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| Registros recuperados: 125 | |
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| Breure, A.S.H.. |
| The following new taxa are described: Plekocheilus (Eurytus) bruggeni, Thaumastus (Scholvienia) bambamarcaensis, T. (S.) gittenbergerorum, Bostryx aileenae, B. arcuatus, B. carinatus, B. c. trochiformis, B. circuliportus, B. c. rimacensis, B. coelhoi, B. cracentis, B. cunyacensis, B. frederici, B. fuligineus, B. hirsutus, B. huanucensis, B. h. poveli, B. inaquosum, B. kathiae, B. lentiformis, B. louisae, B. mordani, B. multilineatus, B. olmosensis, B. pauli, B. placitus, B. ploegerorum, B. spiculatus paucicostatus, B. s. pumilus, Bulimulus wiebesi, Sphaeroconcha, Naesiotus cleeforum, N. florschuetzi, N. subcostatus maranonensis, N. willinki, Scutalus (Vermiculatus), S. (V.) aureus, S. (V.) costifer naggsi, S. (V.) minutus, S. (V.) peakei, S. (V.)... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mollusca; Gastropoda; Bulimulidae; New taxa; New synonyms; Anatomical data; Locality data; New descriptions; 42.73. |
| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/323941 |
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| Wesselingh, F.P.; Cadée, G.C.; Renema, W.. |
| The actual and fossil distribution patterns of the aquatic gastropod genera Tryonia and Planorbarius indicate that avian dispersal was an important dispersal mechanism in the geological past. Combining the distribution histories of these genera with ecological data on modern relatives provides insights into the process of dispersal of aquatic taxa in general. Avian dispersal of aquatic taxa is facilitated by a variety of factors, including mass occurrence in resting/foraging places of migrating birds, ways to attach to the birds and to overcome desiccation during flight, as well as easy reproduction from a single specimen when introduced into a new habitat. The uncertain taxonomical status of aquatic organisms, as well as biased preservation and sampling,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Avian dispersal; Aquatic taxa; Biogeography; Distribution; Gastropoda; Mollusca; 42.73. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/235212 |
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| Schilthuizen, M.; Haase, M.; Koops, K.; Looijes, S.M.; Hendrikse, S.. |
| The Southeast-Asian tree snail subgenus Amphidromus s. str. (Gastropoda Pulmonata: Camaenidae) is unusual among all gastropods for its genetic antisymmetry: populations consist of stable mixtures of individuals with clockwise (dextral) and counterclockwise (sinistral) coiling directions. Although previous studies in A. inversus suggest that this genetic dimorphism is maintained by sexual selection, it cannot be ruled out that environmental factors also play a role. Adult shell shapes in A. inversus are known to show subtle differences between both coiling morphs, and it is known that in snails in general, shell shape is under environmental selection, thus creating the possibility that micro-niche use of both coiling morphs differs. In this paper, we first... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dispersal; Gastropoda; Left-right-asymmetry; Mollusca; Niche-differentiation; Southeast-Asia; 42.73. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/419173 |
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| Robba, E.. |
| The pyramidelloidean gastropods newly collected from one stratigraphic section and two spot localities in the Rembang anticlinorium (Middle Miocene, northeastern Java) are described and those of various ages in the collections of the Naturalis Biodiversity Center in Leiden are reviewed. A total of 111 species are covered in this paper; another 22 taxa dealt with by previous authors, of which the material was not available, are briefly commented on in an appendix. The “Rembangian” (Middle Miocene) assemblage consists of 89 species. Four are identified as formerly described species, namely Leucotina speciosa (Adams), Megastomia regina (Thiele), Exesilla dextra (Saurin) and Exesilla splendida (Martin); 52 are proposed as new; most of the others almost... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Pyramidelloidea; Taxonomy; 38.22; 42.73. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/442545 |
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| Breure, A.S.H.. |
| In this publication a revision is given of the genera of the subfamily Bulimulinae (Gastropoda, Pulmonata, Bulimulidae). The morphological variation of the shell, radula, pallial organs and genitalia is analized and 21 character transition series are recognized. In the systematical part the following data are presented for each genus : description of shell and anatomy, distribution, ecology, bibliography and a list of taxa. The number of (sub) genera is reduced from 80 to 43 ( + two nomina inquirenda). A new synonymy is : Paracochlea Hylton Scott, 1967 = Eudioptus Albers, 1860. The following new species names are introduced : Bostryx sophieae, Drymaeus (Drymaeus) marcapatensis, Drymaeus (Drymaeus) sophieae, Drymaeus (Mesembrinus) pseudobesus. Berendtia... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Pulmonata; Bulimulidae; Revision; Description; Distribution; Ecology; 42.73. |
| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/323943 |
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| Vermeij, Geerat J.. |
| Several gastropods, including members of the Busyconinae, wedge or chip bivalve prey by inserting the outer lip between the valves. This habit, which is associated with an abapically downwardly convex outer lip, often results in breakage and subsequent repair of the lip. I tested the hypothesis that convex-lipped clavilithines from the Eocene of France and the Neogene of Indonesia had higher frequencies of repair than their straight-lipped counterparts. Although this prediction was verified, frequencies of repair are low (0 to 0.19) compared to those of busyconines, indicating either that prey bivalves were small or that the predators are smaller than most busyconines. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Clavilithes; Bivalvia; Predation; Outer lip. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/588037 |
