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	Provedor de dados ArchiMer (1) Autor Fonteneau, Alain (1) Fromentin, Jean-marc (1) Palavra-chave Bluefin tuna (1) Fishing (1) Long term fluctuations (1) Management measures (1) Simulation modelling (1) Skipjack (1) Sustainability (1) Mais... Tipo do documento Text (1) Ano 2001 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 298 Primeira ... 3 4 5 6 7 8 9 10 11 ... Última Diversity and spatial heterogeneity of mangrove associated sponges of Curaçao and Aruba Naturalis Hunting, E.R.; Soest, R.W.M. van; Geest, H.G. van der; Vos, A.; Debrot, A.O.. Sponges are major epibionts of mangrove roots in the Caribbean. Mangrove sponge communities in the Caribbean mainly consist of species that are typical to this habitat and community compositions often differ from those found on coral reefs nearby. Heterogeneity in species distributions between locations and within locations between roots is often reported. This study quantifies the diversity and abundance of mangrove associated sponges in the inner bays of Curaçao and Aruba and correlates variability of regional sponge diversity with environmental variables measured along the surveyed sites. Tannin concentrations vary between mangrove roots, and were correlated to sponge cover as a possible cause for habitat heterogeneity on a smaller scale. A total of 22... Tipo: Article / Letter to the editor Palavras-chave: Epibionts; Heterogeneity; Mangroves; Spatial variations; Sponges; Tannins; 42.72. Ano: 2008 URL: http://www.repository.naturalis.nl/record/291892 Skeletons in confusion: a review of astrophorid sponges with (dicho-)calthrops as structural megascleres (Porifera, Demospongiae, Astrophorida) Naturalis Soest, R.W.M. van; Beglinger, E.J.; Voogd, N.J. de. We present a review of astrophorid species possessing calthrops megascleres as structural megascleres (including species with dichotriaene modifi cations, but excluding mesotriaene and trichotriaene bearing species). Radiating oxeas characteristic of most astrophorids are lacking in such sponges, but auxiliary oxeas are apparently present in some species. Th ese sponges are currently assigned to two families, Pachastrellidae with four nominal genera Dercitus, Stoeba, Dercitancorina, Halinastra (the latter two generally considered junior synonyms of Stoeba), and Calthropellidae with nominal genera Calthropella, Corticellopsis (usually considered a junior synonym), Pachataxa and Pachastrissa. Our review of many original specimens and extensive new material... Tipo: Article / Letter to the editor Palavras-chave: Sponges; Astrophorida; Pachastrellidae; Dercitus; Calthropellidae; Calthropella; Taxonomy; New species; 42.72. Ano: 2010 URL: http://www.repository.naturalis.nl/record/376610 Ueber Rhopilema rhopalophora Haekel Naturalis Stiasny, G.. In einer kleinen Sammlung Scyphomedusen von Amoy, China, die mir von Kapt. A. K. TOTTON vom British Museum (Natural-History), London, zur Bestimmung eingesendet wurde, fand sich ein Exemplar einer RhopilemaSpecies, das mir sofort durch seinen Habitus auffiel. Es zeigte wohl das typische Verhalten des für dieses Genus so charakteristischen Gefässystems mit dem breiten feinmaschigen Anastomosennetz und der ebenfalls zartmaschigen Netzarkade, doch waren die Mundarme anders gebaut, wie es bei diesem Genus sonst der Fall ist. Sie waren auffallend schlank und trugen einen langen kräftigen Endkolben, ein Verhalten, wie es dem Genus Rhizostoma eigentümlich ist. Bei genauerer Untersuchung des Exemplares ergab sich, dass dasselbe der Beschreibung Haeckels von... Tipo: Article / Letter to the editor Palavras-chave: 42.72. Ano: 1933 URL: http://www.repository.naturalis.nl/record/319076 A Revision Of The Genus Sarcophyton Lesson (Octocorallia, Alcyonacea) Naturalis Verseveldt, J.. The author refers 35 valid species to the genus Sarcophyton. The holotypes of nearly all species could be examined; of only three species (S. elegans, S. glaucum, and S. latum) their depository is unknown. The holotypes of eight species were described earlier by the present author, in four cases in co-operation with other authors; the reader is referred to the literature given in the list of valid species. Among the species described in the present paper there is a new one: S. buitendijki. A list of invalid taxa is added. Four keys may help with the identification of the corals. Tipo: Article / Letter to the editor