Abstract:Objetivou-se com este trabalho conhecer as espécies de parasitóides associados às pupas de Anastrepha sp., em cultivos de goiabeira Psidium guajava L. no município de Lavras - MG. Frutos atacados foram depositados em recipientes plásticos, sobre uma camada de areia fina com 5 cm de espessura, a qual serviu como substrato para a fase de pupa. As pupas foram separadas do substrato pelo método de flutuação, sendo quantificadas e individualizadas em frascos de vidro contendo areia, onde permaneceram até a emergênc… Show more
“…The lack of significant response by unexperienced D. longicaudata to these fruit odours may be due to its generalist search behaviour, attaching larvae of several species of Anastrepha , Bactrocera and Ceratitis in different hosts (Leyva et al ., 1991; Alvarenga et al ., 2005; Ovruski et al ., 2007). On the contrary, A. pelleranoi is mainly referred to as a parasitoid of Anastrepha species larvae (Guimarães et al ., 1999; Sivinski et al ., 2000; Costa et al ., 2007). In addition, it is often found in Myrtaceae, parasitizing tephritid larvae, suggesting, unlike D. longicaudata , a more direct association between A. pelleranoi and this plant family (Garcia and Corseuil, 2004).…”
Section: Discussionmentioning
confidence: 99%
“…The way females deal with the chemical complexity of the environment depends on their life history, and a higher degree of parasitoid specialization may influence the search for the host (Wäschke et al ., 2013). A. pelleranoi probably associates larvae of A. fraterculus with fruits of Myrtaceae, such as guava (Costa et al ., 2007). This may have influenced the choice of host; thus, a change in behaviour of parasitoids will require the development of more generations of larvae that feed on other fruits.…”
Section: Discussionmentioning
confidence: 99%
“…This family includes species such as Doryctobracon areolatus (Szépligeti), Diachasmimorpha longicaudata (Ashmead) and Fopius arisanus (Sonan). Several species of Figitidae are also reported as parasitoids of Tephritidae larvae, being natural controllers of these pests (Costa et al ., 2007), such as Dicerataspis flavipes (Kieffer), Aganaspis nordlanderi Wharton and Aganaspis pelleranoi (Brèthes) (Guimarães et al ., 1999).…”
Anastrepha fraterculus (Diptera: Tephritidae) is a major barrier to fruit production and exportation. In Brazil, the native parasitoid Aganaspis pelleranoi (Hymenoptera: Figitidae) and the exotic parasitoid Diachasmimorpha longicaudata (Hymenoptera, Braconidae) stand out as biological control agents. Knowledge of the factors that affect interactions among parasitoids, A. fraterculus, and host fruits may enhance the use of these agents in biological control programmes. This study evaluated the chemotaxis and parasitism of A. pelleranoi and D. longicaudata females reared on A. fraterculus larvae and kept on an artificial diet, red guava (Psidium guajava) or apple (Malus domestica). Females of both parasitoid species that emerged from larvae raised on artificial diet, guava or apple, were tested to Y olfactometer choice tests. In the parasitism tests, both parasitoid species were made to choose between A. fraterculus larvae brushed with water, apple pulp or guava pulp. D. longicaudata females from artificial diet (control) did not distinguish between fruit odours; however, females of D. longicaudata from larvae kept in apple or guava directed to the odours of their original fruit. The greatest parasitism for D. longicaudata occurred in the units that contained the pulp in which the larvae grew. A. pelleranoi from artificial diet preferred guava odours, including the females kept in apple. Similar results were observed in the parasitism bioassays. Our results found that A. fraterculus larval feeding influenced search behaviour and parasitism of D. longicaudata, whereas A. pelleranoi rearing experience did not affect its host choices.
