Ocorrência de Trichospilus diatraeae (Hym.: Eulophidae) em broca-das-cucurbitáceas, no Brasil

Melo, Ricardo Lopes de; Pratissoli, Dirceu; Polanczyk, Ricardo Antônio; Tavares, Marcelo Teixeira; Milanez, André Malacarne; Melo, D. F.

doi:10.1590/s0102-05362011000200016

Cited by 11 publications

(6 citation statements)

References 9 publications

(5 reference statements)

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“…Tetrastichus howardi (Hymenoptera: Eulophidae) is an Asian parasitoid species that was introduced into South Africa for the purpose of biological control of the Chilo partellus (Lepidoptera: Pyralidae) (MELO et al, 2011). In Brazil, Tetrastichus howardi has been recorded as parasitizing the pupae of Diatraea saccharalis (Lepidoptera: Crambidae) in sugarcane (VARGAS et al, 2011) and in corn (CRUZ et al, 2011) and pupae of Plutella xylostella in cabbage (SILVA-TORRES et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Parasitism of Helicoverpa armigera pupae (Lepidoptera: Noctuidae) by Tetrastichus howardi and Trichospilus diatraeae (Hymenoptera: Eulophidae)

et al. 2016

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Helicoverpa armigera is a pest that was recently detected in Brazil, which causes significant losses in various crops in different regions of the country. Biological control has been reported to offer a promising alternative in the management of this pest. Thus, this study evaluated the ability of the parasitoids Tetrastichus howardi and Trichospilus diatraeae to parasitize pupae of H. armigera in the laboratory. H. armigera pupae were individually exposed to 15 female Trichospilus diatraeae or 15 female Tetrastichus howardi for 24 h. The pupae remained under observation until the emergence of parasitoids. Parasitism by both parasitoids was observed in 100% of the pupae. Further, 100% of Tetrastichus howardi and 90% of Trichospilus diatraeae emerged. The life cycle of Tetrastichus howardi parasitizing pupae of H. armigera was 15 ± 0.0 days, while that of Trichospilus diatraeae was 15.90 ± 0.10 days. The numbers of offspring from Tetrastichus howardi and Trichospilus diatraeae were 669.3 ± 33.47 and 816.11 ± 89.22 per pupae, with a sex ratio of 0.91 ± 0.01 and 0.94 ± 0.01, respectively. Tetrastichus howardi and Trichospilus diatraeae were shown to successfully parasitize H. armigera pupae in laboratory conditions, suggesting that this host could be used for rearing both parasitoids. However, further detailed studies of the host-parasitoid relationship are needed to assess the feasibility of including these parasitoids in integrated management programs of H. armigera. Key words: Biological control, insect pests, parasitoid ResumoHelicoverpa armigera é uma praga recentemente identificada no Brasil ocasionando perdas significativas em várias culturas em várias regiões do país. O controle biológico tem sido relatado como uma das alternativas promissoras para o manejo desta praga. O objetivo deste trabalho foi avaliar o parasitismo de pupas de H. armigera pelos parasitoides Tetrastichus howardi e Trichospilus diatraeae, em laboratório. Pupas de H. armigera foram individualizadas e expostas ao parasitismo por 15 fêmeas de Trichospilus diatraeae ou por 15 fêmeas de Tetrastichus howardi, durante 24 h. Após este período, as pupas permaneceram em observação até a emergência dos parasitoides. As porcentagens de parasitismo de Tetrastichus howardi e Trichospilus diatraeae foram de 100%. Em relação à emergência, 1 Pesquisador, Dr., Embrapa Agropecuária Oeste, Dourados, MS, Brasil.

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Section: Introductionmentioning

confidence: 99%

“…In Brazil, this species was first reported in pupae of Arctiidae (PARON; BERTI-FILHO, 2000); it has since been reported in Geometridae (PEREIRA et al, 2008) and Pyralidae (MELO et al, 2011). So far, there are no reports to indicate whether Trichospilus diatraeae parasitizes H. armigera under natural conditions.…”

Section: Introductionmentioning

confidence: 99%

Parasitism of Helicoverpa armigera pupae (Lepidoptera: Noctuidae) by Tetrastichus howardi and Trichospilus diatraeae (Hymenoptera: Eulophidae)

et al. 2016

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“…This natural enemy parasitizes D. hyalinata pupae, and has potential to control this pest (Melo et al 2011). Its generalist habit increases the potential of T. diatraeae for use in pest control, but factors like climate, food availability, and the number of females parasitizing a single host may affect biological characteristics and reproductive capacity of natural enemies (Gu et al 2003, Brodeur and Boivin 2004, Chaisaeng et al 2010, Pereira et al 2010.…”

