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| Registros recuperados: 147 | |
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| Braun, M.; Claramunt, G.; Reyes, H.; Catasti, V.; Montenegro, C.; Baros, V.; Díaz, E.; Pizarro, J.; Pizarro, P.. |
| El informe contiene los resultados correspondientes al desarrollo del crucero Módulo huevos y Módulo adultos del Proyecto FIP 2003-07. De conformidad con la metodología planteada en la propuesta técnica y con el fin de estimar los parámetros biológicos que requiere la aplicación del Método de Producción de Huevos, a saber: fecundidad media poblacional, frecuencia de desove, proporción sexual, producción diaria de huevos y peso estimado de hembras maduras, se realizaron los respectivos muestreos para el recurso anchoveta, durante el período de máxima actividad reproductiva del año 2003. |
| Tipo: Report |
Palavras-chave: Stock assessment; Reproduction; Eggs; Fecundity; Pelagic fisheries; Spawning; Eggs; Stock assessment; Spawning; Reproduction; Fecundity; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_5659. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1732 |
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| Pájaro, M.; Hansen, J.E.; Leonarduzzi, E.. |
| Engraulis anchoita northern stock reproductive biomass (SSB) during the 1993-2008 period was estimated applying the Daily Egg Production Method (DEPM) and accuracy of estimates assessed using a bootstrap technique (SW Atlantic Ocean, Argentine Sea). The basic data were collected in different research surveys carried out in late Spring, at the peak of the spawning season. The aim of this work was to build reliable confidence intervals around the estimates of the mean reproductive biomass applying a non-parametric bootstrap method. Resampling methods are becoming increasingly popular as statistical tools as they are robust and do not require the assumption of any particular distribution of the basic data. This is especially relevant when assessing the DEPM... |
| Tipo: Journal Contribution |
Palavras-chave: Spawning; Stocks; Fecundity; Biomass; Statistical analysis. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5494 |
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| Cavalli, R.O.; Lavens, P.; Sorgeloos, P.. |
| The breeding frequency, fecundity, egg hatchability, larval output and viability of pond-reared, mature <i>Macrobrachium rosenbergii</i> females were individually followed up during 180 d. Sexually mature prawns were maintained under controlled laboratory conditions (28.7 C and 12-h light/d) in a 190-L freshwater recirculation system and fed a formulated diet. Ovarian development, moulting and spawning events were checked daily. At least six consecutive moults were recorded for each of the 18 females. The duration of the intermoult period averaged 27.5 d and was not affected by ovarian development or spawning, but intermoult periods followed by spawning had significantly lower growth rates. From a total of 126 moulting events recorded, egg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fecundity; Moulting; Prawn culture; Rearing; Recirculating systems; Reproductive cycle; Macrobrachium rosenbergii. |
| Ano: 2001 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8494 |
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| Silva,Leandro Carvalho da; Nere,Daniel Rodrigues; Bleicher,Ervino; Barbosa,Antônio Vinícius Correa; Tavares,Eraldo José Madureira. |
| Abstract: The objective of this work was to evaluate the resistance of advanced semi-erect cowpea (Vigna unguiculata) lines, by means of a screening assay for resistance and the elaboration of fertility-life tables of Aphis craccivora (Hemiptera: Aphididae). The experiments were carried out in a screenhouse. For the resistance trial, 15 advanced cowpea lines were used, as well as two standard genotypes for resistance and two for susceptibility, which were arranged in six blocks. After resistance was determined, two lines with the highest and lowest resistance were selected for the development of the fertility-life tables which were used to estimate demographic parameters. The MNCO4-762F-03 and MNCO4-762F-09 cowpea lines were classified as resistant, for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aphis craccivora; Vigna unguiculata; Fecundity; Plant health; Plant resistance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800900 |
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| Gómez-Torres,Mariuxi Lorena; Nava,Dori Edson; Parra,José Roberto Postali. |
| Thermal hygrometric requirements for the rearing and release of Tamarixia radiata (Waterston) (Hymenoptera, Eulophidae). Tamarixia radiata is the main agent for the biological control of Diaphorina citri in Brazil with a parasitism rate ranging from 20 to 80%. This study investigated the influence of temperature on the development, fecundity and longevity of adults of T. radiata and the effect of relative humidity (RH) on their parasitism capacity and survival rate in the pre-imaginal period. The effect of temperature was assessed in the range between 15 and 35 ± 1ºC, 70 ± 10% RH, and a 14-h photophase. The RH effect was evaluated in the range from 30 to 90 ± 10%, temperature at 25 ± 1ºC, and photophase of 14-h. At 25ºC, circa 166.7 nymphs were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Capacity; Fecundity; Longevity; Psyllid. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000300011 |
