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Li F, Li W, Zhang Y, Wang A, Liu C, Gu Z, Yang Y. The molecular phylogeny of Caenogastropoda (Mollusca, Gastropoda) based on mitochondrial genomes and nuclear genes. Gene 2024; 928:148790. [PMID: 39053659 DOI: 10.1016/j.gene.2024.148790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 07/02/2024] [Accepted: 07/19/2024] [Indexed: 07/27/2024]
Abstract
Comprising about 60 % of gastropod diversity, caenogastropods display almost all kinds of shell forms and include many commercially important marine groups. Although the monophyly of Caenogastropoda has been widely accepted, thier internal phylogenetic relationships remain unclear. In the present study, a total of 27 caenogastropods belonging to eight superfamilies were sequenced and used for phylogenetic reconstruction. All newly sequenced mitogenomes adhered to the consensus gene order of caenogastropods, except for those of Vanikoroidea, Vermetoidea and Cerithioidea, which involved protein-coding genes. The reconstructed mitogenomic phylogeny suggested the monophylies of Architaenioglossa, Sorbeoconcha, Hypsogastropoda and the siphonate clade. The present study also identified a close affinity among Cypraeoidea, Ficoidea, Tonnoidea, and Neogastropoda, supported by the presence of a pleurembolic proboscis. The monophyly of Neogastropoda was not supported, as Cancellariidae was found to be sister to the limpet-shaped group Calyptraeoidea, and (Tonooidea + Ficoidea) were sister to the remaining neogastropods. This study provides important information for better understanding the evolution of caenogastropods, as well as for the protection and utilization of these diverse and economically significant marine resources.
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Affiliation(s)
- Fengping Li
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China
| | - Wanying Li
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China
| | - Yu Zhang
- Sanya Oceanographic Institution, Ocean University of China, Sanya, China
| | - Aimin Wang
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China
| | - Chunsheng Liu
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China
| | - Zhifeng Gu
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China
| | - Yi Yang
- School of Marine Biology and Fisheries, Hainan University, Haikou 570228, China; Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China.
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Vermeij GJ, DeVries TJ, Griffin M, Nielsen SN, Ochoa D, Rivadeneira MM, Salas‐Gismondi R, Valdovinos F. The temperate marine Peruvian Province: How history accounts for its unusual biota. Ecol Evol 2024; 14:e70048. [PMID: 39041018 PMCID: PMC11260884 DOI: 10.1002/ece3.70048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/27/2024] [Accepted: 07/08/2024] [Indexed: 07/24/2024] Open
Abstract
The Peruvian Province, from 6° S in Peru to 42° S in Chile, is a highly productive coastal marine region whose biology and fossil record have long been studied separately but never integrated. To understand how past events and conditions affected today's species composition and interactions, we examined the role of extinction, colonization, geologic changes to explain previously unrecognized peculiar features of the biota and to compare the Peruvian Province's history to that of other climatically similar temperate coasts. We synthesized all available data on the benthic (or benthically feeding) biota, with emphasis on fossilizable taxa, for the interval from the Miocene (23-5.4 Ma) and Pliocene (5.4-2.5 Ma) to the present. We outline the history of ecological guilds including primary producers, herbivores, predators, and suspension-feeders and document patterns of extinction, colonization, and geographic restriction. We identify twelve unusual attributes of the biota, most of which are the result of repeated episodes of extinction. Several guilds present during the Miocene and Pliocene are not represented in the province today, while groups such as kelps and perhaps intertidal predatory sea stars are relative newcomers. Guilds on soft bottoms and in sheltered habitats were severely affected by extinction, whereas those on hard bottoms were most affected by colonists and held their own in diversity. The Peruvian Province has not served as a biogeographic refuge, in contrast to the coasts of Australasia and Argentina, where lineages no longer present in the Peruvian Province survive. The loss of sheltered habitats since the Pliocene explains many of the present-day peculiarities of the biota. The history of the province's biota explains its unique attributes. High productivity, a rich Southern Hemisphere heritage, and colonization from the north account for the present-day composition and unusual characteristics of the biota.
