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

Pratissoli, Dirceu; Kloss, Thiago Gechel; Zinger, Fernando Domingo; Carvalho, José Romário de; Vianna, Ulysses Rodrigues; Paes, João Paulo Pereira

doi:10.1590/0001-3765201496712

Cited by 5 publications

(3 citation statements)

References 18 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At 30 Based on the results observed in the present study, T. podisi present arrhenotokous parthenogenesis, since the absence of mating directly influenced the offspring sex ratio, leading to the production of haploid males only. Reproduction via parthenogenesis of the arrhenotoky type has been described as the most common reproductive strategy for insects in the order Hymenoptera (Pratissoli et al, 2014). However, other biological parameters were not affected.…”

Section: Bioassay 1: Influence Of Mating Status On Telenomus Podisi Pmentioning

confidence: 99%

Biological Characteristics and Parasitism Capacity of Telenomus podisi (Hymenoptera: Platygastridae) on Eggs of Euschistus heros (Hemiptera: Pentatomidae)

Silva¹,

Bueno²,

Neves³

et al. 2018

JAS

View full text Add to dashboard Cite

We evaluated the effects of adult mating and temperature on the biological potential and parasitism of Telenomus podisi (Ashmead) (Hymenoptera: Platygastridae) on Euschistus heros (Fabricius) (Hemiptera: Pentatomidae). Females were isolated and the characteristics of the F1 generation were compared with those of females previously copulated. The parasitism capacity of T. podisi on E. heros eggs at 20, 25, 30, 35, and 40 °C was evaluated. The longevity of parental females (days), egg-adult period (days) of the F1 generation, parasitism of parental females (%), and parasitoid emergence (%) were not influenced by the lack or not of the copulation. The offspring of non-copulated females were males, and arrhenotokous parthenogenesis occurred. The temperatures most favorable to the parasitoid were 25 and 30 °C. Even previously copulated females generated mostly males after a few days of oviposition. Therefore, the biological characteristics and reproduction of T. podisi were impacted by adult mating prior to parasitism and by different temperatures. Although parasitism of T. podisi was not affected by mating parasitoid permanence in the field, it may be affected when unmated females are released.

show abstract

Section: Bioassay 1: Influence Of Mating Status On Telenomus Podisi Pmentioning

confidence: 99%

Biological Characteristics and Parasitism Capacity of Telenomus podisi (Hymenoptera: Platygastridae) on Eggs of Euschistus heros (Hemiptera: Pentatomidae)

Silva¹,

Bueno²,

Neves³

et al. 2018

JAS

View full text Add to dashboard Cite

show abstract

“…Nevertheless, there was tendency for younger females (1 and 2 days old) in the experiment to have a lower sex ratio than older wasps, which might be explained by the type of reproduction in this insect. Reproduction of T. remus occurs by arrhenotokous parthenogenesis, (PRATISSOLI et al, 2014), in which unfertilized females produce haploid males, and fertilized females produce both females and males. Therefore, unfertilized females are restricted to producing male progeny (BOIVIN, 2010).…”

Section: Discussionmentioning

confidence: 99%

Telenomus remus (Hymenoptera: Platygastridae) parasitism on Spodoptera frugiperda (Lepidoptera: Noctuidae) eggs: different parasitoid and host egg ages

