Consulta: subjectFacets:"Cysts"
Registros recuperados: 21
Data/hora: 03/06/2024 05:35:30

ЖИЗНЕСПОСОБНОСТЬ DUNALIELLA SALINA В ЗАВИСИМОСТИ ОТ УСЛОВИЙ ОБЕЗВОЖИВАНИЯ И ДЛИТЕЛЬНОСТИ ХРАНЕНИЯ В СОСТОЯНИИ АНГИДРОБИОЗА
Provedor de dados: 13
Autores: Харчук, И. А.
Изучена жизнеспособность Dunaliella salina в зависимости от условий обезвоживания и длительности хранения в состоянии ангидробиоза Показано, что неинцистированные клетки D. salina сохраняют жизнеспособность в обезвоженном состоянии в течение 7 суток. Более длительное их хранение приводит к необратимым изменениям в клетках и потере способности восстанавливать жизнеспособность. Биохимические исследования зарегистрировали деструкцию пигментного ком- плекса. Зависимости инцистирования клеток от температуры обезвоживания, длительности дегидратации, остаточной влажности культуры после высушивания и времени хранения не выявлено. Во всех случаях цисты прорастали через 20 дней. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Palavras-chave: Dunaliella salina; Жизнеспособность; Ангидробиоз; Цисты; Биохимический состав; Життєздатність; Ангідробіоз; Біохімічний склад; Viability; Anhydrbiosis; Cysts; Biochemical structure.
Ano: 2010
URL: http://repository.ibss.org.ua/dspace/handle/99011/1873

Modifications ultrastructurales du chorion dans les kystes prehumidifies d'Artemia.
Provedor de dados: 5
Ultrastructural changes of the chorion were studied in prehydrated Artemia cysts. After incubation for 12, 24, 48 and 72 hours, in hygrostats (under controlled relative humidity, that range from 19% to 99%), the authors observed in cysts that were maintained (for at least 48 h in 99% of relative humidity, some chorionic alveoli containing electron dense structures. They presume that ions and/or molecules migrate during prehydration from inside the cyst to the alveolar layer.
Tipo: Text
Palavras-chave: Artemia franciscana; Branchiopoda; Marine crustaceans; Cysts; Cytology; Hydration; Biological development.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1822.pdf

Viability, growth and toxicity of Alexandrium catenella and Alexandrium minutum (Dinophyceae) following ingestion and gut passage in the oyster Crassostrea gigas
Provedor de dados: 5
Autores: Laabir, Mohamed; Amzil, Zouher; Lassus, Patrick; Masseret, Estelle; Tapilatu, Yosmina; De Vargas, Romain; Grzebyk, Daniel.
Adult oysters Crassostrea gigas were experimentally fed with Alexandrium catenella and Alexandrium minutum which are responsible for recurrent toxic blooms in French coastal waters. C. gigas produced faeces and pseudofaeces containing intact and viable temporary pellicular cysts of these two Paralytic toxin producing species. When incubated in favourable conditions, these pellicular cysts were able to germinate at high rates (between 74 and 94%) and the resulting vegetative cells divided with growth rates close to the non-ingested cells (control). The toxin profile of the vegetative cells originated from the germinated temporary cysts was analyzed by liquid chromatography/ fluorescence detection. Total toxin content of newly germinated cells was lower than...
Tipo: Text
Palavras-chave: Paralytic shellfish poisoning; Oysters; Cysts; Alexandrium minutum; Alexandrium catenella.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2622.pdf

Etude des kystes de dinoflagelles en Baie de Vilaine. I - Synthèse bibliographique
Provedor de dados: 5
Autores: Larrazabal, Maria Eduarda.
The study of modern marine dinoflagellate cysts is especially attractive when considering toxic or red tide species. In the case of Vilaine Bay (South Brittany - France) the evolution of bottom marine sediments between 1965 and 1985 (increase of muddy areas) as weIl as summer blooms of Prorocentrum, Protoperidinium and Gonyaulax gave arguments for credit to the existence of cysts corresponding to that generas. After a brief analyse of recent litterature first results of 1986 sampling operation confirm initial hypothesis.
Tipo: Text
Palavras-chave: Dinoflagelles; Kystes; Baie de Vilaine; Dinoflagellates; Cysts; Vilaine bay.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00138/24908/23001.pdf