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Affiliation(s)
- Geerat J. Vermeij
- Department of Earth and Planetary SciencesUniversity of California, DavisDavisCaliforniaUSA
| | - Thomas J. DeVries
- Burke Museum of Natural History and CultureUniversity of WashingtonSeattleWashingtonUSA
| | - Miguel Griffin
- División Paleozoología InvertebradosMuseo de La PlataLa PlataArgentina
| | - Sven N. Nielsen
- Instituto de Ciencias de la TierraUniversidad Austral de ChileValdiviaChile
| | - Diana Ochoa
- Centro de Investigación Para el Desarrollo Integral y Sostenible (CIDIS)Universidad Peruana Cayetano HeredioLimaPeru
| | - Marcelo M. Rivadeneira
- Centro de Estudios Avanzados en Zonas ÁridasCoquimboChile
- Departamento de Biologia Marina, Facultad de Ciencias del MarUniversidad Catolica del NorteAntofagastaChile
| | - Rodolfo Salas‐Gismondi
- Departamento de Paleontología de VertebradosMuseo de Historia Natural‐Universidad Nacional Mayor San MarcosLimaPeru
| | - Fernanda Valdovinos
- Department of Environmental Science and PolicyUniversity of California, DavisDavisCaliforniaUSA
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Fedosov AE, Zaharias P, Lemarcis T, Modica MV, Holford M, Oliverio M, Kantor YI, Puillandre N. Phylogenomics of Neogastropoda: the backbone hidden in the bush. Syst Biol 2024:syae010. [PMID: 38456663 DOI: 10.1093/sysbio/syae010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Indexed: 03/09/2024] Open
Abstract
The molluscan order Neogastropoda encompasses over 15,000 almost exclusively marine species playing important roles in benthic communities and in the economies of coastal countries. Neogastropoda underwent intensive cladogenesis in early stages of diversification, generating a 'bush' at the base of their evolutionary tree, that has been hard to resolve even with high throughput molecular data. In the present study to resolve the bush, we use a variety of phylogenetic inference methods and a comprehensive exon capture dataset of 1,817 loci (79.6% data occupancy) comprising 112 taxa of 48 out of 60 Neogastropoda families. Our results show consistent topologies and high support in all analyses at (super)family level, supporting monophyly of Muricoidea, Mitroidea, Conoidea, and, with some reservations, Olivoidea and Buccinoidea. Volutoidea and Turbinelloidea as currently circumscribed are clearly paraphyletic. Despite our analyses consistently resolving most backbone nodes, three prove problematic: First, uncertain placement of Cancellariidae, as the sister group to either a Ficoidea-Tonnoidea clade, or to the rest of Neogastropoda, leaves monophyly of Neogastropoda unresolved. Second, relationships are contradictory at the base of the major 'core Neogastropoda' grouping. Third, coalescence-based analyses reject monophyly of the Buccinoidea in relation to Vasidae. We analysed phylogenetic signal of targeted loci in relation to potential biases, and we propose most probable resolutions in the latter two recalcitrant nodes. The uncertain placement of Cancellariidae may be explained by orthology violations due to differential paralog loss shortly after the whole genome duplication, which should be resolved with a curated set of longer loci.
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Affiliation(s)
- Alexander E Fedosov
- Department of Zoology, Swedish Museum of Natural History, Box 50007, 10405, Stockholm, Sweden
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Paul Zaharias
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Thomas Lemarcis
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Maria Vittoria Modica
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Mandë Holford
- Department of Chemistry, Hunter College, Belfer Research Building, City University of New York, New York, USA
- Department of Invertebrate Zoology, the American Museum of Natural History, New York, USA
- PhD programs in Biology, Biochemistry, and Chemistry, The Graduate Center of the City University of New York, New York, USA
| | - Marco Oliverio
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome. Zoology, Rome, Italy
| | - Yuri I Kantor
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - Nicolas Puillandre
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
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Ishiyama G, Kantor YI, Kano Y. Systematics and Distributions of Upper Bathyal Species in Bathyancistrolepis, a Deep-Sea Whelk Genus Endemic to the Northwest Pacific (Gastropoda: Buccinidae). Zoolog Sci 2023; 40:486-496. [PMID: 38064376 DOI: 10.2108/zs230067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/19/2023] [Indexed: 12/18/2023]
Abstract
The deep-sea buccinid snail genus Bathyancistrolepis is redefined based on the reconstruction of a molecular phylogeny and morphological examination of shell and radular characters. This genus is distinguished from other genera of the subfamily Parancistrolepidinae with a combination of shell traits, including (1) a low spire, (2) sharp, carinate spiral cords or keels and (3) a long, curved siphonal canal, but not with a difference in radular morphology as suggested by previous authors. Three allopatric or parapatric species are recognized in the upper bathyal (447-2057 m) waters around Japan and Taiwan: B. tokoyodaensis from off Hokkaido to Sagami Bay in the Northwest Pacific, B. trochoidea off Kumano-nada to Miyazaki in the Northwest Pacific and along Nansei Islands in the East China Sea, and B. taiwanensis sp. nov. in the South China Sea. These species bear large paucispiral protoconchs that are indicative of benthic early development without a pelagic larval period, and hence low dispersal capability. Seafloor topography seems to have acted as a barrier for their dispersal; the range of B. tokoyodaensis supports the previous finding that Izu Peninsula delimits westward distribution of bathyal gastropod species of boreal origins.
