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| Registros recuperados: 55 | |
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| Romero Rodríguez, Jorge Arturo. |
| Especies de la familia Caricaceae han encontrado condiciones favorables para desarrollar y diversificarse en México, cinco de los géneros que prosperan en América, cuentan con al menos una especie en el país y se considera que la especie más importante económicamente, Carica papaya L., tiene su centro de alta diversidad en el sureste del país, además de dos géneros endémicos que prosperan en regiones semiáridas y de bosque mesófilo. Sin embargo, la investigación que se realiza al respecto es limitada y buena parte de la información existente de la familia proviene de otras latitudes. Dada la responsabilidad del país de salvaguardar y dar uso eficiente a la diversidad de Carica papaya y demás integrantes de la familia Caricaceae, la presente investigación... |
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Palavras-chave: Germoplasma; Diversidad; Longevidad; Latencia; Acondicionamiento; Germplasm; Diversity; Longevity; Latency; Profit; Producción de Semillas; Doctorado. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2192 |
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| Laranja,Alessandra Theodoro; Manzatto,Antonio José; Campos Bicudo,Hermione Elly Melara de. |
| Caffeine and used coffee grounds completely blocked the development of Aedes aegypti in the early stages, in treatments with the concentrations 1.0 mg/mL and 50 mg/mL, respectively. More advanced stages and even adults were obtained in lower concentrations of both substances, enabling observations to be made of mortality rate, longevity and esterase patterns. The experiments involved treatments using either eggs or 3rd instar larvae (L3), with or without the addition of fish food. Mortality rates prior to the adult stage and adult longevity were significantly different in the comparisons among treatments, in every kind of experiment, but in those using L3 larvae, their percentages were smaller. Observations of the time of larva and adult onset suggested... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedes aegypti; Caffeine; Used coffee grounds; Mortality; Longevity; Esterases; Alternative control. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000400004 |
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| Núñez,Verónica. |
| Physa acuta Draparnaud, 1805 is an invasive gastropod that can affect local species. In Argentina, it is widespread and abundant, even in environments inhabited by the native species Stenophysa marmorata Guilding, 1828. Its predominance raises the question whether this could be explained by a more successful energy allocation in functional requirements (growth, reproduction and survival) compared to S. marmorata. This study was aimed at comparing growth rates, as well as survival and fecundity, between both species under laboratory conditions. Individuals born on the same day were grouped in four per aquaria and kept under controlled conditions of food, light, and temperature. Snails were weekly measured (maximum shell length), and growth rates were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fecundity; Invasive species; Longevity; Physa acuta; Stenophysa marmorata. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300014 |
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| Grill, A.; Cerny, A.; Fiedler, K.. |
| Maniola butterflies undergo summer dormancy in dry and hot habitats and deposit their eggs only in early autumn when conditions become more favourable for their offspring. Female individuals of this genus are therefore relatively long-lived. For long-lived butterflies adult diet is of particular importance. We tested if added amino acids in nectar substitute fed to the butterflies affected timing of oviposition, fecundity and longevity. A hundred Maniola females were sampled from Mediterranean and Central European populations and made to oviposit under controlled laboratory conditions. Forty individuals were offered sucrose solution with additional amino acids while the remainder were fed with plain sucrose solution. We found that egg-laying strategies and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Butterfly ecology; Oviposition; Longevity; Maniola; Summer dormancy; Nectar amino acids; Nymphalidae; 42.75. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/440770 |
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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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| Hernández,Emilio; Escobar,Arseny; Bravo,Bigail; Montoya,Pablo. |
| We evaluated three packing systems (PARC boxes, "GT" screen towers and "MX" screen towers) for the emergence and sexual maturation of sterile fruit flies, at three adult fly densities (1, 1.2 and 1.3 fly/cm²) and three food types. At the lowest density, results showed no significant differences in the longevity and flight ability of adult Anastrepha ludens (Loew) and Anastrepha obliqua Macquart among the three packing systems. Higher densities resulted in a decrease in these parameters. In the evaluation of the three food types, no significant differences were found either on longevity or flight ability of A. ludens. However, the greatest longevity for both sexes A. obliqua was obtained with commercial powdered Mb® and the mix of sugar, protein and corn... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Longevity; Flight ability; Emergence tower; Anastrepha ludens; Anastrepha obliqua. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400021 |