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confidence: 99%

Density ofTrichospilus diatraeae(Hymenoptera: Eulophidae) ParasitizingDiaphania hyalinata(Lepidoptera: Crambidae) Pupae

Silva

Zanuncio

Pereira

et al. 2014

Annals of the Entomological Society of America

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Diaphania hyalinata L. (Lepidoptera: Crambidae) is a key pest of plants in the family Cucurbitaceae, defoliating and reducing photosynthetic area and yield. Trichospilus diatraeae Margabandhu & Cherian, 1942 (Hymenoptera: Eulophidae) parasitizes the pupae of this pest, but its biological and reproductive parameters with this host are unknown. The objective of our study was to characterize the reproduction of T. diatraeae in D. hyalinata pupae with different densities of this parasitoid. Individual D. hyalinata pupae (48 h old) were exposed to different densities of 7'. diatraeae (1:1, 4:1, 8:1, 12:1, 16:1, 20:1, and 24:1). The parasitoid density did not affect the parasitism and emergence rate of this natural enemy. The progeny, sex ratio, longevity, and head capsule width of T. diatraeae males and females decreased with increasing density, and its life cycle was proportional to density increase of T. diatraeae. Densities of up to eight T. diatraeae individuals per D. hyalinata pupae are favorable for the development of this parasitoid.

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“…Pests can reduce the productivity of plants of this family throughout the vegetative and reproductive stages (Gonring et al 2003;Dhillon et al 2005;Santana et al 2012). Diaphania species are widely distributed in America, and they feed on Cucurbitaceae leaves, twigs, and shoots (Surís et al 1997;Gonring et al 2003;Melo et al 2011).…”

mentioning

confidence: 99%

“…The generalist habit of Trichospilus diatraeae Cherian & Margabandhu (Hymenoptera: Eulophidae) renders this parasitoid as a promising agent for biological control (Ribeiro et al 2013;Rodrigues et al 2013). Trichospilus diatraeae parasitized Diaphania hyalinata L. (Lepidoptera: Crambidae) pupae in the field at a level that showed a considerable potential for its use in the biological control of this pest (Melo et al 2011). Trichogramma species (Hymenoptera: Trichogrammatidae) and Tachinidae species have been reported to parasitize D. hyalinata eggs and larvae, respectively (Gonring et al 2003;Polanczyk et al 2011).…”

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confidence: 99%

Reproduction ofTrichospilus diatraeae(Hymenoptera: Eulophidae) in the Pupae ofDiaphania hyalinata(Lepidoptera: Crambidae) of Various Ages

Silva

Zanuncio

Pereira

et al. 2015

Florida Entomologist

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Trichospilus diatraeae Cherian & Margabandhu (Hymenoptera: Eulophidae) is a gregarious parasitoid of a wide variety of lepidopterans including melonworm, Diaphania hyalinata L. (Lepidoptera: Crambidae), pupae in the field. The latter is a key pest of Cucurbitaceae; it primarily damages their leaves and secondarily their fruit, and it reduces the productivity of the plants. The aim of this study was to determine the effect of the age of D. hyalinata pupae on the development of T. diatraeae. Diaphania hyalinata pupae aged 24, 48, 72, 96, 120, and 144 h were individualized and exposed to eight 48-hold T. diatraeae females for 24 h. The emergence and parasitism rates, sex ratios, and longevities of T. diatraeae males and females were found to be similar with D. hyalinata pupae of different ages. The number of progeny, width of the head capsule, and duration of the life cycle (egg to adult) of T. diatraeae decreased with the increasing age of D. hyalinata pupae. Importantly, the number of parasitoid progeny per host pupa and size of the parasitoid adults were larger when 24-hold host pupae were parasitized than when 48-to 144-hold pupae were parasitized. Trichospilus diatraeae was very effective in parasitizing D. hyalinata pupae of ages ranging from 24 to 144 h.

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Ocorrência de Trichospilus diatraeae (Hym.: Eulophidae) em broca-das-cucurbitáceas, no Brasil

Cited by 11 publications

References 9 publications

Parasitism of Helicoverpa armigera pupae (Lepidoptera: Noctuidae) by Tetrastichus howardi and Trichospilus diatraeae (Hymenoptera: Eulophidae)

Parasitism of Helicoverpa armigera pupae (Lepidoptera: Noctuidae) by Tetrastichus howardi and Trichospilus diatraeae (Hymenoptera: Eulophidae)

Density ofTrichospilus diatraeae(Hymenoptera: Eulophidae) ParasitizingDiaphania hyalinata(Lepidoptera: Crambidae) Pupae

Reproduction ofTrichospilus diatraeae(Hymenoptera: Eulophidae) in the Pupae ofDiaphania hyalinata(Lepidoptera: Crambidae) of Various Ages

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