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Affiliation(s)
- Genki Ishiyama
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan,
| | - Yuri I Kantor
- A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninski Moscow 119071, Russia
| | - Yasunori Kano
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan
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McLean JH, Clark RN. Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska. Zootaxa 2023; 5351:151-201. [PMID: 38221493 DOI: 10.11646/zootaxa.5351.2.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Indexed: 01/16/2024]
Abstract
Seven new genera and thirty-four new species of gastropods in the in the family Buccinidae, are described from the Aleutian Islands. The new taxa represent five subfamilies: Parancistrolepidinae Habe, 1972: Boreancistrolepis excelsus n. gen. & n. sp. Beringiinae Golikov & Starabogatov, 1975: Aleutijapelion mirandus n. gen. & n. sp.; Beringius nearensis n. sp., B. amliensis n. sp., B. bisulcatus n. sp., B. kiskensis n. sp., B. stanchfieldi n. sp., B. frausseni n. sp., B. aurulentus n. sp., B. maristempestus n. sp., B. undataformis n. sp.; Exiloberingius exiguus n. gen. & n. sp. Neptuneinae Stimpson, 1865: Aulacofusus canaliculatus n. sp., A. tanagaensis n. sp.; Neptunea aleutica n. sp., N. baxteri n. sp., N. dominator n. sp., N. petrelensis n. sp., N. quhmax n. sp., N. vesteraalen n. sp.; N. harrisoni n. sp., N. jewetti n. sp., Laevisipho galaxaios n. gen & n. sp., L. kessleri n. sp.; Volutopsiinae: Volutopsius nanus n. sp., Volutopsius gracilis n. sp.; Crebrivolutopsius labidentatus n. gen. & n. sp. Buccininae Rafinesque, 1815: Aleutibuccinum n. gen.; Castaneobuccinum orri n. gen. & n. sp., C. lauthi, n. sp., C. clinopsis n. sp., C. pagodaformis n. sp.; Sulcosinus carinatus n. sp.; Buccinum lanatum n. sp.; and Buccinum katharinae n. gen. & n. sp. The new genera and species are distinguished by the morphological characters of the shells and radulae.
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Affiliation(s)
- James H McLean
- Natural History Museum of Los Angeles County; 900 Exposition Boulevard; Los Angeles; California 90007 USA.
| | - Roger N Clark
- Natural History Museum of Los Angeles County; 900 Exposition Boulevard; Los Angeles; California 90007 USA; Santa Barbara Museum of Natural History; 2559 Puesta del Sol Road; Santa Barbara; California 93105 USA.
