scholarly journals Parasitism Capacity of Trichogramma pretiosum and Trichogramma acacioi (Hym.: Trichogrammatidae) on eggs of Sitotroga cerealella (Lep.: Gelechiidae)

2008 ◽  
Vol 51 (6) ◽  
pp. 1249-1254 ◽  
Author(s):  
Dirceu Pratissoli ◽  
José Cola Zanuncio ◽  
Ulysses Rodrigues Vianna ◽  
Josimar Souza Andrade ◽  
Fernando Domingo Zinger ◽  
...  
Keyword(s):  
Biological Control ◽  
Sitotroga Cerealella ◽  
Alternative Host ◽  
Trichogramma Pretiosum ◽  
Parasitoid Species ◽  
Control Programs ◽  
Total Parasitism

The objective of this work was to evaluate the parasitism capacity of Trichogramma pretiosum Riley and T. acacioi Brun, Moraes and Soares (Hymenoptera: Trichogrammatidae) in eggs of the alternative host Sitotroga cerealella (Olivier) (Lepidoptera: Gelechiidae) aiming to use both species in biological control programs of Nipteria panacea Tierry-Mieg (Lepidoptera: Geometridae). The parasitism rhythm and total parasitism of these parasitoid species were affected by the temperature with higher values during the first 24 h of their life. Parasitism period was longer for T. pretiosum and T. acacioi at the lowest temperature.

Trichogramma pretiosum parasitism and dispersal capacity: a basis for developing biological control programs for soybean caterpillars

2011 ◽  
Vol 102 (1) ◽  
pp. 1-8 ◽  
Author(s):  
R.C.O. de Freitas Bueno ◽  
J.R.P. Parra ◽  
A. de Freitas Bueno
Keyword(s):  
Biological Control ◽  
Control Program ◽  
Egg Parasitoid ◽  
Anticarsia Gemmatalis ◽  
Trichogramma Pretiosum ◽  
Parasitoid Species ◽  
Dispersal Capacity ◽  
Quadratic Effect ◽  
Control Programs ◽  
The Mean

AbstractIn order to succeed in biological control programs, not only is it crucial to understand the number of natural enemies to be released but also on how many sites per area this releasing must be performed. These variables might differ deeply among egg parasitoid species and crops worked. Therefore, these trials were carried out to evaluate the parasitism (%) in eggs of Anticarsia gemmatalis and Pseudoplusia includens after the release of different densities of the egg parasitoid Trichogramma pretiosum. Field dispersal was also studied, in order to determine appropriate recommendations for the release of this parasitoid in soybean fields. The regression analysis between parasitism (%) and densities of the parasitoid indicated a quadratic effect for both A. gemmatalis and P. includens. The maximum parasitism within 24 h after the release was reached with densities of 25.6 and 51.2 parasitoids per host egg, respectively, for the two pests. Parasitism of T. pretiosum in eggs of P. includens decreased linearly as the distance of the pest eggs from the parasitoid release sites increased. For P. includens, the mean radius of T. pretiosum action and the area of parasitoid dispersal in the soybean crop were 8.01 m and 85.18 m2, respectively. We conclude that for a successful biological control program of lepidopteran pests using T. pretiosum in soybean fields, a density of 25.6 parasitoids per host egg, divided into 117 sites per hectare, should be used.

scholarly journals Thermal requirements of Trichogramma pretiosum and T. acacioi (Hym.: Trichogrammatidae), parasitoids of the avocado defoliator Nipteria panacea (Lep.: Geometridae), in eggs of two alternative hosts

2005 ◽  
Vol 48 (4) ◽  
pp. 523-529 ◽  
Author(s):  
Dirceu Pratissoli ◽  
José Cola Zanuncio ◽  
Ulysses Rodrigues Vianna ◽  
Josimar Souza Andrade ◽  
Tobias Baruc Moreira Pinon ◽  
...  
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Sitotroga Cerealella ◽  
Trichogramma Pretiosum ◽  
Degree Days ◽  
Alternative Hosts ◽  
Control Programs ◽  
Thermal Requirements ◽  
Anagasta Kuehniella ◽  
Lepidoptera Pyralidae

