospiraphilippiana, the type species of the genus Oospira. The snails previously treated as subspecies or synonyms of Oospiragracilior and Oospiramagna are reclassified and recognized as distinct species. The lectotype of Oospirainsignis has been clarified and an illustration of the original type specimen provided. A long-overlooked species, Oospiraandersoniana, has been collected and redescribed herein. Two new species from the limestone karsts in the Salween River Basin are introduced: Oospiraluneainopsis Man & Panha, sp. nov. and Oospirazediopsis Man & Panha, sp. nov. A synoptic view of all clausiliid taxa known from Myanmar is presented along with taxonomic information and distributional records. Photographs of the type materials for all taxa are provided for further comparison or, if unavailable, photographs of the examined specimens or the original figure from the literature.
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Affiliation(s)
- Nem Sian Man
- Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, ThailandChulalongkorn UniversityBangkokThailand
| | - Ngwe Lwin
- Fauna and Flora International, No. 35, 3rd Floor, Shan Gone Condo, Myay Ni Gone Market Street, Sanchaung Township, Yangon, MyanmarFauna and Flora InternationalYangonMyanmar
| | - Chirasak Sutcharit
- Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, ThailandChulalongkorn UniversityBangkokThailand
| | - Somsak Panha
- Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, ThailandChulalongkorn UniversityBangkokThailand
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3
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Sulikowska-Drozd A, Maltz TK, Janiszewska K. Flexible embryonic shell allies large offspring size and anti-predatory protection in viviparous snails. Sci Rep 2022; 12:17881. [PMID: 36289315 PMCID: PMC9605993 DOI: 10.1038/s41598-022-22651-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 10/18/2022] [Indexed: 01/20/2023] Open
Abstract
The evolutionary conflicts between viviparous reproductive mode and skeleton shape may occur whenever the space available for embryo development or delivery is limited by hard inflexible structures of a parent (bones, shell, etc.). In tetrapods, offspring size is at odds with female locomotion efficiency, which results in obstetric selection. We suggest a similar relationship for viviparous gastropods, where spacious canal needed for embryo delivery may interfere with anti-predatory role of narrow and toothed shell aperture. We explored this hypothesis in the group of viviparous land snails (Clausiliidae, subfamily Phaedusinae), known for complex apertural barriers protecting the shell interior. Most of the shell structure modifications we recorded facilitate the delivery of embryos but simultaneously reduce the safeguard of a narrow shell opening. However, we also observed highly flexible embryonic shells that may withstand squeezing between apertural barriers during birth. We investigated the microstructure of these flexible embryonic shells, compared to the typical hard shells of clausiliid embryos, which are rigid and unpliable already in the genital tract of the parent. Our results suggest that the unusual flexibility, which is related to a low number of organomineral layers in the shell, evolved in two phylogenetically distant lineages of Phaedusinae. This adaptation reduces mechanical constraints for birth of the neonates but allows to maintain the protective function of the apertural barriers.