Palavras-chave: 42.72. Ano: 1982 URL: http://www.repository.naturalis.nl/record/317586 Distribution patterns in Atlantic hydroids Naturalis Medel, M.D.; López-González, P.J.. The present study is a first attempt to comparing the hydroid faunas of the various Zoogeographie areas of the Atlantic Ocean. We restricted ourselves to species of the orders Antho- and Leptomedusae, of which 1050 species were taken into account. The classification of zoogeographic areas used follows Ekman and Briggs, with slight modifications; thus, the Strait of Gibraltar is here considered as a separate zoogeographic area due to its character of a transition zone between several areas in the Northeastern Atlantic Region. Species were arranged into Zoogeographic groups to compare the faunal composition of the various Zoogeographic areas. The Dice similarity index was used for each comparison. The fauna of North-eastern Region can be split into three... Tipo: Article / Letter to the editor Palavras-chave: Hydrozoa; Zoogeography; Faunal affinities; Atlantic Ocean.; 42.72. Ano: 1998 URL: http://www.repository.naturalis.nl/record/317893 Brachiopoden Naturalis Winkler Prins, C.P.; Amler, M.R.W.. A tabular review of the Lower Carboniferous (Mississippian) brachiopods from Germany is given combined with data on their stratigraphic and palaeogeographic distribution. A complete revision proved impossible since too many groups are in need of an extensive reassessment, and many species are poorly known due to their inadequate preservation. Many species are accompanied by comments on their taxonomic status as an explanation of the current state of knowledge. Tipo: Part of book or chapter of book Palavras-chave: Brachiopoden; Germany; 42.72; 38.22. Ano: 2006 URL: http://www.repository.naturalis.nl/record/499260 Phylogeography, genetic diversity and structure of the poecilosclerid sponge Phorbas fictitius at oceanic islands Naturalis Xavier, J.R.; Soest, R.W.M. van; Breeuwer, J.A.J.; Martins, A.M.F.; Menken, S.B.J.. In this study we assessed the sequence variation in the I3-M11 partition of the mtDNA cytochrome c oxidase subunit I gene (COI) in ten populations of the Atlanto-Mediterranean demosponge Phorbas fictitius (Porifera: Poecilosclerida) at two spatial scales: a regional scale comparing mainland (Iberian) and insular (Macaronesian) populations, and a local (Archipelagic) scale focusing on different island populations of the Azores archipelago. A multiple approach combining diversity measures, FST estimates, phylogenetic inference and nested clade phylogeographic analysis was used to assess the genetic structure and elucidate the evolutionary history of this species. Genetic differentiation, based of FST estimates, was found among most populations at both scales... Tipo: Article / Letter to the editor Palavras-chave: Azores; Genetic diversity; Iberia; Macaronesia; Mitochondrial DNA; Porifera; 42.72. Ano: 2010 URL: http://www.repository.naturalis.nl/record/355610 A revision of the genus Sinularia May (Octocorallia, Alcyonacea) Naturalis Verseveldt, J.. In this revision of the genus Sinularia 93 valid species are recorded. The type specimens of 13 species could not be examined, since the depository of the specimens is unknown; nevertheless it is possible to make notes on seven of them in this paper; three were discussed in former papers (S. gyrosa, S. marenzelleri and S. rigida), while the remaining three (S. mayi, S. microspiculata and S. verrucosa) could not be described in this paper. The holotypes of 24 species were described earlier by the present author and the reader is referred to the literature given. The results of the examination of two other species (S. densa and S. larsonae) will appear elsewhere (Records Aust. Mus. Sydney). Altogether 64 species are more or less fully described now; among... Tipo: Article / Letter to the editor Palavras-chave: 42.72. Ano: 1980 URL: http://www.repository.naturalis.nl/record/317650 Het zuurtjeskoraal en anderer kleurrijke koralen Naturalis Hoeksema, B.W.. In de vorige aflevering van de serie 'Met Naturalis in zee' (Onderwatersport september 2003) werd een indruk gegeven van de expeditie naar Bali die door Naturalis was georganiseerd. Enkele bijzondere vondsten kwamen aan bod. In deze aflevering twee door Bert W. Hoeksema ontdekte onbekende diersoorten van Bali, het zuurtjeskoraal, een slak die daarop leeft en enkele van hun naaste familieleden. Zowel bij de