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| Registros recuperados: 206 | |
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| Gomes,Ismael Barros; Trindade,Roseane Cristina Predes; Sant'Ana,Antônio Euzébio Goulart; Lemos,Eurico Eduardo Pinto de; Basílio Júnior,Irinaldo Diniz. |
| ABSTRACT: The aim of this study was to evaluate the bioactivity of microencapsulated extract from the soursop seeds, Annona muricata L. ( Annonaceae ), on diamondback moth, Plutella xylostela L. (Lepidoptera: Plutellidae ). Microencapsulation was performed in a Mini Spray Dryer model B-290 using 50mL of ethanolic and hexanic extracts plus 150mL of ethanol and 150mL of ultrapure water, mixed with aerosil (first polymer) or arabic gum (second polymer). It was possible to microencapsulate the ethanolic extract of soursop seeds only by using the polymer arabic gum at 20%. The microencapsulated extract caused significant acute toxicity (LC50=258mg L-1) and chronic effects, especially reduction of larval viability and increased larval stage. We concluded that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diamondback moth; Annona muricata; Biology; LC50.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500771 |
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| CARNEIRO, J. da S.; HAJI, F. N. P.; SANTOS, F. de A. M.. |
| A cultura do tomate na Serra da Ibiapaba, no Estado do Ceará, é considerada uma das atividades agrícolas mais importantes e geradora de divisas para esta região. Entretanto, apresenta como uma das pragas chave a broca pequena, Neoleucinodes elegantalis (Guen.) (Lepidoptera: Pyralidae). Essa praga ocorre geralmente em elevadas infestações, ocasionando danos à produção em até 90%, pela destruição e apodrecimento dos frutos, levando os produtores a realizarem até duas pulverizações por semana. Sua ocorrência foi constatada no Brasil, em 1922, no Ceará, e em 1939, em São Paulo, encontrando-se atualmente disseminada em quase todas as regiões produtoras de tomate do Brasil. Na região Nordeste, a sua ocorrência é generalizada, exceto no Submédio do Vale do São... |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Bioecologia; Controle; Elegantalis; Pest insect; Biology; Bioecology; Control; Tomate; Inseto; Controle biológico; Biologia; Ecologia; Lycopersicon Esculentum; Praga; Biological control; Neoleucinodes; Ecology; Tomatoes. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/151076 |
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| Hernández Fuentes, Luis Martín. |
| La guanábana tiene un gran futuro en el mercado mexicano y de exportación; sin embargo, su producción se ve afectada por el ataque de plagas y enfermedades. B. cubensis es una de las plagas que causan mayores pérdidas económicas al cultivo de guanábana en México. Se han observado 60% de frutos dañados y de 5 a 50 semillas con daño por fruto, lo cual ocasiona pérdidas en la producción de hasta 25%. En Nayarit, se han determinado, en algunos casos, 100% de los frutos atacados. Los productores de la región, realizan aplicaciones de plaguicidas sin lograr un control efectivo. Con base en lo anterior, se plantearon los siguientes objetivos: determinar el ciclo de vida y hábitos de B. cubensis en guanábana en condiciones de campo y evaluación de... |
| Tipo: Tesis |
Palavras-chave: Bephratelloides cubensis; Guanábana; Biología; Control; Doctorado; Entomología y Acarología; Soursop; Biology; Control. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1470 |
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| Araujo,Renato Braz de; Garutti,Valdener. |
| The reproductive biology of Aspidoras fuscoguttatus Nijssen & Isbrücker, 1976 from a stream in São José do Rio Preto, northwestern São Paulo State, Brazil, was monthly investigated in the period of August 1999 to July 2000. Measurements of total length, body weight, gonadal weight and macroscopic assessment of gonadal maturation were performed. Environmental parameters were considered in order to verify associations with the reproductive period. Populational structure showed total length amplitude between 14.2 and 50.8 mm. Pronounced sexual dimorphism was verified. The largest mean values of gonadosomatic relation for females coincided with the rainy season (November to March). Mean length at first sexual maturity was different for males (30.5 mm)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biology; Aspidoras; Callichthyidae; Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400011 |
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| Veregue,Angela Maria Louzada; Orsi,Mário Luís. |
| Some aspects of the reproductive cycle of female "lambari", Astyanax scabripinnis paranae (Eigenmann, 1927) were studied. The specimens were collected in intervals of fifteen days, from September 1979, until November 1980, in the Marrecas creek (Irerê and Paiquerê districts), Londrina, Paraná, Brazil. The maturity scale was characterized in five stages: immature, maturation, spawning, spent, and resting, which was established by the gonad-somatic relation and the ovary morphology and microscopic aspects. The maturation curve and distribution of maturity stages show that the period of reproduction is very long; spawning extended from July to March. The gonad cycle is related to seasons: maturation occurs chiefly in the winter months, spawning specimens are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Astyanax scabripinnis; Characidae; Biology; Reproduction; Tibagi river. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000100012 |
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| Auad,Alexander Machado; Moraes,Jair Campos de. |
| The aphid Uroleucon ambrosiae (Thomas) is considered a pest of hidroponically-grown lettuce, but basic and applied information on its control are scarce in Brazil. The aim of this study was to determine the effect of different temperatures on biological aspects and life history of U. ambrosiae (Thomas) developing on hydroponic lettuce (Lactuca sativa L.) crop. Newly emerged nymphs were placed on 4-cm discs of hydroponic lettuce, var. Verônica, which were maintained on 5-cm Petri dishes, at temperatures of 15, 20 and 25ºC and 14 h photophase, and inside a greenhouse, within micro-cages at room temperature. The duration of development in all nymphal stages varied inversely to temperature. Nymphs maintained at 20ºC and 25ºC, had similar development period.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Aphids; Biology; Climatic factors. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400008 |
