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Registros recuperados: 32
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A case of associated occurrence of the crab Lauridromia inter-media (Laurie, 1906) (Crustacea: Decapoda: Dromiidae) and the actinian Nemanthus annamensis Carlgren, 1943 (Anthozoa: Actiniaria: Nemanthidae) Naturalis
Lavaleye, M.S.S.; Hartog, J.C. den.
Members of the crab family Dromiidae tend to cover their carapace mostly with sponges or colonial tunicates. More rarely are used other objects or organisms such as solitary Tunicata, Zoantharia (= encrusting anemones), valves of Bivalvia, etc.; a review of these is presented. A new association of a dromiid crab Lauridromia intermedia (Laurie, 1906) and an actinian Nemanthus annamensis Carlgren, 1943, is described and discussed. Lauridromia intermedia is recorded for the first time from the continental shelf of East Africa.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea Decapoda Dromiidae; Lauridromia intermedia; Actiniaria Nemanthidae; Nemanthus annamensis; Association; First record; Kenya; Review; 42.74.
Ano: 1995 URL: http://www.repository.naturalis.nl/record/319275
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A new endemic Actinia species (Actiniaria: Actiniidae) from the central Macaronesian Archipelagos Naturalis
Hartog, J.C. den; Ocaña, O..
The presence of some endemic taxa of the genus Actinia from Madeira and the Canary Islands is discussed. A new species, Actinia nigropunctata, is described, and some characters of the poorly known Actinia virgata are discussed. In addition, we discuss the main characters proposed by Schmidt (1971) to distinguish species of Actinia.
Tipo: Article / Letter to the editor Palavras-chave: Actinia; Actiniaria; Actiniidae; Macronesian Archipelagos; Atlantic; 42.79.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/216146
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A note on an interesting association of the crab Platypodiella picta (A. Milne-Edwards 1869) and species of Zoantharia Naturalis
Hartog, J.C. den; Holthuis, L.B..
In the framework of the CANCAP-Project, a long-term oceanographic collecting program performed by the Rijksmuseum van Natuurlijke Historie, extensive shore collections were made from 1976 onwards on most of the Macaronesian Islands. During the collecting trips, a very ornamental crab, Platypodi ella picta (A.MILNE EDWARDS, 1869) was found on three occasions by the senior author. In addition the species was collected on the coast of Senegal. In all cases it was found associated with species of Zoantharia.
Tipo: Article / Letter to the editor Palavras-chave: Platypodi ella picta; Zoantharia; Crab; CANCAP; Rijksmuseum van Natuurlijke Historie; Macaronesian Islands; Senegal; 42.74.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/460097
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A record of a red-footed Booby Sula Sula (L.) from the Cape Verde Islands, with a review of the status of this species in the South Atlantic Ocean Naturalis
Hartog, J.C. den.
The first Western Palearctic record of a Red-footed Booby Sula sula (L., 1766), a brown whitetailed morph observed on Cima (Cape Verde Islands), is described. The status of this species in the tropical South Atlantic Ocean is evaluated. At present, Fernando de Noronha is the only South Atlantic stronghold of the species (ca. 4000 individuals; cf. Oren, 1984). The species has disappeared, or almost so, from other islands (St. Helena: absent; Ascension:0-30 individuals; Ilha da Trindade: less than 100 pairs). A link may exist between the apparent recent increase of the population of Fernando de Noronha and the apparent recent decline of the Trindade population. It seems possible that the Trindade population for some unknown reason has migrated to Fernando de...
Tipo: Article / Letter to the editor Palavras-chave: Sula sula; Cape Verde Islands; South Atlantic Islands; Status; 42.83.
Ano: 1987 URL: http://www.repository.naturalis.nl/record/318544
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A redescription of the Sea Anemone Bunodosoma Biscayensis (Fischer, 1874) (Actiniaria, Actiniidae) Naturalis
Hartog, J.C. den.
