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| Vieira,Alexsandro Santana; Antonialli-Junior,William Fernando; Fernandes,Wedson Desidério. |
| Para descrever o padrão de construção e ocupação dos ninhos de Ectatomma vizottoi, foram escavados oito ninhos durante o período de novembro de 2004 a agosto de 2006, em Dourados-MS. Os orifícios de entrada ou saída dos ninhos desta espécie possuem formato elipsóide, com acesso a um túnel alargado, similar a uma antecâmara, a qual é conectada a câmaras mais profundas do ninho. Os ninhos podem alcançar até 360,0 cm de profundidade, e apresentam de três a dez câmaras. São construídos independentemente de raízes de plantas, e o solo de seus túneis e câmaras é compactado, apresentando compartimentos específicos para depósitos de detritos da colônia. O aumento da densidade de formigas conduz a um aumento do número de câmaras, bem como da profundidade do ninho,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ectatomminae; Estrutura de ninhos; População. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262007000400014 |
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| Mussury,Rosilda Mara; Fernandes,Wedson Desidério. |
| The occurrence of Diaretiella rapae parasitising Lipaphis erysimi and Brevicoryne brassicae in canola field (Brassica napus) was evaluated through two sample methods in Dourados-MS. The methods, used weekly, were: entomologic sweep net and plants sacking. The aphids population was observed from initial to the senescence plant development. Aphids were more abundant during the flowering phase, and they were usually located in the stems of the inflorescence and development fruits. In this phase the largest parasitism level for D. rapae (89,7%) occurred. The sample method with a sweep net captured significantly (t=4,484, P <= 0,01) more D. rapae while sacking method captured more parasitise aphids (t=2,199 with P <= 0,05) and active aphids (t=3,513, P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canola; Brassica napus; Diaretiella rapae; Parasitism; Lipaphis erysimi; Brevicoryne brassicae. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100007 |
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| Lange,Denise; Fernandes,Wedson Desidério; Raizer,Josué; Faccenda,Odival. |
| This study had the objective of assessing the differences in foraging activity of the predacious ants between two areas, one conventional and other with no-till agriculture systems. The research was conducted in two contiguous 1.5 ha plots in Dourados MS, Brazil, from February 2001 to December 2003. Each plot received 750 baits (Nasutitermes termites), 425 at daylight and 325 at night. The termites were placed on the filter paper, on the ground, and ant attack was monitored for 15 min, until removed. Sixteen ant species were found in the no-till system and nine in the conventional system. Baits removed from no-till were significantly higher than the conventional plots and were influenced by the sampling time, at day or night. The seasons of the year did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroecosystems; Biological control; Community structure; Soil tillage; Species richness; Predation effects. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000600015 |
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| Mussury,Rosilda Mara; Fernandes,Wedson Desidério. |
| Studies of the floral biology of canola were accomplished with the objective of enlarging the system and reproductive strategies knowledge of its CTC-4 cultivar in Dourados, Centerwest, Brazil. Brassica napus is self pollinated, presenting however, many resources for the allogamy accomplishment, e.g., abundant pollen, nectar and scent production. The smaller anther were responsible for the production of fruit with smaller and less growth seeds, when compared to the autogamy, autopollination and cross pollination tests. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica napus; Canola; Floral biology. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100014 |
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| Soares,Stela de Almeida; Suarez,Yzel Rondon; Fernandes,Wedson Desidério; Tenório,Patrícia Mara Soares; Delabie,Jacques Hubert Charles; Antonialli-Junior,William Fernando. |
| Temporal variation in the composition of ant assemblages (Hymenoptera, Formicidae) on trees in the Pantanal floodplain, Mato Grosso do Sul, Brazil. In this paper we investigate how seasonal flooding influences the composition of assemblages of ants foraging on trees in the Pantanal of Mato Grosso do Sul. During the flood in the Pantanal, a large area is covered by floods that are the main forces that regulate the pattern of diversity in these areas. However, the effects of such natural disturbances in the ant communities are poorly known. In this sense, the objective of this study was to evaluate the effect of temporal variation in assemblages of ants foraging on trees in the Pantanal of Miranda. Samples were collected during a year in two adjacent areas,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Flood and non-flood season; Insecta; Richness; Species composition. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000100013 |
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