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

Pratissoli, Dirceu; Oliveira, Harley Nonato de; Polanczyk, Ricardo Antônio; Holtz, Anderson Mathias; Bueno, Regiane Cristina Oliveira de Freitas; Bueno, Adeney de Freitas; Gonçalvez, José Roberto

doi:10.1590/s1516-89132009000500001

Cited by 14 publications

(12 citation statements)

References 19 publications

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“…The percentage of emerged individuals also did not differ between treatments and was greater than 90%, as have been reported in other studies (Dias et al 2008, Pratissoli et al 2009). …”

supporting

confidence: 86%

“…Parasitism and longevity may interfere with the success of the populations in the field (Thomson and Hoffmann 2002, Bessera et al 2003b, Pratissoli et al 2009), and their reduction may also be caused by other conditions such as food restriction (Hegazi et al 2000, Murta et al 2008. However, in this study, the food resources were not restricted to females, emphasizing the effect of mating on the biological characteristics of this egg parasitoid.…”

Section: Discussionmentioning

confidence: 55%

“…Moreover, individuals with thelytokous and arrhenotokous characteristics may be present in the same population (Stouthamer 1993, Wang andSmith 1996). In arrhenotokous Trichogramma species, mating is an important factor to consider for the successful use of these species in the field, since unfertilized eggs produce male individuals (Pratissoli et al 2009, Farrokhi et al 2010, which can compromise the maintenance of the parasitoid in the field. On the other hand, mating in thelytokous species is not essential to ensure a large number of female descendants, since both fertilized and unfertilized eggs will produce females (Hohmann et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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Does mating interfere in the biological characteristics of a population of Trichogramma pretiosum?

Pratissoli¹,

Kloss²,

Zinger³

et al. 2014

An. Acad. Bras. Ciênc.

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Trichogramma spp. are parasitoids used in the regulation of insect populations that can cause economic damage. In order to ensure good performance, understanding some of their biological characteristics is essential. The objective of this study is to evaluate whether mating interferes with the biological characteristics of a population of Trichogramma pretiosum collected in the field. In all experiments, groups of mated and unmated females were used. We also verified any interference from mating on the biological characteristics of the offspring. We found that mating can alter the parasitism and longevity of genitor females, in addition to changing longevity among the descendants, but once parasitized, the eggs develop normally, showing similar emergence percentage and number of offspring as those from unmated females. In addition, we verified that the population of T. pretiosum collected in the field presented individuals with reproductive thelytokous and arrhenotokous characteristics. This fact highlights the importance of careful investigation on the reproduction mode of populations collected in the field, thus avoiding problems in the effective management of insect populations.

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“…The percentage of emerged individuals also did not differ between treatments and was greater than 90%, as have been reported in other studies (Dias et al 2008, Pratissoli et al 2009). …”

supporting

confidence: 86%

Section: Discussionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

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Does mating interfere in the biological characteristics of a population of Trichogramma pretiosum?

Pratissoli¹,

Kloss²,

Zinger³

et al. 2014

An. Acad. Bras. Ciênc.

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“…Reinforcing such results, Zago et al (2007), studying T. pratissolii, verified an inverse correlation of the parasitism period with the temperature, observing figures between two and 10 days from 18 to 33ºC. Pratissoli et al (2009), in studies with T. acacioi on eggs of A. kuehniella and S. cerealella, found that between 20 and 35ºC, there was variation in the period of parasitism between five and 16 days. Pereira et al (2007) verified an inferior variation on the parasitism period in the same temperature range (nine to 13 days).…”

Section: Resultsmentioning

confidence: 70%

“…Among egg parasitoids, the genus Trichogramma is notable because of its wide geographical distribution and high parasitism capacity on eggs of different species, primarily those in the order Lepidoptera (PRATISSOLI et al, 2002). The success of Trichogramma spp.…”

Section: Introductionmentioning

confidence: 99%

Parasitism capacity of Trichogramma pretiosum on eggs of Trichoplusia ni at different temperatures

et al. 2014

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ABSTRACT. Trichogramma spp. are egg parasitoids of various pest species of Lepidoptera including Trichoplusia ni, an important pest of plants in the genus Brassica. Of the climatic conditions that can impair Trichogramma spp. parasitism capacity, the temperature is critical. Thus, the objective of this research was to evaluate the parasitism capacity of Trichogramma pretiosum on eggs of T. ni at 18, 21, 24, 27, 30, and 33ºC; 70±10% RH; and 12/12 hours photophase (L/D). Fresh eggs of the host moth were offered to T. pretiosum daily. The parasitism rate varied between 8 and 11.4 eggs/female at the temperatures evaluated for the first 24 hours. The highest number of parasitized eggs per female occurred at 24ºC (53.0 parasitized eggs/female). The period of parasitism and the mean longevity of females were inversely related to the temperature. Temperature heavily influences the parasitism rate of T. pretiosum on eggs of T. ni, and the best overall performance of the parasitoid occurs from 24 to 27ºC.

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Augmentative Biological Control as a Workable Strategy Within an Area-Wide Integrated Fruit Fly Management Approach: Case Studies from Mexico and Argentina

Cancino,

Suárez,

Ayala

et al. 2024

Management of Fruit Flies in the Americas

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

Abstract: 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)

Cited by 14 publications

References 19 publications

Does mating interfere in the biological characteristics of a population of Trichogramma pretiosum?

Does mating interfere in the biological characteristics of a population of Trichogramma pretiosum?

<b>Parasitism capacity of <i>Trichogramma pretiosum</i> on eggs of <i>Trichoplusia ni</i> at different temperatures

Augmentative Biological Control as a Workable Strategy Within an Area-Wide Integrated Fruit Fly Management Approach: Case Studies from Mexico and Argentina

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