Bunodes biscayensis Fischer, 1874, a species of Actiniaria described from Moulleau, Arcachon, south-western coast of France, and never recorded since, was rediscovered in July 1985 and found again in 1986 and 1987 in several localities along the French "Côte Basque" between the mouth of the river Adour and St. Jean-de-Luz. The species is here redescribed and referred to Bunodosoma Verrill, 1899, a genus of tropical and subtropical Atlantic and West-American intertidal and shallow water forms, hitherto not recorded from the Mediterranean and/or the Atlantic coast of Europe. Speculations are advanced as to the possible further distribution of B. biscayensis. A discussion is added concerning the morphological terms verruca and vesicle. The study is completed...
Tipo: Article / Letter to the editor Palavras-chave: Actiniaria; Bunodosoma biscayensis; Verruca; Vesicle; Nematocysts; Distribution; France; Côte Basque; 42.72.
Ano: 1987 URL: http://www.repository.naturalis.nl/record/318818
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A study of stomach contents of Cory's shearwater, Calonectris diomedea borealis (Cory, 1881) (Aves: Procellariidae), from the Macaronesian Islands Naturalis
Hartog, J.C. den; Clarke, M.R..
Data are presented on the diet of Cory's Shearwater Calonectris diomedea borealis (Cory, 1881) resulting from stomach investigations based on 18 birds from Hierro (Canary Islands), 5 from Selvagem Grande (Selvagens or Salvage Islands), 2 from São Miguel and 1 from São Jorge (Azores), collected between 1977 and 1981. These data confirm the general idea that this shearwater feeds principally on fish and squid. The glandular stomachs of 9 birds from Hierro contained significant quantities of food, varying in wet weight from ca. 4-40 gm; in four cases more or less complete squids were present, all Ommastrephes bartrami (Le Sueur, 1821). In addition, the gizzards of all 26 birds, except one, contained fragments of squid beaks belonging to 12 species. Several of...
Tipo: Article / Letter to the editor Palavras-chave: Procellariidae; Calonectris diomedea borealis (Cory; 1881); Diet; Stomach contents; Cephalopoda; SE North Atlantic; Macaronesia; 42.83.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/318278
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A study on the Gut contents of live Juvenile Loggerhead Turtles, Caretta Caretta (Linnaeus) (Reptilia, Cheloniidae), from the South-Eastern part of the North Atlantic Ocean, with emphasis on Coelenterate Identification Naturalis
Nierop, M.M. van; Hartog, J.C. den.
The gut contents of five juvenile individuals of the loggerhead turtle Caretta caretta (L.) from waters around Madeira, Selvagem Grande (Selvagens Islands) and São Miguel (Azores) were analysed macro- and microscopically. Macroscopic investigations showed that epipelagic salps (e.g., Pyrosoma atlanticum Péron) and gastropods (e.g., Ianthina spp. and Pterotrachea spp.) constituted an important part of the food remains present in these loggerheads. To a lesser extent this also holds for organisms such as goose-barnacles (Lepas spp.). and Idotea metallica Bosc, which live on drifting materials, including algae. Microscopic examination revealed the presence in all turtles of large numbers of nematocysts, deriving mainly from Siphonophora and to a lesser extent...
Tipo: Article / Letter to the editor Palavras-chave: Cheloniidae; Caretta caretta; Food; Nematocysts; Siphonophora; Hydromedusae; Scyphozoa; Crustacea; Mollusca; Tunicata; South-eastern North Atlantic; 42.82.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/319311
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A study on the Gut contents of six Leathery Turtles Dermochelys Coriacea (Linnaeus) (Reptilia: Testudines: Dermochelyidae) from British waters and from the Netherlands Naturalis
Hartog, J.C. den; Nierop, M.M. van.
