Influence of host preference, mating, and release density on the parasitism of Telenomus remus (Nixon) (Hymenoptera, Platygastridae)

Queiroz, Ana Paula de; Bueno, Adeney de Freitas; Pomari-Fernandes, Aline; Bortolotto, Orcial Ceolin; Mikami, Adriana Yatiem; Olive, Lopes

doi:10.1016/j.rbe.2016.12.004

Cited by 17 publications

(11 citation statements)

References 19 publications

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“…The longevity of parental females, the progeny egg-adult period, parasitism capacity (%), and emergence of parasitoids from the parasitized eggs were similar between mated and unmated females. Queiroz et al (2016) reported similar results for T. remus, where in progeny from mated females displayed a sex ratio of 0.6, while it was 0 for the unmated females.…”

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

confidence: 58%

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

Silva¹,

Bueno²,

Neves³

et al. 2018

JAS

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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.

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

confidence: 58%

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

Silva¹,

Bueno²,

Neves³

et al. 2018

JAS

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“…The discrepancies may be due to laboratory conditions, as the performance of T. remus is affected by temperature and humidity [40][41][42][43]. Differences may also be explained by parasitoid strains [35] , as well as the egg mass/parasitoid ratio [44] and exposure time.…”

Section: Discussionmentioning

confidence: 99%

“…No parasitoids were released in any of the control fields. The T. remus parasitoid was released at the rate of 15 T. remus females per 100 FAW eggs as recommended in other settings [35]. This corresponded to 1250 parasitoids per 200 m 2 (750 females and 500 males) and three parasitoid cards per release field.…”

Section: On-station Releasesmentioning

confidence: 99%

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

Laminou

Ba²,

Karimoune³

et al. 2020

Insects

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The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an insect native to the tropical and subtropical Americas that has recently spread to Africa, where it predominately attacks maize, sorghum and other plant species. Biological control is an environmentally friendly way of combatting the pest and contributes to an integrated pest management approach. In Africa, several trichogrammatid parasitoids and Telenomus remus Nixon (Hymenoptera: Platygastridae) have been found parasitizing eggs of the FAW. In Niger, the egg parasitoids encountered include Trichogrammatoidea sp. (Hymenoptera: Trichogrammatidae) and Telenomus remus Nixon. Parasitism of the FAW eggs by the two egg parasitoids was assessed in the laboratory, followed by field testing on sentinel eggs. In the laboratory, T. remus parasitized on average 78% of FAW eggs, compared to 25% for Trichogrammatoidea sp. Telenomus remus was able to parasitize egg masses that were fully covered with scales, while Trichogrammatoidea sp. parasitized only uncovered egg masses. On-farm releases of T. remus in sorghum fields caused up to 64% of FAW egg parasitism. Parasitized eggs yielded viable progeny, which can contribute to FAW egg parasitism build-up during the cropping season. Our findings lay the groundwork for the use of T. remus in augmentative releases against FAW in Africa.

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“…Although it is known that host preference by parasitoid species is defined genetically ( Singer et al 1992 ), under a mass rearing situation, different intraspecific interactions (i.e., extrinsic and intrinsic competition) may occur and influence the results and quality of the produced parasitoids ( Canale and Benelli 2012 , Queiroz et al 2017 ). For this reason, under this scenario the host preference by parasitoid species must be properly analyzed, looking for those ages that better render higher levels of parasitism, adult emergence, and a female biased sex ratio ( Li et al 2006 , Iranipour et al 2010 ).…”

Section: Discussionmentioning

confidence: 99%

Best Host Age of Anastrepha obliqua (Diptera: Tephritidae) for Multiplication of Four Native Parasitoids from the Americas

Poncio

Montoya

Cancino

et al. 2018

Journal of Insect Science

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The success of the mass rearing of parasitoids is directly related to host quality, and it requires selecting the best biological host age to ensure the optimal performance of the parasitoids released into the field. The larval development of the parasitoids Utetes anastrephae (Viereck) (Hymenoptera: Braconidae) and Odontosema anastrephae Borgmeier (Hymenoptera: Eucoilidae) and the pupal development of the parasitoids Coptera haywardi (Ogloblin) (Hymenoptera: Diapriidae) and Dirhinus sp. (Hymenoptera: Chalcididae) on the native host Anastrepha obliqua (Macquart) (Diptera: Tephritidae) in different larvae and pupae ages were investigated under laboratory conditions. Not all parasitoid species developed with the same efficiency in immature individuals of A. obliqua; U. anastrephae and C. haywardi showed the higher parasitism rates. The emergence and parasitism of U. anastrephae were equal using larvae from 5 to 8 d, while C. haywardi reared in 1- to 8-d-old pupae showed higher averages of parasitism. These results suggest that native parasitoids can be used to strengthen the implementation of biological control projects against A. obliqua, a pest of economic importance in South America.

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Influence of host preference, mating, and release density on the parasitism of Telenomus remus (Nixon) (Hymenoptera, Platygastridae)

Cited by 17 publications

References 19 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)

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

Best Host Age of Anastrepha obliqua (Diptera: Tephritidae) for Multiplication of Four Native Parasitoids from the Americas

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