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| Bervian,Giovana; Fontoura,Nelson F.. |
| The growth of Atherinella brasiliensis (Quoy & Gaimard, 1824) was studied through monthly samples taken at Tramandaí Lagoon, Imbé County, Rio Grande do Sul, Brazil. Animals were captured using a beach seine net. Length-weight relationships and age- growth curves for males and females were adjusted. The growth parameters of the von Bertalanffy growth formulae are Linf=16.0 and k=0.883 for males and Linf=17.0 and k=0.825 for females. First reproduction occurred one year after recruitment. Once reaching maturity, adults of A. brasiliensis reproduced once more in the next spring with two-year-olds and disappeared soon after from size frequency distributions. A few captured animals showed a size compatible with an age of three years. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atherinidae; Longevity; Life cycle; Life history. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000400008 |
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| Santos,Rosa S.; Costa,Marcus R. da; Araújo,Francisco G.. |
| ABSTRACT Studies on age and growth of fish populations have direct application in fisheries and contribute for policies of conservation. Our aim was update information on the Micropogonias furnieri growth parameters based on sagittae otoliths annulis readings, and we expected that the studied population from Southeast Brazil can reach more longevity than the reported in the available literature. We examined 286 individuals between August-2010 and July-2011 from Ubatuba Bay, SP. The Total Length ranged 200-480 mm. The determined growth parameters were: Males, L∞ =523.4mm, k = 0.05×year-1, t0 = -8.78 year; Females L∞ = 573.5mm, k = 0.06 × year-1, t0 = -7.49 year. The MI and % of edge type evidenced the formation of one ring per year during autumn/winter,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal fishes; Growth parameters; Longevity; Marginal increment; Ubatuba. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100223 |
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| 前田, 聖子; 仲島, 義貴; 田頭, 栄子; 高木, 正見. |
| We investigated effects of sucrose solution on Onus sauteni nymphal survival rates, adult longevity and fecundity in the absence of arthropod prey. When first instar and third instar nymphs were fed 30% sucrose solution, they lived longer and reached a later instar than those fed on distilled water. However, there were no significant differences in longevity and fecundity between adult females fed sucrose and those fed distilled water. Therefore, sucrose solution provides nutritional benefits to O. sauteri nymphs, but other materials (i.e. protein) may be necessary to increase adult performance. In agro-ecosystems, it is regarded that biological control using O. sauteri can be enhanced by application of sucrose solution as a food source. |
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Palavras-chave: Orius sauteri; Sucroce; Longevity; Fecundity. |
| Ano: 2002 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2532 |
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| 林, 佐季; 仲島, 義貴. |
| We investigated effects of sugar solution on adult longevity, progeny production and progeny sex ratio of Aphidius ervi in the presence and absence of host aphids. When female parasitoids were provided with 50% glucose–fructose solution in 1 : 1 ratio, they lived approximately twice longer than those provided with distilled water, irrespective of host aphid provision. The same effect of sugar solution was also observed on progeny production. When the parasitoid was fed sugar solution, its lifetime progeny production approximately doubled in comparison to that provided with water, whereas daily progeny production did not differ. Total number of female progeny did not differ between adult female provided with water and sugar solution, but significantly... |
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Palavras-chave: Biological control; Sex ratio; Sugar; Longevity; Fecundity. |
| Ano: 2014 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4035 |
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| Santos,Laís da Conceição dos; Santos-Cividanes,Terezinha Monteiro dos; Cividanes,Francisco Jorge; Matos,Sidnéia Terezinha Soares de. |
| The objective of this work was to evaluate the development, survival, reproductive capacity, and longevity of the Asian ladybug Harmonia axyridis in comparison with Cycloneda sanguinea and Hippodamia convergens. Coccinellid larvae and adults were fed daily with Schizaphis graminum. Ten couples of each species were isolated for evaluation of the adult phase. The duration of the larval stage of H. axyridis is the longest (10.2 days) and its adults are the heaviest (29.7 mg) compared with C. sanguinea and H. convergens. The three species showed similar percentages of survival during the developmental stages. An average of 82% of C. sanguinea, H. axyridis, and H. convergens larvae reached adulthood, which indicates that temperature (25°C) and the offered prey... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Coccinellid; Development; Longevity; Ladybug; Predator. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001100001 |