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Affiliation(s)
- A. Sulikowska-Drozd
- grid.10789.370000 0000 9730 2769Department of Invertebrate Zoology and Hydrobiology, University of Lodz, Lodz, Poland
| | - T. K. Maltz
- grid.8505.80000 0001 1010 5103Museum of Natural History, University of Wrocław, Wrocław, Poland
| | - K. Janiszewska
- grid.413454.30000 0001 1958 0162Institute of Paleobiology, Polish Academy of Sciences, Warsaw, Poland
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Hwang C, Ger M, Wu S. Within‐island diversification in the land snail genus
Formosana
(Gastropoda, Clausiliidae) in Taiwan. ZOOL SCR 2022. [DOI: 10.1111/zsc.12557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Chung‐Chi Hwang
- Department of Life Sciences National University of Kaohsiung Kaohsiung Taiwan
| | - Mang‐Jye Ger
- Department of Life Sciences National University of Kaohsiung Kaohsiung Taiwan
| | - Shu‐Ping Wu
- Department of Earth and Life Sciences University of Taipei Taipei Taiwan
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Somoza-Valdeolmillos E, Gómez-Moliner BJ, Caro A, Chueca LJ, Martínez-Ortí A, Puente AI, Madeira MJ. Molecular phylogeny of the genus Chondrina (Gastropoda, Panpulmonata, Chondrinidae) in the Iberian Peninsula. Mol Phylogenet Evol 2022; 172:107480. [PMID: 35452839 DOI: 10.1016/j.ympev.2022.107480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 03/23/2022] [Accepted: 04/05/2022] [Indexed: 11/29/2022]
Abstract
Chondrina Reichenbach, 1828 is a highly diverse genus of terrestrial molluscs currently including 44 species with about 28 subspecific taxa. It is distributed through North Africa, central and southern Europe, from Portugal in the West to the Caucasus and Asia Minor in the East. Approximately 70% of the species are endemic to the Iberian Peninsula constituting its main center of speciation with 34 species. This genus includes many microendemic taxa, some of them not yet described, confined to limestone habitats (being strictly rock-dwelling species). They are distributed on rocky outcrops up to 2000 m.a.s.l. It is a genus of conical-fusiform snails that differ mainly in shell characters and in the number and position of teeth in their aperture. So far, molecular studies on Chondrina have been based exclusively on the mitochondrial Cytochrome Oxidase subunit I region (COI). These studies gave a first view of the phylogeny of the genus but many inner nodes were not statistically supported. The main objective of the study is to obtain a better understanding of the phylogeny and systematics of the genus Chondrina on the Iberian Peninsula, using multilocus molecular analysis. Partial sequences of the COI and 16S rRNA genes, as well as of the nuclear Internal Transcribed Spacer 1 (ITS1-5.8S) and Internal Transcribed Spacer 2 (5.8S-ITS2-28S) were obtained from individuals of all the extant Chondrina species known from the Iberian Peninsula. In addition to this, the newly obtained COI sequences were combined with those previously published in the GenBank. Phylogenetic relationships were inferred using maximum likelihood and Bayesian methods. The reconstructed phylogenies showed high values of support for more recent branches and basal nodes. Moreover, molecular species delimitation allowed to better definethe studied species and check the presence of new taxa.
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Affiliation(s)
- Eder Somoza-Valdeolmillos
- University of the Basque Country (UPV/EHU), Faculty of Pharmacy, Department of Zoology and Animal Cell Biology: Paseo de la Universidad, 7. 01006 Vitoria-Gasteiz, Spain; Biodiversity Research Group CIEA Lucio Lascaray, Avda. Miguel de Unamuno 3, 01006 Vitoria-Gasteiz, Álava, Spain.
| | - Benjamín J Gómez-Moliner
- University of the Basque Country (UPV/EHU), Faculty of Pharmacy, Department of Zoology and Animal Cell Biology: Paseo de la Universidad, 7. 01006 Vitoria-Gasteiz, Spain; Biodiversity Research Group CIEA Lucio Lascaray, Avda. Miguel de Unamuno 3, 01006 Vitoria-Gasteiz, Álava, Spain
| | - Amaia Caro
- University of the Basque Country (UPV/EHU), Faculty of Pharmacy, Department of Zoology and Animal Cell Biology: Paseo de la Universidad, 7. 01006 Vitoria-Gasteiz, Spain; Biodiversity Research Group CIEA Lucio Lascaray, Avda. Miguel de Unamuno 3, 01006 Vitoria-Gasteiz, Álava, Spain
| | - Luis J Chueca