This research studied the thermal requirements of Trichogramma pretiosum and T. acacioi (Hymenoptera: Trichogrammatidae), parasitoids of Nipteria panacea (Lepidoptera: Geometridae), with eggs of the alternative hosts Anagasta kuehniella (Lepidoptera: Pyralidae) and Sitotroga cerealella (Lepidoptera: Gelechiidae) aiming to use these natural enemies in biological control programs of this pest in avocado orchards. T. pretiosum needed 151.83 and 160.04 degree-days, above threshold of 10.70 and 10.75°C, while these values were 158.50 and 155.46 degree-days, above threshold of 10.67 and 10.46°C for T. acacioi when exposed to eggs of A. kuehniella and S. cerealella, respectively.

scholarly journals Biological Control of Tephritid Fruit Flies in the Americas and Hawaii: A Review of the Use of Parasitoids and Predators

Insects ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 662
Author(s):  
Flávio R. M. Garcia ◽  
Sérgio M. Ovruski ◽  
Lorena Suárez ◽  
Jorge Cancino ◽  
Oscar E. Liburd
Keyword(s):  
Biological Control ◽  
Fruit Fly ◽  
Fruit Flies ◽  
Economic Importance ◽  
Parasitoid Species ◽  
Control Programs ◽  
First Time ◽  
Tephritid Fruit Flies

Biological control has been the most commonly researched control tactic within fruit fly management programs. For the first time, a review is carried out covering parasitoids and predators of fruit flies (Tephritidae) from the Americas and Hawaii, presenting the main biological control programs in this region. In this work, 31 species of fruit flies of economic importance are considered in the genera Anastrepha (11), Rhagoletis (14), Bactrocera (4), Ceratitis (1), and Zeugodacus (1). In this study, a total of 79 parasitoid species of fruit flies of economic importance are listed and, from these, 50 are native and 29 are introduced. A total of 56 species of fruit fly predators occur in the Americas and Hawaii.

scholarly journals Report of A Larval Parasitoid of Tuta Absoluta (Meyrick) (Lepidoptera: Gelechiidae) from Iran

2014 ◽  
Vol 54 (3) ◽  
pp. 306-307 ◽  
Author(s):  
Fariba Sohrabi ◽  
Hossein Lotfalizadeh ◽  
Hoda Salehipour
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Tuta Absoluta ◽  
Parasitoid Species ◽  
Tomato Leafminer ◽  
Control Programs ◽  
Larval Parasitoid ◽  
The Family ◽  
Introduced Pest ◽  
First Time

Abstract The tomato leafminer Tuta absoluta (Meyrick) is one of the most devastating pests of greenhouse and outdoor tomato crops. Since it is a newly introduced pest in Iran, there is an important need to search for its natural enemies. In the course of a survey on the natural enemies of this pest, samplings were carried out in tomato greenhouses heavily infested with the tomato leafminer, in the Borazjan region of the Bushehr province in Iran. Leaves with mines were reared in the laboratory until emergence of parasitoids. A single parasitoid species of the family Eulophidae was reared and identified as Neochrysocharis formosus (Westwood 1833). This species is reported for the first time on the tomato leafminer in Iran. Such information may help in developing biological control programs to control this serious pest.

scholarly journals Predators impairing the natural biological control of parasitoids

2000 ◽  
Vol 29 (3) ◽  
pp. 507-514 ◽  
Author(s):  
Ronaldo Reis Jr ◽  
Og De Souza ◽  
Evaldo F. Vilela
Keyword(s):  
Biological Control ◽  
Food Web ◽  
Natural Enemies ◽  
Leaf Miner ◽  
Parasitoid Species ◽  
Coffee Plantation ◽  
Wasp Species ◽  
Control Programs ◽  
Food Web Interactions ◽  
Coffee Leaf Miner

A well known case of ineffective natural biological control: the puzzling coexistence of the coffee leaf miner, Leucoptera coffeellum (Guérin-Mèneville), and its natural enemies was analyzed. Despite being a suitable prey to eight parasitoid species and three wasp species, all occurring simultaneously, the coffee leaf miner too often presents populations far above the damaging level for the coffee plantation. It is demonstrated that predatory wasps and parasitoids interact negatively, possibly because predatory wasps kill parasitized miner's larvae. In doing so, predatory wasps indirectly kill parasitoids, thereby impairing the efficacy of the natural biological control. It is warned that biological control programs should be based on knowledge of food web interactions, rather than simply on strategies involving introduction of exotic natural enemies.

scholarly journals Selectivity of Insecticides Against Adult Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on Cassava

