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Registros recuperados: 77
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A new vision of the origin and the oocyte development in the Ostariophysi applied to Gymnotus sylvius (Teleostei: Gymnotiformes) Neotropical Ichthyology
França,Gisleine Fernanda; Grier,Harry J.; Quagio-Grassiotto,Irani.
Based on new knowledge coming from marine perciform species, the origin of oocytes and their development in the Ostariophysi, Gymnotus sylvius is described. In both Gymnotus sylvius and marine perciform fish, oogonia are found in the germinal epithelium that forms the surface of the ovarian lamellae. At the commencement of folliculogenesis, proliferation of oogonia and their entrance into meiosis gives rise to germ cell nests that extend into the stroma from the germinal epithelium. Both cell nests and the germinal epithelium are supported by the same basement membrane that separates them from the stroma. At the time of meiotic arrest, oocytes in a cell nest become separated one from the other as processes of prefollicle cells, these being derived from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Folliculogenesis; Primary growth; Secondary growth; Maturation; Ovulation.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400008
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Addition of melatonin to the maturation medium of bovine oocytes subjected to heat shock: effects on nuclear maturation, apoptosis, reactive oxygen species, mitochondrial activity, and gene expression. Repositório Alice
ALVES, N. G.; PAULA, F. A. P.; CAMPOS, J. P. A.; SILVA, D. R.; LIMA, R. R.; SOUZA, E. D.; QUINTAO, C. C. R.; SOUZA, J. F.; ASCARI, I. J.; CAMARGO, L. S. de A..
Tipo: Anais e Proceedings de eventos Palavras-chave: IVM medium; Maturation; Production.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113109
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Alteraciones fisicas, fisico-quimicas e quimicas durante el desarrollo e maduracion de frutos de la anon (Annona squamosa L.). Repositório Alice
MOSCA, J. L; ASSIS, J. S. de; ALVES, R. E.; FILGUEIRAS, H. A. C.; BATISTA, A. F..
El Brasil viene presentando um aumento significativo en la produccion de frutas, debido sus caracteristicas edafoclimaticas favorables, notadamente, en los polos irrigados. Este cuadro viene generando ampleos y renta para millones de personas, bien como conquistando nuevos espacios en el competitivo mercado internacional de frutos in natura. Entre las annonaceas cultivadas con interes comercial, la anon, (A.squamosa L.), tambien llamada de pinha o fruta del conde es uno de los principales representantes de la familia. Con el objetivo de estudiar el desarrollo y maduracion de los frutos de anon, asi como obtener subsidios para la determinacion del punto de cosecha, fue instalado el experimiento utilizando-se 792 plantas de un pomar comercial irrigado,...
Tipo: Separatas Palavras-chave: Pinha; Growth; Maturation; Harvest; Annona Squamosa; Colheita; Crescimento; Fruta; Fruta do Conde; Maturação; Fruits.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/132665
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Aspectos tecnológicos de sorgo-sacarino submetido à aplicação de maturadores químicos. Repositório Alice
VIANA, R. da S.; MAY, A.; MATEUS, G. P.; RODRIGUES NETO, A. D.; LOPES, P. R. M..
Resumo:O sorgo-sacarino apresentou um crescimento de interesse para cultivo em área de reformas de canaviais associadas a usinas sucroenergéticas em função da possibilidade de produção de etanol, na abertura da safra da cana-de-açúcar, sendo seu ponto de colheita normalmente identificado pela fenologia da planta, após o florescimento da cultura. A antecipação do momento de colheita e a possibilidade de acúmulo de açúcares no colmo, com a utilização de maturadores químicos, podem ser uma alternativa importante para a cultura, como ocorre com a cana-de-açúcar. Este trabalho teve como objetivo avaliar os aspectos tecnoló­gicos do sorgo-sacarino quando aplicados diferentes maturadores químicos. O delineamento experimental utilizado foi o em blocos...
Tipo: Separatas Palavras-chave: Estresse; Reguladores vegetais; Maturation; Plant growth regulators; Sorgo sacarino.; Regulador de crescimento; Maturação; Stress.; Sorghum Bicolor; Plant growth substances..
