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Registros recuperados: 31
Primeira ... 12 ... Última
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A new interstitial flatworm (Turbellaria: Promesostomidae) from the Indian Ocean Naturalis
Clerck, G.G. De.
Paraproboscifer alacerregis, representing a new genus and a new species of the interstitial typloplanoid flatworms is described from the Seychelles and Kenya. It is placed in the turbellarian family Promesostomidae, The type locality is on Mahé Island, Seychelles.
Tipo: Article / Letter to the editor Palavras-chave: Turbellaria; Typhloplanoida; Promesostomidae; Indian Ocean; Seychelles; Kenya.; 42.76.
Ano: 1994 URL: http://www.repository.naturalis.nl/record/317638
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A new species of Piper (Piperaceae) from the Seychelles Naturalis
Gerlach, Justin.
A new species of Piper (Piperaceae), P. silhouettanum, is described from the Anse Mondon river valley, Silhouette Island, Seychelles. This species is close to P. nigrum but distinguished by its different venation, glabrous leaves, persistent elongated stipules and reduced bracts. This species is restricted to one valley where it is found in 1.7 hectares.
Tipo: Article / Letter to the editor Palavras-chave: Piper; Piperaceae; Seychelles; Silhouette.
Ano: 2002 URL: http://www.repository.naturalis.nl/record/526279
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Activite des embarcations impliquees dans la peche a la ligne a main aux Seychelles OceanDocs
Bach, P..
Fishing performances of four different types of boats (pirogues, outboard, whalers, schooners) are studied through the analysis of the temporal evolution, between July 1985 and June 1988, for four parameters: numbers of active fishing boats,- total number of fishing trips, - average number of trips/boat, - average trip duration. The trends from these analysis reveals that the boats involved in the handline fishery in seychelles have evolved considerably. These changes must be taken into consideration in the case of an eventual reorganisation of the fleet.
Tipo: Report Palavras-chave: Seychelles; Fishing activity Fishery statistics Line fishing Line fishing http://aims.fao.org/aos/agrovoc/c_4349.
Ano: 1989 URL: http://hdl.handle.net/1834/1349
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Activite des embarcations impliquees dans la peche a la ligne a main aux Seychelles OceanDocs
Bach, P..
Fishing performances of four different types of boats (pirogues, outboard, whalers, schooners) are studied through the analysis of the temporal evolution, between July 1985 and June 1988, for four parameters: numbers of active fishing boats,- total number of fishing trips, - average number of trips/boat, - average trip duration. The trends from these analysis reveals that the boats involved in the handline fishery in seychelles have evolved considerably. These changes must be taken into consideration in the case of an eventual reorganisation of the fleet.
Tipo: Report Palavras-chave: Seychelles; Fishing activity Fishery statistics Line fishing Line fishing.
Ano: 1989 URL: http://hdl.handle.net/1834/1349
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Characterizing fish communities associated with drifting fish aggregating devices (FADs) in the Western Indian Ocean using underwater visual surveys ArchiMer
Taquet, Marc; Sancho, G; Dagorn, L; Gaertner, J; Itano, D; Aumeeruddy, R; Wendling, B; Peignon, C.
We adapted a visual census method, mainly used in demersal and reef fish studies, to characterize fish communities associated to drifting fish aggregating devices (FADs) in the Western Indian Ocean. Drifting FAD associated fishes from both equatorial (Seychelles) and tropical waters (Reunion Island) were examined by divers. A total of 32 species (belonging to 16 families) were observed associated with drifting FADs in equatorial waters, and 24 species (14 families) were found around FADs in tropical waters. Twenty species were found in both regions. The highest number of species observed at a single FAD was 18 (12 +/- 2, mean +/- SD) in equatorial and 13 (10 +/- 3) in tropical waters, not counting circumnatant species loosely associated with the FAD. Some...
