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| Registros recuperados: 38 | |
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| Cohen,Débora J; Maldera,Julieta A; Weigel Muñoz,Mariana; Ernesto,Juan I; Vasen,Gustavo; Cuasnicu,Patricia S. |
| Epididymal protein CRISPI is a member of the CRISP (Cysteine-RIch Secretory proteins) family and is involved in sperm-egg fusion through its interaction with complementary sites on the egg surface. Results from our laboratory have shown that this binding ability resides in a 12-amino-acid region corresponding to a highly conserved motif of the CRISP family, named Signature 2 (S2). In addition to this, our results revealed that CRISP1 could also be involved in the previous step of sperm binding to the zona pellucida, identifying a novel role for this protein in fertilization. As another approach to elucidate the participation of CRISP1 in fertilization, a mouse line containing a targeted disruption of CRISP1 was generated. Although CRISP1-deficient mice... |
| Tipo: Journal article |
Palavras-chave: Sperm; Gamete fusion; CRISP; Egg; Fertilization. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200004 |
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| Yan,Yizhong; Li,Jianjun; Zhang,Yiya; Peng,Xiaozhen; Guo,Tianyao; Wang,Jirong; Hu,Weijun; Duan,Zhigui; Wang,Xianchun. |
| BACKGROUND: Black widow spider (L. tredecimguttatus) has toxic components not only in the venomous glands, but also in other parts of the body and its eggs. It is biologically important to investigate the molecular basis of the egg toxicity. RESULTS: In the present work, an aqueous extract was prepared from the eggs of the spider and characterized using multiple physiological and biochemical strategies. Gel electrophoresis and mass spectrometry demonstrated that the eggs are rich in high-molecular-mass proteins and the peptides below 5 kDa. The lyophilized extract of the eggs had a protein content of 34.22% and was shown to have a strong toxicity towards mammals and insects. When applied at a concentration of 0.25 mg/mL, the extract could completely block... |
| Tipo: Journal article |
Palavras-chave: Black widow spider (L. tredecimguttatus); Protein composition; Egg; Molecular mechanism; Property analysis; Toxicity. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100017 |
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| Nazari,Rajab Mohammad; Ghomi,Mohammad Reza; Aquiloni,Laura. |
| This study was aimed to observe the correlations among egg, larvae and maternal characteristics of Persian sturgeon. A total of 41 females were used and the variables including fertilization rate, incubation survival rate, larvae survival rate during yolk sac absorption (before feeding), and larvae survival rate after first feeding were determined. As a result, fertilization rate was positively correlated with three variables: incubation survival, larvae survival during yolk sac absorption, and GSI (gonadosomatic index). Also, maternal size (age, weight, total length) did not show a significant relation (P > 0.05) with incubation survival, larvae survival during yolk sac absorption and larvae survival at first feeding stage. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg; Interrelationship; Larvae; Maternal characteristics; Persian sturgeon. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500012 |
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| Cerqueira,Vinicius Ronzani. |
| Eggs of the Southern Brazilian flounder Paralichthys orbignyanus were obtained through spawning induction and reared in laboratory. The eggs released were free-floating or pelagic. Other important characteristics were: spherical shape, smooth chorion, narrow perivitelline space, and a single oil globule. Egg and oil globule diameter were about 0.792 ± 0.008 mm and 0.114 ± 0.003 mm, respectively. The blastodisc was observed approximately 1 h after fertilization and followed by blastodisc cleavage. Blastula stage started after about 5 h and gastrula stage after 9 h. Approximately 20 h after fertilization, blastopore closure was observed. Neurula or early embryo occurred after 24 h. Cardiac beats and movements of the free embryonic tail were recorded after 40... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flounder; Paralichthys orbignyanus; Egg; Embryo; Development. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300016 |
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| Spada,Fernanda Papa; Gutierrez,Érika Maria Roel; Souza,Miriam Coelho de; Brazaca,Solange Guidolin Canniatti; Lemes,Dayane Elizabeth Aoqui; Fischer,Flávia Salgado; Coelho,Antonio Augusto Domingos; Savino,Vicente José Maria. |
