Longevity and Fecundity of Brachymeria lasus (WALKER) (Hymenoptera: Chalcididae), a Pupal Parasitoid of the Oriental Tea Tortrix, Homona magnanima DIAKONOFF (Lepidoptera: Tortricidae) under Laboratory Conditions

Mao, Hongxin; Kunimi, Yasuhisa

doi:10.1303/aez.29.237

Cited by 12 publications

(7 citation statements)

References 8 publications

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“…In the present study, we exposed each female wasp to a host pupa for oviposition only once a day, which was a low oviposition rate compared with the maximum number of progeny (ca. 6) they can produce in a day (Mao and Kunimi, 1994). The result that most of the progeny were females (Table 2) suggests that under the condition of low oviposition rate, B. lasus may produce a female-biased sex ratio and may not change the sex ratio of their progeny in response to the variation of host pupal ages.…”

Section: Discussionmentioning

confidence: 97%

“…At this age range, there was no significant change in fecundity and sex ratio (Husni and Kainoh, unpublished data), and also the longevity of females was ca. 130 days under similar rearing conditions (Mao and Kunimi, 1994). The host (M. separata) pupae were obtained from a stock culture and reared continuously on an artificial diet (Silk Mate ® , Nihon Nosan Kogyo Inc.) according to the method of Kanda (1991).…”

Section: Methodsmentioning

confidence: 99%

“…In Japan, B. lasus was reported as a potential biocontrol agent for the oriental tea tortrix, Homona magnanima Diakonoff Kunimi, 1991, 1994). Mao and Kunimi (1994) reported the longevity and fecundity of B. lasus and also showed that progeny sex ratio changed depending on maternal age, but the effects of host age on behavioral and developmental aspects were not examined. This study was performed to determine the effect of host pupal age on host preference and host suitability in B. lasus.…”

Section: Introductionmentioning

confidence: 99%

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Effects of host pupal age on host preference and host suitability in Brachymeria lasus(Walker)(Hymenoptera: Chalcididae).

Husni

Kainoh

Honda

2001

Appl. Entomol. Zool.

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The influence of host pupal age on host preference and host suitability in Brachymeria lasus (Walker) was examined. Rice armyworm, Mythimna separata (Walker), pupae of different ages, i.e., 0-1, 2-3, 4-5, 6-7 and 8-9 d old were used as hosts. The females accepted the host pupae equally for oviposition among 5 age groups, suggesting that female B. lasus does not discriminate hosts of different ages. However, the rate of progeny emergence was lower in old (6 to 9 d old) hosts. The adult parasitoid progeny produced from young (0 to 5 d old) hosts were heavier in body weight than those from old hosts. The developmental time of the immature stages of progeny was not significantly affected by host pupal age. Adult progeny with heavier body weight emerged earlier than lighter ones when reared on 0-to 5-d-old hosts. However, there was no correlation between the progeny body weight and developmental time of the immature stages when reared on 6-to 9-d-old hosts. Most of the progeny were females and no effect of host age was found on progeny sex ratio, which may be due to the low oviposition rate they experienced.

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Section: Discussionmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of host pupal age on host preference and host suitability in Brachymeria lasus(Walker)(Hymenoptera: Chalcididae).

Husni

Kainoh

Honda

2001

Appl. Entomol. Zool.

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“…more females and more progeny. Though several factors have been reported to influence the developmental processes of parasitoids, those that have been investigated in detail include host age (Islam 1995;Nakamura and Noda 2002), host size (Wen, Weaver, and Brower 1995;Islam 1997;Nakamura and Noda 2002), parasitoid age (Hu, Barbosa, and Martinat 1986;Voikl and Mackauer 1990;Rajapakse, Waddill, and Ashley 1992), parasitoid size (Coombs 1997), and adult diet (Veeranna and Jyothi 1991;Veeranna and Nirmala 1992;Mao and Kunimi 1994;Islam 2001;Mitsunaga, Shimoda, and Yano 2004). The developmental parameters for these parasitoids has been generated chiefly on egg, endo-larval, and endo-pupal parasitoids.…”

Section: Discussionmentioning

confidence: 99%

Reproductive performance ofNesolynx thymus(Hymenoptera: Eulophidae), in relation to age ofMusca domestica(Diptera: Muscidae)

