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Registros recuperados: 121
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A Late Cretaceous gastropod homing scar (possibly ichnogenus Lacrimichnus) from southern Limburg, The Netherlands Naturalis
Jagt, J.W.M..
An isolated gastropod homing scar, etched into an arcoscalpelline (cirripede) scutum, is recorded from the upper Nekum Member (Maastricht Formation, upper Maastrichtian) at the ENCI-HeidelbergCement Group quarry. This trace may be assignable to the ichnogenus Lacrimichnus Santos, Mayoral & Muñiz, that comprises etching scars produced by Neogene calyptraeid and/or capulid gastropods and ostreid bivalves from southern Spain and Portugal. However, it differs from both ichnospecies currently contained in that ichnogenus, L. bonarensis and L. cacelensis, in showing a relatively deep depression around the rim, irregularly distributed pit- and slit-like depressions, and an irregularly subcircular outline. Despite the wealth of available hard substrates...
Tipo: Article / Letter to the editor Palavras-chave: Trace fossil; Homing scar; Gastropoda; Lacrimichnus; Cirripedia; Upper Cretaceous; Maastrichtian; The Netherlands; 38.22; 42.73.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/217413
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A Miocene molluscan faunule from Caucagua (Miranda State, Venezuela), with the description of a new species of Tryonia (Mollusca, Gastropoda) Naturalis
Wesselingh, F.P.; Macsotay, O..
A molluscan faunule from the Miocene Cumaca Formation of the western margin of the Tuy Basin (Venezuela) is described. The fauna yields two species of freshwater snails and a single terrestrial snail species. Tryonia vivasi nov. spec. is described from the fauna, and its biogeographical significance is discussed.
Tipo: Article / Letter to the editor Palavras-chave: Miocene; Venezuela; Gastropoda; Tryonia; New species; Cumaca Formation; 42.73; 38.22.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/235213
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A model of fluff layer erosion and subsequent bed erosion in the presence of the bioturbator, Hydrobia ulvae ArchiMer
Orvain, Francis; Le Hir, Pierre; Sauriau, Pierre-guy.
Previous studies have shown that the gastropod Hydrobia ulvae destabilizes the top layers of fine-grained sediments. This process is mediated by the formation of a "biogenic" fluff layer that includes tracks, faecal pellets and mucus. This fluff layer has been shown to be easily resuspended before general bed erosion. In order to examine how fluff layer and bed. erosion interact, flume experiments were performed with fluid sediments of varying water contents. Ten thousand snails were placed and allowed to crawl for 5 h on the sediment surface, and then the resuspended sediment mass was measured in response to step-wise shear stress increases. Two distinct erosion phases were observed: (1) initial resuspension of the fluff layer and (2) the subsequent bed...
Tipo: Text Palavras-chave: Gastropoda; Erosion sediment; Bioturbation; Cohesive sediment; Marine sediment.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/publication-805.pdf
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A Napaeopsis species (Gastropoda: Pulmonata: Enidae) from the Peloponnese, Greece Naturalis
Gittenberger, E..
Three Napaeopsis species were known from Greece. A fourth one is described now as N. mennoi spec. nov. It is the first record of the genus for the Peloponnese.
Tipo: Article / Letter to the editor Palavras-chave: Gastropoda; Pulmonata; Enidae; Napaeopsis; New species; Greece.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/273877
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A new species of Acteon (Opisthobranchia: Acteonidae) from Northeast Brazil Rev. Bras. Zool.
Cunha,Carlo Magenta.
A new species of Acteon Montfort 1810, Acteon mirim sp. nov., from Canopus Bank, state of Ceará, Brazil is described based on shell morphology. The new species is compared with other species of the genus reported from Brazil. It differs from other Brazilian species in having a whitish color with dark orange-brown spiral bands and a shell surface covered with small spiral grooves, regularly rectangular.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gastropoda; Cephalaspidea; Deep water; Conchology; Taxonomy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000200012
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A new species of Arene (Vetigastropoda, Areneidae) from Canopus Bank, off NE Brazil Pap. Avulsos de Zool. (São Paulo)
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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A new species of Gulella (Pulmonata: Streptaxidae) from montane forest in the Ndoto Mountains, Kenya Naturalis
Rowson, B.; Seddon, M.B.; Tattersfield, P..