Tipo: Text Palavras-chave: Indian Ocean; Reunion Island; Seychelles; Fish aggregations; Visual census; Drifting FAD; Pelagic fishes.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3734.pdf
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Chitons (Mollusca: Polyplacophora) from the Seychelles with description of a new species Naturalis
Kaast, P..
Notes are given on nine chiton species, collected mainly during the 'Oceanic Reefs' Expedition to the Seychelles (1992-1993), with some biogeographical observations. Ischnochiton goudi (family Ischnochitonidae) is described as a new species.
Tipo: Article / Letter to the editor Palavras-chave: Polyplacophora; Indian Ocean; Seychelles; Leptochiton; Ischnochiton; Schizochiton; Chiton; Acanthopleura; Lucilina; Acanthochitona; Cryptoplax; 42.73.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/319379
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Garthambrus, a new genus of deep water parthenopid crabs (Crustacea: Decapoda: Brachyura) from the Indo-Pacific, with description of a new species from the Seychelles Naturalis
Ng, P.K.L..
A new genus of parthenopid crab, Garthambrus gen. nov., characterised by a broad carapace with strongly raised branchial and gastric regions, distinctive rostrum, sub-cylindrical ambulatory meri and a long distal segment of the second male pleopod, is established for six deep water species from various parts of the Pacific. A new species, Garthambrus posidon spec, nov., is also described from depths of between 480 to 600 m off the Seychelles in the Indian Ocean. It differs from its closest congener, G. poupini (Garth, 1993), in having a proportionately broader carapace, less granulated carapace and chelipedal surfaces, and in the form of the carapace regions.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Decapoda; Parthenopidae; Garthambrus gen. nov.; Garthambrus posidon spec. nov.; Deep water; Indo-Pacihc; Seychelles; 42.74.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/318833
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Historical biogeography of Fungia (Pleuractis) spp. (Scleractinia: Fungiidae), including a new species from the Seychelles Naturalis
Hoeksema, B.W..
An update of the phylogeny and biogeography of mushroom coral species belonging to Fungia (Pleuractis) is presented. Among the five species of this monophyletic group, one is described as new to science. This species, Fungia seychellensis spec, nov., was discovered during the Netherlands Seychelles Expedition (1992-1993) in the framework of the Netherlands Indian Ocean Programme 1990/1995.
Tipo: Article / Letter to the editor Palavras-chave: Scleractinia; Fungiidae; Fungia; Pleuractis; Mushroom corals; New species; Phylogeny; Biogeography; Seychelles; 42.72.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/319240
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Insular species of Afrotropical freshwater crabs (Crustacea: Decapoda: Brachyura: Potamonautidae and Potamidae) with special reference to Madagascar and the Seychelles Naturalis
Cumberlidge, N..
The evolutionary relationships between island and mainland faunas of the 24 species of insular freshwater crabs in the Afrotropical region are reviewed in the light of phylogenetic studies. Twenty insular species of freshwater crabs are endemic, and four are also found on the neighboring mainland of Africa. The Atlantic Ocean islands of Sherbro, Bioko, Príncipe, and São Tomé support five species of Potamonautidae, while the Western Indian Ocean islands of the Seychelles, Zanzibar, Pemba, Mafia, and Madagascar together have 16 species of Potamonautidae, and Socotra has three species of Potamidae. Disjunct distributions of non-endemic insular species of Afrotropical freshwater crabs with conspecifics on the mainland are the result of past lower sea levels...
Tipo: Article / Letter to the editor Palavras-chave: Freshwater crabs; Afrotropical islands; Madagascar; Seychelles; Socotra; 42.74.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/280474
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Leontocaris vanderlandi, a new species of hippolytid shrimp (Crustacea: Decapoda: Caridea) from the Seychelles, with an analysis of phylogenetic relations within the genus Naturalis
Fransen, C.H.J.M..