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081735
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Características físicas da fibra e do fio dos algodoeiros arbóreo e herbáceo em melhoramento no Nordeste do Brasil. Infoteca-e
SANTANA, J. C. F. de; FREIRE, E. C.; CARVALHO, L. P.; COSTA, J. N. da; GUSMAO, J. L. de; SILVA, J. A. da.
bitstream/item/33284/1/CARACTERISTICAS-FISICAS-DA-FIBRA.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Caracteristicas fisicas; Fio; Cultivar; Finura; Tenacidade; Alongamento; Arboreo; Herbaceo; Brasil; Nordeste; Pernambuco; Caruaru; Paraiba; Itaporanga; Patos; Riacho dos Cavalos; Ceara; Iguatu; Piaui; Eliseu Martins; Annual; Perennial; Upland; Physical; Properties; Yarm; Fiber; Strength; Maturation; Breaking; Elongation; Rupture.; Algodão; Comprimento; Fibra; Gossypium Hirsutum; Melhoramento; Mocó; Maturidade; Resistência; Surubim.; Sousa; Fineness; Cotton; Breeding; Length..
Ano: 1989 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262827
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Characterization and development of marolo (Annona crassiflora, Mart.) Ciênc. Tecnol. Aliment.
Silva,Edson Pablo da; Vilas Boas,Eduardo Valerio de Barros; Xisto,Andreia Luiza Pereira Ramos.
The objectives of this study was the physical, chemical, and physiological characterization of marolo (Annona crassiflora, Mart.) during its development. The fruits were harvested 12 Km off Itumirim, Southern Minas Gerais, Brazil, at 20-d intervals from anthesis to fruit maturity. The first fruits were harvested within 60 days. The total development of the fruit took 140 days starting from anthesis. At 140 days after anthesis, the fruit reached its maximum size, with mass of 1.380g, transverse diameter of 13.0 cm, and longitudinal diameter of 11.5 cm. During its development, the fruit showed increase in mass and in traverse and longitudinal diameters. The changes during maturation and ripening, such as: pH reduction and starch degradation, pectic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Growth; Maturation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000400011
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Characterization of the phenolic ripening development of "BRS Vitoria" seedless table grapes using HPLC-DAD-ESI-MS/MS. Repositório Alice
COLOMBO, R. C.; ROBERTO, S. R.; CRUZ, M. A. da; CARVALHO, D. U. de; YAMAMOTO, L. Y.; NIXDORF, S. L.; PEREZ-NAVARRO, J.; GÓMEZ-ALONSO, S.; SHAHAB, M.; AHMED, S.; GONÇALVES, L. S. A.; SOUZA, R. T. de; HERMOSÍN-GUTIÉRREZ, I..
Determining the harvest date of table grapes is very important to achieve high-quality bunches with adequate soluble solids content, low titratable acidity, and high concentrations of polyphenols. Table grape consumption has increased worldwide due to its phenolic compound content and its beneficial effects on human health. Thus, this study aimed to characterize the phenolic ripening of ?BRS Vitoria? seedless table grapes at different ripening stages using HPLC?DAD?ESI-MS/MS. For this purpose, a trial was carried out during 2016 in a commercial vineyard of ?BRS Vitoria? seedless grape located in Marialva, state of Parana (Southern Brazil). Berry samples were assessed weekly, starting at v ́eraison until full ripeness. At each ripening stage, the...
Tipo: Artigo de periódico Palavras-chave: Hybrid grapes; Polyphenolic profile; Anthocyanin; Maturation; Flavonoids; Harvest date.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1128232
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Chlorophyll fluorescence of the testa of Brassica oleracea seeds as an indicator of seed maturity and seed quality Scientia Agricola
Jalink,H.; Frandas,A.; Schoor,R. van der; Bino,J.B..