Gulella mkuu spec. nov. is described from montane forest in the isolated Ndoto Mountains of northern Kenya. Although exceptionally large for the genus, shell, genitalia and radula features suggest it is more closely related to the "G. sellae-ugandensis" complex than to other very large East African species in the subgenus Primigulella Pilsbry. G. mkuu spec. nov. is apparently endemic to the Ndotos.
Tipo: Article / Letter to the editor Palavras-chave: Gastropoda; Streptaxidae; New species; Kenya; Ndoto / Ndotos; 42.73.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/311942
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A new species of the genus Notharinia Vermeulen, Phung & Truong, 2007 from Peninsular Malaysia (Mollusca, Caenogastropoda, Pupinidae) Naturalis
Maassen, W.J.M..
A new species of the terrestrial caenogastropodan family Diplommatinidae is described from Peninsular Malaysia, viz. Notharinia linnei.
Tipo: Article / Letter to the editor Palavras-chave: Mollusca; Gastropoda; Caenogastropoda; Pupinidae; Notharinia; Taxonomy; South-east Asia; Peninsular Malaysia; 42.73.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/261772
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A new species of the operculate land snail genus Maizaniella from Liberia (Gastropoda, Caenogastropoda) Naturalis
Winter, A.J. de.
Maizaniella sapoensis spec. nov. from Liberia is described. The species is provisionally att ributed to the subgenus Spirulozania. It is by far the smallest known member of the genus, with an adult shell diameter of just over 2 mm.
Tipo: Article / Letter to the editor Palavras-chave: Mollusca; Gastropoda; Maizaniidae; Maizaniella; Spirulozania; West Africa; Liberia; Sapo National Park; 42.73.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/311945
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A revision of the polytypic Albinaria hippolyti (Boettger, 1878) from Crete (Gastropoda Pulmonata: Clausiliidae) Naturalis
Schilthuizen, M.; Welter-Schultes, F.W.; Wiese, V..
On the basis of both detailed distributional field studies and morphological analyses, a revision of the polytypic species Albinaria hippolyti from Central and Eastern Crete is presented. True subspecies are distinguished from mere geographic varieties by the presence of narrow hybrid zones. Using this criterion, four adjoining subspecies are recognised: A. h. hippolyti (Boettger, 1878), A. h. aphrodite (Boettger, 1883), A. h. holtzi (Sturany, 1904) and A. h. harmonia subspec. nov. Additionally, two geographically isolated and conchologically distinctive forms are also treated as subspecies: A. h. arthuriana (Boettger, 1878) and A. h. asterousea subspec. nov. The geographical distribution and variability of each subspecies is described in detail. A. h....
Tipo: Article / Letter to the editor Palavras-chave: Gastropoda; Pulmonata; Clausiliidae; Albinaria hippolyti; Taxonomy; Hybrid zones; Variability; Zoogeography; 42.73.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/318774
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Addisonia enodis (Vetigastropoda: Lepetelloidea) associated with an elasmobranch egg capsule from the South Atlantic Ocean and the discovery of the species from deep waters off northeastern Brazil Biota Neotropica
Lima,Silvio Felipe Barbosa; Simone,Luiz Ricardo Lopes; Guimarães,Carmen Regina Parisotto.
Abstract A gastropod specimen of the subfamily Addisoniinae Dall, 1882 is reported here for the first time associated with an elasmobranch egg capsule from the South Atlantic Ocean. A specimen of Addisonia enodis Simone, 1996 was found living inside an egg capsule of Atlantoraja castelnaui (Miranda Ribeiro, 1907) (Arhynchobatidae Fowler, 1934) from shallow waters off southeastern Brazil. Previous studies have reported the association of members of the genus Addisonia Dall, 1882 only with the egg capsules of sharks from the family Scyliorhinidae Gill, 1862 and skates from the family Rajidae de Blainville, 1816. Other specimens of A. enodis are also here reported to occur off northeastern Brazil based on shells found in deep waters off the state of Sergipe,...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Gastropoda; Addisoniidae; Addisonia excentrica; South America; Deep sea.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000300501
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Anatomical evidence for the occurrence of Lymnaea (Galba) palustris (O.F. Müller, 1774) and L. (Galba) corvus (Gmelin, 1778) (Gastropoda: Lymnaeidae) in the Netherlands Naturalis
Velde, G. van der; Kessel, C.M. van.