A new species of hippolytid shrimp, Leontocaris vanderlandi spec. nov. is described from deep water off the Seychelles. A comparison with the four other species in the genus is made, and a key to their identification is provided. A phylogenetic analysis of the species within the genus is presented.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Decapoda; Caridea; Hippolytidae; Leontocaris vanderlandi spec. nov.; Seychelles; Phylogeny; 42.74.
Ano: 2001 URL: http://www.repository.naturalis.nl/record/219448
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Management of shark fisheries in Seychelles OceanDocs
Nageon de Lestang, J..
Shark species, both oceanic and coastal, are very common to Seychelle waters. In the past, however, the demand for shark and shark products has always been very erratic. The ever-increasing international concern for the species and potential conflicts between fishermen and conservation groups has highlighted the issue. In the Seychelles, the shark are caught by gillnets in inshore waters and by hook-and-line and purse seine offshore. Until very recently there were no regulations controlling the shark fishery, but, partly in response to initiatives by a local conservation group, fishing for sharks with nets has been banned since 1 August 1998. A review is provided of the present situation of the fishery whilst underscoring the difficulties of formulating a...
Tipo: Report Palavras-chave: Seychelles; SHARK FISHERIES; Fishery management; Fishery regulations; Legislation; Shark fisheries; Fishery management; Legislation; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4253.
Ano: 1998 URL: http://hdl.handle.net/1834/1311
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Management of shark fisheries in Seychelles OceanDocs
Nageon de Lestang, J..
Shark species, both oceanic and coastal, are very common to Seychelle waters. In the past, however, the demand for shark and shark products has always been very erratic. The ever-increasing international concern for the species and potential conflicts between fishermen and conservation groups has highlighted the issue. In the Seychelles, the shark are caught by gillnets in inshore waters and by hook-and-line and purse seine offshore. Until very recently there were no regulations controlling the shark fishery, but, partly in response to initiatives by a local conservation group, fishing for sharks with nets has been banned since 1 August 1998. A review is provided of the present situation of the fishery whilst underscoring the difficulties of formulating a...
Tipo: Report Palavras-chave: Seychelles; SHARK FISHERIES; Fishery management; Fishery regulations; Legislation; Shark fisheries; Fishery management; Legislation; Sharks.
Ano: 1998 URL: http://hdl.handle.net/1834/1311
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Net fishing and its management in Seychelles OceanDocs
Payet, R.J..
Net fishing is an important component of the artisanal fishery of the Seychelles. It is composed of beach seine, encircling and set gillnets. This report reviews net fishery and its impact on the environment and fish stocks and provides a framework for its management. There are no current management measures for the traditional net fisheries except that all nets above 50 metres requires a license with a lead seal bearing the licence number. Certain irresponsible uses of these nets have ben acknowledged, principally the 'Met outaz' fishing strategy, incidental catch of marine mammals and the presence of commercially important juvenile fish in the beach seine fishery. SFA has addresses these issues rationally and management options are explored followed by...
Tipo: Report Palavras-chave: Net fishing; Fishery management; Seychelles; Fishery regulation; Artisanal fishing; Net fishing; Beach seines.
Ano: 1997 URL: http://hdl.handle.net/1834/771
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Notes on the genus Amphiprion Bloch & Schneider, 1801 (Teleostei: Pomacentridae) and its host sea anemones in the Seychelles Naturalis
Hartog, J.C. den.
The genus Amphiprion Bloch & Schneider, 1801, is represented in the Seychelles by two species, A. akallopisos Bleeker, 1853, and the endemic A. fuscocaudatus Allen, 1972. Throughout its distributional range Amphiprion akallopisos has exclusively been recorded to associate with the clownfish anemones Heteractis magnifica (Quoy & Gaimard, 1833) and Stichodactyla mertensii Brandt, 1835. During the Netherlands Indian Ocean Programme (NIOP) Seychelles Expedition 19921993 this was confirmed for the Seychelles, although the species was predominantly found with H. magnifica, the most common host anemone in the islands. So far, Amphiprion fuscocaudatus had exclusively been reported as a symbiont of Stichodactyla mertensii. During the NIOP Seychelles...