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| Pereira,Alex Furquim; Rodrigues,Sérgio Roberto; Morón,Miguel Angel. |
| Biological aspects of Leucothyreus alvarengai Frey and Leucothyreus aff. semipruinosus Ohaus (Coleoptera, Melolonthidae, Rutelinae) in crop succession at central Brazil. Beetles of the family Melolonthidae make up a large group and some species are considered pests of planted crops. Little information is available on the basic biological aspects of the genus Leucothyreus, such as association with cultivated crops and their occurrence periods. Therefore studies were developed in soybean and corn crops in Tangará da Serra, Mato Grosso, Brazil, with the objective of studying the occurrence and biological aspects of Leucothyreus alvarengai Frey and Leucothyreus aff. semipruinosus Ohaus. For acquisition of immature specimens of both species, in April 2011... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biology; Geniatini; Insecta; White grub. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000300011 |
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| Barbosa,Leonardo Rodrigues; Freitas,Sérgio de; Auad,Alexander Machado. |
| A knowledge of the behavior and biological aspects of natural enemies is extremely important for the establishment of biological control programs. Biological aspects of the larvae, pre-pupae and pupae of the predator Ceraeochrysa everes (Banks) were studied. Larvae of the adult F1 generation were reared in the laboratory (25 ± 2°C, 65 ± 10 % RH and 14h photophase) on eggs of the Angoumois grain moth Sitotroga cerealella (Olivier). The duration and viability of the embryonic period, development of the immature stages and egg-adult period were evaluated. The mean embryonic period was 5.0 days, while the mean durations of the first, second and third instars were: 5.1 ± 0.03; 4.3 ± 0.05 and 4.5 ± 0.05 days, respectively, with viability exceeding 90%. Duration... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Insecta; Predator; Biology; Green lacewing. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000300025 |
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| Araujo,Elton Lucio; Nogueira,Carlos Henrique Feitosa; Menezes Netto,Alexandre Carlos; Bezerra,Carlos Eduardo Souza. |
| The leafminer Liriomyza sativae Blanchard is an important insect pest on melon crops in Brazil. However, the information about its biology on melon (Cucumis melo L.) is scarce. Therefore, the aim of this research was to know some biological aspects of this pest, reared on melon plants, under laboratory conditions at 25°C. Our results showed that the biological cycle of L. sativae lasts 15.9±0.04 days (egg-adult), namely: egg (2.7±0.01 days), larva (4.1±0.03 days) and pupa (9.1±0.03 days). The sex ratio is 0.51 and the females live (19.3±1.09 days) longer than males (16.2±0.96 days). These results can help in the integrated management of L. sativae on melon crops and improve the systems for rearing this leafminer in laboratory. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Insect pest; Cucurbitaceae; Biology; Semiarid. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000400003 |
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| Derbali, Abdelkarim. |
| The pearl oyster Pinctada radiata and the cockle Cerastoderma glaucum are among the most abundant bivalve molluscs in southern Tunisian waters. These species are not currently subject to any investigation despite their important economic value in the world. For this reason, their biological parameters, their spatial distribution and their stock assessment were undertaken in the Gulf of Gabes. The reproductive cycle was studied in relation to variations of the environment parameters. The specimens were collected monthly during one year (2007) in sites of El Kraten and El Jorf (Kerkennah Islands) for the first species and sites of Sidi Mansour and El Hicha (North of Sfax and Gabes) for the second. An intraspecific polymorphism biometric trait for P. radiata... |
| Tipo: Theses and Dissertations |
Palavras-chave: Abundance; Biology; Shellfish. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/5404 |
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| Le Foll, Didier. |
| The aim of this work, which was done as a Doctorate of Philosophy (Phd), was to collect the information necessary to help improve the management of the western Channel spider crab stock. The fîrst section présents the main aspects of spider crab population biology. As well as contributing our own results on spider crab habitat, stock density, démographie structure, growth and mortality estimâtes, migrations, reproduction and recruitment, a synthesis is included of the existing scientific literature. The second section on exploitation covers various features of the fishery : its history, fishing methods, fleet structure, spatial and seasonal distribution of fishing efforts in 1986, trends in the landings, fishing effort and catch per unit effort,... |
| Tipo: Text |
Palavras-chave: Exploitation; Biologie; Manche; Maja squinado; Araignée; Exploitation; Biology; English Channel; Maja squinado; Spider crab. |
| Ano: 1993 |
URL: https://archimer.ifremer.fr/doc/1993/rapport-638.pdf |
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| Rodrigues,Sérgio Roberto; Garcia,Felix Placencia; Falco,Josani Silva; Morón,Miguel Angel. |
| Abstract Larvae, pupae and adults of Gymnetis rufilateris (Illiger, 1800) (Coleoptera: Cetoniidae: Cetoniinae) were collected in the municipality of Rochedo, Mato Grosso do Sul State. Studies on biology and morphology were conducted at the Laboratory of Entomology of the Universidade Estadual de Mato Grosso do Sul in Aquidauana, Mato Grosso do Sul, Brazil. Females of couples formed in the laboratory oviposited and allowed the biology studies. The eggs lasted for 15.5 days. Larvae of the 1st, 2nd and 3rd instars lasted 13.5, 30.6 and 113.1 days, respectively. The pupal period lasted 12.8 days. The egg-to-adult period lasts 186.8 days. The larvae fed on decomposing feces of poultry. In the laboratory, adults fed on ripe banana (Musa sp.) (Musaceae).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biology; Behavior; Gymnetini; Immature stages; Morphology. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000300205 |
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| Registros recuperados: 206 | |
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