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| Registros recuperados: 30 | |
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| Zuim, Vitor; Rodrigues, Hígor de Souza; Pratissoli, Dirceu; Torres, Jorge Braz; Fragoso, Débora Ferreira Melo; Bueno, Regiane Cristina Oliveira de Freitas. |
| This study evaluated the parasitism of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on eggs of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) at different ages and densities. The rates of parasitism and emergence, the number of parasitoids emerged per egg and sex ratio of offspring were evaluated in both experiments. Eggs of H. armigera up to 36 hours provided greater parasitism and emergence of adults compared to eggs up to 60 hours old. The number of parasitoids, which emerged per host egg, was greater than one and the sex ratio remained around 80% of females, regardless of the egg development stage. Females of T. pretiosum responded with superior rates of parasitism, emergence and number of parasitoids per egg at the densities of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitossanidade; Parasitologia Agrícola Biological control; Exotic pest; Egg parasitoid; Host-parasitoid interaction; Noctuidae. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34943 |
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| Soares, Marcus Alvarenga; Leite, Germano Leão Demolin; Zanuncio, José Cola; Ferreira, Cleidson Soares; Rocha, Silma Leite; Sá, Veríssimo Gibran Mendes de. |
| Cassava is the sixth most important crop in the world, and it is attacked by many pests, such as Erinnyis ello (L.) (Lepidoptera: Sphingidae). This lepidopteran pest has natural enemies that can efficiently control its population, such as Trichogramma spp. (Hymenoptera: Trichogrammatidae). The objective of this research was to assess the flight capacity, parasitism and emergence of Trichogramma pretiosum, T. marandobai and T. demoraesi and to select the most efficient species among them for biological control programs. The flight capacity of these species was assessed in test units consisting of a plastic PVC cylinder with a rigid, transparent plastic circle on the upper portion of the cylinder and an extruded polystyrene disk to close the bottom of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.02.02-8 Lepidoptera; Egg parasitoid; Erinnyis ello Entomologia Agrícola. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17744 |
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| Dias-Pini,Nivia da Silva; Broglio,Sônia Maria Forti; Costa,Simone da Silva; Santos,Jakeline Maria dos; Guzzo,Elio Cesar. |
| Diatraea flavipennella (Box) (Lepidoptera, Crambidae) is one of the most destructive pests in sugarcane plantations in the Northeast Region of Brazil. Developmental characteristics and parasitism potential of the egg parasitoids Telenomus alecto Crawford (Hymenoptera, Scelionidae) and Trichogramma galloi Zucchi (Hymenoptera, Trichogrammatidae) were compared with the aim of selecting a suitable species for biological control of D. flavipennella. Both T. alecto and T. galloi developed well and were readily adapted to D. flavipennella eggs as host. Although, T. galloi presented higher viability, with more adults emerging per host egg and higher sex ratio, the developmental period (egg-adult) was shorter in T. alecto and female longevity was extended. In... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Biological control; Egg parasitoid; Parasitism capacity. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000400020 |
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| Rocha,Luciane da; Kolberg,Roberta; Mendonça Jr.,Milton de S.; Redaelli,Luiza R.. |
| To evaluate the effect of egg age of Spartocera dentiventris (Berg) on the parasitism by Gryon gallardoi (Brethes), groups of 12 eggs of 2, 3, 4, 5, 6, 7, 8, and 12 days old were exposed to one female of G. gallardoi on a test tube, with the wasp observed for 2h subsequently. Later, the eggs were individualised and incubated (25 ± 1°C; 12h photoperiod) until adult emergence. To identify the preferred age, groups of 12 eggs of 1, 3, 5, 7 and 12 days of age were simultaneously exposed to a parasitoid female on an arena for 2h. These groups were also individualised and incubated until parasitism was confirmed. On all ages tested parasitism was at about 88.5 ± 2.64%, with a reduction in adult parasitoid emergence with age increasing (P < 0.01). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Egg parasitoid; Host-parasitoid interaction. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000500013 |
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| Silva,Cleonor Cavalcante; Laumann,Raul Alberto; Blassioli,Maria Carolina; Pareja,Martin; Borges,Miguel. |
