Spatial distribution and control levels of Anastrepha spp. (Diptera: Tephritidae) in guava orchards.

This study aimed to know the patterns of spatial distribution of Anastrepha spp. and establish a criterion for determining the appropriate time for pest control. For this, 90 McPhail traps were used as Sampling Units (SU) divided into three commercial orchards of Novo Milênio guava with a total area of 14 ha. Traps were interspersed between the rows of plants, systematically in the orchards, hung and baited with 5% hydrolyzed corn protein with weekly collections. We caught 8,170 Anastrepha spp. in 840 SU. The mean infestation index was compared to the three types of distribution: random, uniform, aggregate, and fit by the theoretical frequency distributions of Poisson, negative binomial and positive binomial. The populations of Anastrepha presented aggregate distribution according to the mean variance method (I), tested by distance from randomness. The economic damage risk potential of Anastrepha spp. was associated with the aggregate distribution behavior. The most appropriate moment for the use of control techniques is when reaching 20 flies by the negative binomial. On the other hand, number of fruit fly adults per trap per day (FTD), underestimates population index, which will allow population growth, leading to risk of crop production loss.

Sequential sampling plan for fruit fly species of the Genus Anastrepha (Diptera: Tephritidae) in guava orchards.

This study aimed to elaborate a sequential sampling plan for Anastrepha species in commercial orchards of guava Psidium guajava Novo Milênio cultivar. Samplings were carried out in three orchards in the State of Mato Grosso do Sul. Fruit flies were sampled for 23 weeks. Data were subjected to the sequential probability ratio test. We adopted the mean of 0.3 Anastrepha individuals for the safety level and 0.7 for the control level and the observed frequency was adjusted to the negative binomial expected frequency (Bn) for the equation of the line. The condition of adopting a control method recommended by S1 = 6.5554 + 0.5362n was observed in the upper line. In turn, the lower line, which does not require the use of a control method, is defined by So = -2.8229 + 0.5362n. The sequential sampling plan predicted the expected maximum number of 37 sampling units to decide whether or not to use control method(s). This sequential plan was defined with mean number of 0.54 adults for each McPhail trap unit (sample). The sequential plan generated is unprecedented and will contribute to the rapid and safe decision making in the control of Anastrepha species of economic importance in guava farming.

Biodiversity of frugivorous flies (Diptera: Tephritoidea) captured in citrus groves, Mato Grosso do Sul, Brazil / Biodiversidade das moscas frugívoras (Diptera: Tephritoidea) capturadas em pomares de citros, Mato Grosso do Sul

This paper presents a faunistic analysis of the frugivorous species of Tephritoidea (Diptera) captured in three citrus groves in the municipalities of Anastácio (Chácara Laranjal, 20º 31' 36'' S, 55º 50' 12'' W, 170 m) and Terenos (Chácara Suzuki, 20º 26' 12" S, 55º 04' 54'' W, 308m), MS, Brazil, during a 25 month period. McPhail traps with 5 percent hydrolyzed corn protein were hung in Citrus sinensis (L.) and C. reticulata (L.) trees, spaced 30 m apart. The Tephritidae species caught were: Anastrepha alveatoides Blanchard, A. bezzii Lima, A. castanea Norrbom, A. daciformis Bezzi, A. dissimilis Stone, A. distincta Greene, A. fraterculus (Wied.), A. grandis (Macquart), A. haywardi Blanchard, A. leptozona Hendel, A. macrura Hendel, A. montei Lima, A. obliqua (Macquart), A. pickeli Lima, A. punctata Hendel, A. rheediae Stone, A. serpentina (Wied.), A. sororcula Zucchi, A. striata Schiner, A. turpiniae Stone, A. undosa Stone, A. zenildae Zucchi, three undescribed species - Anastrepha sp.1, Anastrepha sp.2; Anastrepha sp.3 and Ceratitis capitata (Wied.). The frugivorous Lonchaeidae caught were: Dasiops sp.; D. inedulis Steyskal, Lonchaea sp. and Neosilba spp. The Mediterranean Fruit Fly, C. capitata, was the most abundant and frequent, being the dominant species in the groves of both municipalities. In the Citrus grove in Anastácio the most abundant species were: Anastrepha daciformis, A. obliqua, A. pickeli, A. punctata, A. sororcula and A. fraterculus. In the Citrus groves in Terenos, A. dissimilis, A. punctata, A. sororcula, A. daciformis, A. striata and A. pickeli were the most abundant species.

