Biology of &lt;I&gt;Stethynium&lt;/I&gt; sp. (Hymenoptera: Mymaridae), a Native Parasitoid of an Introduced Weed Biological Control Agent

Jacob, H. S.; Joder, A.; Batchelor, Kathryn L.

doi:10.1603/0046-225x-35.3.630

Cited by 12 publications

(7 citation statements)

References 31 publications

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“…This matches findings for other mymarid species (Chen et al 2006, Jacob et al 2006. The offspring sex ratio was also unaffected by the diet.…”

Section: Discussionsupporting

confidence: 87%

“…While longevity co-varied with diet and progeny production, it does not appear that the additional lifespan strongly influences total egg placement, further supporting hypothesis that C. noackae is pro-ovigenic. Rather, it appears likely that honey-supplemented females had more energy to fuel oviposition, as is the case with other mymarids (e.g., Stethynium species; Jacob et al 2006). …”

Section: Discussionmentioning

confidence: 98%

“…These food sources can include honeydew from sap-sucking insects, floral nectar or pollen and in some cases, host haemolymph (Jervis et al 1996, Lopez et al 2004, Jacob et al 2006. Feeding regime clearly influenced both the probability of producing offspring and also the number of C. noackae offspring produced.…”

Section: Discussionmentioning

confidence: 99%

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Biology and Rearing of Cleruchoides noackae (Hymenoptera: Mymaridae), an Egg Parasitoid for the Biological Control of Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae)

et al. 2013

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Cleruchoides noackae Lin and Huber (Hymenoptera: Mymaridae) is a solitary egg parasitoid of Thaumastocoris peregrinus Carpintero and Dellapé (Hemiptera: Thaumastocoridae). The parasitoid was first described in 2009 and its biology and rearing are poorly understood. A key obstacle to the use of C. noackae as a biological control agent has been the ability to consistently rear it under quarantine conditions. This study reports on a series of experiments conducted in quarantine to rear C. noackae and to examine the effects of diet on longevity, per capita reproduction and progeny sex ratio, as well as to determine development time, and preference and suitability of host eggs of different ages.When supplemented with honey solution, the longevity of C. noackae females increased significantly 2 by 2.4 days and that of males by 1.7 days, relative to the unfed adults. Mean per capita reproduction for the honey-fed wasps was 7.7 offspring per female, with progeny sex ratio slightly skewed towards males. Mean percentage parasitism was 32.2 %. Cleruchoides noackae was capable of parasitizing and completing development from oviposition to adult eclosion within 15.7 days in host eggs between zero and five days old. The ability of C. noackae to parasitize a wide range of host egg ages increases the period of vulnerability of T. peregrinus to attack, increasing its potential efficacy as a biological control agent. The methods and results reported here represent a crucial step in the on-going efforts to develop this potential biological control system.

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“…This matches findings for other mymarid species (Chen et al 2006, Jacob et al 2006. The offspring sex ratio was also unaffected by the diet.…”

Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 98%

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Biology and Rearing of Cleruchoides noackae (Hymenoptera: Mymaridae), an Egg Parasitoid for the Biological Control of Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae)

et al. 2013

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“…O sucesso de parasitismo de T. pretiosum foi de 100% para todas as idades, indicando altos índices de viabilidade, independentemente da idade do hospedeiro. Segundo Jacob et al (2006), em algumas espécies ovos mais velhos não apresentam efeito deletério no sucesso de parasitismo. Stinguel et al (2013) também constataram sucesso de parasitismo de 100% em ovos de Mocis latipes Guenée, 1852 (Lepidoptera: Noctuidae) de 24, 48 e 72 horas, parasitados por T. pretiosum.…”

Section: Discussionunclassified

Influência da idade do hospedeiro e da aprendizagem no comportamento quimiotáxico e no parasitismo de Trichogramma pretiosum

Vargas

Sant’Ana

Morais

et al. 2017

Iheringia, Sér. Zool.