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| Calado,Daniéla C.; Navarro-Silva,Mario Antonio. |
| Influence of temperature on longevity, fecundity, and haematophagic activity of Aedes (Stegomyia) albopictus Skuse, 1894 (Diptera, Culicidae) under laboratory condition. Based on adults of Aedes albopictus maintained under four constant temperatures, 15ºC, 20ºC, 25ºC and 30ºC, longevity of males and females, fecundity, eggs viability, number of days from emergence to the first bloodsucking, and duration of the preoviposition period were observed. The average of the longevity for female was 19.45, 59.35, 61.55 and 42.72 days, under 15ºC, 20ºC, 25ºC and 30ºC, respectively. The greatest average number of bloodsucking per female was 8.32, under 25ºC. The average number of eggs per female was 1.00, 73.91, 269.87 and 183.69, and the greatest rates of viable eggs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes albopictus; Biology; Fecundity; Longevity; Temperature. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000100011 |
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| Mariottini,Y.; De Wysiecki,M.L.; Alberti,A.; Lange,C.E.. |
| Abstract Borellia bruneri, a common grasshopper in much of the grasslands of Argentina and Uruguay, is considered, according to the categories widely accepted for defining the pest status of grasshopper species, a “Frequent plague of importance”. In order to determine fundamental aspects of its biology and reproduction, three cohorts of B. bruneri were monitored under controlled conditions (30º C, 14L: 10D, 40% RH). The total duration of nymphal development was 50.6 days, both males and females having five nymphal instars. There was a significant difference in the duration of the different stages within each cohort. In the three cohorts, the first instar duration (12.87 days) was longer than the rest, approximately 5.6 days more than the second that was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grasshoppers; Cohorts; Longevity; Fecundity; Nymphal development. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100207 |
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| Montezano,Débora G.; Sosa-Gómez,Daniel R.; Paula-Moraes,Silvana V.; Roque-Specht,Vânia F.; Fronza,Edegar; Barros,Neiva M.; Specht,Alexandre. |
| ABSTRACT The biotic potential and reproductive parameters of Spodoptera dolichos (Fabricius, 1794) were evaluated under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 25 couples were evaluated. The longevity of females (12.9 days) was not significantly different than that of males (12.4 days). The mean durations of the pre-, post- and oviposition periods were 3.0, 0.4 and 10.4 days, respectively. The mean fecundity was 4,086.0 eggs per female and mean fertility was 3,557.8 larvae per female. On average, a female copulated 1.4 times. The biotic potential of S. dolichos was estimated at 7.138 x 1018 individuals/female/year. The net reproductive rate (Ro)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Development; Fecundity; Reproduction; Spermatophore. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600485 |
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| Maia,Renata; Artioli,Luiz G. S.; Hartz,Sandra M.. |
| This study analyzed the diet and reproductive dynamics of Trachelyopterus lucenai Bertoletti, Pezzi da Silva & Pereira, 1995, an allochthonous fish species in the subtropical coastal lagoons of the Tramandaí River, Rio Grande do Sul, Brazil. The fecundity of the species is described for the first time. Specimens were captured in the interconnected lagoons Itapeva, Quadros and Malvas, on a monthly basis, from November 2008 to April 2010, with gillnets of different mesh sizes. The food items identified were assessed for abundance and frequency of occurrence. The sex ratio, reproductive period for males and females, for mature females, fecundity, were estimated. These results were analyzed with respect to seasonal variation. We captured 135... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allochthonous species; Fecundity; Opportunist-generalist. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000300002 |
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| Rivero,Edgar; Vásquez,Carlos. |