Chlorophyll fluorescence of the testa of seeds is proposed as a non-invasive method for the determination of maturity and quality of seeds. In this study cabbage seeds (Brassica oleracea) were sorted individually based on the chlorophyll fluorescence signals into four subsamples labeled with respect to their chlorophyll fluorescence signal (low, medium, high and very high). The results show that the magnitude of the chlorophyll fluorescence signal was inversely related to the quality of the seeds, expressed as germination %, normal seedling %, germination rate (T50) and uniformity of germination (T75-T25). The seed lot could be improved from 90 to 97% normal seedlings by sorting out 13% of the seeds with very high chlorophyll fluorescence signals....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Maturation; Chlorophyll fluorescence; Cabbage seed; Sorting; Quality.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500016
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CLASSIFICATION OF MACAW PALM FRUITS FROM COLORIMETRIC PROPERTIES FOR DETERMINING THE HARVEST MOMENT REA
Costa,Anderson G.; Pinto,Francisco de A. de C.; Motoike,Sérgio Y.; Braga Júnior,Roberto A.; Gracia,Luis M. Navas.
ABSTRACT Macaw palm (Acrocomia aculeata) is a promising crop for biofuel production due to the high concentration of its fruit oil, but the harvest date is an issue to be better understood so it could be cultivated on an industrial scale. The aim of this study was to use the colorimetric properties of the macaw palm fruits to develop a neural network classifier to determine the ideal moment for harvesting, based on the oil content of the fruit mesocarp. During nine weeks of maturation were sampled 900 fruits of macaw palm fruits and the colorimetric properties of the RGB, HSI and CIELab color models were used to classify the fruits into immature and mature fruits. Kappa index and the overall accuracy values were used to access the classifier performance....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digital images; Maturation; Neural networks; Oil content.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400634
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Composition and microbiological analysis for quality evaluation of Kars Gravyer cheese: influence of ripening period Ciênc. Tecnol. Aliment.
ÇETİNKAYA,Asya; ÖZ,Fatih.
Abstract In this study; The objective is to demonstrate the total quality of the chemical and microbiological aspects of the Kars Gravyer cheese during the ripening period, produced by means of traditional method in dairy conditions. Production of Kars Gravyer cheese was performed in two replications. Titratable acidity (%l.a), salt content, total protein ratio, dry matter, fat content, dry matter in fat and dry matter in salt, total nitrogen and lipolysis rate content were determined by taking samples from the produced cheeses on specific days (day 0, 10, 25, 45, 60 and 90) and microbiological analyses were performed. By analysis the results of the Kars Gravyer cheese samples; significant changes in acidity, dry matter, salt, total nitrogen, protein, fat...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gravyer cheese; Maturation; Quality; Food analysis; Food composition.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000401052
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Contrasting effects of heat shock during in vitro maturation on development of in vitro-fertilized and parthenogenetic bovine embryos. Repositório Alice
CAMARGO, L. S. A.; COSTA, F. Q.; MUNK, M.; WOHLRES-VIANA, S.; SERAPIÃO, R. V.; CARVALHO, B. C.; CAMPOS JÚNIOR, P. H.; VIEIRA, A. C.; NOGUEIRA, L. A. G.; VIANA, J. H. M..
Tipo: Artigo de periódico Palavras-chave: Activation; Embryos; Maturation; Aquaporin 3; Hsp70 Protein; Ionomycin; Heat Shock; Cleavage; Blastocyst; In vitro fertilization; Parthenogenesis; Apoptosis; Gene expression; Gametocytes; Oocytes.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113387
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Contrasting effects of heat shock during in vitro maturation on development of in vitro-fertilized and parthenogenetic bovine embryos. Repositório Alice
CAMARGO, L. S. A.; COSTA, F. Q.; MUNK, M.; WOHLRES-VIANA, S.; SERAPIÃO, R. V.; CARVALHO, B. C.; CAMPOS JÚNIOR, P. H.; VIEIRA, A. C.; NOGUEIRA, L. A. G.; VIANA, J. H. M..
Abstract This study investigated the influence of heat shock during in vitro maturation on embryo development following in vitro fertilization (IVF) or parthenogenesis (Part). Immature bovine cumulus?oocyte complexes were exposed to heat shock (41.0°C) during the first 12 hr of in vitro maturation (IVM), followed by 12 hr at 38.5°C. Control group consisted of in vitro maturation for 24 hr at 38.5°C. Oocytes were in vitro&#8208;fertilized or activated with ionomycin and cultured in vitro for 192 hr post&#8208;in vitro insemination or parthenogenetic activation (hpia). There was an interaction (p < .01) between temperature of IVM and method of oocyte activation (IVF or Part) for cleav&#8208;age at 48 hpia. Heat shock had a negative impact (p...
