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| Registros recuperados: 346 | |
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| Bocxlaer, B. Van; Strong, E.E.. |
| The anatomy, functional morphology and evolutionary ecology of the Viviparidae, and the subfamily Bellamyinae in particular, are incompletely known. Partly as a result, genealogical relationships within the family remain poorly understood. Because of this lack in knowledge, few informed hypotheses exist on ancestral states, how differences in body plans between the subfamilies evolved, and how the peculiar biogeographic distribution patterns of viviparids have arisen. Here we document the anatomy, morphology, life history and systematics of Cipangopaludina japonica, a Japanese species that has been introduced into North America, to resolve taxonomic confusion and to improve our understanding of how form and function are related in bellamyines. Anatomical... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Basal Architaenioglossa; Bellamya; Fecundity; Geometric morphometrics; Histology; Reproductive anatomy; Sexual dimorphism; 42.73. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/609995 |
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| Roch, F.. |
| Der indomalayische Archipel ist für die Familie der Holzbohrmuscheln Teredinidae bezüglich seines Artenreichtums eines der wichtigsten Gebiete, sind doch in diesem grossen Meeresabschnitt Vertreter aller drei Gattungen (Teredo, Nausitora, Bankia) und beinahe sämtlicher Untergattungen beheimatet. Ebenso verdient die Teredinidenfauna von Niederländisch-Guayana und Curaçao trotz der verhältnismässig geringen Ausdehnung der Küstenstreifen dieser holländischen Kolonialgebiete unser besonderes Interesse; denn die dort gefundenen Arten liefern eine willkommene Ergänzung unserer bisherigen Kenntnisse, die fast ausschliesslich auf den eingehenden Untersuchungen amerikanischer Autoren beruhen. Vorliegende Bearbeitung der Terediniden-Sammlungen des Zoologischen... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.73. |
| Ano: 1955 |
URL: http://www.repository.naturalis.nl/record/318298 |
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| Speijer, E.A.M.. |
| Wanneer wij de litteratuur over de in Nederland voorkomende Mollusca nagaan, vinden wij als laatste samenvattende publicaties de beide lijsten van het Mollusken-Comité. In de nieuwste (1927) valt ons onder meer het volgende op: „Niet altijd is de nomenclatuur geheel volgens de laatste eischen der prioriteit". Dit is inderdaad waar, en ik zal trachten met het onderstaande hierin zooveel mogelijk te voorzien. Bij de meeste hieronder genoemde soorten volgen vindplaatsen. Ik heb alleen die vindplaatsen vermeld, die in bovengenoemde lijst niet voorkomen, daar dit stukje uitsluitend als aanvulling is bedoeld. Hoewel ik ervan overtuigd ben nog lang niet volledig te zijn, neem ik aan, dat deze lijst een juisteren indruk zal geven van de verspreiding van onze... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.73. |
| Ano: 1928 |
URL: http://www.repository.naturalis.nl/record/317945 |
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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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| Kaas, P.. |
| The late Eugène Leloup examined samples from five stations of the Benthédi-Expédition, 1977, in the North of the Mozambique Channel, containing four species of chitons, two of which proved to be new to science. The material here discussed, coming from eighteen Benthédistations, proved to contain fourteen species, among which the four previously reported by Leloup (1981), and two hitherto unknown, here described as Leptochiton (Leptochiton) gloriosus spec, nov. and Ischnochiton (Ischnochiton) crassus spec. nov. The Réunion material came from nine stations and contains five species of chitons, two of which are new, viz. Leptochiton (Leptochiton) kurnilatus spec. nov. and Ischnochiton (Stenosemus) vitreolus spec. nov. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Polyplacophora; New species; New records; Indian Ocean; 42.73. |
| Ano: 1985 |
URL: http://www.repository.naturalis.nl/record/318843 |
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| Henrard, J.B.. |
| Pseudobba boschmai nov. spec. Description. — The shell is large, very globose, umbilicate, and more or less irregularly obliquely ribbed; it is peculiarly striate-pitted between the ribs. The apex is obtuse. The whorls number 6 1/2, the upper are slightly convex, the following soon become more convex, while the ultimate whorl is very large, convex, and descending in front; the sutures are impressed. The upper whorls are dark fawn-coloured, gradually becoming darker; the body whorl is of a beautiful chestnut colour, becoming blackish towards the aperture, this colour is visible as a vertical band of about 1 cm broad; it does not obtect the reflexed peristome which is white and has a white lip. The aperture is dark and smooth. The peristome is nearly... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.73. |
| Ano: 1964 |
URL: http://www.repository.naturalis.nl/record/317980 |
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| Reich, S.. |
| Today’s global marine diversity hotspot, or center of maximum biodiversity, is located in the Indo-West Pacific (IWP), namely in the Indo-Malayan region, including Malaysia, the Philippines, Indonesia, and Papua New Guinea (Hoeksma, 2007; Renema et al., 2010). Numerous groups of marine organisms, for instance foraminifera, mollusks, and corals contribute to the high taxonomic richness (e.g., Bellwood et al., 2005; Hoeksema, 2007; Kohn, 1990; Wilson and Rosen, 1998). The exceptional biodiversity in the region is thought to have originated in the Early Neogene with the diversification of scleractinian coral reefs and associated organisms (e.g., Wilson and Rosen, 1998; Chapter 6). Because the available fossil data to document patterns of diversification of... |
| Tipo: Book (monograph) |
Palavras-chave: Miocene; Marine Mollusca; Indonesia; 42.73. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/482553 |
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| Criscione, F.; Köhler, F.. |