Tipo: Article / Letter to the editor Palavras-chave: Seychelles; Indo-West Pacific; Amphiprion; Clownfish anemones; Clownfish/host associations; Host preference; Competition; New records; 42.81.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/319315
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Octocorallia Naturalis
Ofwegen, L.P. van; Slierings, M..
Tipo: Part of book or chapter of book Palavras-chave: Scleractinia; Hydrocorals; Octocorals; Seychelles; Fungiidae; New species; 42.72.
Ano: 1994 URL: http://www.repository.naturalis.nl/record/619237
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Results of SFA preliminary experiments on artificial spat collection of the black pearl oyster Pinctada margaritifera OceanDocs
Bautil, B.; Boulle, D.P..
Forty oyster spat collector bags were submerged at two different sites near Mahe island fofr a period between 3.2 and 11 months. Strong currents in the south-east monsoon period resulted in a few bags lying in the sand which was detrimental to spat settlement. The mean settlement rate was calculated at 15.6 oysters per bag, however 71_310= of the bags had more than 10 oysters per bag. Considering only those bags, the settlement averaged at 27 oysters per bag. The sizes of oysters in collector bags after different soaking times, indicate that growth rate in the first few months is higher than on French Polynesia. Growth rates of oysters maintained in a cage indicated an average increase of 21.7 mm in five months, between the size of 25.9 mm and 47.76 mm....
Tipo: Report Palavras-chave: Pearl culture; Seed collection; Seychelles; Spat PINCTADA MARGARITIFERA Aquaculture development Oyster culture Oyster culture http://aims.fao.org/aos/agrovoc/c_5483.
Ano: 1992 URL: http://hdl.handle.net/1834/1353
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Results of the spiny lobster fishery for November and December 1992 OceanDocs
Jacques, R.M..
This report reviews the lobster catch during the months of November and December 1992. In total, 38 fishing units were licenced: 26 on Mahe, 7 on La Digue and 5 on Praslin. 8 licence holders provided no information and claimed that they undertook no fishing trips at all. Of the remainder, each fishing unit comprised an average of 3 men. 2 fishing units used traps as the only catching method, 27 used snorkelling and 1 a combination of traps and snorkelling. For the two month period, an estimated catch of 4.9 tonnes of Spiny Lobster for all sites were landed; of which Mahe contributed an estimated 2.8 tonnes. For the month of November only, a total catch of 2.7 tonnes of lobsters were estimated and for the month of December a total of 2.2 tonnes were...
Tipo: Report Palavras-chave: Results; Seychelles; Lobster catches Methodology Lobster fisheries Methodology http://aims.fao.org/aos/agrovoc/c_12522.
Ano: 1993 URL: http://hdl.handle.net/1834/1321
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Seychelle Fishing Authority: Annual Report 1997 OceanDocs
Anon..
Tipo: Book Palavras-chave: Seychelles; ANNUAL REPORTS; INDUSTRIAL FISHERIES; Fishery institutions.
Ano: 1998 URL: http://hdl.handle.net/1834/1328
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Seychelles Fishing Authority Annual Report 1989 OceanDocs
Anon..
Tipo: Report Palavras-chave: Seychelles; Annual reports; Tuna fisheries; Artisanal fishing.
Ano: 1990 URL: http://hdl.handle.net/1834/1350
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Seychelles Fishing Authority annual report 1990 OceanDocs
Anon..
Tipo: Book Palavras-chave: Seychelles; TUNA FISHERIES; FISHERY DEVELOPMENT; ANNUAL REPORTS; Artisanal fishing; International cooperation; International cooperation; Http://aims.fao.org/aos/agrovoc/c_16378.
Ano: 1991 URL: http://hdl.handle.net/1834/1317
Registros recuperados: 31
Primeira ... 12 ... Última
 

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