koralen als de slakken gaat het om bijzonder kleurrijke dieren. Tipo: Article / Letter to the editor Palavras-chave: Koraalrifonderzoek; Indo-Pacifisch gebied; Bali; Blue Corner; Tanjung Taal; Tanjun Ental; Zuurtjeskoraal; Distochopora vervoorti; Distichopora violacea; Pedicularia vanderlandi; 42.65; 42.72. Ano: 2004 URL: http://www.repository.naturalis.nl/record/270185 New and redescribed species of Alcyonium Linnaeus, 1758 (Anthozoa: Alcyonacea) Naturalis Verseveldt, J.; Ofwegen, L.P. van. Four new species of Alcyonium are described and figured: Alcyonium compactofestucum from the east coast of South Africa, A. rudyi from the west coast of the United States, A. senegalense from Senegal and A. spitzbergense from Spitzbeigen. A. antarcticum Wright & Studer, 1889, A. gruveli TixierDurivault, 1955, A. monodi Tixier-Durivault, 1955, A. patagonicum (May, 1899) and A. sollasi Wright & Studer, 1889, are redescribed and figured. A. paessleri May, 1899, is synonymized with A. antarcticum Wright & Studer, 1889. Tipo: Article / Letter to the editor Palavras-chave: Octocorallia; Alcyoniidae; New species; Redescriptions; Atlantic Ocean; Indo-Pacific Ocean; 42.72. Ano: 1992 URL: http://www.repository.naturalis.nl/record/318612 Annotated catalogue of recent Echinoderm type specimens in the collection of the Rijksmuseum van Natuurlijke Historie at Leiden Naturalis Jangoux, M.; Ridder, C. de. The Leiden Museum houses 82 type specimens of recent echinoderms representing 59 nominal species, one nominal subspecies and one variety. Each species, subspecies or variety is presented (original name, current status, Museum characteristics, brief bibliography, and eventual remarks). Tipo: Article / Letter to the editor Palavras-chave: Echinodermata; Recent; Types; List; Leiden museum; 42.72. Ano: 1987 URL: http://www.repository.naturalis.nl/record/318528 Five new species of the genus Dendronephthya Kukenthal, 1905, (Octocorallia: Nephtheidae) from the Indian Ocean Naturalis Verseveldt, J.; Ofwegen, L.P. van. Five new species of Dendronephthya from the Indian Ocean are described and figured: Dendronephthya (Morchellana) bruuni, D. (M.) hystricosa, D. (M.) pyriformis, D. (M.?) staphyloidea and D. (Roxasia) vervoorti. Tipo: Article / Letter to the editor Palavras-chave: Octocorallia; Nephtheidae; New species; Indian Ocean; 42.72. Ano: 1991 URL: http://www.repository.naturalis.nl/record/318454 Anthozoa - bloemdieren (zeeanemonen & koralen) Naturalis Gitttenberger, A.. Tipo: Article in monograph or in proceedings Palavras-chave: Biodiversiteit; Nederland; Bloemdieren; Zeeanenomen; Koralen; 42.72. Ano: 2010 URL: http://www.repository.naturalis.nl/record/391498 A new Arachnidium species, Arachnidium lacourti spec. nov. (Bryozoa: Ctenostomona), from the coast of The Netherlands Naturalis Hondt, J.-L. d'; Faasse, M.A.. A new species of the genus Arachnidium is described from The Netherlands. The detached distal part of the zooids and their bottle shape are diagnostic of the species. It is recorded from oligo-mesohaline waterways with intensive navigation and it is assumed to have been introduced by shipping. Tipo: Article / Letter to the editor Palavras-chave: Arachnidium; Lageniform; North-western Europe; Introduction; Estuarine; 42.72. Ano: 2006 URL: http://www.repository.naturalis.nl/record/209638 Cnidaria - holtedieren, neteldieren Naturalis Vervoort, W.; Gitttenberger, A.. Tipo: Article in monograph or in proceedings Palavras-chave: Biodiversiteit; Nederland; Holtedieren; Neteldieren; 42.72. Ano: 2010 URL: http://www.repository.naturalis.nl/record/391496 On two new species of Holectypus Desor from the Senonian of South-Limburg near Maastricht, Netherlands Naturalis Engel, H.. Up to now the genus Holectypus Desor (1842, p. 52) 1847, (cf. Mortensen, 1948, Monogr. IV 1, p. 26) in its restricted sense (with 4 genital pores) has not been recorded from the Senonian. So the two specimens described below as H. boschmai nov. spec. may have been remaniated and finally deposited in the Senonian of South-Limburg. They then may belong to the Jurassic species H. corallinus d'Orbigny, 1850. Though the preservation of two other specimens of Holectypus from the Limburg Senonian does not permit to decide whether a fifth genital pore is present, it is presumed there was. These two specimens are described as H. macrostomus nov. spec. As said, up to now no Senonian Holectypus is known with 4 genital pores. Holectypus