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| Bruggen, A.C. van; Winter, A.J. de. |
| Micractaeon kakamegaensis Verdcourt, 1993 (type loc. Kenya, Kakamega Forest), is a synonym of Pseudopeas koptawelilense Germain, 1934 (type loc. Kenya, Mt. Elgon); the proper name is therefore Micractaeon koptawelilensis (Germain, 1934). New anatomical data are supplied, more or less confirming classification in the family Ferussaciidae. The shell is subject to some considerable variation in size, shape and sculpture. The species appears to be widely distributed in various types of forest in tropical Africa (Ghana, Cameroon, eastern and south-eastern Zaïre, Kenya, Malawi, and eastern Zambia); hypsometrical distribution is generally from c. 950 m to c. 2300 m, although in Ghana it has been collected at altitudes of between < 250 and c. 700 m. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Pulmonata; Ferussaciidae; Micractaeon; Africa; Ghana; Cameroon; Zaïre; Kenya; Zambia; Mala?i; Taxonomy; Distribution; 42.73. |
| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/319133 |
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| Damen, Peter; Dictus, Wim J.A.G.. |
| The development of the muscular system of the gastropod mollusc Patella has been thoroughly studied. As a result, two larval retractors, the main and accessory larval retractor, had been described in the larva of Patella. These muscles were supposed to be responsible for the retraction of the larval body into the shell. Previously no larval extensors, which would be responsible for the extension of the larval body out of the shell, have been described. Using cell-lineage tracer injection and phalloidin staining of muscles, a newly-discovered muscle is herein identified in the larva of Patella coerulea. A functional model is presented in which two muscles are responsible for the extension of the larva, the newly-discovered muscle together with the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Patella; Gastropoda; Mollusca; Development; Larva; Muscle; Antagonist; Cell-lineage. |
| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/534309 |
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| Coomans, H.E.; Moolenbeek, R.G.. |
| Several Conus species of the coast of Oman are revised. Conus stocki n. sp. is described from Masïrah Island. For C. ardisiaceus Kiener, 1845, a neotype is designated. A lectotype is selected for C. luctificus Reeve, 1848. C. lischkeanus tropicensis Coomans & Filmer, 1985, has a disjunct range in the Indian Ocean. The recorded distribution of C. parvatus sharmiensis Wils, 1986, is enlarged from the Red Sea to the coast of Oman. c. quasimagnificus Da Motta, 1982, is provisionally considered a subspecies of C. pennaceus Born, 1778. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Gastropoda; Taxonomy; Conus; Oman. |
| Ano: 1990 |
URL: http://www.repository.naturalis.nl/record/504452 |
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| Este artículo presenta los resultados de la investigación realizada por Cristian Aldea y Jesús S.Troncoso y que representa un avance en el conocimiento de los ecosistemas bentónicos del mar de Bellingshausen y la isla Pedro I, aportando de paso nuevos antecedentes para la península Antártica y las islas Shetland del Sur y contribuyendo al conocimiento de la taxonomía de moluscos en el océano antártico. |
| Tipo: Journal Contribution |
Palavras-chave: Molluscs (marine); Antarctic zone; Gastropoda. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4500 |
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| Cavallari,Daniel Caracanhas; Simone,Luiz Ricardo Lopes de. |
| Abstract Arene lychee sp. nov. is described from Canopus Bank, a seamount located ~190 km off Fortaleza, Ceará, NE Brazil (02°14’25”S, 38°22’50”W), based on shell morphology. The species is characterized by a large, trochiform shell; color ranging from intense reddish to white (darker on spiral cords, lighter at base) with a yellow apex; sculpture of 3-8 wide spiral cords with large scale-like spines; cords separated by deep interspaces with similar width, and interspaces sculptured by closely-packed, thin axial growth lines. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Angarioidea; Biodiversity; Gastropoda. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100222 |
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| Pizá,Julia; Cazzaniga,Néstor J.; Ghezzi,Natalia S.. |
| ABSTRACT Although the presence of apertural folds and lamellae is the most recognizable character of the Odontostomidae, some species lack them, mostly in Anctus Martens, 1860, Bahiensis Jousseaume, 1877 and Moricandia Pilsbry & Vanatta, 1898. Eudioptus avellanedae Doering, 1881 - a slender odontostomid species that lacks even the slightest trace of folds or lamellae in its shell aperture - was however transferred to Odontostomus by Pilsbry in 1902 on the basis of its building forward of the aperture-margins. It is currently placed in its own monotypic subgenus, Cyclodontina (Ventania) Parodiz, 1940, on the basis of about the same argument. In this paper we redescribe its shell morphology and, for the first time, describe the internal anatomy of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Conservation; Endemisms; Gastropoda; Orthalicoidea. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100334 |
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| Registros recuperados: 125 | |
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