Parasitismo em Anastrepha sp. (Diptera: Tephritidae) por Aganaspis pelleranoi (Brèthes, 1924) e Dicerataspis sp. (Hymenoptera: Figitidae: Eucoilinae)

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 emergência das moscas adultas ou de seus parasitóides. Foram coletados 190 pupários de Anastrepha sp., dos quais emergiram 38 parasitóides (Hymenoptera: Figitidae), sendo 20 Aganaspis pelleranoi (Brèthes, 1924) e 18 Dicerataspis sp., correspondendo a um parasitismo natural de 20%.

CanAnastrepha fraterculuslarval feeding influence chemotaxis and parasitism ofDiachasmimorpha longicaudataandAganaspis pelleranoi?

“…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).…”

“…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.…”

“…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).…”

Levantamento E Flutuação Populacional De Parasitoides De Moscasdas-Frutas (Diptera: Tephritidae) De Ocorrência Em Goiabeira (Psidium Guajava L.) Em Fortaleza, Ceará

“…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).…”

Parasitoides associated with Anastrepha fraterculus (Diptera: Tephritidae) in native fruits:first record of Aganaspis nordlanderi (Hymenoptera: Figitidae) in the state of Santa Catarina

“…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).…”