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Registros recuperados: 22
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A macroscopic classification of the embryonic development of the one-sided livebearer Jenynsia multidentata (Teleostei: Anablepidae) Neotropical Ichthyology
López-Rodríguez,Nathalia C.; Barros,Cíntia M. de; Petry,Ana Cristina.
ABSTRACT This study proposes eight stages according to the main discernible changes recorded throughout the embryonic development of Jenynsia multidentata. The development of morphological embryo structures, pigmentation, and changes in tissues connecting mother and embryo were included in the stage characterization. From the fertilized egg (Stage 1), an embryo reaches the intermediary stages when presenting yolk syncytial layer (Stage 2), initial pigmentation of the outer layers of the retina and dorsal region of the head (Stage 3), and the sprouting of the caudal (Stage 4), dorsal and anal fins (Stage 5). During the later stages, the ovarian folds enter the gills, and the body pigmentation becomes more intense (Stage 6), the body becomes elongated (Stage...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Developmental stages; Dry weight; Matrotrophy; Morphology; Viviparity.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000400206
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A method for germinating perennial Cicer species Open Agri
Coyne, C.J.
Palavras-chave: Polysaccharides; Chickpeas; Grafting; Pigeonpeas; Germplasm; Relative humidity; Transplanting; Regeneration; Tillage equipment; Developmental stages.
Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3229
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A study of pigments in some developmental stages of <i>Aurelia aurita</i> Lam OMA
Van den Branden, C.; Van den Sande, P.; Decleir, W..
Unfed polyps of <i>Aurelia aurita</i> are white. Fed with <i><i>Artemia</i> salina</i> nauplii they turn to pinkish because of the canthaxanthin present in the food. The deep brown-red colour of strobila and ephyra is due to melanin.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Developmental stages; Pigments; Polyps; Aurelia aurita.
Ano: 1980 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3702
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Comparative demography of the exotic Harmonia axyridis with other aphidophagous coccinellids reared on artificial diet PAB
Milléo,Julianne; Fernandes,Francisco Sales; Godoy,Wesley Augusto Conde.
The objective of this work was to compare biological aspects and life table parameters of the coccinellids Harmonia axyridis, Cycloneda sanguineaand Hippodamia convergens. Insects were fed eggs of Anagasta kuehniella, and reared at 24.5±1ºC, 70±10% relative humidity, with a 12 hour photophase. Hippodamia convergenstook about 1.6 day to complete development, longer than H. axyridis, and 2.4 day longer than C. sanguinea.At immature stages, H. axyridisexhibited the highest survival percentage (49.2%), in comparison to the other coccinellids. For mean adult longevity, H. convergenswas deficient, in comparison with the other species. Mean period of pre oviposition was the longest in C. sanguinea; the longest oviposition time occurred for H. axyridis; and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cycloneda sanguinea; Hippodamia convergens; Biological control; Developmental stages; Invasive species; Life table.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000100002
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Descripción macroscópica de los ovarios del abadejo manchado (Genypterus blacodes). Escala de maduración OceanDocs
Machinandiarena, L.; Villarino, M.F.; Cordo, H.D.; Macchi, G.J.; Pájaro, M..
The macroscopic ovaric stages of pink cuskeel (Genypterus blacodes) females from the Argentine Sea (SW Atlantic) are described. They were classified in five stages of development based on changes in the appearance and size of the ovary: juvenile (I), developing (II), spawning (III), spent (IV) and resting (V).
Tipo: Journal Contribution Palavras-chave: Fecundity; Ovaries; Developmental stages; Ultrastructure; Sexual maturity; Ovaries; Developmental stages; Ultrastructure; Fecundity; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_2230; Http://aims.fao.org/aos/agrovoc/c_8045; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2003 URL: http://hdl.handle.net/1834/2421
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Distribuição espacial de Euschistus heros em soja no estádio R5.4. Repositório Alice
SCARPARO, T. P.; OLIVEIRA, M. C. N. de; ROGGIA, S..