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KANTOR YURI, ZVONAREVA SOFIA, KRYLOVA ELENA. New species of the genus Astyris (Gastropoda: Neogastropoda: Buccinoidea: Columbellidae) from the vicinity of hydrothermal vents of the Piip Volcano, southwestern Bering Sea. Zootaxa 2023; 5263:441-450. [PMID: 37044976 DOI: 10.11646/zootaxa.5263.3.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Indexed: 04/08/2023]
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7
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deMaintenon M, Strong EE. Molecular phylogeny of Columbellidae (Gastropoda: Neogastropoda). PeerJ 2022; 10:e13996. [PMID: 36345482 PMCID: PMC9636871 DOI: 10.7717/peerj.13996] [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: 03/02/2022] [Accepted: 08/12/2022] [Indexed: 01/18/2023] Open
Abstract
The neogastropod family Columbellidae is a highly successful group of small, primarily epibenthic marine snails distributed worldwide and most abundant in the tropics. The great diversity of the group makes them attractive for studying evolutionary shifts in gastropod anatomy, morphology, ecology and diversity. The existing classification of the family has been based to a large degree on the morphology of the shell and radula. Indeed, membership in the family is traditionally confirmed using the unique morphology of the radula. To reconstruct columbellid phylogeny and assess monophyly of the group, we assembled a multilocus dataset including five mitochondrial and nuclear genes, for 70 species in 31 genera. Phylogenetic analyses using Bayesian inference and maximum likelihood are not well enough resolved to support a subfamilial classification, but do support the monophyly of the family and of several well-defined genera and supra-generic groupings. Two of the most diverse nominal genera, Mitrella and Anachis, are supported as highly polyphyletic. Overall, the resulting topologies indicate that the generic and subfamilial classification is in need of extensive revision but that phylogenomic data are needed to resolve columbellid relationships.
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Affiliation(s)
| | - Ellen E. Strong
- Department of Invertebrate Zoology, Smithsonian Institution, National Museum of Natural History, Washington, D.C., USA
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Sansone C, Balestra C, Pistelli L, Del Mondo A, Osca D, Brunet C, Crocetta F. A Comparative Analysis of Mucus Immunomodulatory Properties from Seven Marine Gastropods from the Mediterranean Sea. Cells 2022; 11:cells11152340. [PMID: 35954185 PMCID: PMC9367618 DOI: 10.3390/cells11152340] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/07/2022] [Accepted: 07/28/2022] [Indexed: 12/10/2022] Open
Abstract
The treatment of inflammatory and immune-related diseases due to dysfunctioning of the immune system necessitates modulation of the immune response through immunomodulatory compounds. Marine environments are considered as a new frontier for health benefit product implementations. Marine biodiversity is still a low explored resource, despite it is expected to represent an important platform for chemical bioactive compounds. Within the phylum Mollusca, gastropods are known to synthetize mucus, the latter presenting relevant bioactive properties, e.g., related to immunomodulant molecules able to activate the innate and acquired immune system. This study proposes a bioprospecting of the immunomodulant activity of mucus isolated from seven common gastropod species from the Gulf of Naples (Mediterranean Sea). Results showed that not all mucus displayed a significant cytotoxic activity on the two human cancer cell lines A549 and A2058. On the other hand, the mucus from Bolinus brandaris was strongly bioactive and was therefore thoroughly investigated at cellular, molecular, and protein levels on the human monocytes U937 line. It can conclusively induce monocyte differentiation in vitro and significantly stimulate natural immunity response.
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Affiliation(s)
- Clementina Sansone
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy; (C.B.); (L.P.); (A.D.M.); (C.B.)
- Institute of Biomolecular Chemistry, National Council of Reasearch, Via Campi Flegrei 34, I-80078 Pozzuoli, Italy
- Correspondence:
| | - Cecilia Balestra
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy; (C.B.); (L.P.); (A.D.M.); (C.B.)
- National Institute of Oceanography and Applied Geophysics—OGS, I-34100 Trieste, Italy
| | - Luigi Pistelli
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy; (C.B.); (L.P.); (A.D.M.); (C.B.)
| | - Angelo Del Mondo
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy; (C.B.); (L.P.); (A.D.M.); (C.B.)
| | - David Osca
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy; (D.O.); (F.C.)
| | - Christophe Brunet
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy; (C.B.); (L.P.); (A.D.M.); (C.B.)
| | - Fabio Crocetta
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy; (D.O.); (F.C.)