Tipo: Artigo de periódico Palavras-chave: Activation; Embryos; Maturation; Aquaporin 3; Hsp70 Protein; Ionomycin; Heat Shock; Cleavage; Blastocyst; In vitro fertilization; Parthenogenesis; Apoptosis; Gene expression; Gametocytes; Oocytes.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118469
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Croissance, engraissement et cycle sexuel de Crassostrea gigas dans le Bassin d'Arachon: comparaison des huîtres agées de 1 et 2 ans ArchiMer
Maurer, Daniele; Borel, Michel.
Two-year-old oysters have a physiology which is reproduction-oriented, their maturation occurring synchronously among oysters from the same batch. The importance of the spring accumulation of glycogenated stocks varies through the years and correlates with the growth stage. Glucidic components are quickly used during the month preceding egg-laying and are transformed into lipid stocks for the oocytes. One-year-old oysters develop at different rates, some of them not showing any sign of maturation and the percentage of laying individuals varies through the years. Glycogenated stocks accumulate in a similar way in both age-classes and their more precocious and more intense use by young molluscs is not necessarily linked with their gametogenesis and growth,...
Tipo: Text Palavras-chave: Bay of Arcachon; Maturation; Biochemistry; Crassostrea gigas; Bassin d'Arcachon; Maturation; Biochimie; Crassostrea gigas.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-6182.PDF
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Defining the reproductive period of freshwater fish species using the Gonadosomatic Index: a proposed protocol applied to ten species of the Patos Lagoon basin Neotropical Ichthyology
Fontoura,Nelson Ferreira; Ceni,Gianfranco; Braun,Aloisio Sirangelo; Marques,Camilla da Silva.
ABSTRACT This contribution records the reproductive periods of ten dominant freshwater fish species from the Patos Lagoon and Guaíba Lake (Astyanax fasciatus, Cyphocharax voga, Hoplias malabaricus, Oligosarcus jenynsii, Oligosarcus robustus, Hoplosternum littorale, Loricariichthys anus, Parapimelodus nigribarbis, Trachelyopterus lucenai, Pachyurus bonariensis). Data were derived from monthly samples in Casamento Lake (northern Patos Lagoon; Nov. 2002 to Apr. 2004) and Guaíba Lake (Jun. 2005 to May 2006). The reproductive period was determined according to the monthly variation of the gonadosomatic index (GSI). Fish reproduction was identified during all months of the year. Oligosarcus jenynsii started reproduction in winter, but extended spawning to spring...
Tipo: Info:eu-repo/semantics/article Palavras-chave: GSI; Maturation; Maturity Criteria; Reproductive Cycle.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000200210
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Desenvolvimento do fruto do imbuzeiro (Spondias tuberosa, Arr.Cam.) da fecundação à maturação. Repositório Alice
CAVALCANTI, N. de B.; LIMA, J. L. S. de; RESENDE, G. M. de; BRITO, L. T. de L..
Tipo: Parte de livro Palavras-chave: Desenvolvimento; Nordeste; Região semi-árida; Development; Maturation; Northeast; Semi-arid region; Planta da Caatinga; Fruta; Maturação; Spondias Tuberosa; Umbu; Fruits; Spondias.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/131723
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Design of waste stabilization ponds for dairy processing plants in Uganda CIGR Journal
Menya, Emmanuel; Wangi, G. M.; Amanyire, F.; Ebangu, B..
Waste stabilization ponds (WSP) were designed to treat 287.5 m3 day-1 of wastewater generated from processing of 100 m3 of milk per day.  The design involved use of existing models including those developed by Mara to size the anaerobic, facultative and maturation ponds.  The design temperature was 250C.  The anaerobic pond was designed based on volumetric organic loading rate while facultative pond was designed based on surface loading rate.  On the other hand, the maturation pond was designed based on the number of coliform bacteria removed per 100 mL of wastewater.  The anaerobic pond was designed to remove 70% BOD, facultative pond-75% and maturation pond-25% BOD.  In addition, the maturation pond was designed to have a coliform bacteria removal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dairy; Waste stabilization ponds; Anaerobic; Facultative; Maturation; Uganda.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2388
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Determinism of Temporal Variability in Size at Maturation of Sardine Sardina pilchardus in the Bay of Biscay ArchiMer
Véron, Matthieu; Duhamel, Erwan; Bertignac, Michel; Pawlowski, Lionel; Huret, Martin; Baulier, Loic.
