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| Registros recuperados: 206 | |
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| Gondim Junior,Manoel Guedes Corrêa; Barros,Reginaldo; Silva,Fernando Rodrigues da; Vasconcelos,Geraldo José Nascimento de. |
| Clitoria fairchildiana (Howard) is a tree largely distributed in Brazil, used for urban arborization. In April 2001, the psyllid Euphalerus clitoriae Burckhardt & Guajará was reported on this plant in the metropolitan areas of Recife, PE, Brazil. This report records the occurrence of E. clitoriae and studies some of its biological aspects in this area. With this purpose, C. fairchildiana leaves were sampled weekly, and E. clitoriae nymphs as well as Aprostocetus sp. larvae and nymphs were collected and counted. The E. clitoriae population ranged from 2 to 90 nymphs per leaflet. The Aprostocetus sp. percentage of parasitism ranged from 3 to 24%. The frequency curve for pygidium width ranged from 120 to 140; 200 to 240; 300 to 380; 460 to 580, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euphalerus clitoriae; Psyllidae; Biology; Biological control; Natural enemies. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300012 |
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| Marilene,Fancelli; Vendramim,José Djair. |
| Whiteflies are phytophagous insects, whose nymphs and adults suck the phloem sap, causing direct damage due to host plant weakness. In tomato (Lycopersicon spp.) crops, they are important vectors of limiting fitoviruses. The objective of this study was to determine the effects of Lycopersicon spp. genotypes on Bemisia tabaci (Gennadius, 1889) biotype B development under greenhouse conditions. The evaluated genotypes were LA462 (L. peruvianum), LA716 (L. pennellii), LA1584 (L. pimpinellifolium), LA1609 (L. peruvianum), LA1739 (L. hirsutum), P25 (L. esculentum), PI134417 (L. hirsutum f. glabratum) and Santa Clara (L. esculentum). LA716 was non-preferred for oviposition by the whitefly, which suggests an antixenotic effect. LA1584 showed an antibiotic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bemisia argentifolii; Aleyrodidae; Whitefly; Biology; Tomato. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000400007 |
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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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| Cunha e Silva,Sandra L. da; Milward-de-Azevedo,Eliane M. |
| The influence of a diet based on putrid horse meat over the post-embryonic development of Cochliomyia macellaria (Fabricius, 1775) under controlled conditions (UR 65 10% and 14 hours of photophase) was compared with the results obtained using a meat broth diet to which other sources of animal and vegetable protein were added. The flies were maintained at 30ºC, from egg until mature larvae spontaneously abandoned the diet. They were then transfered to a climatized chamber at 27ºC. The larvae and pupae viability and the weight of the mature larvae were significantly inferior, when a diet based on meat broth was used, even though the larvae period was significantly increased with this diet. This type of diet did not charge the time of development of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Blowfly diet; Biology; Blowfly. |
| Ano: 1994 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400010 |
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| Almeida,Marcelo Nocelle de; Bessa,Elisabeth Cristina de Almeida. |
| Biological aspects of Bradybaena similaris (Férussac, 1821) were studied, such as: onset of sexual maturity, occurrence of self-fertilization, oviposition, incubation period, eclosion rate and shell length measurement at different stages of development. It was noted that in isolated B. similaris the minimum and maximum time for reaching sexual maturity were 109 and 180 days, respectively. When kept in groups, the minimum time was 78 days. The occurrence of self-fertilization was observed in 18.4% of specimens. The total number of eggs per oviposition varied from one to 38 (average: 3,5 ± 7,15), the total number of eggs per mollusc varied from one to 39 (average: 7,0 ± 10,21) and the total number of oviposition per mollusc varied form one to six (averege:... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bradybaena similaris; Biology; Growth; Reproduction. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400010 |
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| Buzzi,Zundir José; Miyazaki,Rosina D.. |
| Adult, larva and pupa of Calyplocephala paralutea, a new species of Cassidinae, Spilophorini (Coleoptera, Chrysomelidae), from Porto Platon, Amapá, Brazil, is described. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calyplocephala paralutea; Sp.n; Chrysomelidae; Biology. |
| Ano: 1992 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000100017 |
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| Almeida,Marcelo Nocelle de; Bessa,Elisabeth Cristina de Almeida. |
| Biological aspects of Leptinaria unlamellata (d'Orbigny, 1835) were studied, such as: onset of sexual maturity, occurrence of self-fertilization and shell length measurement at different stages of development. In isolated specimens of L. unilamellata, sexual maturity was reached at 74 days (minimum time) and 104 days (maximum time). For the grouped specimens, the minimum time was 71 days. The occurrence of self-fertilization was observed in both species, 100% of specimens. The total numberof young per birth varied from one to 22 (average: 7,35 ± 5,78), the total number of offsprings per mollusc varied from two to eight (average: 4,1 ± 1,41) and total number of young per mollusc varied from five to 46 (average: 30,21 ± 8,08). As to the shell length in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leptinaria unilamellata; Biology; Growth; Reproduction. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400009 |
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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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| Registros recuperados: 206 | |
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