- University of the Basque Country (UPV/EHU), Faculty of Pharmacy, Department of Zoology and Animal Cell Biology: Paseo de la Universidad, 7. 01006 Vitoria-Gasteiz, Spain; LOEWE-Centre for Translational Biodiversity Genomics (LOEWE-TBG), Senckenberg Nature Research Society, Senckenberganlage 25, 60325 Frankfurt am Main, Germany
| | - Alberto Martínez-Ortí
- Museu Valencià d'Història Natural, Apto. 8460, E-46018, Valencia and Universitat de València, Faculty of Pharmacy, Parasitology Departament, Burjassot, Valencia, (Spain)
| | - Ana I Puente
- University of the Basque Country (UPV/EHU), Faculty of Science and Technology, Department of Zoology and Animal Cell Biology: Barrio Sarriena s/n, 48015 Leioa, Spain
| | - María J Madeira
- University of the Basque Country (UPV/EHU), Faculty of Pharmacy, Department of Zoology and Animal Cell Biology: Paseo de la Universidad, 7. 01006 Vitoria-Gasteiz, Spain; Biodiversity Research Group CIEA Lucio Lascaray, Avda. Miguel de Unamuno 3, 01006 Vitoria-Gasteiz, Álava, Spain
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Waki T, Nakao M, Sasaki M, Ikezawa H, Inoue K, Ohari Y, Kameda Y, Asada M, Furusawa H, Miyazaki S. Brachylaima phaedusae n. sp. (Trematoda: Brachylaimidae) from door snails in Japan. Parasitol Int 2022; 86:102469. [PMID: 34534656 DOI: 10.1016/j.parint.2021.102469] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/03/2021] [Accepted: 09/11/2021] [Indexed: 11/15/2022]
Abstract
The metacercarial infections of door snails (Gastropoda: Clausiliidae) with unknown species of the genus Brachylaima (Trematoda: Brachylaimidae) have recently been reported in eastern Honshu and Kyushu, Japan. A large scale snail survey was carried out to clarify their taxonomic status. From the period of 2015 to 2020, a total of 1239 land snails (768 door snails and 471 others) were collected from 32 localities in Honshu, Shikoku, and Kyushu. The resulting trematode isolates were identified as Brachylaima sp. by mitochondrial DNA barcoding. The sporocysts were found only a few from Megalophaedusa sublunellata (Clausiliidae), Tauphaedusa subaculus (Clausiliidae), and Aegista trochula (Camaenidae), while the metacercariae were frequently detected from 14 species of Clausiliidae and 2 species of other families. Although Brachylaima sp. showed a broad range of intermediate hosts, door snails seem to be very important to drive the life cycle. The gravid adults of Brachylaima sp. was experimentally raised from metacercariae using immunosuppressed mice. Morphological, phylogenetical, and ecological considerations prompted us to propose Brachylaima phaedusae n. sp. for this unknown species. The definitive hosts of the new species are completely unknown. The wide geographic distribution and high genetic diversity of the new species suggest a possibility that the definitive host is ground-foraging birds, which prefer door snails.
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Affiliation(s)
- Tsukasa Waki
- Faculty of Science, Toho University, 2-2-1, Miyama, Funabashi-city, Chiba 274-8510, Japan.
| | - Minoru Nakao
- Department of Parasitology, Asahikawa Medical University, Midorigaoka-Highashi 2-1, Asahikawa 078-8510, Japan
| | - Mizuki Sasaki
- Department of Parasitology, Asahikawa Medical University, Midorigaoka-Highashi 2-1, Asahikawa 078-8510, Japan
| | - Hiromi Ikezawa
- Ibaraki Nature Museum, 700 Osaki, Bando, Ibaraki 306-0622, Japan
| | - Ken Inoue
- Laboratory of Parasitology, Joint Graduate School of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan; Laboratory of Nematology, Department of Applied Biological Sciences, Saga University, 1 Honjo, Saga-city, Saga 840-8502, Japan; Saga Prefectural Meat Sanitary Inspection Station, 4127 Minamitaku, Taku-city, Saga 846-0024, Japan
| | - Yuma Ohari
- Laboratory of Parasitology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku Sapporo, Hokkaido 060-0818, Japan
| | - Yuichi Kameda
- Department of Anthropology, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan
| | - Masahito Asada
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, 13, Nishi 2 Sen, Inada, Obihiro, Hokkaido 080-8555, Japan
| | - Haruki Furusawa
- Faculty of Science, Toho University, 2-2-1, Miyama, Funabashi-city, Chiba 274-8510, Japan
| | - Shinsuke Miyazaki
- Kyushu Mollusc Study Society, 4-21-17 Konan, Miyazaki, Miyazaki 880-0944, Japan