A study was made on the Lymnaea (Galba) palustris complex in The Netherlands. Investigations on the genitalia proved that in The Netherlands two species are present, viz. L. palustris (O. F. Müller, 1774) and L. corvus (Gmelin, 1778), which can not in all cases be distinguished by shell characters. Genitalia were prepared, drawn and several measurements were carried out to investigate the variation within the two species. It appeared that most characters show a partial or total overlap. Some characters appeared to separate the two species absolutely. One of these is very useful for a quick distinction of both species, viz. the situation of the truncus receptaculi with respect to the oviductus, which character is already visible after a general dissection...
Tipo: Article / Letter to the editor Palavras-chave: Mollusca; Gastropoda; Lymnaeidae; Lymnaea (Galba) palustris; L. (Galba) corvus; Anatomy; The Netherlands; 42.73.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/318120
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Aspectos ecológicos e levantamento malacológico para identificação de áreas de risco para transmissão da esquistossomose mansoni no litoral norte de Pernambuco, Brasil Iheringia, Sér. Zool.
Souza,Marco A. A.; Barbosa,Verônica S.; Albuquerque,Jones O.; Bocanegra,Silvana; Souza-Santos,Reinaldo; Paredes,Helen; Barbosa,Constança S..
Realizou-se levantamento malacológico na praia de Carne de Vaca, município de Goiana, litoral norte de Pernambuco, entre novembro de 2006 e outubro de 2007, com o objetivo de conhecer a fauna malacológica dessa localidade e verificar as condições naturais, pouco ou bastante alteradas das áreas de estudo através da aplicação de um protocolo de avaliação de diversidade de hábitats. Foram coletados 5.912 moluscos, representados por sete espécies e quatro famílias, dos quais, 5.209 exemplares de Biomphalaria glabrata (Say, 1818), 113 de Drepanotrema lucidum (Pfeiffer, 1839), 55 de Drepanotrema cimex (Moricand, 1837), 13 de Drepanotrema anatinum (Pfeiffer, 1839), 222 de Melanoides tuberculatus (Muller, 1774), 263 de Pomacea sp. e 37 de Physa marmorata Guilding,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gastropoda; Schistosoma mansoni; Praia de Carne de Vaca; Ambiente de água doce.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000100003
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Aspectos ultraestruturais do espermatozóide de Natica marochiensish (Gmelin) (MOllusca, Gastropoda) do litoral norte do Brasil Zoologia
Matos,Edilson; Matos,Patricia; Casal,Graça; Azevedo,Carlos.
Spermatozoa of Natica marochienssish (Gmelin, 1791) is described by light and electron microscopy. The spermatozoon is of the primitive type with head contains a conical acrosomal complex with an acrosomal vesicle of dense matrix having a basis occupied by the subacrosomal space. The middle piece shows the centriolar complex surrounded by mitochondria and the tail contains the axoneme with a 9+2.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mollusca; Gastropoda; Natica marochiensish; Ultrastructure; Spermatozoa.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000300009
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Bibliography of Cuban terrestrial Mollusca, including related and biohistorical papers on Cuban malacology Naturalis
Breure, A.S.H.; González Guillén, A..
This paper presents a comprehensive overview of literature on Cuban terrestrial molluscs since the 18th century. It currently cites approximately 1000 references, dealing with a) primary and secondary sources directly treating Cuban taxa or relevant for the study of the Cuban malacofauna; b) abstracts of congresses, unpublished theses, and internal reports ('grey literature'); and c) biohistorical papers dealing with the life and work of Cuban malacologists. To provide some context, we also give brief overviews of Cuban and non-Cuban authors and journals issued on the island relevant for Cuban malacology.
Tipo: Article / Letter to the editor Palavras-chave: Bibliography; Biohistory; Cuba; Gastropoda; Mollusca; Malacology; 42.73.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/339298
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Biogeographic and species richness patterns of Gastropoda on the southwestern Atlantic BJB
FLOETER,S. R.; SOARES-GOMES,A..