| Biological aspects and life table of the red spider mite, Tetranychus desertorum Banks, 1900, were studied on leaf discs of kidney bean (Phaseolus vulgaris Linnaeus) cultivar "Tacarigua" under laboratory conditions (28 ± 2ºC, 70 ± 10% R.H. and 12:12h). Our results showed that total developmental time was 6.8 days for females, with partial duration of immature stages corresponding to 3.8, 1.4, 1.0 and 0.7 for egg, larva, protonymph and deutonymph, respectively. Preoviposition, oviposition and postoviposition periods were 1.1, 8.4 and 1.3 days, respectively; and the higher mean fecundity (6.93 eggs/female/day) was observed on day 4. Female mean longevity was 10 days. The life table parameters recorded were: net reproduction rate (Ro) = 41.10 individuals;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fecundity; Life history; Red spider mite; Tetranychid. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000100007 |
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| Costa,Tarso; Soares-Gomes,Abilio. |
| A population of the fiddler crab Uca rapax (Smith, 1870) found in Itaipu Lagoon, southeast Brazil, was sampled monthly from July 2006 to June 2007 in order to study population and reproductive features. The sex ratio of the population was statistically different from the expected (1:1) in almost every month, with a predominance of males. The reproductive cycle and the recruitment of juveniles were continuous, with two peaks. The fecundity ranged from 1.110 to 13.189 eggs (4.984 ± 2.493.8), not differing statistically among seasons. In contrast, the relative fecundity (F') and the reproductive intensity index (RII) were highest in the summer. Female size at the onset of sexual maturity was estimated as 6.1 mm and egg diameter ranged from 0.20 to 0.28 mm.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fiddler crab; Fecundity; Reproduction; Sex ratio. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400009 |
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| Wehrtmann,Ingo S.; Magalhães,Célio; Hernáez,Patricio; Mantelatto,Fernando L.. |
| Freshwater crabs are an important component of the fauna of limnic environments, and out of the two true freshwater crab families present in the Neotropics, Pseudothelphusidae is the most diverse. Considering the lack of information regarding reproductive features of neotropical freshwater crabs, we studied, for the first time, the fecundity and the presence of juveniles carried by females of two pseudothelphusids from the Amazon region - Kingsleya latifrons (Randall, 1840) and Kingsleya ytupora Magalhães, 1986 - and one from Central America - Potamocarcinus magnus (Rathbun, 1896). The two Kingsleya species produced relatively few (56-114) and large eggs (1.9-3.7 mm), typical for species with an abbreviated or direct development. Recently produced eggs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Costa Rica; Freshwater crabs; Direct development; Fecundity; Parental care. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600019 |
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| Rondineli,Giulianna; Carmassi,Alberto Luciano; Braga,Francisco Manoel de Souza. |
| Taunayia bifasciata (Eigenmann & Norris, 1900) is a small catfish that inhabits headwater streams of the Tietê and Paraíba do Sul river basins, southeastern Brazil, being restricted to the Atlantic rain forest. The species is found on lists of threatened species of Brazil and the state of São Paulo. Despite that, there is no literature information about the biology of the species. In the present study we endeavored to collect data on the biology of T. bifasciata. A total of 37 specimens were captured in two streams, Piracuama and Oliveiras. Of those, 22 were females, 14 were males and 1 specimen was immature. Adults with mature gonads were captured in all samples excepting the last, suggesting that T. bifasciata has a long reproductive season. The... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Diet; Fecundity; Population structure; Reproductive season; Eastern Serra da Mantiqueira. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000400018 |
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| Martins,Itamar A.. |
| This study reports the rediscovery of Holoaden luederwaldti Miranda-Ribeiro, 1920 and provides information on the distribution, sexual dimorphism, reproduction and vocalization of a population of this species in Campos do Jordão, São Paulo (southeastern Brazil). Sampling was carried out in the Parque Estadual de Campos do Jordão (PECJ) from October 2005 through December 2008. Collecting was conducted using pitfall traps with a drift-fence on different altitudinal gradients (1,540 m, 1,780 m and 2,000 m a.s.l.). Fifty-two specimens of H. luederwaldti were collected in the PECJ. The mean snout-vent length (SVL) was 36.17 mm for males and 42.61 mm for females, indicating sexual dimorphism in body size. Holoaden luederwaldti occurred during the warm-rainy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Advertisement call; Atlantic forest; Fecundity; Holoaden; Use of habitat. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000100007 |
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| Registros recuperados: 147 | |
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