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Hirano T, Saito T, Viktor von Oheimb P, C M von Oheimb K, Van Do T, Yamazaki D, Kameda Y, Chiba S. Patterns of diversification of the operculate land snail genus Cyclophorus (Caenogastropoda: Cyclophoridae) on the Ryukyu Islands, Japan. Mol Phylogenet Evol 2022; 169:107407. [PMID: 35031464 DOI: 10.1016/j.ympev.2022.107407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 12/14/2021] [Accepted: 01/06/2022] [Indexed: 11/24/2022]
Abstract
The Ryukyu Islands, an island chain in southwestern Japan, originated from land masses that separated from the Eurasian continent due to the formation of sea barriers about 1.55 million years ago. In this study, we investigated the phylogenetic relationships of the operculate land snail genus Cyclophorus (Caenogastropoda: Cyclophoridae) in the Ryukyu Archipelago and surrounding regions based on DNA sequence data. According to our results, all studied Cyclophorus specimens from Japan form a monophyletic group containing eight subclades. Six of these subclades were found only on the Ryukyu Islands. On most islands of the Ryukyu Archipelago, no more than one Cyclophorus subclade was recorded, which may be due to limited ecological niche space and competition. No subclade was found to occur on both sides of the Watase Line, a regional zoogeographical boundary. Divergence times were estimated based on a time-calibrated phylogeny. We found that multiple splits among the Japanese Cyclophorus subclades predate the emergence of major sea barriers in the Ryukyu Archipelago. Vicariance due to sea barrier formation, as assumed for many other taxa from the region, was thus likely not the main driver for subclade divergence in these snails. Instead, certain geographical features might have shaped the diversification of subclades prior to sea barrier formation. Given that Cyclophorus populations were also present on islands that have never been connected to other land masses, the snails must have colonized them via oversea dispersal. As not all nominal taxa corresponded to monophyletic groups, our molecular phylogenetic approach revealed that a taxonomic revision of the Japanese Cyclophorus fauna is necessary. The eight subclades may be regarded as potential species-level groups based on COI p-distances. A canonical discriminant analysis using shell morphological data revealed slight differences among the subclades.
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Affiliation(s)
- Takahiro Hirano
- Centre of Northeast Asian Studies, Tohoku University, Sendai, Miyagi, Japan; Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan.
| | - Takumi Saito
- Department of Biology, Faculty of Science, Toho University, Funabashi, Chiba, Japan
| | - Parm Viktor von Oheimb
- Museum für Naturkunde - Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany
| | - Katharina C M von Oheimb
- Museum für Naturkunde - Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany
| | - Tu Van Do
- Department of Aquatic Ecology and Water Environment, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Ha Noi, Vietnam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam
| | - Daishi Yamazaki
- Centre of Northeast Asian Studies, Tohoku University, Sendai, Miyagi, Japan
| | - Yuichi Kameda
- Center for Molecular Biodiversity Research, National Museum of Nature and Science, Tokyo, Tsukuba, Ibaraki, Japan
| | - Satoshi Chiba
- Centre of Northeast Asian Studies, Tohoku University, Sendai, Miyagi, Japan; Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
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Sulikowska-Drozd A, Hwang CC, Páll-Gergely B, Wu SP. Giants of Taiwan – comparative analysis of life history traits in four land snail species Changphaedusa horikawai, Formosana swinhoei, F. formosensis, and Formosana sp. (Stylommatophora: Clausiliidae: Phaedusinae). MOLLUSCAN RESEARCH 2021. [DOI: 10.1080/13235818.2021.1984189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Anna Sulikowska-Drozd
- Department of Invertebrate Zoology and Hydrobiology, University of Lodz, Lodz, Poland
| | - Chung-Chi Hwang
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Barna Páll-Gergely
- Plant Protection Institute, Centre for Agricultural Research, Budapest, Hungary
| | - Shu-Ping Wu
- Department of Earth and Life Science, University of Taipei, Taipei, Taiwan
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9
