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| Registros recuperados: 20 | |
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| Sánchez-Puccini,María B; Argothy-Bucheli,Rodrigo E; Meneses-Echávez,José F; López-Albán,Carlos Alejandro; Ramírez-Vélez,Robinson. |
| This study aimed to assess anthropometric and physical fitness characteristics of male elite karate athletes. Our study was carried out on a sample of 19 male Karate Athletes from Colombia (mean age 31.6±8.8 years). Different anthropometric measurements were taken (weight, height, diameters, circumferences, body composition) from which several anthropometric indices were calculated (body mass index, ponderal index, body index adiposity), and the somatotype was then determined. The performance tests carried out were: Astrand-Ryming protocol, vertical jump, anaerobic power and Wingate anaerobic test. The results (mean±SD) showed a body mass (65.4±12.0 kg), height (167.4±9.3 cm), percent body fat (13.6±3.0 %), ponderal index (41.0±1.8) and body adiposity... |
| Tipo: Journal article |
Palavras-chave: Karate; Body Composition; Somatotype; Fitness; Anthropometry. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000300045 |
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| de Avila Jr,Rubém Samuel. |
| Las interacciones antagonistas suelen ser clasificadas como negativas para el éxito reproductivo de los individuos. Entre estas interacciones, el comportamiento de pillaje de néctar floral por distintos grupos animales es una de las más frecuentes en las angiospermas. Los antagonismos constituyen importantes fuerzas selectivas de las características florales, del tipo y cantidad de recurso ofrecido, y del período de floración. Por esta razón es necesario analizar las distintas etapas reproductivas de las plantas considerando el posible efecto negativo de los pilladores de néctar, y así comprender mejor su impacto sobre el éxito reproductivo. Las flores de Besleria longimucronata presentaron una gran tasa de pillaje en observaciones efectuadas en 2005. El... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Fitness; Polinización; Fructificación; Antagonismo; Pillaje de néctar. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2010000200011 |
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| Lamego,F.P.; Vidal,R.A.; Burgos,N.R.. |
| The continuous use of ALS-inhibiting herbicides has led to the evolution of herbicide-resistant weeds worldwide. Greater beggarticks is one of the most troublesome weeds found in the soybean production system in Brazil. Recently, a greater beggarticks biotype that is resistant (R) to ALS inhibitors due to Trp574Leu mutation in the ALS gene was identified. Also, the adaptive traits between susceptible (S) and R to ALS inhibitors biotypes of greater beggarticks were compared. Specifically, we aimed to: (1) evaluate and compare the relative growth rates (RGR) between the biotypes; (2) analyze the seed germination characteristics of R and S biotypes under different temperature conditions; and (3) evaluate their competitive ability in a replacement series... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bidens; Fitness; Herbicide resistance; Replacement series. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000200024 |
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| Torres García, Jesús Rubén. |
| Las malezas compiten intensamente con los cultivos, por lo cual, los agricultores emplean prácticas de control (manual, mecánico y químico) para eliminarlas. Los herbicidas ejercen una presión de selección extrema (99.99%) sobre las poblaciones. Como consecuencia, en unas pocas generaciones se observan individuos resistentes (R) en las poblaciones de maleza. La resistencia a herbicidas es un proceso evolutivo causado por cambios metabólicos o genéticos. En algunas especies la resistencia va acompañada de una disminución en la aptitud competitiva (fitness). Esto puede ocasionar que las plantas resistentes sean desplazadas cuando el factor de selección se retire de las poblaciones. Phalaris minor (Poaceae) es una maleza que evolucionó hacia la adquisición de... |
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Palavras-chave: Fitness; Costo de la resistencia; Evolución; Ecología evolutiva; Doctorado; Botánica; Cost of resistance; Evolution; Evolutionary ecology. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1778 |
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| Molina-Montenegro,Marco A; Cavieres,Lohengrin A. |
| The size, form and color are signals used by flowers to attract their pollinators. Large and showy color flowers usually receive higher pollinators visitation rates. According to the optimal forage theory, pollinators would tend to visit flower patches where they obtain the maximum reward regarding the energy expenditure in flower search. In high density patches, flowers are very close each other, hence, flower discrimination by pollinators would tend to be low. In low density patches, however, where the forage effort is greater, larger flowers are usually associated with higher rewards and would receive higher pollinators visitation achieving greater fitness than co-especifics with smaller flowers. In the present study we assessed the effects of flower... |
| Tipo: Journal article |
Palavras-chave: Pollinators visit; Floral traits; Seed output; Fitness. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432006000100004 |
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| Leitwein, Maeva; Laporte, Martin; Le Luyer, Jeremy; Mohns, Kayla; Normandeau, Eric; Withler, Ruth; Bernatchez, Louis. |
| Human activities induce direct or indirect selection pressure on natural population and may ultimately affect population’s integrity. While numerous conservation programs aimed to minimize human‐induced genomic variation, human‐induced environmental variation may generate epigenomic variation potentially affecting fitness through phenotypic modifications. Major questions remain pertaining to how much epigenomic variation arises from environmental heterogeneity, whether this variation can persist throughout life, and whether it can be transmitted across generations. We performed whole genome bisulfite sequencing (WGBS) on the sperm of genetically indistinguishable hatchery and wild born migrating adults of Coho salmon (Oncorhynchus kisutch) from two... |
| Tipo: Text |
Palavras-chave: Conservation; Developmental plasticity; Epigenomic; Fisheries; Fitness; Hatchery; Salmonid. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/79977/82923.pdf |
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| Coquillé, Nathalie; Morin, Soizic. |