boschmai nov. spec. (pl. XIV)... Tipo: Article / Letter to the editor Palavras-chave: 38.22; 42.72. Ano: 1964 URL: http://www.repository.naturalis.nl/record/319219 Ergebnisse der Nachuntersuchung einiger Rhizostomeen-Typen Haeckel's und Schultze's aus der Sammlung des Zoologischen Institutes der Universität in Jena Naturalis Stiasny, G.. Durch die Aufstellung des neuen Systems der Rhizostomeen (vergl. meine früheren Mitteilungen (12—15), insbesonders meine „Studien über Rhizostomeen..." (15)), hat sich die Nachuntersuchung zahlreicher Typenexemplare als notwendig erwiesen. Die Originalbeschreibungen der Autoren lassen vielfach Angaben gerade über jene anatomischen Merkmale vermissen, die auf Grund der neueren Untersuchungen für die Beurteilung der systematischen Stellung der einzelnen Formen von Wichtigkeit geworden sind. Eine Anzahl solcher Originale Haeckels konnte bereits bei Gelegenheit der Bearbeitung der Sammlung des Kopenhagener Museums untersucht werden (16), über die Untersuchungsergebnisse weiterer aus dem ehemaligen Museum Godeffroy in Hamburg stammender Originale Haeckel's und... Tipo: Article / Letter to the editor Palavras-chave: 42.72. Ano: 1922 URL: http://www.repository.naturalis.nl/record/319087 Pennsylvanian bryozoans from the Cantabrian Mountains (northwestern Spain) Naturalis Ernst, A.; Winkler Prins, C.F.. Bryozoans from six Pennsylvanian localities in the Cantabrian Mountains (northwestern Spain) are described. The faunas include 54 species, of which two are new, Streblotrypa (Streblotrypa) peculiaris sp. nov. and Bashkirella minor sp. nov. Bryozoans are represented mainly by fenestrates (27 species), followed by rhabdomesine cryptostomes (eleven species), cystoporates (ten species) and trepostomes (six species). Some species were known previously from the Pennsylvanian of northern Spain and the Carnic Alps, others from the Carboniferous of the Russian Platform and North America. Tipo: Article / Letter to the editor Palavras-chave: Bryozoa; Pennsylvanian; Cantabrian Mountains; Spain; 42.72. Ano: 2008 URL: http://www.repository.naturalis.nl/record/314210 Die Scyphomedusen-Sammlung des Naturhistorischen Reichsmuseums in Leiden : II. Stauromedusae, Coronatae, Semaeostomeae Naturalis Stiasny, G.. ALLGEMEINER TEIL. Die Bearbeitung der umfangreichen Scyphomedusen-Sammlung im Rijksmuseum van Natuurlijke Historie in Leiden ist nunmehr so weit vorgeschritten, dass sich eine Übersicht über dieselbe gewinnen lässt. In einer früheren Mitteilung wurde über die Cubomedusen berichtet, eine weitere zur Zeit noch nicht abgeschlossene Abhandlung wird sich mit den Rhizostomeen beschäftigen, während in der vorliegenden Arbeit alle übrigen sonst vorhandenen Scyphomedusen erörtert werden. Dieselben gehören den Ordnungen der Stauromedusen, Coronaten und Semaeostomeen an. Es liegen davon im ganzen über 160 Exemplare vor, die, systematisch geordnet, folgenden Genera und Species angehören: 1. Stauromedusae. Lucernaria campanulata Lamouroux. 2. Coronatae. * Nausithoë... Tipo: Article / Letter to the editor Palavras-chave: 42.72. Ano: 1919 URL: http://www.repository.naturalis.nl/record/319201 Hydroids from the John Murray Expedtion to the Indian Ocean, with revisory notes on Hydrodendron, Abietinella, Cryptolaria and Zygophylax (Cnidaria: Hydrozoa) Naturalis Rees, W.J.; Vervoort, W.. Fourty-four species and one variety of hydroids were identified in the John Murray hydroid collection, obtained from the Gulf of Aden, the Arabian Sea and the northern part of the Indian Ocean, largely from deep water localities. Of these 44 species 2 could be identified only to genus, 1 species is doubtfully mentioned and 5 are new to science. The 44 species we assigned to 2 families of athecate and 6 families of thecate hydroids. In many instances the species have been compared with the type material which, where necessary, was redescribed. A number of additional species, not represented in the John Murray collection has also been redescribed and/or figured. Practically all the John Murray hydroids are figured. Deposition of spirit-preserved type and... Tipo: Article / Letter to the editor Palavras-chave: Cnidaria; Hydrozoa; Genera; Relationships; New species; Deep-water fauna Indian Ocean.; 42.72. Ano: 1987 URL: http://www.repository.naturalis.nl/record/317581 Registros recuperados: 298 Primeira ... 3 4 5 6 7 8 9 10 11 ... Última

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