Patterns of richness and biogeography of Gastropoda molluscs were determined based on lists of species from five sites along the southwestern Atlantic. The analysis of the distribution patterns of these sites confirmed the existence of a broader transition zone between southern Espírito Santo State (21°S) and Rio Grande do Sul State (32°S). This zone is very heterogeneous, presenting a low endemism rate and a significant number of species common to the near provinces, and does not show enough consistency to be considered as an independent biogeographic province as proposed by Palacio (1980). Observing the distribution of species along the southwestern Atlantic we find an increase in the proportion of species with greatest latitudinal ranges (occurring from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biogeography; Gastropoda; Southwestern Atlantic; Diversity.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400006
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Brooding in a temperate zone land snail: seasonal and regional patterns Naturalis
Sulikowska-Drozd, A.; Maltz, T.K.; Kappes, H..
The goal of this study is to assess if the reproductive strategy of a brooding land snail shifts along a climatic gradient. We focused on the following traits: timing and length of the reproductive season, brood size, ontogenetic dynamics of embryos, and reproductive mode (viviparity versus egg-laying). We dissected the central European door snail Alinda biplicata, collected monthly from eight populations covering the oceaniccontinental climatic gradient within the species’ distribution range. Forty percent of the 1706 dissected individuals were brooding. The species displayed a spring-summer reproductive activity pattern: intrauterine brooding was recorded between March and September; first embryos of a developmental stage that equals that of live-born...
Tipo: Article / Letter to the editor Palavras-chave: Clausiliidae; Gastropoda; Life cycle; Moisture; Mollusca; Vivaparity; 42.73.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/447983
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Carination strikes the eye: extreme shell shapes and sibling species in three Andean genera of the Orthalicidae (Gastropoda, Stylommatophora) Naturalis
Breure, A.S.H..
Two new sibling species are described, Bostryx multiconspectus spec. nov and B. primigenius spec. nov., one of which is carinate. From the carinate taxa known in the Orthalicidae, 16 are occurring at localities in the Andes from northern Peru to northwestern Argentina. They belong to three genera, Bostryx, Neopetraeus and Scutalus. It is hypothesized that carination originated independently in these lineages.
Tipo: Article / Letter to the editor Palavras-chave: Gastropoda; Orthalicidae; Bostryx; Neopetraeus; Scutalus; Argentina; Chile; Peru; Taxonomy; Land snails; 72.73.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/292113
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CHILEAN MARINE MOLLUSCA OF NORTHERN PATAGONIA COLLECTED DURING THE CIMAR-10 FJORDS CRUISE Gayana
Cárdenas,Javiera; Aldea,Cristian; Valdovinos,Claudio.
The tip of the South American cone is one of the most interesting Subantarctic areas, both biogeographically and ecologically. Nonetheless, knowledge of the area's biodiversity, in particular that of the subtidal marine habitats, remains poor. Therefore, in 2004, a biodiversity research project was carried out as a part of the cruise Cimar-10 Fjords, organized and supported by the Chilean National Oceanographic Committee (CONA). The results of the subtidal marine mollusk surveys are presented herein. The samples were collected aboard the Agor 60 "Vidal Gormaz" in winter 2004. The study area covered the northern Chilean Patagonia from Seno de Relocanví (41°31'S) to Boca del Guafo (43°49'S), on the continental shelf from 22 to 353 m depth. The Mollusca were...
Tipo: Journal article Palavras-chave: Biodiversity; Taxonomy; South America; Fjords; Polyplacophora; Gastropoda; Bivalvia; Scaphopoda.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382008000200010
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Ciclo de vida de Dysopeas muibum (Mollusca, Subulinidae) em laboratório: efeito do isolamento sobre padrões biológicos e conquiliomorfométricos Iheringia, Sér. Zool.
Pilate,Vinícius J.; Silva,Lidiane C.; Bessa,Elisabeth C. A..
O conhecimento dos aspectos biológicos e morfológicos dos moluscos terrestres é importante para o desenvolvimento de medidas de controle de pragas e de estratégias de conservação de espécies. O presente trabalho teve como objetivo caracterizar os padrões de biologia e conquiliomorfometria de Dysopeas muibum Marcus & Marcus, 1968 e verificar o efeito do isolamento sobre seu ciclo de vida e a morfometria da concha, em condições de laboratório. Foi realizado o acompanhamento do crescimento da concha, da liberação de filhotes e da mortalidade de 80 moluscos, dos quais 40 foram mantidos isolados e 40 agrupados (10 moluscos por grupo) em condições naturais de temperatura, umidade relativa e fotoperíodo, desde o nascimento até 180 dias de vida, quando...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reprodução; Gastropoda; Morfometria; Concha.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000400003
Registros recuperados: 121
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