| Diatom teratologies have intrigued scientists since the XIXth century, with respect to their causes and origins. These deformities, mainly observed in long-term cultures or under high levels of pollution, were poorly considered, until they were recently found to be potential indicators of toxic impairment of freshwaters. However, very little is known about their ecology. In this study, the growth and fitness of morphologically distinct descendants of the same cell line of Gomphonema gracile (teratological vs. non teratological forms) were compared over a typical growth cycle. Contrary to expectations, teratological populations grew slightly faster, at a rate of 0.47 ± 0.03 divisions.day−1, versus 0.41 ± 0.04 for the normal morphotype. They had similar... |
| Tipo: Text |
Palavras-chave: Gomphonema gracile; Morphology-based assessment; Teratology; Transmissibility of morphological characters; Phenotypic variability; Fitness. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00502/61326/64913.pdf |
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| Westendorff,N.R.; Agostinetto,D.; Ulguim,A.R.; Langaro,A.C.; Thürmer,L.. |
| Weeds cause significant reduction in the irrigated rice crop yield. Cyperus esculentus (yellow nutsedge) is adapted to irrigate environment. Information on the competitive ability of the weed to the culture, and their environmental adaptation, are scarce. In this study, we sought to determine the initial growth and competitive ability of yellow nutsedge and irrigated rice, as a function of cultivar growth cycle. Initial growth and competition studies were conducted in a randomized complete design in a greenhouse in the agricultural year 2010/11. For the initial growth study, the treatments consisted of a factorial combination of a biotype of yellow nutsedge and two rice cultivars in the function of the vegetative cycle (BRS Querência: early cycle - IRGA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyperus esculentus; Oryza sativa; Competition; Fitness. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400007 |
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| Clerissi, Camille; De Lorgeril, Julien; Petton, Bruno; Lucasson, Aude; Escoubas, Jean Michel; Gueguen, Yannick; Dégremont, Lionel; Mitta, Guillaume; Toulza, Eve. |
| Pacific Oyster Mortality Syndrome (POMS) affects Crassostrea gigas oysters worldwide and causes important economic losses. Disease dynamic was recently deciphered and revealed a multiple and progressive infection caused by the Ostreid herpesvirus OsHV-1 μVar, triggering an immunosuppression followed by microbiota destabilization and bacteraemia by opportunistic bacterial pathogens. However, it remains unknown if microbiota might participate to protect oysters against POMS, and if microbiota characteristics might be predictive of oyster mortalities. To tackle this issue, we transferred full-sib progenies of resistant and susceptible oyster families from hatchery to the field during a period in favor of POMS. After 5 days of transplantation, oysters from... |
| Tipo: Text |
Palavras-chave: Holobiont; Microbiome; Metabarcoding; Fitness; Bacteria. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00621/73332/72500.pdf |
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| Paes,L.S.; Borges,J.P.; Cunha,F.A.; Souza,M.G.C.; Cyrino,F.Z.G.A.; Bottino,D.A.; Bouskela,E.; Farinatti,P.. |
| This study compared strategies to equalize the volume of aerobic exercise performed with different intensities by Wistar rats, based on the distance covered during exercise bouts and energy expenditure (EE, isocaloric sessions) obtained from oxygen uptake (V̇O2) or respiratory exchange ratio (RER). Thirty-three male rats (270.5±12.8 g) underwent maximal exercise tests to determine V̇O2 reserve (V̇O2R), being randomly assigned to three groups: moderate-intensity continuous exercise at speed corresponding to 50% V̇O2R (MIC; n=11); high-intensity continuous exercise at 80% V̇O2R (HIC; n=11); and high-intensity intermittent exercise (HII; n=11) at 60% V̇O2R (3 min) and 80% V̇O2R (4 min). Exercise duration was calculated individually to elicit EE of 5 kcal in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy expenditure; Aerobic exercise; Exercise testing; Metabolism; Fitness. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000800607 |
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| Boivin,Guy. |
| Several proxies can be used to estimate the fitness of egg parasitoids: size, longevity, fecundity, mating ability and vagility. All these proxies are positively correlated with the lifetime fitness gain of an individual. However, the phenotypic plasticity, which is the ability of a genotype to produce distinct phenotypes depending on environmental conditions, may alter the value of these proxies. Host related factors (host species and quality), competition and duration of development will influence the proxies expressed by a given phenotype. When the phenotype is modified by the temperature at which an individual develops, the resulting phenotype will vary based on the life history strategy of the parasitoid. While in koinobiont species an increase in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitness; Proxy; Reproduction; Longevity; Phenotype. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400001 |
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| Medeiros,Estevão Rodrigues; Pelicice,Fernando Mayer; Agostinho,Carlos Sergio; Marques,Elineide Eugênio. |
| The present study investigated energy allocation patterns in three fish species from the family Hemiodontidae (Argonectes robertsi, Hemiodus microlepis, and Hemiodus unimaculatus), before and after the construction of Lajeado Dam, Tocantins River, Amazon basin. Changes in the use of energy (between somatic and reproductive processes) were indirectly evaluated by means of temporal variations in fish body condition, feeding activity, visceral fat storage, and reproductive effort. Fish were collected from October 1999 to September 2004, in periods that preceded and followed the construction of the dam. We recorded significant changes in all ecological traits for the three analyzed species (for males and females). In general, there was an intense reduction in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body condition; Colonization; Fitness; Reproduction; River regulation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300649 |
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| Registros recuperados: 20 | |
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