Tipo: Parte de livro Palavras-chave: Soja; Euschistus Heros; Etapa de Desenvolvimento da Planta; Praga de Planta; Soybeans; Plant pests; Developmental stages; Plant development.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1096996
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Diurnal variation of methane emission from a paddy field in Brazilian Southeast. Repositório Alice
LIMA, M. A. de; PAZIANOTTO, R. A. A.; VILLELA, O. V.; PARAIBA, L. C..
Abstract: This study aimed to investigate the diurnal variation of methane (CH4) emission in a flooded-irrigated rice field at different stages of the plant development under tropical climate in three growing seasons, in order to determine the most appropriate time for gas sampling in the Brazilian Southeast region. It aimed also to verify correlations between CH4 flux and air, water and soil temperatures, and solar radiation. The CH4 emissions were measured every 3-hour interval on specific days in different development stages of the flooded rice in the Experiment Station of the Agência Paulista de Tecnologia dos Agronegócios (APTA), Pólo Regional Vale do Paraíba, at Pindamonhangaba, State of São Paulo (22°55? S, 45°30? W), Brazil. Different CH4 emission...
Tipo: Separatas Palavras-chave: Flooded rice; Methane flux; Arroz irrigado por inundação; Fluxo de metano; Estágio de desenvolvimento da planta; Energia de ativação; Arroz Inundado; Metano; Temperatura do Solo; Rice; Greenhouse gas emissions; Methane; Developmental stages; Plant development; Activation energy.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1093715
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Efeito da alimentação da Schizaphis graminum com genótipos de sorgo no desenvolvimento do predador Cycloneda sanguinea. Repositório Alice
SANTOS, T. M. dos; FIGUEIRA, L. K.; BOICA JUNIOR, A. L.; LARA, F. M.; CRUZ, I..
O pulgão Schizaphis graminum (Rondani) (Hemiptera: Aphididae) é uma das principais pragas do sorgo. O objetivo deste trabalho foi determinar o efeito da alimentação deste inseto com genótipos de sorgo resistentes e suscetíveis no desenvolvimento do predador Cycloneda sanguinea (Linnaeus) (Coleoptera: Coccinellidae). O pulgão foi criado em folhas dos genótipos de sorgo GR 11111 e TX 430 x GR 111, resistentes, GB 3B, de resistência moderada e BR 007B, suscetível ao hemíptero. As larvas de C. sanguinea foram alimentadas diariamente, ad libitum, com ninfas e adultos de S. graminum. A duração das fases de desenvolvimento e a sobrevivência de C. sanguinea não foram influenciadas pelo genótipo. Apenas a duração do quarto ínstar, da fase larval e do período de...
Tipo: Artigo de periódico Palavras-chave: Etapa de desenvolvimento.; Controle Biológico; Larva; Planta Hospedeira.; Developmental stages; Biological control; Host plants; Larvae; Pest resistance..
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/487129
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Effets de l'ablation des pedoncules oculaires, au cours des stades Zoe 3 et Zoe 4 sur la mue de la metamorphose de Palaemonetes varians (Leach) (Crustacea, Decapoda) ArchiMer
Leroux, Aurelien.
The presence of two (or at least one) eyestalks is required for inducing a complete, monoecdysial metamorphosis in Palaemonetes varians . This induction is performed, at 20 degree C, in about 20 hours situated on either side of the third larval moult when metamorphosis occurs at the fourth one. The mechanism of induction is discussed.
Tipo: Text Palavras-chave: Palaemonetes varians; Malacostraca; Morphogenesis; Developmental stages; Moulting.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1384.pdf
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Embryonic development of four species of palaemonid prawns (Crustacea, Decapoda): pre-naupliar, naupliar and post-naupliar periods Zoologia
Müller,Yara; Ammar,Dib; Nazari,Evelise.