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Sulikowska-Drozd A, Mumladze L. Life histories of three Serrulinini species (Stylommatophora: Clausiliidae) from Georgia kept under laboratory conditions. FOLIA MALACOLOGICA 2021. [DOI: 10.12657/folmal.029.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Serrulinini, a small relict group of clausiliids occurring in coastal regions of the Black and Caspian Seas and the Caucasus, are currently classified within the Phaedusinae, however paraphyletic origin of the Serrulinini is also widely debated with Pontophaedusa funiculum (Mousson) being most phylogenetically distinct from other taxa. As life history data may have taxonomical value, we conducted long-term observations in laboratory culture to assess reproductive modes, fecundity and growth pattern of three serruline species. Caspiophaedusa perlucens (O. Boettger) and Pravispira semilamellata (Mousson) produced partly calcified eggs with regular, spiral arrangement of crystals; their juveniles hatched after 17–18 days; the generation time was long and significantly exceeded one year. P. funiculum laid heavily calcified, elongated eggs. The incubation time in P. funiculum varied depending on the humidity, with a tendency towards short embryo-retention. The generation time in P. funiculum was one year. In all the studied species, egg calcification differed from the pattern common for other oviparous Phaedusinae which produce partly calcified eggs with homogeneous distribution of crystals. The calcite crystal distribution in the egg membranes reported here for the Serrulinini suggests some potential of these characters in phylogenetic context.
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Chen ZY, Ouyang KC. A new species and new genus of Clausiliidae (Gastropoda: Stylommatophora) from south-eastern Hubei, China. FOLIA MALACOLOGICA 2021. [DOI: 10.12657/folmal.029.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A new clausiliid species, in a newly proposed genus, Probosciphaedusa mulini gen. et sp. nov. is described from south-eastern Hubei, China. The new taxon is characterised by having thick and cylindrical apical whorls, a strongly expanded lamella inferior and a lamella subcolumellaris that together form a tubular structure at the base of the peristome, and a dorsal lunella connected to both the upper and the lower palatal plicae. Illustrations of the new species are provided.
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11
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Mamos T, Uit de Weerd D, von Oheimb PV, Sulikowska-Drozd A. Evolution of reproductive strategies in the species-rich land snail subfamily Phaedusinae (Stylommatophora: Clausiliidae). Mol Phylogenet Evol 2020; 158:107060. [PMID: 33383174 DOI: 10.1016/j.ympev.2020.107060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 10/22/2022]
Abstract
Most of the present knowledge on animal reproductive mode evolution, and possible factors driving transitions between oviparity and viviparity is based on studies on vertebrates. The species rich door snail (Clausiliidae) subfamily Phaedusinae represents a suitable and unique model for further examining parity evolution, as three different strategies, oviparity, viviparity, and the intermediate mode of embryo-retention, occur in this group. The present study reconstructs the evolution of reproductive strategies in Phaedusinae based on time-calibrated molecular phylogenetics, reproductive mode examinations and ancestral state reconstruction. Our phylogenetic analysis employing multiple mitochondrial and nuclear markers identified a well-supported clade (including the tribes Phaedusini and Serrulinini) that contains species exhibiting various reproductive strategies. This clade evolved from an oviparous most recent common ancestor according to our reconstruction. All non-oviparous taxa are confined to a highly supported subclade, coinciding with the tribe Phaedusini. Both oviparity and viviparity occur frequently in different lineages of this subclade that are not closely related. During Phaedusini diversification, multiple transitions in reproductive strategy must have taken place, which could have been promoted by a high fitness of embryo-retaining species. The evolutionary success of this group might result from the maintenance of various strategies.