Queiroz

Favetti

Luski

et al. 2019

SCA

View full text Add to dashboard Cite

Release of egg parasitoids for biological control of pests is a promising technique in integrated pest management (IPM). However, there is a lack of information on the performance of parasitoid females of different ages, and specifically on the behavior of the parasitoid Telenomus remus towards pest eggs at different stages of embryonic development. Thus, the relationships between host age, parasitoid age, and parasitism by T. remus on Spodoptera frugiperda eggs were evaluated. Three separate bioassays were performed, each in a completely randomized design. In the first bioassay, T. remus females grouped by age in days (ranging from 1 to 10 days old) were offered 100 ± 20 eggs of S. frugiperda for 24 hours. In the second bioassay, 100 ± 20 eggs of S. frugiperda (24, 48 or 72 hours old) were offered to females of T. remus for 24 hours. In the third bioassay, 24, 48- and 72-hour-old host eggs of S. frugiperda were offered to T. remus females in a choice test. The variables evaluated were: number of parasitized eggs, parasitoid emergence (%), and sex ratio of progeny in bioassays 1 and 2, and the number of eggs parasitized in bioassay 3. The age of T. remus females did not affect the number of S. frugiperda eggs parasitized or emergence of the progeny. However, the sex ratio was more male-biased in the progeny of 1- and 2-day-old females compared to older wasps. In bioassay 2, the highest parasitism was observed in 24- and 48-hour-old eggs. Percentage emergence and sex ratios were not influenced by the ages of the eggs tested. Telenomus remus preferred to parasitize 24-hour-old eggs in bioassays 3. Overall, the age of T. remus females tested did not affect the parasitism of S. frugiperda eggs, but the number of eggs parasitized decreased with increasing host age.

show abstract

“…Usually, sperm stock in a female's spermatheca decreases over time as a result of sperm depletion, sperm death, sperm digestion by the female, or sperm disintegration while stored in the spermatheca (Cunningham et al 1971). As a consequence, the number of males in the progeny could be expected to increase with parasitoid aging since unfertilized females produce only male individuals due to their reproductive mode of arrhenotokous parthenogenesis (Pratissoli et al 2014). Moreover, mated females can control their progeny's sex ratio by choosing when to release sperm during oviposition (Cingolani et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Effect of the Ages of Parasitoid and Host Eggs on Telenomus podisi (Hymenoptera: Platygastridae) Parasitism

et al. 2019

View full text Add to dashboard Cite

This study investigates the influence of parasitoid age and egg age of the hosts Euschistus heros (Fabricius) and Dichelops melacanthus (Dallas) on parasitism of Telenomus podisi Ashmead. Six separate bioassays were conducted: parasitism on eggs of E. heros (bioassay 1) and D. melacanthus (bioassay 2) by T. podisi females of different age (1, 5, and 10 days old); parasitism by T. podisi on eggs of different age (1, 2, 3, 4, and 5 days of embryonic development) of the hosts E. heros (bioassay 3) and D. melacanthus (bioassay 4); preference of T. podisi females for eggs at different embryonic developmental stages (eggs of 1, 2, 3, 4, and 5 days) of the hosts E. heros (bioassay 5) and D. melacanthus (bioassay 6). The age of T. podisi females and their hosts affected parasitism on both E. heros and D. melacanthus eggs. Overall, the parasitism rate was higher in older than younger parasitoids, independent of the tested host species, and host eggs between 1 and 3 days old were similarly parasitized. Thus, in T. podisi mass rearing facilities, it is recommended to use older adults (5 to 10 days old) as mother wasps to increase parasitism on the offered eggs. In addition, when hosts are completely absent in the field, or climatic conditions are unfavorable for release, mass-reared adults can be kept in the laboratory (25°C) for up to 10 days for later release in the field without any impairment of their subsequent parasitism performance.

show abstract

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

Cited by 5 publications

References 18 publications

Biological Characteristics and Parasitism Capacity of Telenomus podisi (Hymenoptera: Platygastridae) on Eggs of Euschistus heros (Hemiptera: Pentatomidae)

Biological Characteristics and Parasitism Capacity of Telenomus podisi (Hymenoptera: Platygastridae) on Eggs of Euschistus heros (Hemiptera: Pentatomidae)

Telenomus remus (Hymenoptera: Platygastridae) parasitism on Spodoptera frugiperda (Lepidoptera: Noctuidae) eggs: different parasitoid and host egg ages

Effect of the Ages of Parasitoid and Host Eggs on Telenomus podisi (Hymenoptera: Platygastridae) Parasitism

Contact Info

Product

Resources

About