Reclassification of Gonyaulax verior (Gonyaulacales, Dinophyceae) as   Sourniaea diacantha gen. et comb. nov.
Provedor de dados: 5
Autores: Zhang, Wei; Li, Zhun; Mertens, Kenneth; Derrien, Amelie; Pospelova, Vera; Carbonell-moore, M. Consuelo; Bagheri, Siamak; Matsuoka, Kazumi; Shin, Hyeon Ho; Gu, Haifeng.
Gonyaulax verior was initially described as Amylax diacantha from Belgian coastal waters a century ago but its detailed morphology needed restudy. Here, we established nine strains of G. verior by germinating cysts or isolating cells from localities from the European Atlantic to the Caspian Sea and the Pacific Ocean. Both cyst and thecal morphology were examined by light and scanning electron microscopy. SSU, LSU and/or ITS-5.8S rRNA gene sequences were obtained from all strains. Cells of G. verior have a plate formula of Po, 4′, 2a, 6-7′′, 6C, 6S, 6′′′, 1p, 1′′′′ with an L-type ventral organisation, characterised by two either straight or curved antapical horns of variable length. Cysts of G. verior are oval, smooth and contain one or two yellow...
Tipo: Text
Palavras-chave: Amylax diacantha; Cysts; Dinoflagellate; Gonyaulax longispina; Molecular phylogeny.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00621/73347/72625.pdf

Studies Related to Immunosuppression in Mice with Chronic Toxoplamosis
Provedor de dados: 19
Autores: Ito, Masanari; Igarashi, Ikuo; Fujita, Yukitoki; Omata, Yoshitaka; Saito, Atsushi; Nakagawa, Michio; Claveria, Florencia G.; Suzuki, Naoyoshi.
Palavras-chave: Toxoplasma; Cysts; Mice; Immunosuppression; Immunoregulator; Obiopeptide-1.
Ano: 1993
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/193

Exploitation et optimisation de la production des cystes du crustacé "Artemia tunisiana" (bowen et sterling, 1978) dans la saline de Sfax
Provedor de dados: 20
Autores: Aloui, N.; Amorri, M.
La saline de Sfax constitue le meilleur site pour l’exploitation et la production d’Artemia en Tunisie. La production de cystes est exploitée chaque année pour être utilisée dans l’alimentation des larves de poissons. Cette production est estimée à 30 kg de cystes poids sec. Toutefois, lors de nos campagnes de récolte, nous avons enregistré de grandes pertes de cystes occasionnées par les vents emportant les cystes qui seront mélangés avec le sable.    Afin de minimiser les pertes et optimiser la production naturelle de la saline, nous avons jugé utile, d’installer des barrages dans les coins des bassins à Artemia pour s’opposer à l’action du vent. Par ailleurs, nous avons fait un suivi mensuel de l’abondance des cystes récoltés et de quelques paramètres...
Tipo: Journal Contribution
Palavras-chave: Barriers; Brine shrimp culture; Dissolved oxygen; Environmental conditions; Exploitation; Feeding; Fish larvae; Food organisms; Salinity effects; Spatial variations; Temporal variations; Cysts; Artemia culture; Prawns and shrimps; Crustaceans; Artemia.
Ano: 2009
URL: http://hdl.handle.net/1834/4747

Estudios ecológicos en el Golfo San Jorge y adyacencias (Atlántico sudoccidental). Distribución, abundancia y variación estacional del fitoplancton en relación a factores físico-químicos y la dinámica hidrológica.
Provedor de dados: 20
Autores: Akselman, R.
This study was based on four seasonal cruises during 1984 and 1985.  It revealed a thermo-haline frontal system formed by the advection of the Coastal Water mass flowing in two branches, one running towards the coast and the other mid-shelf directed. The thermocline developed between late spring and autumn results in a low inorganic nutrient concentration in the upper layer. Nonetheless in winter, a vertical homogeneity and high nutrient concentration were observed.  Phytoplankton development presented a typical temperate-seas annual cycle. In winter, reduced populations were dominated by diatoms. The highest biomass concentration in the cycle coincided with the spring blooming, to which Thalassio sira anguste-lineata,Alexandrium tamarense, Heterocapsa...
Tipo: Theses and Dissertations
Palavras-chave: Phytoplankton; Abundance; Trophic relationships; Cysts; Seasonal variations; Seasonal thermocline; Plankton surveys; Environmental effects; Phytoplankton; Cysts; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_34811.
Ano: 1996
URL: http://hdl.handle.net/1834/1464