Este trabalho apresenta uma análise faunística das espécies frugívoras de Tephritoidea (Diptera), capturadas em três pomares de citros dos municípios de Anastácio e Terenos-MS, durante 25 meses. Armadilhas plásticas McPhail com proteína hidrolisada de milho a 5 por cento foram penduradas em plantas de Citrus sinensis (L.) e C. reticulata (L.) a 1,70 m do nível do solo e espaçadas a 30 m. As espécies de Tephritidae capturadas foram: Anastrepha alveatoides Blanchard, A. bezzii Lima, A. castanea Norrbom, A. daciformis Bezzi, A. dissimilis Stone, A. distincta Greene, A. fraterculus (Wied.), A. grandis (Macquart), A. haywardi Blanchard, A. leptozona Hendel, A. macrura Hendel, A. montei Lima, A. obliqua (Macquart), A. pickeli Lima, A. punctata Hendel, A. rheediae Stone, A. serpentina (Wied.), A. sororcula Zucchi, A. striata Schiner, A. turpiniae Stone, A. undosa Stone, A. zenildae Zucchi; três espécies não-descritas - Anastrepha sp.1, Anastrepha sp.2, Anastrepha sp.3 e Ceratitis capitata (Wied.). Os Lonchaeidae capturados foram: Dasiops sp.; D. inedulis Steyskal, Lonchaea sp. e Neosilba spp. A mosca-do-mediterrâneo, C. capitata foi a espécie mais abundante e freqüente, sendo dominante nos pomares de ambos os municípios. No pomar do município de Anastácio, as espécies mais abundantes foram: Anastrepha daciformis, A. obliqua, A. pickeli, A. punctata, A. sororcula e A. fraterculus. Nos pomares de Terenos, A. dissimilis, A. punctata, A. sororcula, A. daciformis, A. striata e A. pickeli foram as espécies mais abundantes.

Populational fluctuation of frugivorous flies (Diptera: Tephritoidea) in two orange groves in the State of Mato Grosso do Sul, Brazil / Flutuação populacional de moscas frugívoras (Diptera: Tephritoidea) em dois pomares de laranjas do Estado de Mato Grosso do Sul

This paper evaluated the capture of frugivorous flies (Tephritidae and Lonchaeidae) with plastic McPhail traps, in two commercial citrus groves, located in the municipalities of Anastácio and Terenos, in the state of Mato Grosso do Sul, Brazil. The aim of this work was to determine the populational fluctuation of adult frugivorous flies, and to study its relationship with the damaged fruits in the groves. The traps were placed about 30 m apart over the entire area in both groves, hung up approximately 1.70 m high from soil, in the canopy of the citrus plants. Eight traps were installed (two traps/ha) at Anastácio and 21 traps in Terenos (one trap/ha). The traps were baited with the hydrolyzed corn protein (5 percent) TephritidTM (food bait). Evaluations were carried out from March 22, 1994 to March 23, 1996. Ceratitis capitata (Wiedemann) and 25 species of Anastrepha were caught during several months in both orange groves, but no fruit fly species were found infesting oranges. Neosilba sp. was caught from the traps during all the experiment and was also reared from the damaged oranges, thus suggesting that that fly can be a pest. The predominant species of frugivorous flies caught in the traps were: Neosilba sp., C. capitata, Anastrepha punctata Hendel and A. sororcula Zucchi. There was no correlation between adult frugivorous flies caught in the traps and the number of larvae and adult flies reared from the infested oranges collected in the groves.

Este trabalho avaliou a captura de moscas frugívoras (Tephritidae e Lonchaeidae) com armadilhas plásticas McPhail, em dois pomares comerciais de citros, localizados nos municípios de Anastácio e Terenos, Estado de Mato Grosso do Sul. Os objetivos foram estudar a flutuação populacional dos adultos capturados nas armadilhas e verificar qual a relação entre as espécies amostradas nas armadilhas com os frutos danificados. As armadilhas foram distanciadas cerca de 30 m entre si sobre toda a área, penduradas a aproximadamente 1,70 m de altura, na copa das plantas de citros. Foram instaladas oito armadilhas (duas armadilhas/ha) no pomar em Anastácio e 21 armadilhas em Terenos (uma armadilha/ha). As armadilhas foram iscadas com a proteína hidrolizada de milho (5 por cento) TephritidMR (atrativo alimentar). As avaliações foram feitas no período de 22 de março de 1994 a 23 de março de 1996. A mosca-do-mediterrâneo Ceratitis capitata (Wiedemann) e 25 espécies de Anastrepha foram capturadas em vários meses nas armadilhas, mas não infestaram laranjas. Neosilba sp. foi capturada ininterruptamente durante os 25 meses e foi encontrada, também, nos frutos danificados amostrados nos pomares. Isso sugere que Neosilba sp. pode ter importância econômica em citros. As espécies de moscas frugívoras predominantes foram Neosilba sp., C. capitata, Anastrepha punctata Hendel e A. sororcula Zucchi. Não houve correlação entre o número de adultos de moscas frugívoras capturadas nas armadilhas com o número de larvas e de adultos criados das laranjas infestadas colhidas nos pomares.