“…The lack of significant response by unexperienced D. longicaudata to these fruit odours may be due to its generalist search behaviour, attaching larvae of several species of Anastrepha , Bactrocera and Ceratitis in different hosts (Leyva et al ., 1991; Alvarenga et al ., 2005; Ovruski et al ., 2007). On the contrary, A. pelleranoi is mainly referred to as a parasitoid of Anastrepha species larvae (Guimarães et al ., 1999; Sivinski et al ., 2000; Costa et al ., 2007). In addition, it is often found in Myrtaceae, parasitizing tephritid larvae, suggesting, unlike D. longicaudata , a more direct association between A. pelleranoi and this plant family (Garcia and Corseuil, 2004).…”
Section: Discussionmentioning
confidence: 99%
“…The way females deal with the chemical complexity of the environment depends on their life history, and a higher degree of parasitoid specialization may influence the search for the host (Wäschke et al ., 2013). A. pelleranoi probably associates larvae of A. fraterculus with fruits of Myrtaceae, such as guava (Costa et al ., 2007). This may have influenced the choice of host; thus, a change in behaviour of parasitoids will require the development of more generations of larvae that feed on other fruits.…”
Section: Discussionmentioning
confidence: 99%
“…This family includes species such as Doryctobracon areolatus (Szépligeti), Diachasmimorpha longicaudata (Ashmead) and Fopius arisanus (Sonan). Several species of Figitidae are also reported as parasitoids of Tephritidae larvae, being natural controllers of these pests (Costa et al ., 2007), such as Dicerataspis flavipes (Kieffer), Aganaspis nordlanderi Wharton and Aganaspis pelleranoi (Brèthes) (Guimarães et al ., 1999).…”
Anastrepha fraterculus (Diptera: Tephritidae) is a major barrier to fruit production and exportation. In Brazil, the native parasitoid Aganaspis pelleranoi (Hymenoptera: Figitidae) and the exotic parasitoid Diachasmimorpha longicaudata (Hymenoptera, Braconidae) stand out as biological control agents. Knowledge of the factors that affect interactions among parasitoids, A. fraterculus, and host fruits may enhance the use of these agents in biological control programmes. This study evaluated the chemotaxis and parasitism of A. pelleranoi and D. longicaudata females reared on A. fraterculus larvae and kept on an artificial diet, red guava (Psidium guajava) or apple (Malus domestica). Females of both parasitoid species that emerged from larvae raised on artificial diet, guava or apple, were tested to Y olfactometer choice tests. In the parasitism tests, both parasitoid species were made to choose between A. fraterculus larvae brushed with water, apple pulp or guava pulp. D. longicaudata females from artificial diet (control) did not distinguish between fruit odours; however, females of D. longicaudata from larvae kept in apple or guava directed to the odours of their original fruit. The greatest parasitism for D. longicaudata occurred in the units that contained the pulp in which the larvae grew. A. pelleranoi from artificial diet preferred guava odours, including the females kept in apple. Similar results were observed in the parasitism bioassays. Our results found that A. fraterculus larval feeding influenced search behaviour and parasitism of D. longicaudata, whereas A. pelleranoi rearing experience did not affect its host choices.
“…Apesar de sua relevância econômica no cenário mundial, a exportação da goiaba brasileira in natura ainda é inexpressiva, tornando sua comercialização dependente quase que exclusivamente do mercado interno (Costa et al, 2007). Uma das principais causas que justificam essa condição diz respeito à presença de pragas nas áreas cultivadas, notadamente de pragas quarentenárias, dentre elas as moscas-das-frutas (Diptera: Tephritidae), consideradas importantes pragas da fruticultura mundial, causando perdas significativas à produção e limitando o livre trânsito de frutas devido às restrições impostas por parte dos países importadores (Malavasi, 2000).…”
RESUMO Objetivou-se com o presente trabalho conhecer os himenópteros parasitoides associados às moscas-das-frutas (Diptera: Tephritidae) de ocorrência em pomar urbano de goiabeira (Psidium guajava L.) (Myrtaceae), em Fortaleza, Ceará, bem como determinar a flutuação populacional desses organismos nesse ecossistema. Realizaram-se coletas de frutos maduros em plantas de goiabeira e frutos recém-caídos, no período de novembro de 1999 a outubro de 2000. Os parasitoides obtidos pertencem às famílias Braconidae, Chalcididae, Figitidae (Eucoilinae), Diapriidae (Diapriinae) e Eulophidae, sendo que os da família Figitidae são os mais comuns. As maiores incidências desses organismos ocorreram nos meses de janeiro e março de 2000.
“…In Brazil, the main practices adopted by fruit growers to supress fruit flies populations include the use of toxic baits and spraying with insecticides (BORGES et al, 2015). However, due to pressure from importing countries demanding an absence of pests and chemical residues, thus limiting the exportation of fresh fruit (PARANHOS et al, 2007), along with the increased environmental awareness of Brazilian consumers and producers, the management of this insect pest has been improved (COSTA et al, 2007). As such, other control strategies have been adopted, including the use of biological control through native hymenopteran parasitoids, which have shown promising results in controlling various agricultural pests around the world (PARANHOS et al, 2007).…”
Section: Parasitodes Associados à Anastrepha Fraterculusmentioning
With the objective of studying the entomofauna of microhymenoptera parasitoids associated with A. fraterculus, we collected fruits from native fruit trees in Caçador, State of Santa Catarina, Brazil. We evaluated fruit from Eugenia involucrata, E. uniflora, Campomanesia xanthocarpa, Psidium cattleyanum (red and yellow), and Rubus sp. For each fruit tree species, we collected 40 fruits from five plants, for a total of 200 fruits per species. The fruits were maintained in plastic boxes containing sterilized sand to obtain puparia, which subsequently, were maintained in cages until the emergence of flies and/or parasitoids. In the fruits collected, we encountered puparia of A. fraterculus, from which emerged Aganaspis nordlanderi, A. pelleranoi (Figitidae: Eucoilinae), Doryctobracon brasiliensis and D. areolatus (Braconidae: Opiinae). This is the first record of the species A. nordlanderi in the State of Santa Catarina. This study also represents the first record of A. fraterculus as host of A. nordlanderi.
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