Floraciones algales nocivas en la bahía de Santiago de Cuba
Provedor de dados: 20
Autores: Gómez, L.; Díaz, U.; Fernández, A.; Licea, Y.; Álvarez, I.
Santiago de Cuba bay is an ecosystem eutrophic and vulnerable to FANs events. This work preset the results of monitoring during three year in eight stations located in the less polluted area of the bay, leading to the determination of the possible seasonal distribution and FANs frequency. 117 Phytoplankton species were identifying, which belong to 5 divisions; 28% of these species are reported as potentially toxic and/ or noxious. This zone of the bay classifies as politrophic, heterogeneous and dynamics. It highlights the cysts presence, as well as the occurrence of unialgal "blooms" of Gymnodinium catenatum and Cochlodinium polykrikoides, indicating the presence in the ecosystem of favorable conditions to HABs occurrence with negative impact on the...
Tipo: Conference Material
Palavras-chave: Cysts; Eutrophication; Phytoplankton; Algal blooms; Cysts; Eutrophication; Phytoplankton; Algal blooms; Http://aims.fao.org/aos/agrovoc/c_34811; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_32367.
Ano: 2006
URL: http://hdl.handle.net/1834/2251

Distribución de quistes de Alexandrium catenella y otros dinoflagelados en sedimentos de la zona sur-austral de Chile
Provedor de dados: 20
Autores: Lembeye, Georgina.
During the expeditions Cimar - Fiordos 2, 3 and 4 (1996, 1997 and 1999), samples of marine sediments were collected in Southern Chile, between Melinka (Lat. 43° 45' S) and Beagle Channel (Lat. 54° 56' S) to study the distribution and abundance of dinoflagellate cysts, particularly the toxic dinoflagellate Alexandriurn catenella. Samples were collected from 33 stations at depths of 1 to 15 meters. The study included photographic record and taxonomic identification of cysts to genus and, whenever possible, to species, with emphasis on the identification of cysts of A. catenella. Cysts from samples collected in cruises 3 and 4, were incubated in f/2-Se culture medium at 13 °C with controlled photoperiod (14:10, L:D), to induce germination and confirm species...
Tipo: Journal Contribution
Palavras-chave: Sediments; Quantitative distribution; Cysts; Zooplankton; Cysts; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_34811; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2004
URL: http://hdl.handle.net/1834/4126

International study on &lt;i&gt;Artemia&lt;/i&gt; : 17. Energy consumption in cysts and early larval stages of various geographical strains of &lt;i&gt;Artemia&lt;/i&gt;
Provedor de dados: 27
Autores: Vanhaecke, P.; Lavens, P.; Sorgeloos, P.
Variations in dry weight, caloric content and ash content during cyst hatching and early larval development have been studied for various geographical strains of &lt;i&gt;Artemia&lt;/i&gt; . In general, decapsulated cysts contain 30 to 40% more energy than freshly hatched nauplii; for Chaplin Lake and Buenos Aires &lt;i&gt;Artemia&lt;/i&gt; this difference amounts to 57%. Ash contents increase as decapsulated cysts hatch into instar I and molt into instar II-III nauplii. Over a 24h larval developmental period individual dry weights and energy content of the nauplii decrease with 16-34% and 22-37% respectively.A small but significant correlation exists between the survival rate of starved nauplii and either the energy content of instar I and instar II-III...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Energy budget; Larval stages; Artemia.
Ano: 1983
URL: http://www.vliz.be/imisdocs/publications/261926.pdf