| Yolk color and egg white (albumen) cleanliness and viscosity are important parameters by which consumers judge the quality of eggs. This study aimed to investigate changes in albumen viscosity during storage of eggs for up to 36 days from two different commercial laying hen strains (Carijo Barbada and Isa Brown) fed a diet containing annatto (1.5 and 2.0%) or a synthetic additive without synthetic colorants (control). Analyses of humidity, albumen height, pH, viscosity, foam formation, and stability were carried out on eggs. Carijo Barbada strain had smaller albumen, lower humidity and higher egg white viscosity than Isa Brown strain; however, with storage, viscosity lowered significantly on both strains. Initially, the addition of 2.0% of annatto or a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Strain; Egg; Foam formation; Foam stability; PH; Albumen height. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100007 |
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| Scussel,V. M.. |
| Milk and egg matrixes were assayed for aflatoxin M1 (AFM1) and B1 (AFB1) respectively, by AOAC official and modified methods with detection and quantification by thin layer chromatography (TLC) and high performance thin layer chromatography (HPTLC). The modified methods: Blanc followed by Romer, showed to be most appropriate for AFM1 analysis in milk. Both methods reduced emulsion formation, produced cleaner extracts, no streaking spots, precision and accuracy improved, especially when quantification was performed by HPTLC. The use of ternary mixture in the Blanc Method was advantageous as the solvent could extract AFM1 directly from the first stage (extraction), leaving other compounds in the binary mixture layer, avoiding emulsion formation, thus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxin; AFM1; AFB1; TLC; HPTLC; Milk; Egg. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612003000400009 |
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| Pereira,Anielli Souza; Santos,Taisa Tavares dos; Coelho,Ana Flávia Santos. |
| The objective of this study was to investigate the influence of storage conditions on the physicochemical (mass, albumen height, pH, and Haugh unit) and microbiological (Salmonella spp., determination of the Total and Thermotolerant Coliforms, and Counting of the Mesophilic Aerobic Bacteria) quality of eggs. In the first experiment, a questionnaire was applied, and 33 samples of eggs were collected for the Salmonella spp analysis. In the second experiment, the eggs were collected from supermarkets, open markets, and distributors for physicochemical analysis. In the third experiment, 175 eggs were collected from the distributor, packaged in cardboard boxes lined with plastic wrapping, stored at 5 °C and 28 °C, and the physicochemical and microbiological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbiological quality; Egg; Samonella spp.; Haugh unit. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000100012 |
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| Guillén Alvarado, Rosa Angélica. |
| En este trabajo consiste en realizar una predicción de precios del huevo en México con datos de 1960 a 2003 y posteriormente se obtuvo la predicción de precios hasta el 2007, mismo que se tomas los precios nominales del huevo y el índice nacional de precios al consumidor para calcular los precios reales y obtener la desestacionalización de los precios, posteriormente con el apoyo del programa de SAS, se establece un modelo econométrico con el que se calcula la tendencia de mejor ajuste. El modelo cuadrático tiene un buen ajuste dado por el coeficiente de determinación (R2 =0.9432) y sus parámetros de acuerdo con la razón de t son significativos al 99% de probabilidad. Tomando en consideración la tendencia estimada, el índice estacional, el índice cíclico... |
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Palavras-chave: Ciclos; Huevo; Tendencia; Predicción de precios; Cycles; Egg; Trends; Price forecast; Economía; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1706 |
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| Maurício,Giovanni N.; Bencke,Glayson Ariel; Repenning,Márcio; Machado,Diogenes Borges; Dias,Rafael A.; Bugoni,Leandro. |
| Information on the breeding biology of birds is essential for improving avian life-history theory and implementing sound management and conservation actions for these organisms. Comprehensive reviews of this kind of information are lacking for most Neotropical regions, including Rio Grande do Sul, the southernmost Brazilian state. Aiming to update the knowledge on the reproductive status of birds in Rio Grande do Sul, we reviewed breeding records of all potential breeding species recorded in the state using a set of predefined, restrictive criteria for accepting breeding evidences as effective. Data satisfying our criteria were available for 165 species in the literature. We also collected novel breeding information obtained in the state for an additional... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nest; Egg; Nestling; Breeding biology; Breeding records. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200012 |