Aruna

Manjunath

2009

Biocontrol Science and Technology

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An investigation was undertaken to record the influence of host age on the reproductive performance of Nesolynx thymus (Hymenoptera:Eulophidae). This is an indigenous, gregarious, ecto-pupal parasitoid of certain dipteran insects, including the tachinid fly, Exorista bombycis (Louis) which is a well-known endolarval parasitoid of the silkworm, Bombyx mori. Each gravid N. thymus female was allowed to parasitise 1Á4-day-old puparia of Musca domestica L. for 2 days at a parasitoidÁhost ratio of 1:20. The parasitised host puparia were observed for progeny recovery, sex ratio, female longevity and fitness (adult size). In addition, reproductive performance of the parasitoid progeny was assessed by allowing its females to parasitise for 2 days, 3-day-old puparia of E. bombycis at a parasitoidÁ host ratio of 1:4. There was a significant negative correlation between host age and parasitisation rate, parasitoid developmental duration, sex ratio and female longevity while the correlation was positive between host age and parasitoid recovery per host puparium. Similarly, negative correlation was observed between host age and morphometric parameters (body length, head width and wing span of male and female and length and width of female abdomen) of the progeny adults. Host age did not have any impact on the reproductive performance of progeny adults when allowed to parasitise puparia of E. bombycis.

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“…Most studies of the effects of adult feeding on lifetime reproductive success have shown that, for host-feeding species, sugar meals increase longevity, while host-feeding provides materials used for egg maturation (reviewed by Heimpel et al, 1997). Sugar sources, though, can also have a direct influence on the number of mature eggs a female carries, as for example in species with oosorption (Edwards, 1954) and in species that have to feed first after eclosion, in order to mature their eggs (Mao & Kunimi, 1994). Knowledge of these factors is important, as they may influence the success of an antagonist released as a biological measure in the field.…”

Section: Introductionmentioning

confidence: 99%

Reproduction and immature development of Hyssopus pallidus (Hymenoptera: Eulophidae), an ectoparasitoid of the codling moth

Tschudi-Rein¹,

Dorn²

2001

Eur. J. Entomol.

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Abstract. Hyssopus pallidus (Askew) (Hymenoptera: Eulophidae) is a gregarious ectoparasitoid of late larvae of the codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae). In the present work reproduction and the development and morphology of the immature stages were studied. Five larval instars were differentiated by the shape and size of the mandibles. The larvae are hymenopteriform with a weakly sclerotized head and 13 segments. The first instar has four pairs of spiracles, while the other four instars have nine pairs. Under laboratory conditions of 22-24°C and 60-80% RH the egg stage lasted 1.5 days, the larval instars 6.3 days, and the pupal stage 7.9 days in females and 7.2 days in males. The duration of each of the five larval instars (L1-L5) is approximately 1, 0.5, 0.75, 0.75 and 3.5 days, respectively. Male and female development time does not differ significantly in the egg and larval stages, but differences are highly significant in the pupal stage. Male and female pupae can be differentiated by their sexual rudiments. Copulation takes place immediately upon emergence of the females between siblings, adult males appearing before the females. Females in culture with access to an energy source can survive for more than 60 days. They are synovigenic: they emerge with no mature eggs in their ovaries and take the first two days after emergence to mature the full set of around 24-30 eggs. They continue paralyzing hosts, ovipositing and maturing eggs for as long as they live. After an oviposition a female needs two to three days to mature a new full set of eggs. Age and feeding influence egg load. Oosorption is significant in starved females, but also occurs in older fed females with no host contact.

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Longevity and Fecundity of Brachymeria lasus (WALKER) (Hymenoptera: Chalcididae), a Pupal Parasitoid of the Oriental Tea Tortrix, Homona magnanima DIAKONOFF (Lepidoptera: Tortricidae) under Laboratory Conditions

Cited by 12 publications

References 8 publications

Effects of host pupal age on host preference and host suitability in Brachymeria lasus(Walker)(Hymenoptera: Chalcididae).

Effects of host pupal age on host preference and host suitability in Brachymeria lasus(Walker)(Hymenoptera: Chalcididae).

Reproductive performance ofNesolynx thymus(Hymenoptera: Eulophidae), in relation to age ofMusca domestica(Diptera: Muscidae)

Reproduction and immature development of Hyssopus pallidus (Hymenoptera: Eulophidae), an ectoparasitoid of the codling moth

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