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| Registros recuperados: 55 | |
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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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| 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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| Giannotti,Edilberto. |
| Studies on nests of the social wasp Polistes (Epicnemius) cinerascens Saussure showed correlation between the size of the comb and thickness of the peduncle, besides of the height of the complete cells and the number of generations produced. The duration of the colony cycle (199.3 days), the number of cells built (102.9) and adults produced (94.2) allowed to establish the rates: 0.5 cells/day, 0.3 adults/day, and 0.8 adults/cell, the % of productive cells/ nest (55.2), and the number of the generations/colony (up to 4 generations). The number of instars was 5; the growing ratio 1.3; the duration of the immature stages was eggs = 13.0 days, larvae = 23.7, pupae = 22.2 and total duration = 58.6 days; and the longevity of adult wasps = 38.3 days. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Colony cycle; Immature stages; Longevity; Life table. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000100008 |
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| Forero-Medina,German; Vieira,Marcus Vinícius; Grelle,Carlos Eduardo de Viveiros; Almeida,Paulo Jose. |
| Because extinctions are not random across taxa, it is important for conservation biologists to identify the traits that make some species more vulnerable. Factors associated with vulnerability include small geographical ranges, low densities, high trophic level, "slow" life histories, body size, and tolerance to altered habitats. In this study we examined the relationship of body size, reproductive output, longevity, and extinction risk for carnivores occurring in Brazil. We used generalized linear models analyses on phylogenetically independent contrasts to test the effect of body size alone, and the combined effect of body size, litter size and longevity on extinction risk. Body size appeared in the two best models according to the selection criteria... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carnivores; Independent contrasts; Longevity; Reproductive output; South America; Vulnerability to extinction. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000200004 |
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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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| Bastos, Marisa Silva; Rezende, Marcos Paulo Gonçalves; Souza, Julio Cesar; Leite, Maybe Carneiro Paula; Figueiredo, Gabriel Chaves. |
| Aimed to evaluate the coat and Quarter reproductive age used in equine production used in Vaquejada in micro regions of the Northeast. They used information from 264 horses, taken from the database of the Association of Quarter Horse Breeders (ABQM). Were collected individual information: date of birth, sex and animal fur, number of copies of disputed official Vaquejada, better and worse placed, cumulative score in ABQM, coats and dates of parents' birth (31), coats and birth dates mothers (257). There was a higher frequency (P<0.05) of births between the months of September and October. There was no age-specific greater use of stallions or matrix playback (P>0.05). There was no correlation (P>0.05) between the number of children and the stallion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Equus caballus; Equestrian sport; Phenotype; Longevity; Reproduction.. |
| Ano: 2017 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/13675 |
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| Eira,Mirian T. S.; Silva,E. A. Amaral da; De Castro,Renato D.; Dussert,Stéphane; Walters,Christina; Bewley,J. Derek; Hilhorst,Henk W. M.. |
| Considerable advances in our understanding of coffee seed physiology have been made in recent years. However, despite intense research efforts, there are many aspects that remain unclear. This paper gives an overview of the current understanding of the more important features concerning coffee seed physiology, and provides information on recent findings on seed development, germination, storage and longevity. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea; Coffee; Germination; Germplasm; Longevity; Seed development; Storage. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000100011 |
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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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| 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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| 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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| 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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| Registros recuperados: 55 | |
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