| The objective of this work was to improve the mass rearing technique of Euschistus heros in laboratory. Nymphs and adults were reared at densities 100, 200, 300 and 400 eggs per Petri dish (9 cm diameter), and at 50, 100, 150 and 200 couples per rearing cages (900 mL), respectively. Survival rate of immature stages and survivorship and reproduction of adults were determinated. Survivorship of nymph to adult was the highest (89%) at density 100 eggs per dish. Adult survivorship was independent of density, and 100 couples per cage were the best to improve quality of the produced progeny. In these conditions, fecundity was 160.8±9.28 eggs per female, and a total of 8,950±456 eggs per cage per month was produced. Two hundred couples per cage showed a negative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Density; Egg parasitoid; Neotropical brown stink bug. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000500004 |
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| Milanez,André Malacarne; Carvalho,José Romário de; Lima,Victor Luiz Souza; Pratissoli,Dirceu. |
| Abstract: The objective of this work was to determine the functional response of the parasitoid Trichogramma pretiosum on Trichoplusia ni eggs at different temperatures (20, 25, and 30ºC) and egg densities (5, 10, 15, 20, 25, and 30 eggs). The logistic regression showed a type-II functional response for all temperatures. The search efficiency of T. pretiosum was reported as 0.049±0.0019, 0.069±0.0042 and 0.068±0.0033 per hour, and the estimated handling times were 1.82±0.0424, 1.69±0.0398, and 1.54±0.0498 hour at 20, 25 and 30ºC, respectively. Females of Trichogramma pretiosum show greater efficiency at 30ºC and a type-II functional response. The parasitism rate decreases, when host density increases. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavioral response; Biological control; Egg parasitoid; Noctuidae. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500641 |
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| Polanczyk,RA; Barbosa,WF; Celestino,FN; Pratissoli,D; Holtz,AM; Milanez,AM; Cocheto,JG; Silva,AF da. |
| The effects of the egg density of Diaphania hyalinata (L.) on several biological parameters of Trichogramma exiguum Pinto & Platner and T. pretiosum Riley were investigated. For that, 24h-old egg masses were isolated in glass tubes (15 replicates; 1 egg mass = 1 replicate), and offered to parasitization by a newly-emerged female of T. pretiosum or T. exiguum 24h at the proportion of one female to 5, 10, 15, 20, 25, 30, 35 and 40 eggs of D. hyalinata. The following parameters were evaluated: number of parasitized eggs, number of individuals per egg, viability and sex ratio. Trichogramma exiguum parasitized more eggs than T. pretiosum when more than 25 eggs were available per female. The percentage of emergence was satisfactory to T. pretiosum in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural enemy; Egg parasitoid; Host and biological aspect. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000200013 |
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| Rocha,Luciane da; Moreira,Gilson R.P.; Redaelli,Luiza R.. |
| With the aid of scanning electron microscopy, the external morphology and distribution of the antennal sensilla were described for females of Gryon gallardoi (Bréthes), an egg-parasitoid of coreids. The geniculated and clavated antennae are composed of 12 antennomeres. Along the flagelum we registered dorsal glands and seven types of sensilla: papillary, chaetica of two sizes - long and short types, styloconic grooved-peg, sickle-shaped and trichodea with numerical and spatial variation among the flagellomeres. Functional aspects of the sensilla are discussed in the context of G. gallardoi antennal drumming behavior. Thus, the determination and the description pattern of antennal sensilla in G. gallardoi, in the present study, is an advance regarding the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ultrastructure; Host selection; Egg parasitoid. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000500013 |
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| Silva,Gabriela Vieira; Pasini,Amarildo; Bueno,Adeney de Freitas; Bortolotto,Orcial Ceolin; Barbosa,Gustavo Caselato; Cruz,Ynaiara Kristhine Stopa. |
| No impact of Bt soybean that express Cry1Ac protein on biological traits of Euschistus heros (Hemiptera, Pentatomidae) and its egg parasitoid Telenomus podisi (Hymenoptera, Platygastridae). Biological traits of the stink bug Euschistus heros and its main biological control agent Telenomus podisi were evaluated under controlled environmental conditions (25 ± 2ºC; 60 ± 10% RH; and 14/10 h photoperiod) by placing first instar nymphs into Petri dishes with pods originating from two soybean isolines (Bt-soybean MON 87701 × MON 89788, which expresses the Cry1Ac protein, and its near non-Bt isoline A5547) where they remained until the adult stage. Due to gregarious behavior exhibited by first instar nymphs, they were individualized only when at the second instar.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg parasitoid; Genetically modified organisms (GMO); Natural enemy; Non-target pests; Plant resistance. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000300010 |
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| Registros recuperados: 30 | |
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