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| Butt,Kevin Richard; Briones,Maria Jesús Iglesias; Lowe,Christopher Nathan. |
| Visual implant elastomer (VIE) has recently been employed to investigate different aspects of earthworm ecology. However, a number of fundamental questions relating to the detection and positioning of the tag, its persistence and potential effects on earthworms remain unknown. Seven earthworm species belonging to three ecological groupings, with different pigmentation and burrowing behaviour, were tagged using different coloured VIE. External inspection after two days, one week and 1, 10 and 27 months were followed by preservation, dissection and internal inspection. Tags could be seen in living specimens to 27 months, and dissection revealed that in most cases they were lodged in the coelomic cavity, held in place by septa. However, over longer time... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capture-mark-recapture methods; Chlorogogenous tissue; Longevity; Lumbricidae; Population monitoring. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800026 |
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| Dias-Filho,Moacyr B.. |
| The potential for seed bank formation of two perennial weed species, Ipomoea asarifolia (Desr.) Roem. & Schult. (Convolvulaceae) and Stachytarpheta cayennensis (Rich.) M. Vahl (Verbenaceae), both common in Amazonia , was evaluated in a degraded pasture area in eastern Brazilian Amazonia . Seeds were enclosed in nylon mesh packets and placed at the soil surface or buried at 5 or 10 cm deep. The number of viable seeds was recorded at 6, 10, 14 and 18 months after burial. Results showed that S. cayennensis has the ability to form persistent soil seed bank, while I. asarifolia seeds do not build up in the soil seed bank. For S. cayennensis and, to some extent, for I. asarifolia, seed survival was highest at greater burial depths. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Seed; Longevity; Stachytarpheta cayennensis; Ipomoea asarifolia. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581999000200002 |
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| BARBEDO,CLAUDIO J.; BILIA,DENISE A.C.; FIGUEIREDO-RIBEIRO,RITA DE CÁSSIA L.. |
| A exploração descontrolada do pau-brasil reduziu sua distribuição original a pequenos remanescentes na atualidade. O conhecimento da fisiologia da unidade de dispersão da espécie pode contribuir para a ampliação de seu cultivo, uso racional e conservação. A sensibilidade das sementes à dessecação foi avaliada em sementes recém-colhidas, separadas em quatro categorias (estádios I, II, III e IV), segundo avaliação visual de tamanho e cor. Sementes de cada estádio foram submetidas a secagem a 40 °C e a 50 °C, até que o teor de água atingisse 8% (base úmida). A capacidade de manutenção da viabilidade das sementes durante o armazenamento foi avaliada em diferentes embalagens (permeável, semi-permeável e impermeável), em ambiente natural (22 ± 7 °C) ou em câmara... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drying; Longevity; Orthodox seeds; Viability. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002012000007 |
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| SASSAKI,REGINA M.; ZAIDAN,LILIAN B.P.; FELIPPE,G.M.. |
| Bidens gardneri is a very common herbaceous species in the cerrados of the state of São Paulo, whose seeds become light sensitive at 25°C only. Achenes of this species were stored in refrigerator at 4°C and in cerrado soil and in forest soil. The field experiments were carried out in the cerrado at the Reserva Biológica e Estação Experimental de Moji Guaçu, in Moji Guaçu and in the forest of the Instituto de Botânica, in São Paulo, Brazil. Achenes of B. gardneri vary in size and achenes from 7 to 12 mm long were used. Achenes stored for up to 6 months at 4°C showed light sensitivity; after 9 months storage, the difference in germination between light and darkness had disappeared for the smallest and the largest achenes used. Seeds of B. gardneri germinated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bidens gardneri; Longevity; Light sensitivity. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000100010 |
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| Conti,Bruno F. De; Bueno,Vanda Helena P.; Sampaio,Marcus V.; Sidney,Livia A.. |
| Temperature is a key abiotic factor influencing the development and reproduction of aphids. The effect of temperature on the reproduction of three aphid species Aulacorthum solani (Kaltenbach), Macrosiphum euphorbiae (Thomas) and Uroleucon ambrosiae (Thomas) (Aphididae, Macrosiphini) has been investigated and fertility life tables were determined. Nymphs were reared in climatic chambers at temperatures of 16, 19, 22, 25, and 28 ± 1ºC, RH 70 ± 10% and 12 h photophase. Female adult aphids developed at these temperatures were then used in experiments in which pre-reproductive and reproductive periods were evaluated every 24 h. In addition, the number of nymphs produced and longevity were determined at each temperature. The reproduction period of A. solani and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aphids; Growing parameters; Intrinsic rate of increase; Lettuce; Longevity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000400018 |
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| Registros recuperados: 55 | |
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