Improvements in the decapsulation of &lt;i&gt;Artemia&lt;/i&gt; cysts
Provedor de dados: 27
Autores: Bruggeman, E.; Baeza-Mesa, M.; Bossuyt, E.; Sorgeloos, P.
As described in our previous paper (Sorgeloos et al. , 1977) hypochlorite can be used as reactive agent to dissolve the lipoproteic chorion of &lt;i&gt;Artemia&lt;/i&gt; cysts. Two commercial products are available worldwide, i.e. bleaching powder, chloride of lime Ca(OCL)&lt;sub&gt;2&lt;/sub&gt; and bleaching water NaOCl solutions. In Western Europe the latter product is the cheapest, whereas in the USA and Southeast Asia bleaching powder should be considered. Because the decapsulation process is a much more critical operation with bleaching powder, especially with regard to the viability of the embryos (Bruggeman et al., in preparation; Manzi, personal communication), we studied the use of technical NaOCl solutions in detail.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Artemia.
Ano: 1979
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3623

Availability of reference &lt;i&gt;Artemia&lt;/i&gt; cysts
Provedor de dados: 27
Autores: Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Artemia.
Ano: 1981
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3708

Availability of reference &lt;i&gt;Artemia&lt;/i&gt; cysts
Provedor de dados: 27
Autores: Sorgeloos, P.
Biometrical, biochemical and food-value characteristics of &lt;i&gt;Artemia&lt;/i&gt; nauplii vary with the source of the cyst material. In order to facilitate intercalibration and/or comparison of research conducted with cysts from different sources, homogenous cyst material can now be obtained from the &lt;i&gt;Artemia&lt;/i&gt; Reference Center (State University of Ghent, J. Plateaustraat 22, B-9000 Ghent, Belgium). The reference cysts have been tested extensively for hatching characteristics, biometrics, fatty-acid content, pesticide contamination and effectiveness as larval food for various crustaceans and fishes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Artemia.
Ano: 1980
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3694

Increasing cyst yields in &lt;i&gt;Artemia&lt;/i&gt; culture ponds in Vietnam: the multicycle system
Provedor de dados: 27
Autores: Baert, P.; Anh, N.T.N.; Quynh, V.D.; Hoa, N.V.; Sorgeloos, P.
In this study, one-cycle and multi-cycle culture systems for &lt;i&gt;Artemia&lt;/i&gt; in seasonal salt ponds are compared. In one-cycle systems, &lt;i&gt;Artemia&lt;/i&gt; is inoculated only once per season, while in multi-cycle systems ponds are drained and re-stocked several times per season. In Vietnam, three-cycle systems gave significantly higher cyst yields than did the one-cycle system. However, after two cycles, systems were not significantly different. Food limitation probably caused the steady decline in cyst yields, as observed in the one-cycle ponds. In these ponds, females have smaller broods (from the second cycle onwards) and during the last cycle the number of adult females is lower than in multi-cycle ponds.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Pond culture; Artemia.
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2921

International study on &lt;i&gt;Artemia&lt;/i&gt; : 41. Influence of culture conditions and specific diapause deactivation methods on the hatchability of &lt;i&gt;Artemia&lt;/i&gt; cysts produced in a standard culture system
Provedor de dados: 27
Autores: Lavens, P.; Tackaert, W.; Sorgeloos, P.
Using cyst material produced in an indoor cyst production system from 4 &lt;i&gt;Artemia&lt;/i&gt; strains belonging to the species &lt;i&gt;A. franciscana&lt;/i&gt; (San Francisco Bay, California, USA; Macau, Brazil; Great Salt Lake, Utah, USA) and &lt;i&gt;A. parthenogenetica&lt;/i&gt; (Lavalduc, France), different factors were studied that affect dormancy in brine shrimp cysts. Preliminary experiments under varying (a)biotic culture conditions revealed an interaction between environmental conditions and hatching characteristics. Results obtained under better-defined conditions demonstrated a significant positive correlation between the amount of food available to the adult &lt;i&gt;Artemia&lt;/i&gt; populations and the hatchability of their encysted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Diapause; Food availability; Hatching; Artemia; Artemia franciscana; Artemia parthenogenetica.
Ano: 1986
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3227

