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| Registros recuperados: 161 | |
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| Poorten, J.J. ter. |
| 31 Cardiidae species have been collected in Ambon, Indonesia by the Rumphius Biohistorical Expedition, comprising circa 40% of the known species of this family from the Indonesian archipelago. Seven of these could be traced to the figures given by Rumphius (1705) and an additional two, taking into account some reservations about the identity of Rumphius' depicted shells. This implies that all but one of Rumphius' species, viz. Tridacna (Tridacna) gigas (Linnaeus, 1758), have been reencountered by the present expedition. The expedition has yielded the first Indonesian published records of two species: Fulvia (Laevifulvia) lineonotata Vidal, 1994 and Acrosterigma dianthinum (Melvill & Standen, 1899). For the latter this implies a considerable range... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Bivalvia; Cardiidae; Indonesia; Moluccas; Ambon; Rumphius; 42.73. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/226661 |
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| Kaas, P.; Knudsen, J.. |
| The present paper deals with an important Danish paper on the Polyplacophora, published in 1797 by Lorentz Spengler: Udförlig Beskrivelse over det mangeskallede Konkylie-Slaegt, af Linnaeus kaldet Chiton; med endeel nye Arter og Varieteter. -Skrivter af Naturhistorie-Selskabet, 4e Bind, Ie Hefte, VI: 62-103, Tab. VI (Kiöbenhavn). In order to make this historical paper accessible to students of the group, a translation (by Dr J. Knudsen, with the assistance of the late Mrs A. Volsoe) of the original 18th century Danish text into modern English is here presented. A considerable part of the material in the "Museo Spengleriano", on which Spengler based his descriptions, is still extant, being held now in the Zoological Museum, University of Copenhagen. The... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Polyplacophora; Taxonomy; 42.73. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/318917 |
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| Gittenberger, E.. |
| A new troglobitic genus and species, viz. Speleodentorcula beroni gen. & spec. nov., is described from the island of Euboea, Greece. The species, known from a single cave only, is quite isolated systematically. According to the structure of its shell and the genitalia S. beroni should be classified with the Orculidae. Within this family Speleodentorcula is most similar to Walklea anatomically; conchologically there is some vague resemblance to Fauxulus (apertural denticles) and Odontocyclas, Walklea, Fauxulus and Afriboysidia (surface sculpture). Speleodentorcula alone is considered the sister group of the taxon encompassing these last mentioned four genera. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Orculidae; Speleodentorcula; Gen. nov.; Spec. nov.; Troglobiont; Greece; 42.73. |
| Ano: 1985 |
URL: http://www.repository.naturalis.nl/record/318084 |
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| Wesselingh, F.P.; Ranzi, A.; Räsänen, M.E.. |
| Thirteen species of fossil molluscs are reported from the Solimões Formation of western Brazilian Amazonia. Based on mammalian chronology of the Solimões Formation and radiometric ages reported from coeval deposits in adjacent Peru, the age of the fauna is established as Late Miocene. The fauna includes five prosobranch gastropod species, seven pearly freshwater mussel species and one sphaeriid bivalve species. The supposed presence of Pachydon (Corbulidae: Bivalvia) in these deposits is rejected; Pachydon acreanum, whose status has long been uncertain, is transferred to the unionoid genus Callonaia. The Solimões mollusc fauna is entirely composed of obligate freshwater taxa, resembling species-poor modern Amazonian fluvial faunas. The presence of the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Western Amazonia; Miocene; Solimões Formation.; 38.22; 42.73. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/209736 |
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| Robinson, D.G.; Hovestadt, A.; Fields, A.; Breure, A.S.H.. |
| An overview of the land-snail fauna of the Lesser Antillean island of Dominica is given, based on data from literature and four recent surveys. There are 42 taxa listed, of which the following species are recorded for the first time from the island: Allopeas gracile (Hutt on, 1834), A. micra (d’Orbigny, 1835), Beckianum beckianum (L. Pfeiffer, 1846), Bulimulus diaphanus fraterculus (Potiez & Michaud, 1835), Deroceras laeve (Müller, 1774), Sarasinula marginata (Semper, 1885), Streptostele musaecola (Morelet, 1860) and Veronicella sloanii (Cuvier, 1817). The enigmatic Bulimulus stenogyroides Guppy, 1868 is now placed in the genus Naesiotus Albers, 1850. Helicina epistilia Guppy, 1868 is now considered a synonym of H. platychila (Megerle von Mühlfeld,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Gastropoda; Taxonomy; Distribution; Dominica; 42.73. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/311940 |
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| Gerlach, J.; Bruggen, A.C. van. |
| The taxonomy of the species of the terrestrial carnivorous snail family Streptaxidae of the Seychelles archipelago is reviewed with the exception of the three species of the genus Priodiscus (vide Gerlach, 1995). All 18 species are restricted to the northern, granitic islands. This paper describes 15 species, including two new genera (Silhouettia and Careoradula), and four new subspecies (Edentulina dussumieri reservae, E. d. silhouettae, E. d. praslina, Stereostele nevilli parvidentata). The nominal taxon Streptaxis (Imperturbatia) constans var. silhouettae is raised to species level to become the type species of the new genus Silhouettia. The type species of Careoradula is Streptaxis (Imperturbatia) perelegans. Anatomical descriptions and figures are... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Gastropoda; Pulmonata; Streptaxidae; Seychelles Islands; Taxonomy; Biogeography; 42.73. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219431 |