2018 ◽  
Vol 11 (1) ◽  
pp. 546
Author(s):  
Elidiane Feltrin-Campos ◽  
Rudiney Rigenberg ◽  
Geraldo Andrade Carvalho ◽  
Daniele Fabiana Glaeser ◽  
Harley Nonato de Oliveira
Keyword(s):  
Biological Control ◽  
Treatment Group ◽  
Bacillus Thuringiensis ◽  
Mortality Rates ◽  
International Organization ◽  
Field Conditions ◽  
Trichogramma Pretiosum ◽  
Parasitoid Species ◽  
Future Studies ◽  
F1 Generation

In this study, the effects of various chemical and biological insecticides on adults of the parasitoid species Trichogramma pretiosum (Riley) were examined in cassava. The chemical insecticides zeta-cypermethrin, lufenuron + profenofós, imidacloprid, thiamethoxam, and teflubenzuron and the biological agents Bacillus thuringiensis and Baculovirus erinnyis were evaluated. For each treatment group, the effects were evaluated using T. pretiosum mortality rates, longevity of females, the number of eggs parasitized by the F0 generation, and number of emergent F1 parasitoids. The insecticides were classified using the International Organization for Biological Control categories. The tested insecticides had little effect on longevity and survival of adults, but all affected parasitism (F0) and were moderately harmful to the parasitoid. In relation to the emergent (F1) generation, the pesticides were either harmless or slightly harmful, except for zeta-cypermethrin which was classified as harmful with a 100% reduction in parasitoid emergence. The results indicate that the tested insecticides were moderately harmful to T. pretiosum in the laboratory; future studies will examine the effects of the insecticides under semi-field and field conditions to confirm their toxicity.

scholarly journals Adult feeding and mating effects on the biological potential and parasitism of Trichogramma pretiosum and T. acacioi (Hym.: Trichogrammatidae)

2009 ◽  
Vol 52 (5) ◽  
pp. 1057-1062 ◽  
Author(s):  
Dirceu Pratissoli ◽  
Harley Nonato de Oliveira ◽  
Ricardo Antonio Polanczyk ◽  
Anderson Mathias Holtz ◽  
Regiane Cristina Oliveira de Freitas Bueno ◽  
...  
Keyword(s):  
Biological Control ◽  
Egg Viability ◽  
Trichogramma Pretiosum ◽  
Control Programs ◽  
Trichogramma Species ◽  
Biological Potential ◽  
Adult Feeding

This work was carried out to study the effects of adult feeding and mating on the biological potential and parasitism of Trichogramma pretiosum and T. acacioi (Hymenoptera: Trichogrammatidae) to improve their use in biological control programs. Both species presented higher parasitism and longevity whenever adults were fed. Fed and unmated T. pretiosum females led to low parasitism whereas T. acacioi females did not present parasitism whatsoever. Egg viability of T. pretiosum was similar for fed and mated individuals, but T acacioi showed lower values for this parameter when unfed and without mating. Unmated females produced only males while mated ones had more than 60% female descendents for both Trichogramma species. Therefore, mated and fed female parasitoids should be released in crop systems to increase the biological control.

scholarly journals ¿MULTIPLICAR Tetrastichus howardi (HYMENOPTERA: EULOPHIDAE) EN LA ORUGA DE LA SEDA AFECTA SU BIOLOGÍA?

2015 ◽  
Vol 21 (1) ◽  
Author(s):  
Nahara Gabriela Piñeyro ◽  
Fabricio Fagundes Pereira ◽  
Felipe Luis Gomes Borges ◽  
Camila Rossoni ◽  
Antonio De Souza Silva ◽  
...  
Keyword(s):  
Biological Control ◽  
Bombyx Mori ◽  
Reproductive Performance ◽  
Natural Host ◽  
Biological Characteristics ◽  
Alternative Host ◽  
Alternative Hosts ◽  
Control Programs ◽  
Diatraea Saccharalis ◽  
Three Generations