Microscopical investigations of the gut contents of six individuals of Dermochelys coriacea from southern England and the North Sea revealed the presence in all of these of numerous nematocysts, mainly scyphozoan. Only six species of Scyphozoa occur in British shallow waters and in the North Sea, viz., Pelagia noctiluca (Forskål), Chrysaora hysoscella (L.), Aurelia aurita (L.), Cyanea capillata (L.), C. lamarckii (L.) and Rhizostoma octopus (L.). For the purpose of comparison and identification an inventory was made of the cnidom of these six species (based on preserved material). Nematocysts of one or more of these species appeared to be present in each of the turtles, all six species being represented. One of the turtles in addition appeared to have...
Tipo: Article / Letter to the editor Palavras-chave: Scyphozoa; Leptomedusae; Siphonophora; Testudines; Dermochelys; Nemato- cysts; British Isles; Netherlands; Food; Digestive tract; Anatomy; Functional morphology.; 42.82.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/317798
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Actiniaria from Ria de Arosa, Galicia, northwestern Spain, in the Netherlands Centre for Biodiversity Naturalis, Leiden Naturalis
Hartog, J.C. den; Ates, R.M.L..
Twentysix species of sea anemones (Actiniaria) collected in Galicia, northwestern Spain are present in the collection of the Netherlands Centre for Biodiversity Naturalis. They are listed and discussed. The cnidom of seventeen species is surveyed. Diadumene cincta is not a recent immigrant in western Europe. Sagartia luciae is (re)assigned to the genus Diadumene. The presence of Sagartia troglodytes in the Mediterranean is doubtful at best.
Tipo: Article / Letter to the editor Palavras-chave: Distribution; New records; Sea anemones; 42.79.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/376599
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Additional records of Actiniaria (Anthozoa) from Greece Naturalis
Chintiroglou, Ch.; Hartog, J.C. den.
A small collection of four species of Actiniaria, partly representing new records for Greece and the eastern Mediterranean, is described and discussed. These four species are: Bunodeopsis strumosa Andres, 1881, Edwardsia claparedii (Panceri, 1869), Actinia cari delle Chiaje, 1825, and Phymanthus pulcher (Andres, 1883).
Tipo: Article / Letter to the editor Palavras-chave: Actiniaria; New records; Greece; Ionian and Aegean Seas; Eastern Mediterranean; Nematocysts; 42.72.
Ano: 1995 URL: http://www.repository.naturalis.nl/record/319061
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An early note on the occurrence of the Magnificent Frigate Bird, Fregata magnificens Mathews, 1914, in the Cape Verde Islands: Columbus as an ornithologist Naturalis
Hartog, J.C. den.
The importance of ornithological observations with respect to Columbus' discovery of America as recorded in the "Diario del descubrimiento" is recognized. The fact that his first and crucial crossing of the Atlantic coincided with the autumn migration may have contributed to its success. Columbus' log contains the first historical record of the [Magnificent] Frigate Bird, Fregata magnificens Mathews, 1914, in the Cape Verdes, with a surprisingly accurate description of its characteristic habits.
Tipo: Article / Letter to the editor Palavras-chave: Columbus; "Diario del descubrimiento"; Cape Verde Islands; Phaethon aethereus; Fregata magnificens; First historical record; Piratical behaviour; Autumn bird migration; 42.83.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/318022
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An unusual sea anemone from slope depths of the tropical west Pacific: range extension and redescription of Isactinernus quadrilobatus Carlgren, 1918 (Cnidaria: Actiniaria: Actinernidae) Naturalis
Fautin, D.G.; Hartog, J.C. den.
The sea anemone species Isactinernus quadrilobatus Carlgren, 1918, and Synactinernus flavus Carlgren, 1918, which were described in new monotypic genera from few specimens collected in southern Japan, are synonymized, based on many more specimens from the South Pacific. As well as the geographic range, the depth range of this species has been extended to 110-700 m. The species had been distinguished primarily on whether the oral disc had four lobes (I. quadrilobatus) or eight (Synactinernus flavus) – we conclude their number is largely related to size of the animal. Other features that Carlgren had used to differentiate the genera (and species) are inconsistently present and do not correlate with lobe number.