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ABSTRACT. Infl uence of host age and learning on chemotactic behavior and parasitism of Trichogramma pretiosum. Trichogramma pretiosum Riley, 1879 reared on Ephestia kuehniella Zeller, 1879 eggs, have been used in biological control of Spodoptera frugiperda (J. E. Smith, 1797). However, host age and experience just after emergence might have some infl uence on parasitism and parasitoid behavior. This study evaluated the infl uence of S. frugiperda host age and egg odor experience, on chemotactic behavior and parasitism of T. pretiosum. Spodoptera frugiperda eggs with 24, 48 and 72 hours were exposed to T. pretiosum females. Parasitoid time experience, in the same host, was evaluated within 1, 3, 4, 5, 6 and 24 hours, as well as, its host exposed time (1, 2, 3 and 24 hours). Chemotactic responses of T. pretiosum (experienced and inexperienced females) to S. frugiperda egg extracts were recorded in Y-tube olfactometer. We also observe parasitism rates (choice tests) in insects with and without experience. The parasitism average was higher in S. frugiperda eggs with 24 hours. Inexperienced females and those experienced for 1, 3 and 4 hours, parasitized less S. frugiperda eggs compared to those for 5, 6 and 24 hours. There was no diff erence in parasitism from females exposed for 2, 3 and 24 hours when compared to those exposed for one hour. Experienced females were more attracted to S. frugiperda eggs odor than to control (hexano). Parasitism percentage, by inexperienced parasitoids, was greater in E. kuehniella eggs (original host) than in S. frugiperda, however it was not observed in experienced females.KEYWORDS: Biological control, egg parasitoid, eggs extract.RESUMO. Trichogramma pretiosum Riley, 1879 mantido em ovos de Ephestia kuehniella Zeller, 1879, tem sido utilizado no controle biológico de Spodoptera frugiperda (J. E. Smith, 1797). No entanto, fatores como idade do hospedeiro e experiência prévia, podem infl uenciar o parasitismo e o comportamento do parasitoide. Esse estudo avaliou a infl uência da idade dos ovos e da experiência em ovos e extrato de ovos de S. frugiperda no comportamento quimiotáxico e no parasitismo de T. pretiosum. Ovos de S. frugiperda com 24, 48 e 72 horas, foram expostos a fêmeas de T. pretiosum. Também foi avaliado o tempo de experiência do parasitoide, no mesmo hospedeiro, por 1, 3, 4, 5, 6 e 24 horas, assim como, seu tempo de exposição (1, 2, 3 e 24 horas). As respostas quimiotáxicas de T. pretiosum (experiente e não experiente) em extrato de ovos de S. frugiperda foram observadas em olfatômetro tipo Y. As taxas de parasitismo foram registradas em teste de escolha, com insetos experientes e inexperientes com ovos e extrato de ovos de S. frugiperda. O parasitismo em S. frugiperda foi signifi cativamente maior em ovos com 24 horas de idade. Fêmeas inexperientes e experientes por 1, 3 e 4 horas, apresentaram uma menor taxa de parasitismo, quando comparadas a fêmeas expostas por 5, 6 e 24 horas. Não houve diferença de parasitismo em fêmeas expostas por 2, 3 e 24 horas, comparadas à...

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“…However, there are reports that old eggs do not have any deleterious effect on preference or offspring performance (Pak et al, 1986;Jacob et al, 2006). Fig.…”

Section: Discussionmentioning

confidence: 98%

Effect of host egg age on preference, development and arrestment of Telenomus remus (Hymenoptera: Scelionidae)

Peñaflor¹,

Sarmento²,

Silva³

et al. 2012

Eur. J. Entomol.

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Abstract. Age of host eggs can be a limiting factor for egg parasitoids. It is expected that old eggs are less preferred by egg parasitoids, which can discriminate between eggs of different ages by using chemical cues. The objective of this study was to determine the preference, development and arrestment of Telenomus remus Nixon (Hymenoptera: Scelionidae) parasitizing Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) eggs of different ages. This egg parasitoid preferred to parasitize 1-and 2-day-old eggs rather than 3-day-old eggs in choice and no-choice assays. However, although the percentage emergence of parasitoids is significantly lower from 2-and 3-day-old eggs, the sex ratio and developmental time are unaffected. Parasitoids spent longer searching substrates impregnated with extracts of 1-and 2-day old eggs than 3-day-old eggs. Our results reveal that T. remus is able to distinguish the most suitable (1-day-old) from the least suitable (3-day-old) host eggs, but unable to recognize the unsuitability of intermediate aged eggs. Egg arrestants may be responsible for the preference of T. remus for ovipositing in 1-and 2-day old eggs.

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Biology of <I>Stethynium</I> sp. (Hymenoptera: Mymaridae), a Native Parasitoid of an Introduced Weed Biological Control Agent

Cited by 12 publications

References 31 publications

Biology and Rearing of <I>Cleruchoides noackae</I> (Hymenoptera: Mymaridae), an Egg Parasitoid for the Biological Control of <I>Thaumastocoris peregrinus</I> (Hemiptera: Thaumastocoridae)

Biology and Rearing of <I>Cleruchoides noackae</I> (Hymenoptera: Mymaridae), an Egg Parasitoid for the Biological Control of <I>Thaumastocoris peregrinus</I> (Hemiptera: Thaumastocoridae)

Influência da idade do hospedeiro e da aprendizagem no comportamento quimiotáxico e no parasitismo de Trichogramma pretiosum

Effect of host egg age on preference, development and arrestment of Telenomus remus (Hymenoptera: Scelionidae)

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