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| Breuil, Gilles. |
| The sea bass, Dicentrarchus labrax, has been subjected to intensive aquaculture on the Mediterranean cost for ten years. Marine fish hatcheries are key factors in the aquaculture field, and face different pathologies, especially one of viral origin (nodavirus) that could challenge their feasibility. Consequently, we have tried to provide some data on larvae and spawning stocks. Firstly, we have studied the immunoglobulins, components of the specific humoral immunity, and their role as antibodies. On adult basses, these immunoglobulins are tetrameric molecules with high molecular weight (850 kD), made of heavy (H) - 80 kD and light (L) - 26 kD chains. In the eggs, simplest forms such as monomeric or dimeric are brought to the fore; they are located under... |
| Tipo: Text |
Palavras-chave: Egg; Cytometry; Immunity system; Larvae; Immunoglobulin; Nodavirus; Dicentrarchus labrax; Hatchery; Ontogenese; Cytometrie; Immunoglobuline; Nodavirus; Oeuf; Larve; Nurserie; Dicentrarchus labrax. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/these-1265.pdf |
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| Khmeleva, N; Goloubev, A. |
| This monograph is the first to state by a systematic research the rules which control the production of the organic losses in shape of eggs and exoskeletons during the life of Crustacea. The weight and the energy content of the material thrown out are the chief criteria selected to characterize the germinal production, relative to the egg-mass, and the exuvial production, relative to the organic fraction of the exoskeleton. The determination of these parameters, at the level of the organism or of the population, takes into account the systematic position of the animals, the duration of their intermolt periods, fecundity and other indices in relation to environmental factors. The loss of matter and energy with reproduction and molting(studied for different... |
| Tipo: Text |
Palavras-chave: Energy content; Weight; Organic losses; Egg; Ecosystem; Crustacea. |
| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/1986/rapport-1665.pdf |
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| Lemos,Luciana da Silva; Santos,Alessa Siqueira de Oliveira dos; Rodrigues,Ana Bárbara Freitas; Goulart,Maria Laudelina Vieira Seródio; Almeida,Luciano Grillo de; Silveira,Leonardo Serafim da. |
| A dog with multiple infection by D. renale in the abdominal cavity presented granular peritonitis with giant cells phagocytizing D. renale eggs. Hepatic and phrenic serositis associated to numerous eggs of the parasite immersed in fibrinous process were observed. Lungs presented D. renale eggs in the parenchyma, mononucleated cell infiltrates, edema, hemorrhage, congestion, atelectasia, emphysema, and thromboembolism. D. renale eggs were detected inside the center-lobular veins, auricular cavities, and superficial venous bed of the heart. These findings characterized an atypical dissemination pathway of eggs in erratic cycle. |
| Tipo: Journal article |
Palavras-chave: Egg; Dioctophyma renale; Erratic cycle; Extrarenal parasitism; Canine. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400008 |
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| Pietrykowska-Tudruj, E.; Staniec, B.; Wojas, T.; Alexey, A.. |
| For the first time eggs, larvae and pupae obtained by rearing are described for Astrapaeus, a monotypic West Palearctic rove beetle genus of a puzzling phylogenetic position within the megadiverse tribe Staphylinini. Morphology of the immature stages of Astrapaeus ulmi is compared to that of other members of the tribe and discussed in a phylogenetic context. Contrary to conventional systematics and in accordance with recently developed phylogenetic hypotheses based on morphology of adults, larval morphology supports the non-Quediina affiliation of Astrapaeus. Eggs and pupae provided fewer characters with putative phylogenetic signal. Under laboratory conditions, a peculiar preference for isopod prey was observed for A. ulmi. However, this could not be... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Egg; Feeding preference; Larva; Life cycle; Morphology; Phylogeny; Pupa; 42.75; 42.64. |
| Ano: 2014 |
URL: http://www.repository.naturalis.nl/record/472282 |
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| Registros recuperados: 38 | |
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