Age and size at maturation appear as key parameters governing the dynamics of a population as they affect growth rate, fecundity, and survival. The expression of such life history traits is determined by genetic make-up and modulated by environmental factors mainly through phenotypic plasticity. Moreover, fishing, besides decreasing population size and changing demographic composition can alter allelic frequencies through fisheries-induced evolution by selecting for some particular traits. In the Bay of Biscay, a decreasing trend in both sardine body condition and size-at-age has recently been pointed out at the population level. The Probabilistic Maturation Reaction Norm (PMRN) approach was applied to help disentangle phenotypic plasticity and genetic...
Tipo: Text Palavras-chave: Fisheries-induced evolution; Body condition; Phenotypic plasticity; Maturation; Growth; Sardina pilchardus; Bay of biscay.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00660/77203/78637.pdf
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Dinâmica da reprodução do cascudo, Rineloricaria latirostris Boulenger (Siluriformes, Loricariidae) do rio Passa Cinco, Ipeúna, São Paulo Zoologia
Barbieri,Geraldo.
Aspects of reproduction of Rineloricaria latirostris Boulenger, 1899 of Passa Cinco river (Ipeúna, São Paulo) were investigated during 18 months. The spawing period was determined by the analysis of the maturation curve, based of the monthly variation of the gonadosomatic index and condition factor. The size and age on the maturation and fecundity were also determined. The fecundity was realted to some parameters such as total length and total weight.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproduction; Dynamics; Maturation; Fecundity.
Ano: 1994 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400003
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Ecophysiologie de la maturation sexuelle et de la ponte de l'huître creuse Crassostrea gigas : réponses métaboliques (respiration) et alimentaires (filtration, absorption) en fonction des différents stades de maturation ArchiMer
Soletchnik, Patrick; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe.
The study of sexual maturation and spawning in the Pacific oyster (Crassostrea gigas) is part of a vast research programme that endeavours to understand the causes of mortality that occur sporadically during the spring and summer seasons in the Marennes-Oléron Bay. Thermal and diet conditioning were used to obtain oysters at each stage of maturity simultaneously. Using the measured rates of clearance, consumption, absorption and respiration provided estimates of growth potential and gave the energetic budget of oysters at different stages of sexual maturity. Physiological responses were similar for males and females. Filtration decreased from 2.4 to 2.6 l.h (-1) to 1.8 l.h (-1) with increasing maturity. Weight gain was associated with gonad development and...
Tipo: Text Palavras-chave: Ponte; Maturation; Crassostrea gigas; Ecophysiologie.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/acte-3251.pdf
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Ecophysiologie de la maturation sexuelle et de la ponte de l'huître creuse Crassostrea gigas : réponses métaboliques (respiration) et alimentaires (filtration, absorption) en fonction des différents stades de maturation ArchiMer
Soletchnik, Patrick; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe.
The study of maturation and spawning of the oyster is part of a research program to investigate the summer mortalities of the oysters, Crassostrea gigas in Marennes-Oléron Bay. Four maturity stages were simultaneously obtained by diet and thermal conditioning (immature, low maturation, mature and post-spawning stages). Measurements of clearance, filtration, absorption and respiration rates allowed a calculation of the scope for growth and hence an estimation of the oyster's energetic budget at various maturity stages. Male and female oysters had similar physiological responses. The filtration rate ranged from 2.4 to 2.6 1.h(-1) at the early stages of maturation and decreased to 1.8 1.h.' during the maturity stage. Growth rate resulting from gonad...
Tipo: Text Palavras-chave: Huître; Crassostrea gigas; Conditionnement; Maturation; Filtration; Absorption; Respiration; Oyster; Crassostrea gigas; Conditioning; Maturation; Filtration; Absorption and respiration rates.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/publication-3090.pdf
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