| Kimberleytrachia Köhler, 2011 is a genus of camaenid land snail endemic to the Western Australian Kimberley region. It comprises twelve previously recognised species, all of which occur within the high precipitation zone along the north-western coast between the Admiralty Gulf and King Sound and within less than about 50 km distance from the coast. By evaluating the variation in shell and genital anatomy as well as the differentiation in the mitochondrial markers 16S and COI, we assess the monophyly of Kimberleytrachia with respect to other camaenid genera from north-western Australia. In addition, we newly describe six species (K. jacksonensis n. sp., K. leopardus n. sp., K. nelsonensis n. sp., K. serrata n. sp., K. setosa n. sp. and K. silvaepluvialis n.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Genetic distances; Helicoidea; Mitochondrial DNA; New species; Stylommatophora; 42.73; 42.64. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/506810 |
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| Groenenberg, D.S.J.; Wesselingh, F.P.; Rajagopal, S.; Jansen, J.M.; Bos, M.M.; Velde, G. van der; Gittenberger, E.; Hoeksema, B.W.; Raad, H.; Hummel, H.. |
| Late Quaternary (Eemian) deposits of the Netherlands contain shells that resemble those of living Mytilus galloprovincialis. Similar broad-shelled mytilids also occur in estuaries of the southwestern Netherlands together with slender individuals typical of M. edulis. We sampled living mussels along a depth gradient in the Oosterschelde to a) investigate whether a relation exists between shell shape and depth, b) test if the broadshelled specimens might represent M. galloprovincialis (or a hybrid with M. edulis) and c) assess by inference if the Quaternary specimens might be attributed to M. galloprovincialis as well. In order to do so, we compared genetic (length polymorphism of Me 15/16, COIII sequences and AFLPs) and shellmorphological characteristics... |
| Tipo: Article / Letter to the editor |
Palavras-chave: AFLP; COIII; Me 15/16; Mytilus; Shell morphology; The Netherlands; 42.73. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/376595 |
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| Kakabadze, M.V.; Hoedemaeker, P.J.; Bogdanova, T.N.; Sharikadze, M.Z.. |
| On the basis of new and published palaeontological and stratigraphical data, the qualitative and quantitative variations in the Barremian-early Albian ammonite fauna of Colombia have been documented and analyzed. The position adopted here is that in the early Barremian the Andean Province became replaced by the Caribbean Subprovince in Colombia. The Caribbean Subprovince became separated as an independent unit from the Andean Province on the generic level (Buergliceras, Pedioceras), but especially on the species level. In the middle/upper Aptian many new endemic genera and subgenera appeared; Juandurhamiceras, Neodeshayesites, Laqueoceras, Zambranoites, Riedelites and Pseudoptychoceras. Besides, many endemic middle Aptian species of other, non-endemic... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Palaeobiogeography; Early Cretaceous; Ammonites; Colombia; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214461 |
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| Bruggen, A.C. van. |
| The genus Negulus is reviewed; only four Recent species, restricted to continental Africa, are recognized. The genus is extinct in Europe, being only recorded from Tertiary deposits. A key to the shells of the Recent species (all figured) is supplied. The anatomy is as yet unknown. A sinistral shell of N. abyssinicus is described from among a series of paralectotypes in the Leiden Museum, the first such abnormality in the genus (figured). A fair amount of shell material has become available (among which some historical specimens) so that metric data may be compared with greater confidence. Recent occurrence is established/confirmed for Eritrea, Ethiopia, Sudan, Kenya, Tanzania, Zaire, Zambia, Malaŵi, and Bioko (Fernando Poo). The small size of the shell... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Pulmonata; Vertiginidae; Negulus; Africa; St. Helena Is.; Taxonomy; 42.73. |
| Ano: 1994 |
URL: http://www.repository.naturalis.nl/record/318176 |
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| Bruyne, R. de; Wallbrink, H.; Gmelig Meyling, A.. |
| Ongewervelde fauna van het Rijntakkengebied, met veldstudie in uiterwaarden rond Zaltbommel In 2001 en 2002 is in opdracht van Rijkswaterstaat, Directie Oost, door EIS-Nederland en stichting Anemoon een inventarisatie uitgevoerd naar het voorkomen van terrestrische mollusken (landslakken) in een vijftal uiterwaarden van de Waal nabij Zaltbommel. Het betreft locaties aan de oostkant (noord- en zuid-oever) en de westkant (zuid-oever) in de Breemwaard, Gamerensche waard, Heesseltsche waard, Hurwenensche waard en Rijswaard. Doel van het onderzoek was om meer inzicht te krijgen in de indicatorwaarde van ongewervelden in de uiterwaarden. Naast het onderzoek naar mollusken, zijn in dezelfde periode inventarisaties uitgevoerd gericht op loopkevers, sprinkhanen,... |
| Tipo: Book (monograph) |
Palavras-chave: Nederland; Verspreiding; Biotopen; Ecologie; 42.73. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/219868 |
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| Owada, M.; Hoeksema, B.W.. |
| Research on the evolution of the symbiosis between the boring mussel Fungiacava eilatensis (Bivalvia: Mytilidae) and its mushroom coral hosts (Scleractinia: Fungiidae), which requires phylogenetic reconstructions of both the Mytilidae and the Fungiidae, contributes to the understanding of the complexity of coral reef ecosystems. Previously, Fungiacava was regarded as a genus that had descended from Leiosolenus or as belonging to the subfamily Crenellinae, but no phylogenetic support has been obtained for this hypothesis. In the present study, the 18s rRNA sequences of ten mytilid species and the shell microstructures of 12 mytilids were investigated. The phylogenetic position of F. eilatensis is discussed in relation to its associations with its host... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 18s rRNA; Fungiacava; Leiosolenus; Mushroom corals; Rock-boring bivalves; Shell microstructure; 42.72; 42.73. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/382571 |
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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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| Registros recuperados: 346 | |
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