<p class="p1"><strong>RESUMEN</strong></p><p class="p2">La multiplicación sucesiva de parasitoides en hospederos alternativos, puede afectar las características biológicas y comprometer los sistemas de cría masiva de estos. El objetivo de este trabajo fue evaluar la multiplicación de Tetrastichus howardi (Olliff, 1893) (Hymenoptera: Eulophidae) en pupas del hospedero alternativo Bombyx mori (Linnaeus, 1758) (Lepidoptera: Bombycidae), durante tres generaciones. Y si eso afecta su desempeño reproductivo, cuando se cría, posteriormente, en pupas del hospedero natural Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae). Las informaciones obtenidas en este estudio pueden mejorar y facilitar el control biológico de plagas, principalmente, con la utilización de parasitoides, debido a que T. howardi parasita y se desarrolla en pupas de B. mori. De forma general, la multiplicación de T. howardi durante tres generaciones en pupas del hospedero alternativo B. mori no compromete las características biológicas de este parasitoide cuando se multiplica en su hospedero natural D. saccharalis a los efectos de su utilización en programas de control biológico.</p><p class="p1"><strong>ABSTRACT</strong></p><p class="p2">The successive multiplication of parasitoids in alternative hosts can affect the biological characteristics and compromise the systems for massive rearing. The aim of this study was to evaluate if the multiplication of Tetrastichus howardi (Olliff, 1893) (Hymenoptera: Eulophidae) in pupae of the alternative host Bombyx mori (Linnaeus, 1758) (Lepidoptera: Bombycidae) for three generations, affects its reproductive performance, when are reared, then in pupae of the natural host Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae). The information obtained in this study can improve and facilitate the biological control of pests, mainly with the use of parasitoids, due to the fact that T. howardi parasite and develops into pupae of B. mori. In general, the multiplication of T. howardi for three generations in the alternative host pupae of B. mori does not compromise the biological characteristics of this parasitoid when multiplied in its natural host D. saccharalis to the effects of their use in biological control programs.</p><p class="p2"> </p>

scholarly journals Fertility life table of Trichogramma pretiosum and Trichogramma acacioi on eggs of Anagasta kuehniella at different temperatures

2004 ◽  
Vol 39 (2) ◽  
pp. 193-196 ◽  
Author(s):  
Dirceu Pratissoli ◽  
José Cola Zanuncio ◽  
Ulysses Rodrigues Vianna ◽  
Josimar de Souza Andrade ◽  
Edylene Marota Guimarães ◽  
...  
Keyword(s):  
Biological Control ◽  
Life Table ◽  
Reproductive Potential ◽  
The State ◽  
Trichogramma Pretiosum ◽  
Espírito Santo ◽  
Control Programs ◽  
Anagasta Kuehniella ◽  
Different Temperatures ◽  
Espirito Santo

Species of the Trichogramma genus are among the most important ones for biological control. The objective of this research was to evaluate parasitism potential of two species of Trichogramma on eggs of Anagasta kuheniella through life fertility table, at temperatures between 15ºC and 35ºC. These species were collected in the State of Espírito Santo parasitising eggs of the avocado defoliator Nipteria panacea. Trichogramma pretiosum and T. acacioi showed adequate reproductive potential between 15ºC and 35ºC which indicates possibilities of using them in biological control programs in avocado plantations.

scholarly journals Biological characteristics of Trichogramma pretiosum and Trichogramma acacioi (Hym.: Trichogrammatidae), parasitoids of the avocado defoliator Nipteria panacea (Lep.: Geometridae), on eggs of Anagasta kuehniella (Lep.: Pyralidae)

2005 ◽  
Vol 48 (1) ◽  
pp. 7-13 ◽  
Author(s):  
Dirceu Pratissoli ◽  
José Cola Zanuncio ◽  
Ulysses Rodrigues Vianna ◽  
Josimar Souza Andrade ◽  
Luiz Carlos Marozzi Zanotti ◽  
...  
Keyword(s):  
Biological Control ◽  
Development Rate ◽  
Quadratic Model ◽  
Extreme Temperatures ◽  
Alternative Host ◽  
Trichogramma Pretiosum ◽  
Anagasta Kuehniella ◽  
Cubic Model ◽  
Lepidoptera Pyralidae ◽  
Number Of Individuals

The objective of this investigation was to study Trichogramma pretiosum and T. acacioi (Hymenoptera: Trichogrammatidae), parasitoids of the avocado defoliator Nipteria panacea (Lepidoptera: Geometridae) on the eggs of the alternative host Anagasta kuehniella (Lepidoptera: Pyralidae) aiming to use them for biological control of this pest in avocado orchards. The cubic model presented better adjustment for duration of the life cycle of T. pretiosum and T. acacioi with the host A. kuehniella which shows that development rate of these species increases with temperature within the range tested. The number of individuals of both Trichogramma species emerged per egg from this host was higher than one. The quadratic model was significant for viability of T. pretiosum and T. acacioi. This parameter was more affected by extreme temperatures and higher emergence rates of adults of both parasitoids species occurred at temperatures of 20, 25 and 30°C.

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