Temperature-dependent differences in biological traits between two strains of Trichogramma cacoeciae (Hymenoptera: Trichogrammatidae)

Pizzol, Jeannine; Pintureau, Bernard; Khoualdia, O.; Desneux, Nicolas

doi:10.1007/s10340-010-0327-0

Cited by 75 publications

(43 citation statements)

References 27 publications

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“…Indeed, parasitoid effectiveness varies largely according to species (and even strains of one species) (Klug and Meyhöfer 2009;Tabone et al 2010) or climatic conditions (Smith 1996). Abiotic factors can affect multiple biological traits of these parasitoids (Scott et al 1997;Pratissoli et al 2005;Oliveira et al 2007;Bueno et al 2008), and temperature, in particular, influences development rate, parasitism rate, sex ratio and longevity (Hoffmann and Hewa-Kapuge 2000;Pizzol et al 2010).…”

Section: Introductionmentioning

confidence: 98%

Performance of four Trichogramma species (Hymenoptera: Trichogrammatidae) as biocontrol agents of Heliothis virescens (Lepidoptera: Noctuidae) under various temperature regimes

et al. 2011

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Trichogramma spp. are major parasitoids of lepidopteran pest eggs, but there is large variation in efficacy toward a given pest among the numerous described Trichogramma species. It is important to select the Trichogramma species that most effectively parasitize and develop in target pest eggs for biological control. In this context, Trichogramma pretiosum, T. exiguum, T. atopovirilia and T. acacioi were studied in Heliothis virescens eggs under different thermal conditions. The parasitoids were reared at constant temperatures of 20, 25 and 30°C and tested at these respective temperatures, while parasitoids reared at 25°C were also tested at 20 and 30°C, for a total of 20 species-temperature combinations. About 30 H. virescens eggs were offered to the parasitoids for 24 h. Among the four species, parasitism rate by T. atopovirilia was highest at all temperature conditions, whereas T. acacioi had the lowest rates of parasitism at 25°C and 25/30°C. Parasitism ranged from 13.8 to 43.8% among all species-temperature combinations. Viability (emerged parasitoids) ranged from 80.8 to 98.4%, and was deemed satisfactory. The emergence rates of T. exiguum and T. acacioi were affected by temperature. Temperature also affected the sex ratio of T. exiguum at 25/30°C, whereas T. pretiosum and T. acacioi produced females predominantly independent of temperature. Overall, the parasitoid T. atopovirilia was the most efficient in parasitizing H. virescens eggs, though the levels of parasitism obtained might not ensure its successful use in biological control programs. The temperature-related differences in biological traits observed in the four Trichogramma species tested hint at the importance of making careful choices regarding climatic conditions where the parasitoid is going to be used when selecting a species for biological control programs.

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Section: Introductionmentioning

confidence: 98%

Performance of four Trichogramma species (Hymenoptera: Trichogrammatidae) as biocontrol agents of Heliothis virescens (Lepidoptera: Noctuidae) under various temperature regimes

et al. 2011

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“…Inundative releases of Trichogramma species have proved to be effective against several pests, especially where the natural enemy development is not disrupted by chemical pesticides (Briere et al, 1999;Garcia et al, 1995b). When released in the field, these parasitoids experience fluctuating abiotic conditions including temperature variations, which play a major role in determining their rate of development and survival (Foester and Foester, 2009;Pizzol et al, 2010;Ratte, 1985). Different fitness attributes change based on how temperature communicates with different species/strains of natural enemies and also the host (Pizzol et al, 2010;Reznik and Vaghina, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…When released in the field, these parasitoids experience fluctuating abiotic conditions including temperature variations, which play a major role in determining their rate of development and survival (Foester and Foester, 2009;Pizzol et al, 2010;Ratte, 1985). Different fitness attributes change based on how temperature communicates with different species/strains of natural enemies and also the host (Pizzol et al, 2010;Reznik and Vaghina, 2006). In Asiatic countries, Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) is preferred as a factitious host as it can be reared by adopting a simple and easy production protocol.…”

Section: Introductionmentioning

confidence: 99%

Temperature based differences in biological parameters of some potential species/strains of Trichogramma

Ghosh

Ballal

Verghese³

2017

Journal of Biological Control

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The effect of temperature on different Trichogramma spp. is an aspect to be understood for planning mass production strategies and further field releases. The key biological parameters of seven different spp./strains of trichogrammatids (viz. Trichogramma japonicum Ashmead, T. cordubensis Vargas and Carbello, T. achaeae Nagaraja and Nagarkatti, four strains of T. chilonis Ishii i.e. lab strain, Nilgiris strain, Kodaikanal strain and a strain acclimatized to constant 15°C) were investigated at five constant temperatures (16, 21, 26,. The different test temperatures had a significant impact on the biological parameters of the different species/strains. Based on longevity, parasitism and fecundity attributes, the best temperature to propagate these trichogrammatids was found to be 26°C. Considering the higher parasitism rates and the ability to parasitize and remain fecund at varied temperatures, T.chilonis Nilgiris strain proved to be the best. From the linear model of regression analysis, the upper temperature thresholds ranged from 35 to 46.37°C and the lower temperature thresholds were recorded to range between 9 and 12°C, with T. cordubensis appearing to be least temperature sensitive.

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“…Having the majority of parasitism concentrated on the first day is a positive feature for mass releases in the field as this might guarantee quick pest control and allow growers to apply herbicides or fungicides shortly after the parasitoid release if necessary. Therefore, when choosing a release strategy it is important to consider whether parasitism is concentrated in the first days of life or evenly distributed throughout adulthood and to consider that this might vary due to differences in temperature (REZNIK; VAGHINA, 2006), hosts (REZNIK et al, 2001), or parasitoid species/strain (PIZZOL et al, 2010). These factors can influence the success of biological control programs using egg parasitoids of the genus Trichogramma (SMITH, 1996).…”

Section: Resultsmentioning

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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Temperature-dependent differences in biological traits between two strains of Trichogramma cacoeciae (Hymenoptera: Trichogrammatidae)

Abstract: International audienceLienDigitalObjectIdentifier http://dx.doi.org/10.1007/s10340-010-0327-0 LienArticle http://www.springerlink.com/content/g98685852816p827

Cited by 75 publications

References 27 publications

Performance of four Trichogramma species (Hymenoptera: Trichogrammatidae) as biocontrol agents of Heliothis virescens (Lepidoptera: Noctuidae) under various temperature regimes

Performance of four Trichogramma species (Hymenoptera: Trichogrammatidae) as biocontrol agents of Heliothis virescens (Lepidoptera: Noctuidae) under various temperature regimes

Temperature based differences in biological parameters of some potential species/strains of Trichogramma

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

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