International study on &lt;i&gt;Artemia&lt;/i&gt; : 15. Effect of light intensity on hatching rate of &lt;i&gt;Artemia&lt;/i&gt; cysts from different geographical origin
Provedor de dados: 27
Autores: Vanhaecke, P.; Cooreman, A.; Sorgeloos, P.
&lt;i&gt;Artemia cysts&lt;/i&gt; from 4 geographical strains were incubated under standard hatching rates increased with increasing light intensities. The light-intensity threshold at which the maximal hatching rate was attained, varied from strain to strain. Differences in light sensitivity between the &lt;i&gt;Artemia&lt;/i&gt; strains studied can, at least partly, be attributed to variation in chorion characteristics. The hypothesis is discussed that light might act as a diapause inhibitor in marine and freshwater branchiopods.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Hatching; Light intensity; Artemia.
Ano: 1981
URL: http://www.vliz.be/imisdocs/publications/262164.pdf

Improved use of the fluidized bed dryer for &lt;i&gt;Artemia&lt;/i&gt; cysts
Provedor de dados: 27
Autores: Bosteels, T.; Tackaert, W.; Van Stappen, G.; Sorgeloos, P.
A fluidized bed dryer for processing &lt;i&gt;Artemia&lt;/i&gt; cysts at the temperatures above 40°C is described and evaluated. The design is directed towards electronic temperature regulation and optimal design of the drying unit. The described fluidized bed dryer proves to be reliable for cyst processing, using inflow air temperatures up to 90°C. The use of this elevated temperature ensures a higher drying rate, resulting in a drying capacity more than 4 times higher than when using inflow air of 40°C. Electronic temperature regulation resulted in a large flexibility of the temperature regime inside the drying unit.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Artemia.
Ano: 1996
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2919

International study on &lt;i&gt;Artemia&lt;/i&gt;: 3. The use of Coulter Counter&lt;sup&gt;®&lt;/sup&gt; equipment for the biometrical analysis of &lt;i&gt;Artemia&lt;/i&gt; cysts: methodology and mathematics
Provedor de dados: 27
Autores: Vanhaecke, P.; Steyaert, H.; Sorgeloos, P.
Geographical strains of the brine shrimp, &lt;i&gt;Artemia&lt;/i&gt; , can be characterized by the diameter of their cysts, their cyst volume and chorion thickness. The paper describes the routine procedure that has been worked out for an accurate size-analysis of &lt;i&gt;Artemia&lt;/i&gt; cyst batches using Coulter Counter&lt;sup&gt;®&lt;/sup&gt; equipment.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biometrics; Cysts; Methodology; Artemia.
Ano: 1980
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3701

The use of &lt;i&gt;Artemia&lt;/i&gt; cysts in aquaculture: the concept of "hatching efficiency" and description of a new method for cyst processing
Provedor de dados: 27
Autores: Sorgeloos, P.; Persoone, G.; Baeza-Mesa, M.; Bossuyt, E.; Bruggeman, E.
The quality of brands of &lt;i&gt;Artemia&lt;/i&gt; cysts should be expressed on a weight basis, namely the number of live nauplii hatching out per unit of weight of product and not as a "hatching percentage" since the latter concept does not take into account the degree of impurity of the material. A standardized method for the determination of the hatching efficiency is proposed. A new methodology for cyst processing has been worked out at laboratory scale, based on a 2-step cleaning (brine and tap water) followed by dehydration (air or brine) or decapsulation and dehydration (brine).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture techniques; Cysts; Hatching; Artemia.
Ano: 1978
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3615

First report on the triggering effect of light on the hatching mechanism of &lt;i&gt;Artemia salina&lt;/i&gt; dry cysts
Provedor de dados: 27
Autores: Sorgeloos, P.
In the literature, hatching of &lt;i&gt;Artemia salina&lt;/i&gt; L. dry cysts has always been related exclusively to the hydration state of the cysts. Hatching experiments with cysts from different places revealed that light in some way triggers the hatching mechanism.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cysts; Hatching; Light effects; Artemia salina.
Ano: 1973
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3475