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Affiliation(s)
- Tomasz Mamos
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Invertebrate Zoology and Hydrobiology, Banacha 12/16, 90-237 Lodz, Poland; University of Basel, Zoological Institute, Vesalgasse 1, 4051 Basel, Switzerland
| | - Dennis Uit de Weerd
- Faculty of Science, Department of Environmental Sciences, Open Universiteit, P.O. Box 2960, NL-6401 DL Heerlen, the Netherlands; Naturalis Biodiversity Center, P.O. Box 9517, NL-2300 RA Leiden, the Netherlands
| | - Parm Viktor von Oheimb
- Life Sciences Department, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Museum für Naturkunde - Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
| | - Anna Sulikowska-Drozd
- University of Lodz, Faculty of Biology and Environmental Protection, Department of Invertebrate Zoology and Hydrobiology, Banacha 12/16, 90-237 Lodz, Poland.
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12
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Páll-Gergely B, Sajan S, Tripathy B, Meng K, Asami T, Ablett JD. Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue. Zookeys 2020; 981:1-220. [PMID: 33199958 PMCID: PMC7644702 DOI: 10.3897/zookeys.981.53583] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 08/15/2020] [Indexed: 11/30/2022] Open
Abstract
412 species-group names (including 11 replacement names), and 14 genus-group names of the Alycaeidae have been introduced to date. Type materials of 85% (336) of the known species and subspecies were examined, a further 5% (19) of the taxa were studied using available non-type material, and for another 6% (22) the original descriptions were sufficiently detailed to evaluate their taxonomic status. Only 3% of the taxa (12) could not be examined. Special attention was paid to the sculpture of the embryonic whorls and the sutural tube-microtunnel system in order to provide a novel classification for this group. In this study 363 taxa (320 species or 43 subspecies) are accepted within the family Alycaeidae. Of these, 22 have been described by the lead author and his coauthors in previous publications. In addition, there are 18 species that were formerly classified in Cycloryx and now belong to Pincerna due to its synonymy with Cycloryx. Among the remaining 323 species, 209 (65%) are transferred here to another genus, whilst 114 (35%) have remained in their original genus. Seven genera are accepted. While some questions (e.g., the distinction between Pincerna and Alycaeus) remained unanswered, this revision made three main achievements: (1) The Dicharax species were identified based on the absence of spiral striation on the entire shell; (2) the Metalycaeus species were identified based on the spiral striation of the protoconch; (3) and Stomacosmethis was separated from Alycaeus based on the extremely short sutural tube. Five nominal species are being synonymised with other species, and eight species are now treated as subspecies. The following replacement names are proposed: Dioryxurnulaniosiensis Páll-Gergely, nom. nov. for Alycaeusurnulavar.daflaensis Godwin-Austen, 1914; Dioryxurnularotundus Páll-Gergely, nom. nov. for Alycaeusurnulavar.globosus Godwin-Austen, 1914; Pincernacrenilabrisjuttingae Páll-Gergely, nom. nov. for Alycaeuscrenilabrislaevis van Benthem Jutting, 1959; Pincernacrenilabriskorintjiensis Páll-Gergely, nom. nov. for Alycaeuscrenilabrislatecostatus van Benthem Jutting, 1959; Dicharaxconicusjatingaensis Páll-Gergely, nom. nov. for Alycaeusconicusvar.nanus Godwin-Austen, 1914; Metalycaeusgodwinausteni Páll-Gergely, nom. nov. for Alycaeusneglectus Godwin-Austen, 1914; and finally Metalycaeussuhajdai Páll-Gergely, nom. nov. for Alycaeusvarius Godwin-Austen, 1914.
