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| Registros recuperados: 18 | |
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| 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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| 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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| 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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| 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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| 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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| Registros recuperados: 18 | |
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