The embryonic development of four species of the family Palaemonidae was studied under laboratory conditions. Adults of Macrobrachium olfersi (Wiegman, 1836), Macrobrachium potiuna (Müller, 1880), Palaemon pandaliformis (Stimpson, 1871) and Palaemonetes argentinus (Nobili, 1901) were collected in Santa Catarina Island, Santa Catarina, Brazil and maintained at 26ºC. The following embryonic characters were analyzed: egg shape, yolk organization and cleavage plane, naupliar and post-naupliar appendages, stomodeum, optical lobes, eyes, telson, embryo curvature and the space occupied by the embryo in the egg. Different rates of development were observed for the four species, with M. potiuna showing the longest time of embryogenesis. The species studied followed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Centrolecithal eggs; Developmental stages; Embryonic morphological features; Macrobrachium.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100005
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Ensiled <i>Artemia</i> biomass: a promising and practical feed for penaeid shrimp postlarvae OMA
Abelin, P.; Tackaert, W.; Sorgeloos, P..
Unlike <i>Artemia nauplii</i> which are used extensively as convenient live feed in aquaculture, large-scale utilization of <i>Artemia</i> juveniles and adults (biomass) is still very limited and in most cases restricted to those operations which are located near an <i>Artemia</i> production site. Currently applied techniques for preservation of <i>Artemia</i> biomass (e.g. blast-freezing or drying) are often cost prohibitive and in several cases not applicable at the remote and scattered sites where the <i>Artemia</i> biomass is available. An inexpensive technique which can be readily applied under field conditions and allowing to stabilize and retain the nutritional quality of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crustacean larvae; Developmental stages; Feed composition; Feed preparation; Food organisms; Shrimp culture; Artemia.
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2800
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Estimating the development of landrace and improved maize cultivars as a function of air temperature Ciência Rural
Langner,Josana Andreia; Streck,Nereu Augusto; Dalmago,Genei Antonio; Reiniger,Lia Rejane Silveira; Durigon,Angelica; Silva,Stefanía Dalmolin da; Lago,Isabel; Scheffel,Lúcio Gabriel; Poersch,Anderson Haas.
ABSTRACT: The objective of this study was to determine the maximum development rates for the phases of emergence, vegetative and reproductive, and to test the performance of the Wang and Engel (WE) model for simulating the development of landrace and improved maize cultivars sown on different dates. Model calibration was with data collected from a field experiment with a sowing date on December 13, 2014, and the model was tested with independent data from experiments with five sowing dates (August 20 and November 4, 2013, February 3 and August 15, 2014, and January 7, 2015) in Santa Maria, RS. The experiment was a complete randomized block design with four replicates. The dates of emergence (EM), silking (R1), and physiological maturity (R6) of two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays L; Modeling; Phenology; Developmental stages.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001737
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Growth and development of the pearl millet plant Open Agri
R.K..
Palavras-chave: Leaf area; Millets; Grain; Stages; Dry matter; Reproductive stage; Developmental stages; Vegetative stage; Bakery products; Cereal crops.
Ano: 1981 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4211
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Hematological parameters of three freshwater stingray species (Chondrichthyes: Potamotrygonidae) in the middle Rio Negro, Amazonas state. Repositório Alice
OLIVEIRA, A. T. de; SANTOS, M. Q. de C.; ARAÚJO, M. L. G. de; LEMOS, J. R. G. de; SALES, R. S. de A.; ARIDE, P. H. R.; PANTOJA-LIMA, J.; TAVARES-DIAS, M.; MARCON, J. L..
This paper aimed to study and compare the hematology of newborns, young, subadults, adult males, adult females and pregnant females of Potamotrygon wallacei (cururu stingray), Potamotrygon motoro and Paratrygon aiereba. Newborn cururu stingrays had lower red blood parameters than those of other development stages. Thrombograms and leukograms showed a conservative pattern between development stage, sexual dimorphism and pregnancy. In P. motoro and P. aiereba, variables relating to red blood parameters, biochemistry and leukograms showed little variation between the species' biological characteristics, thus showing that these variables are not good criteria for differentiating them within the same species. In conclusion, the development stage is an important...
Tipo: Artigo de periódico Palavras-chave: Hematologia; Etapa de desenvolvimento animal; Hematology; Developmental stages; Sexual dimorphism.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1051883
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Historia de vida temprana de la corvina rubia (Micropogonias furnieri, Sciaenidae) en el Estuario del Río de La Plata OceanDocs
Braverman, M..