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Lemarcis T, Fedosov AE, Kantor YI, Abdelkrim J, Zaharias P, Puillandre N. Neogastropod (Mollusca, Gastropoda) phylogeny: A step forward with mitogenomes. ZOOL SCR 2022; 51:550-561. [PMID: 36245672 PMCID: PMC9544082 DOI: 10.1111/zsc.12552] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/24/2022] [Accepted: 06/13/2022] [Indexed: 11/28/2022]
Abstract
The Neogastropoda (Mollusca, Gastropoda) encompass more than 15,000 described species of marine predators, including several model organisms in toxinology, embryology and physiology. However, their phylogenetic relationships remain mostly unresolved and their classification unstable. We took advantage of the many mitogenomes published in GenBank to produce a new molecular phylogeny of the neogastropods. We completed the taxon sampling by using an in‐house bioinformatic pipeline to retrieve mitochondrial genes from 13 transcriptomes, corresponding to five families not represented in GenBank, for a final dataset of 113 taxa. Because mitogenomic data are prone to reconstruction artefacts, eight different evolutionary models were applied to reconstruct phylogenetic trees with IQTREE, RAxML and MrBayes. If the over‐parametrization of some models produced trees with aberrant internal long branches, the global topology of the trees remained stable over models and softwares, and several relationships were revealed or found supported here for the first time. However, even if our dataset encompasses 60% of the valid families of neogastropods, some key taxa are missing and should be added in the future before proposing a revision of the classification of the neogastropods. Our study also demonstrates that even complex models struggle to satisfactorily handle the evolutionary history of mitogenomes, still leading to long‐branch attractions in phylogenetic trees. Other approaches, such as reduced‐genome strategies, must be envisaged to fully resolve the neogastropod phylogeny.
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Affiliation(s)
- Thomas Lemarcis
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, EPHE Sorbonne Université, Université des Antilles Paris France
| | - Alexander E. Fedosov
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, EPHE Sorbonne Université, Université des Antilles Paris France
- A. N. Severtsov Institute of Ecology and Evolution Russian Academy of Sciences Moscow Russia
| | - Yuri I. Kantor
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, EPHE Sorbonne Université, Université des Antilles Paris France
- A. N. Severtsov Institute of Ecology and Evolution Russian Academy of Sciences Moscow Russia
| | - Jawad Abdelkrim
- UAR 2700 'Acquisition et Analyse de Données pour l'Histoire naturelle', Service d'Analyse de Données, CNRS Muséum National d'Histoire Naturelle, Sorbonne Universités Paris Cedex France
| | - Paul Zaharias
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, EPHE Sorbonne Université, Université des Antilles Paris France
| | - Nicolas Puillandre
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, EPHE Sorbonne Université, Université des Antilles Paris France
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11
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Strong EE, Sirenko BI, McLean JH. The only species of Mohnia Friele, 1879 (Caenogastropoda, Buccinoidea, Buccinidae) in the North Pacific represents an unrecognized new genus of Newtoniellidae (Triphoroidea). Zookeys 2021; 1055:69-87. [PMID: 34393573 PMCID: PMC8360822 DOI: 10.3897/zookeys.1055.68911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/13/2021] [Indexed: 11/16/2022] Open
Abstract
Mohniakurilana Dall, 1913 was described more than 100 years ago from deep waters off the Kuril Islands and remains exceedingly rare in museum collections. Originally placed in the carnivorous neogastropod family Buccinidae, fragmentary soft parts from the type lot and from several specimens belonging to allied species collected in the Aleutian Islands in the 1990s have allowed anatomical investigations for the first time. These have revealed the presence of a paucispiral operculum with an eccentric nucleus, foot with a deep propodial pedal gland and metapodial pedal gland, taenioglossate radula, short acrembolic proboscis, well-developed mid-esophageal gland, glandular prostate, and the absence of a penis; the nervous system is epiathroid with a long supra-esophageal connective and numerous statoconia in the statocysts. Analysis of the gut contents revealed abundant halichondriid sponge spicules. This evidence indicates a placement in the Triphoroidea, a diverse superfamily of specialized spongivores. Mohniakurilana is transferred to the Newtoniellidae and placed in the new genus Pseudomohniagen. nov.Pseudomohniarogerclarkisp. nov. is established for a new species from the Aleutian Islands characterized by its narrowly turreted shell and distinctive multicuspid rachidian. A lectotype is designated for Mohniakurilana.
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Affiliation(s)
- Ellen E Strong
- National Museum of Natural History, Smithsonian Institution, PO Box 37012, MRC 163, Washington, DC 20013-7012, USA Smithsonian Institution Washington United States of America
| | - Boris I Sirenko
- Zoological Institute, Russian Academy of Sciences, St. Petersburg, 199034, Russia Zoological Institute, Russian Academy of Sciences St. Petersburg Russia
| | - James H McLean
- Deceased; formerly of Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, CA 90007, USA Natural History Museum of Los Angeles County Los Angeles United States of America
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