Larval endoparasitoids (Hymenoptera) of frugivorous flies (Diptera, Tephritoidea) reared from fruits of the cerrado of the State of Mato Grosso do Sul, Brazil

This paper presents a five years survey of endoparasitoids obtained from the larvae of frugivorous Tephritidae and Lonchaeidae flies. The insects were reared from cultivated and wild fruits collected in areas of the cerrado in the State of Mato Grosso do Sul, Brazil. The flies obtained from 14 host fruit species were eight Anastrepha species, Ceratitis capitata (Wiedemann, 1824) (Tephritidae); Dasiops sp. and Neosilba spp. (Lonchaeidae). Eleven parasitoid species were collected: Braconidae - Asobara anastrephae (Muesebek, 1958), Doryctobracon areolatus (Szépligeti, 1911), D. fluminensis (Costa Lima, 1938), Opius bellus Gahan, 1930 and Utetes anastrephae (Viereck, 1913); Figitidae - Aganaspis nordlanderi Wharton, 1998, Lopheucoila anastrephae (Rhower, 1919), Odontosema anastrephae (Borgmeier, 1935) and Trybliographa infuscata Gallardo, Díaz & Uchôa-Fernandes, 2000 and, Pteromalidae - Spalangia gemina Boucek, 1963 and S. endius Walker, 1839. In all cases only one parasitoid emerged per puparium. D. areolatus was the most abundant and frequent parasitoid of fruit fly species, as was L. anastrephae in Neosilba spp. larvae. This is the first record of A. nordlanderi in the midwestern Brazilian region

Species Diversity of Frugivorous Flies (Diptera: Tephritoidea) from Hosts in the Cerrado of the State of Mato Grosso do Sul, Brazil / Diversidade de Espécies de Moscas Frugívoras (Diptera: Tephritoidea) em Hospedeiros do Cerrado do Estado de Mato Grosso do Sul

Neste trabalho foram amostradas 35 espécies de frutos do cerrado em sete municípios do estado de Mato Grosso do Sul (janeiro de 1993 a março de 1997) para avaliar a infestação por moscas frugívoras. Ocorreram espécies de seis gêneros de Tephritoidea - Anastrepha Schiner, Ceratitis MacLeay (Tephritidae); Dasiops Rondani, Lonchaea Fallén, Neosilba McAlpine (Lonchaeidae) e Notogramma Loew (Otitidae), em 29 espécies de frutos. As moscas-das-frutas (Tephritidae) colonizaram 19 hospedeiros e foram representadas por 11 espécies: Anastrepha fraterculus (Wied.), A. grandis (Macquart), A. montei Lima, A. obliqua (Macquart), A. pickeli Lima, A. sororcula Zucchi, A. striata Schiner, A. turpiniae Stone, A. zenildae Zucchi, Anastrepha sp. n. e Ceratitis capitata (Wied.). De Lonchaeidae foram obtidos: Dasiops inedulis Steyskal, Dasiops spp., Lonchaea spp., Neosilba zadolicha McAlpine e Neosilba spp. As espécies de Neosilba foram as mais abundantes moscas frugívoras, ocorrendo em 22 hospedeiros. Notogramma foi o único gênero de Otitidae obtido. É discutida a associação entre moscas frugívoras e frutos hospedeiros.

Thirty-five fruit species were sampled in seven municipalities located in the cerrado of the state of Mato Grosso do Sul (January 1993 to March 1997) in a study to evaluate the infestation by frugivorous flies. Species of six genera of Tephritoidea were reared from 29 host fruits: Anastrepha Schiner, Ceratitis MacLeay (Tephritidae); Dasiops Rondani, Lonchaea Fallén, Neosilba McAlpine, (Lonchaeidae) and Notogramma Loew (Otitidae). Fruit flies (Tephritidae) were found in 19 host fruits and were represented by 11 species: Anastrepha fraterculus (Wied.), A. grandis (Macquart), A. montei Lima, A. obliqua (Macquart), A. pickeli Lima, A. sororcula Zucchi, A. striata Schiner, A. turpiniae Stone, A. zenildae Zucchi, Anastrepha n. sp. and Ceratitis capitata (Wied.). From Lonchaeidae were reared: Dasiops inedulis Steyskal, Dasiops spp., Lonchaea spp., Neosilba zadolicha McAlpine and Neosilba spp. The species of Neosilba were the most abundant, occourring in 22 host fruits. Notogramma was the only genus of Otitidae obtained. The association between frugivorous flies and the fruit species is discussed.