This study encompasses the bio-physical interactions of whitemouth croaker (Micropogonias furnieri) early life stages living in La Plata estuary (Argentina-Uruguay, South America) to understand how they take advantage of the estuarine dynamics while traveling from spawning to nursery areas and undergoing ontogenetic and associated ecological changes. The analyses used include studies of spatio-temporal distribution length-dependent patterns; growth patterns looking for settlement marks in otoliths; and development related to metamorphosis and ontogenetic variations of the diet and trophic level. Samples and data come from vertically stratified samplings from 3 cruises (2005, 2006 and 2009). Distributional data also comes from an historic database. Results...
Tipo: Theses and Dissertations Palavras-chave: Fish larvae; Developmental stages; Metamorphosis; Larval settlement; Ontogeny; Saline fronts; Estuarine dynamics.
Ano: 2011 URL: http://hdl.handle.net/1834/4187
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Marigold: A Diagnostic Tool for BGM Forecasting and Management in Chickpea Open Agri
Pande,S.
Palavras-chave: Chickpeas; Forecasting; Fungicides; Fungi; Fruits; Application methods; Developmental stages; Environment; Mass media; Diseases.
Ano: 1997 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3211
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Patrones de distribución espacio-temporal de los estadíos embrionarios y larvales de la anchoíta (Engraulis anchoita Hubbs & Marini) a micro y macro-escala. Su relación con la supervivencia OceanDocs
Sánchez, R.P..
This dissertation is focused on the study of implications of spatial patterns on survival of eggs and larvae and subsequent recruitment of the SW Atlantic anchovy, Engraulis anchoita. The study of distribution patterns is encompassed within the conceptual framework of the analysis of reproductive strategies of marine bony fish, as adaptations that enable them to cope with and actively exploit environmental variability, regulating their abundance and avoiding extinction. The SW Atlantic anchovy, is ideally suitable for studies on reproductive biology and recruitment on a comparative basis. Its spawning and nursery grounds are located in very diverse ecosystems. This variety refers to their physico-chemical properties, carrying capacity, the influence of...
Tipo: Theses and Dissertations Palavras-chave: Fish eggs; Fish larvae; Recruitment; Ichthyoplankton; Biomass; Reproduction; Developmental stages; Mortality; Stock assessment; Environmental conditions; Biomass; Developmental stages; Stock assessment; Fish larvae; Reproduction; Mortality; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2230; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1995 URL: http://hdl.handle.net/1834/1491
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Pearl Millet Male-Sterile Line ICMA 4 and its Maintainer Line ICMB 4 Open Agri
Palavras-chave: Hybrids; Animal fibres; Grain; Millets; Selection; Yields; Tropical zones; Crossing over; Developmental stages; Animal husbandry.
Ano: 1985 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3770
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Pollen as a means of international transfer of germplasm Open Agri
Mallikarjuna, N.,( Nalini Mallikarjuna ).
Palavras-chave: Chickpeas; Sucrose; Self pollination; Germplasm; Crossing over; Grain; Developmental stages; Purification; Organic compounds; Legumes.
Ano: 2007 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3290
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Production, utilization and manipulation of <i>Artemia</i> as food source for shrimp and fish larvae OMA
Lavens, P.; Léger, P.; Sorgeloos, P..
Larval culture of fish and shrimp can be seriously improved thanks to the results of recent research and development in the field of <i>Artemia</i> production and utilization. The present article summarizes the most recent techniques for optimation in production and use of different stages of <i>Artemia</i> in aquaculture:- cyst selection in function of hatching quality, purity, biometric characteristics, etc. - nauplii production: techniques for hatching, disinfection and decapsulation;- nutritional value of nauplii: quantitative aspects with regard to essential components and contaminants;- bioencapsulation of nauplii with different enrichment components: methodology and results in fish and shrimp culturing;- utilization of (pre-)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Brine shrimp culture; Developmental stages; Fish culture; Food organisms; Nutritive value; Shrimp culture; Artemia.
Ano: 1986 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3245
Registros recuperados: 22
Primeira ... 12 ... Última
 

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