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Affiliation(s)
- Barna Páll-Gergely
- Plant Protection Institute, Centre for Agricultural Research, Herman Ottó út 15, Budapest, H-1022, Hungary Plant Protection Institute, Centre for Agricultural Research of the Hungarian Academy of Sciences (MTA) Budapest Hungary
| | - Sheikh Sajan
- Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India Zoological Survey of India Kolkata India.,Wildlife Institute of India, Chandrabani, Dehradun 248 002, Uttarakhand, India Wildlife Institute of India Dehradun India
| | - Basudev Tripathy
- Zoological Survey of India, Prani Vigyan Bhawan, M Block, New Alipore, Kolkata 700053, West Bengal, India Zoological Survey of India Kolkata India
| | - Kaibaryer Meng
- National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing, China Institute of Zoology, Chinese Academy of Sciences Beijing China
| | - Takahiro Asami
- Department of Biology, Shinshu University, Matsumoto 390-8621, Japan Shinshu University Matsumoto Japan
| | - Jonathan D Ablett
- Mollusca Section, Invertebrates Division, Department of Life Sciences, The Natural History Museums, London SW7 5BD, United Kingdom Natural History Museum London United Kingdom
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Hwang CC, Zhou WC, Ger MJ, Guo Y, Qian ZX, Wang YC, Tsai CL, Wu SP. Biogeography of land snail genus Acusta (Gastropoda: Camaenidae): Diversification on East Asian islands. Mol Phylogenet Evol 2020; 155:106999. [PMID: 33130300 DOI: 10.1016/j.ympev.2020.106999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 09/12/2020] [Accepted: 10/25/2020] [Indexed: 11/18/2022]
Abstract
East Asia has highly diverse and endemic biota due to its complex geological and climatic history and its diversified topography. The continental and insular distributions of land snail genus Acusta in East Asia provide a good opportunity to compare the evolutionary processes in this group under different biogeographical conditions. In this study, we inferred the evolutionary history of the land snail genus Acusta by a molecular phylogeny and investigated how the palaeogeographic events shaped species diversity and the distribution of the Acusta genus within the island arc. A concatenated dataset generated from sequences of one nuclear (ITS2) and two mitochondrial (16S, COI) gene fragments, include most of nominal taxa of the genus, four related species and one outgroup. We constructed the phylogeny and the evolutionary history of the genus through maximum-likelihood and Bayesian inference methods, using a Bayesian molecular clock and ancestral range estimation. Our results suggested that currently recognized species in Acusta are polyphyletic. The traditionally accepted concept of the affinity of Acusta and Bradybaena is not supported. The hypothesis of colonization via land bridges during the Pleistocene glaciations for the biota of East Asian islands is not supported. Instead, the origin and diversification of the genus Acusta was dated to the late Miocene-Pliocene from an area around North and Northeast China to South China and East Asian islands Three major evolutionary lineages were identified. Two of the major lineages demonstrate distinct evolutionary histories, as sympatric speciation is the major speciation process for the continental clade, while the insular clade originated from founder events. Taiwan functioned as an important source of diversification for species on the East Asian islands possibly through passive dispersal of different mechanisms. The sea level fluctuations caused by the Pleistocene glacial cycles play a role in the subsequent dispersion and diversification of species of the continental clade, such as the more recent range expansion of A. redfieldi from South China to Taiwan and Japan.
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Affiliation(s)
- Chung-Chi Hwang
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Wei-Chuan Zhou
- Key Laboratory of Molluscan Quarantine and Identification of AQSIQ, Fujian Entry-Exit Inspection & Quarantine Bureau, Fuzhou, Fujian, China
| | - Mang-Jye Ger
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Yunhai Guo
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
| | - Zhou-Xing Qian
- Zhejiang Museum of Natural History, Hangzhou, Zhejiang, China
| | - Yen-Chieh Wang
- Department of Bioresources, Dayeh University, Changhua, Taiwan
| | - Chi-Li Tsai
- Endemic Species Research Institute, Nantou, Taiwan
| | - Shu-Ping Wu
- Department of Earth and Life Sciences, University of Taipei, Taipei, Taiwan.