Tipo: Article / Letter to the editor Palavras-chave: Endocoelantheae; Mesenteries; Biogeography; Synactinernus flavus; 42.79.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/220298
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Associated occurrence of Cyclocoeloma tuberculata Miers, 1880 (Decapoda: Majidae) and species of Discosomatidae (Anthozoa: Corallimorpharia) Naturalis
Hartog, J.C. den.
Several cases are reported of associated occurrence of the crab Cyclocoeloma tuberculata Miers, 1880 (Majidae) and species of Discosomatidae (Anthozoa: Corallimorpharia) carried on the crab's carapace, and colonies of Xeniidae (Alcyonacea) carried on the ambulatory legs. This is the first record of an association of a crab and a corallimorpharian.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Decapoda; Brachyura; Majidae; Cyclocoeloma tuberculata; Anthozoa; Corallimorpharia; Discosoma; Association; Indo-West-Pacific; Indonesia; Snellius II Expedition 1984; 42.74.
Ano: 1990 URL: http://www.repository.naturalis.nl/record/319380
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Bird observations in the Selvagens Islands (21-23 October 1978 and 27 May-7 June 1981) [CANCAP-Project] Naturalis
Hartog, J.C. den; Norrevang, A.; Zino, P.A..
In the frame work of the CANCAP-Project of the Rijksmuseum van Natuurlijke Historie, Leiden, The Netherlands, the Salvage Islands were visited twice: in 1978 (October 21-23) and 1980 (May 26-June 7), respectively. Bird observations were made on both occassions.
Tipo: Article / Letter to the editor Palavras-chave: Ornithology; Birds; Breeding birds; Breeding pairs; Vagrant birds; Migrant birds; Roseate Terns; Sterna dougallii; Cory's Shearwater; Calonectris diomedea borealis; Short-eared owl; Asio flammeus; Migrant invations; Populations; Observations; Meteorology; New record; Salvage Islands; Macaronesia; CANCAP-Project.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/658998
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Corallimorpharia collected during the CANCAP expeditions (1976-1986) in the south-eastern part of the North Atlantic* Naturalis
Hartog, J.C. den; Ocaña, O.; Brito, A..
Species of Corallimorpharia collected during the CANCAP expeditions in the south-eastern part of the North Atlantic are described and discussed, altogether five species belonging to three genera of Corallimorphidae: the shallow water forms Corynactis viridis Allman, 1846, Pseudocorynactis caribbeorum den Hartog, 1980, and P. caboverdensis spec. nov., and the deep-sea forms Corallimorphus cf. atlanticus Carlgren, 1934, and C. ingens Gravier, 1918. The taxonomic status of the representatives of the genus Corynactis Allman, 1846, is discussed. All temperate to subtropical species described so far belong to a group of closely related allopatric taxa forming the Corynactis viridis-complex, possibly representing a single species only. The colours of Corynactis...
Tipo: Article / Letter to the editor Palavras-chave: Corallimorpharia; Corallimorphidae; Corallimorphus; Corynactis; Pseudocorynactis; Sideractis; Nectactis; Nematocysts; Ontogeny; Distribution; Feeding; CANCAP-project; South-eastern North Atlantic; Macaronesia.; 42.72.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/317646
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Descriptions of two new Ceriantharia from the Caribbean region, Pachycerianthus curacaoensis n. sp. and Arachnanthus nocturnus n. sp., with a discussion of the cnidom and of the classification of the Ceriantharia Naturalis
Hartog, J.C. den.