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I made use of the known dates of reclamation (and of afforestations) in the IJsselmeerpolders in The Netherlands to assess evolutionary adaptation in Cepaea nemoralis. At 12 localities (three in each polder), I sampled a total of 4390 adult individuals in paired open and shaded habitats, on average 233m apart, and scored these for genetic shell colour polymorphisms. The results show (highly) significant differentiation at most localities, although the genes involved differed per locality. Overall, though, populations in shaded habitats had evolved towards darker shells than those in adjacent open habitats, whereas a 'Cain & Sheppard' diagram (proportion yellow shells plotted against ‘effectively unbanded’ shells) failed to reveal a clear pattern. This might suggest that thermal selection is more important than visual selection in generating this pattern. Trait differentiation, regardless of whether they were plotted against polder age or habitat age, showed a linear increase of differentiation with time, corresponding to a mean rate of trait evolution of 15–31 kilodarwin. In conclusion, C. nemoralis is capable of rapid and considerable evolutionary differentiation over 1–25 snail generations, though equilibrium may be reached only at longer time scales
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Naturalis | |
| Schilthuizen, M.. |
| I made use of the known dates of reclamation (and of afforestations) in the IJsselmeerpolders in The Netherlands to assess evolutionary adaptation in Cepaea nemoralis. At 12 localities (three in each polder), I sampled a total of 4390 adult individuals in paired open and shaded habitats, on average 233m apart, and scored these for genetic shell colour polymorphisms. The results show (highly) significant differentiation at most localities, although the genes involved differed per locality. Overall, though, populations in shaded habitats had evolved towards darker shells than those in adjacent open habitats, whereas a 'Cain & Sheppard' diagram (proportion yellow shells plotted against ‘effectively unbanded’ shells) failed to reveal a clear pattern. This... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Predation; Crypsis; Contemporary evolution; Gastropoda; Mollusca; Adaptation; 42.73. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/445782 |
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| Vervoenen, M.; Wesselingh, F.P.; Nieulande, F.A.D. van. |
| Mytilus antiquorum J. Sowerby, 1821, is recorded from the Coralline Crag Formation of East Anglia (UK) and the Lillo Formation (Oorderen, Kruisschans and Merksem members) of the Antwerp area (Belgium). The species is diagnosed on the basis of newly collected material and differentiated from modern European mussel species. The presence of M. antiquorum in the southern North Sea Basin is restricted to the Middle (Piacenzian) and early Late Pliocene (Gelasian). A possible occurrence of the species in the latest Pliocene of northern Greenland is discussed. A second Middle- Late Pliocene North Sea Basin species, tentatively referred to as M. edulis forma giganteus Wood, 1874, is diagnosed and discussed. The systematic status of this species remains unsolved. In... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Pliocene; North Sea basin; Mollusca; Bivalvia; Mytilidae; 42.73; 38.22. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/235200 |
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| Vermeij, G.J.; Raven, H.. |
| In this paper the Miocene to recent melongenid species of northwest Borneo are discussed. The recent fauna is poor with three genera represented by one species each. In the Miocene three (possibly four) genera occur with eight (possibly nine) species of which three are described as new species: Melongena murifactor, uniquely characterized by the formation of a septum walling off the adapical sector of the aperture; Pugilina erecta, characterized (along with its close Miocene relative from Java, P. ickei) by a free-edged, erect inner lip; Volema goliath, large for the genus with later whorls progressively covering the upper row of spines of earlier whorls. The apertural septum of M. murifactor is unique within Gastropoda, whereas the erect inner lip of P.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Melongenidae; Mollusca; Molluscs; 38.22; 42.73. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/320196 |
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| Dijkstra, H.H.. |
| During the Indonesian-Dutch SNELLIUS -II Expedition (1984-1985) to the Indonesian Archipelago 46 pectinacean species were collected from the Flores Sea and Banda Sea (5°52'-9°57'S, 118°12'-123°58'E) at littoral to bathyal depth (835 m). One new pectinid genus, viz. Glorichlamys gen. nov., six new propeamussiids, viz. Parvamussium araneum spec. nov., Parvamussium carbaseum spec. nov., Parvamussium cassium spec. nov., Parvamussium undosum spec. nov., Parvamussium virgatum spec. nov., Cyclopecten cancellus spec. nov., and one new entoliid, viz. Pectinella aequoris spec. nov. are described. Twelve new records of Pectinacea for this region are mentioned. For Ostrea squamosa Gmelin, 1791 a lectotype is designated. In addition Pectinidae of the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Bivalvia; Propeamussiidae; Entoliidae; Pectinidae; Taxonomy; Indonesia.; 42.73. |
| Ano: 1991 |
URL: http://www.repository.naturalis.nl/record/317854 |
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| Registros recuperados: 161 | |
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