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14
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Sulikowska-Drozd A, Duda P, Janiszewska K. Micro-CT screening of old shell collections helps to understand the distribution of viviparity in the highly diversified clausiliid clade of land snails. Sci Rep 2020; 10:60. [PMID: 31919454 PMCID: PMC6952383 DOI: 10.1038/s41598-019-56674-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 12/11/2019] [Indexed: 11/17/2022] Open
Abstract
Current zoological research may benefit in many ways from the study of old collections of shells. These collections may provide materials for the verification of broad zoogeographical and ecological hypotheses on the reproduction of molluscs, as they include records from many areas where sampling is currently impossible or very difficult due to political circumstances. In the present paper we present data on viviparous and embryo-retention reproductive modes in clausiliid land snails (subfamily Phaedusinae) acquired from specimens collected since the nineteenth century in the Pontic, Hyrcanian, and East and Southeast Asian regions. X-ray imaging (micro-CT) enabled relatively quick screening of more than 1,000 individuals classified within 141 taxa, among which we discovered 205 shells containing embryos or eggs. Gravid individuals were found to belong to 55 species, representing, for some of these species, the first indication of brooding reproductive strategy.
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Affiliation(s)
- Anna Sulikowska-Drozd
- University of Lodz, Department of Invertebrate Zoology and Hydrobiology, Banacha Str. 12/16, 90-237, Lodz, Poland.
| | - Piotr Duda
- University of Silesia in Katowice, Faculty of Science and Technology, Będzińska Str. 39, 41-200, Sosnowiec, Poland
| | - Katarzyna Janiszewska
- Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818, Warsaw, Poland
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Stworzewicz E, Sulikowska-Drozd A. New records of Clausiliidae (Mollusca: Gastropoda) in the Democratic People’s Republic of Korea with notes on their reproductive strategy. FOLIA MALACOLOGICA 2020. [DOI: 10.12657/folmal.028.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Grego J, Szekeres M. Two new species of Clausiliidae (Gastropoda: Pulmonata) from Yunnan Province, southern China. FOLIA MALACOLOGICA 2019. [DOI: 10.12657/folmal.027.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Waki T, Nakao M, Hayashi K, Ikezawa H, Tsutumi N. MOLECULAR AND MORPHOLOGICAL DISCRIMINATION OF DICROCOELIID LARVAE (TREMATODA: DIGENEA) FROM TERRESTRIAL MOLLUSKS IN JAPAN. J Parasitol 2018; 104:660-670. [PMID: 30117780 DOI: 10.1645/18-24] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Trematodes of the family Dicrocoeliidae commonly use terrestrial mollusks as the first intermediate host. Despite the abundant studies on the adult worms in birds and mammals, few reports exist on their larval stage in snail intermediate hosts. A present survey of mollusks in Japan led us to the discovery of dicrocoeliid sporocysts with cercariae in 16 out of 303 individuals, encompassing eight snail species and one slug species. A DNA barcoding based on sequencing of mitochondrial cytochrome c oxidase subunit 1 showed that the larvae consisted of five species. Phylogenetic trees of nuclear 18S and 28S ribosomal DNAs confirmed the five species to be members of the Dicrocoeliidae. These were temporarily termed dicrocoeliid spp. 1 to 5, since conclusive identification was impossible without adult worms. These unknown species were phylogenetically related to each other, except sp. 5. The phylogenetic trees demonstrated close genetic relationships between sp. 3 and the genus Lutztrema, and between sp. 5 and the genus Lyperosomum. The phylogenetic analysis also suggested that a division into the subfamilies Dicrocoeliinae and Leipertrematinae is a wrong classification due to the paraphyly of the Dicrocoeliinae. Morphological characterization of the cercariae and their DNA barcodes provide a primary platform for differentiating dicrocoeliids from various mollusks in Japan. The DNA barcodes, in particular, will enable tracing the parasite life cycles, in case of finding metacercariae and adults from presently unknown hosts.
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Affiliation(s)
- Tsukasa Waki
- * Meguro Prasitological Museum Meguro Prasitological Museum
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Sulikowska-Drozd A, Chiżyńska A, Maltz TK. The reproductive strategies of clausiliid land snails from Northern Vietnam (Gastropoda: Stylommatophora). J NAT HIST 2018. [DOI: 10.1080/00222933.2018.1497211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Anna Sulikowska-Drozd
- Department of Invertebrate Zoology and Hydrobiology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Agata Chiżyńska
- Department of Invertebrate Zoology and Hydrobiology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
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