Two new Ceriantharia, Pachycerianthus curacaoensis and Arachnanthus nocturnus, both from the Caribbean region, are described. It is recommended to avoid the terms proto- and metamesenteries in taxonomie descriptions. The cnidom of the Ceriantharia is discussed; a subdivision of the spirulae (=b-rhabdoids) and penicilli ( = p-rhabdoids) differing from that of Schmidt (1972) is given. The anoplotelic character of the terminal tube of the penicilli (Schmidt, 1972) is doubted on the basis of light microscopical investigations. Mainly on the basis of the study of Botruanthus benedeni (Torrey & Kleeberger, 1909) (Botrucnidiferidae), the 2 newly described species (respectively belonging to the Cerianthidae and the Arachnactidae), and of the data available in...
Tipo: Article / Letter to the editor Palavras-chave: 42.72.
Ano: 1977 URL: http://www.repository.naturalis.nl/record/319294
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Een expeditie naar de Kaapverdische Eilanden Naturalis
Hartog, J.C. den.
Op 1 juni 1982, 's morgens om 9 uur, vertrok het Nederlandse oceanografische vaartuig "Tydeman" uit de haven van Santa Cruz de Tenerife voor een marien-biologische expeditie naar de Kaapverdische eilanden. Aan boord bevond zich een team van onderzoekers en assistenten van het Rijksmuseum van Natuurlijke Historie, het Rijksherbarium (beiden uit Leiden) en het Geologisch lnstituut van de Universiteit van Groningen. De expeditie paste in het kader van het zogenaamde CANCAP-project (no. 45) van genoemde instituten, waarmee reeds in 1976 werd aangevangen. Drs. J.C. den Hartog, medewerker van het Rijksmuseum van Natuurlijke Historie, was aan boord van de "Tydeman" en zette zijn bevindingen voor dit tijdschrift op papier.
Tipo: Article / Letter to the editor Palavras-chave: Capeverdian Islands; Marine biology; CANCAP; 42.94.
Ano: 1985 URL: http://www.repository.naturalis.nl/record/460098
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Een expeditie naar de Kaapverdische Eilanden (2) Naturalis
Hartog, J.C. den.
Tipo: Article / Letter to the editor Palavras-chave: Capeverdian Islands; Marine biology; CANCAP; 42.94.
Ano: 1986 URL: http://www.repository.naturalis.nl/record/461346
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Herinneringen aan een reis naar Sint-Helena Naturalis
Hartog, J.C. den.
Volgens gangbare inzichten zijn vrijwel alle oceanische eilanden uit zee opgerezen, wat impliceert dat ze oorspronkelijk kaal en zonder enig leven waren. Biologen zijn daarom bijzonder geïnteresseerd in het karakter en de herkomst van de huidige flora en fauna van die eilanden en in de kolonisatieprocessen. In het algemeen kan men stellen dat de kans op kolonisatie kleiner is naarmate een eiland verder van het vasteland (of van een ander eiland) verwijderd ligt. In feite is de zaak natuurlijk wel iets gecompliceerder, en spelen allerlei factoren een rol. Voor landorganismen zijn dit onder meer de klimatologische en meteorologische omstandigheden in het te overbruggen gebied, en de vestigingsmogelijkheden in de nieuwe omgeving. Kolonisatie door mariene...
Tipo: Article / Letter to the editor Palavras-chave: Islands; Transformation; Colonisation; Endemism; Saint Helena; 42.94.
Ano: 1985 URL: http://www.repository.naturalis.nl/record/460100
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Herinneringen aan een reis naar Sint-Helena (2) Naturalis
Hartog, J.C. den.
St.-Helena, waar Napoleon zijn einde vond, is maar een klein eiland. Toch ontwikkelde zich er in de loop van de evolutie een aantal merkwaardige eilandvormen, zowel bij de planten als de dieren. Helaas zijn er daarvan verloren gegaan door ernstige fauna- en floravervalsing.
Tipo: Article / Letter to the editor Palavras-chave: Islands; Endemism; Saint Helena; Ecology; 42.97.
Ano: 1989 URL: http://www.repository.naturalis.nl/record/460121
Registros recuperados: 32
Primeira ... 12 ... Última
 

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